USB 2.0 Specification Engineering Change Notice (ECN) #1: Mini-B connector Date: 10/20/2000

Transcription

1 US 2.0 Specification Engineering hange Notice (EN) #1: Mini- connector Date: 10/20/2000 Reason for EN: The US 2.0 specified device-side connector the connector is too large for use with a new generation of handheld and mobile devices, e.g., cell phones which would benefit from connectivity to the P. This EN incorporates a specification of a device-side mini connector (hereafter referred to as a mini- connector). The new connector only applies to upstream facing ports, i.e., connectors on devices. Summary of EN: The bulk of the EN specifies the mechanical requirements for the mini- plug, receptacle and cable assembly. It also identifies the usage scope of this connector. The last part of the EN describes the minimum test criteria and performance requirements for the new connector. enefits of EN: The EN enables standardization of miniature device-side US connectors and consequent economies of scales and lower cost for a new and growing class of devices which will benefit from connectivity to the P. The standardization also allows leveraging of the compliance test and certification model which is already in place for US connectors. ssessment of Impact on urrent Specification and urrent US Products: The connector specified in the EN will not have any impact on hardware or software of existing US products. The current US spec already allows for vendor-specific device side connectors such cable assemblies are called captive assemblies. ll that the EN does is to identify one such connector for use in devices which need the smaller size of connector. There is a potential for some end-user confusion because of two standard cable options; but this can be mitigated by appropriate end-user education. Structure of EN: The EN is in the form of a new hapter 6 with the mini- connector requirements inserted into the appropriate locations. This format enables specification of the new connector in context.

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3 hapter 6 Mechanical This chapter provides the mechanical and electrical specifications for the cables, connectors, and cable assemblies used to interconnect US devices. The specification includes the dimensions, materials, electrical, and reliability requirements. This chapter documents minimum requirements for the external US interconnect. Substitute material may be used as long as it meets these minimums. 6.1 rchitectural Overview The US physical topology consists of connecting the downstream hub port to the upstream port of another hub or to a device. The US can operate at three speeds. High-speed (480 Mb/s) and full-speed (12 Mb/s) require the use of a shielded cable with two power conductors and twisted pair signal conductors. Lowspeed (1.5 Mb/s) recommends, but does not require the use of a cable with twisted pair signal conductors. The connectors are designed to be hot plugged. The US Icon on the plugs provides tactile feedback making it easy to obtain proper orientation. 6.2 Keyed onnector Protocol To minimize end user termination problems, US uses a keyed connector protocol. The physical difference in the Series and (or mini- ) connectors insures proper end user connectivity. The connector is the principle means of connecting US devices directly to a host or to the downstream port of a hub. ll US devices must have the standard Series connector specified in this chapter. The (or mini- ) connector allows device vendors to provide a standard detachable cable. This facilitates end user cable replacement. Figure 6-1Figure 6-1 illustrates the keyed connector protocol. 85

4 Series "" onnectors Series "" plugs are always oriented upstream towards the Host System "" Plugs (From the US Device) Series "" onnectors Series "" plugs are always oriented downstream towards the US Device "" Plugs (From the Host System) "" Receptacles (Downstream Output from the US Host or Hub) "" Receptacles (Upstream Input to the US Device or Hub) Series "mini-" onnectors Series "mini-" plugs are always oriented downstream towards the US Device "mini-" Plugs (From the Host System) "mini-" Receptacles (Upstream Input to the US Device or Hub) Figure 6-1. Keyed onnector Protocol 86

5 The following list explains how the plugs and receptacles can be mated: Series receptacle mates with a Series plug. Electrically, Series receptacles function as outputs from host systems and/or hubs. Series plug mates with a Series receptacle. The Series plug always is oriented towards the host system. Series receptacle mates with a Series plug (male). Electrically, Series receptacles function as inputs to hubs or devices. Series plug mates with a Series receptacle. The Series plug is always oriented towards the US hub or device. Series mini- receptacle mates with a Series mini- plug (male). Electrically, Series mini- receptacles function as inputs to hubs or devices. Series mini- plug mates with a Series mini- receptacle. The Series mini- plug is always oriented towards the US hub or device. 6.3 able US cable consists of four conductors, two power conductors, and two signal conductors. High-/full-speed cable consists of a signaling twisted pair, VUS, GND, and an overall shield. High-/fullspeed cable must be marked to indicate suitability for US usage (see Section 6.6.2). High-/full-speed cable may be used with either low-speed, full-speed, or high-speed devices. When high-/full-speed cable is used with low-speed devices, the cable must meet all low-speed requirements. Low-speed recommends, but does not require the use of a cable with twisted signaling conductors. 6.4 able ssembly This specification describes three US cable assemblies: standard detachable cable, high-/full-speed captive cable, and low-speed captive cable. standard detachable cable is a high-/full-speed cable that is terminated on one end with a Series plug and terminated on the opposite end with a series (or mini- ) plug. high-/full-speed captive cable is terminated on one end with a Series plug and has a vendor-specific connect means (hardwired or custom detachable) on the opposite end for the high-/full-speed peripheral. The low-speed captive cable is terminated on one end with a Series plug and has a vendor-specific connect means (hardwired or custom detachable) on the opposite end for the low-speed peripheral. ny other cable assemblies are prohibited. The color used for the cable assembly is vendor specific; recommended colors are white, grey, or black Standard Detachable able ssemblies High-speed and full-speed devices can utilize the (or mini- ) connector. This allows the device to have a standard detachable US cable. This eliminates the need to build the device with a hardwired cable and minimizes end user problems if cable replacement is necessary. Devices utilizing the (or mini- ) connector must be designed to work with worst case maximum length detachable cable. Standard detachable cable assemblies may be used only on high-speed and full-speed devices. Using a high-/full-speed standard detachable cable on a low-speed device may exceed the maximum low-speed cable length. Figure 6-2Figure 6-2 and Figure 6-3 illustrates a standard detachable cable assembliesy. 87

6 H IMPORTNT NOTIE: ll standard detachable cable assemblies must be high-/full-speed. H G G Overmolded Series "" Plug (lways upstream towards the "host" system.) Overmolded Series "" Plug (lways downstream towards the US Device.) F F E Detail - (Series "" Plug) Detail - (Series "" Plug) Detail - (Typical US Shielded able) Polyvinyl hloride (PV) Jacket > 65% Tinned opper raided Shield luminum Metallized Polyester Inner Shield 28 WG ST Drain Wire E D D Red (VUS) lack (Ground) Green (D +) White (D -) Optional Molded Strain Relief ll dimensions are in millimeters (mm) unless otherwise noted. Dimensions are TYPIL and are for general reference purposes only. Series "" Plug to Series "" Plug US Standard Detachable able ssembly SIZE DTE DRWING NUMER REV 2/98 N/ SLE: N/ SHEET 1 of Figure US Standard Detachable able ssembly 88

7 Figure 6-3. US Standard Mini-connector Detachable able ssembly 89

8 Standard detachable cable assemblies must meet the following electrical requirements: The cable must be terminated on one end with an overmolded Series plug and the opposite end is terminated with an overmolded Series (or mini- ) plug. The cable must be rated for high-speed and full-speed. The cable impedance must match the impedance of the high-speed and full-speed drivers. The drivers are characterized to drive specific cable impedance. Refer to Section for details. The maximum allowable cable length is determined by signal pair attenuation and propagation delay. Refer to Sections and for details. Differences in propagation delay between the two signal conductors must be minimized. Refer to Section for details. The GND lead provides a common ground reference between the upstream and downstream ports. The maximum cable length is limited by the voltage drop across the GND lead. Refer to Section for details. The minimum acceptable wire gauge is calculated assuming the attached device is high power. The VUS lead provides power to the connected device. For standard detachable cables, the VUS requirement is the same as the GND lead High-/full-speed aptive able ssemblies ssemblies are considered captive if they are provided with a vendor-specific connect means (hardwired or custom detachable) to the peripheral. High-/full-speed hardwired cable assemblies may be used with either high-speed, full-speed, or low-speed devices. When using a high-/full-speed hardwired cable on a lowspeed device, the cable must meet all low-speed requirements. Figure 6-3 Figure 6-4 illustrates a high-/full-speed hardwired cable assembly. 90

9 H H G Overmolded Series "" Plug (lways upstream towards the "host" system.) G F Detail - (Series "" Plug) F ut End (lways downstream towards the US Device.) E 12.0 Detail - (Typical Terminations) E lunt ut Termination Prepared Termination D Optional Molded Strain Relief Polyvinyl hloride (PV) Jacket lunt ut Termination (Length Dimension Point) Polyvinyl hloride (PV) Jacket > 65% Tinned opper raided Metallized Shield Mylar Inner Shield 28 WG ST Drain Wire Red (VUS) lack (Ground) Green (D +) White (D -) User Specified Length Dimension Point D ll dimensions are in millimeters (mm) unless otherwise note. Dimensions are TYPIL and are for general reference purposes only. Series "" Plug to ut End US High-/full-speed Hardwired able ssembly SIZE DTE DRWING NUMER REV 2/98 N/ SLE: N/ SHEET 1 of Figure US High-/full-speed Hardwired able ssembly 91

10 High-/full-speed captive cable assemblies must meet the following electrical requirements: The cable must be terminated on one end with an overmolded Series plug and the opposite end is vendor specific. If the vendor specific interconnect is to be hot plugged, it must meet the same performance requirements as the US connector. The cable must be rated for high-speed and full-speed. The cable impedance must match the impedance of the high-speed and full-speed drivers. The drivers are characterized to drive specific cable impedance. Refer to Section for details. The maximum allowable cable length is determined by signal pair attenuation and propagation delay. Refer to Sections and for details. Differences in propagation delay between the two signal conductors must be minimized. Refer to Section for details. The GND lead provides a common reference between the upstream and downstream ports. The maximum cable length is determined by the voltage drop across the GND lead. Refer to Section for details. The minimum wire gauge is calculated using the worst case current consumption. The VUS lead provides power to the connected device. The minimum wire gauge is vendor specific Low-speed aptive able ssemblies ssemblies are considered captive if they are provided with a vendor-specific connect means (hardwired or custom detachable) to the peripheral. Low-speed cables may only be used on low-speed devices. Figure 6-4Figure 6-5 illustrates a low-speed hardwired cable assembly. 92

11 IMPORTNT NOTIE: For use in low-speed applications only. H H G G Overmolded Series "" Plug (lways upstream towards the "host" system.) F Detail - (Series "" Plug) F ut End (lways downstream towards the US Device.) E Detail - (Typical Terminations) E 12.0 lunt ut Termination Polyvinyl hloride (PV) Jacket Prepared Termination Polyvinyl hloride (PV) Jacket D 27.0 lunt ut Termination (Length Dimension Point) Red (VUS) lack (Ground) Green (D +) D White (D -) User Specified 9.0 Length Dimension Point Optional Molded Strain Relief ll dimensions are in millimeters (mm) unless otherwise noted. Dimensions are TYPIL and are for general reference purposes only. Series "" Plug to ut End US Low-speed Hardwired able ssembly SIZE DTE DRWING NUMER REV 2/98 N/ SLE: N/ SHEET 1 of Figure US Low-speed Hardwired able ssembly 93

12 Low-speed captive cable assemblies must meet the following electrical requirements: The cable must be terminated on one end with an overmolded Series plug and the opposite end is vendor specific. If the vendor specific interconnect is to be hot plugged, it must meet the same performance requirements as the US connector. Low-speed drivers are characterized for operation over a range of capacitive loads. This value includes all sources of capacitance on the D+ and D-lines, not just the cable. able selection must insure that total load capacitance falls between specified minimum and maximum values. If the desired implementation does not meet the minimum requirement, additional capacitance needs to be added to the device. Refer to Section for details. The maximum low-speed cable length is determined by the rise and fall times of low-speed signaling. This forces low-speed cable to be significantly shorter than high-/full-speed. Refer to Section for details. Differences in propagation delay between the two signal conductors must be minimized. Refer to Section for details. The GND lead provides a common reference between the upstream and downstream ports. The maximum cable length is determined by the voltage drop across the GND lead. Refer to Section for details. The minimum wire gauge is calculated using the worst case current consumption. The VUS lead provides power to the connected device. The minimum wire gauge is vendor specific Prohibited able ssemblies US is optimized for ease of use. The expectation is that if the device can be plugged in, it will work. y specification, the only conditions that prevent a US device from being successfully utilized are lack of power, lack of bandwidth, and excessive topology depth. These conditions are well understood by the system software. Prohibited cable assemblies may work in some situations, but they cannot be guaranteed to work in all instances. Extension cable assembly cable assembly that provides a Series plug with a series receptacle or a Series plug with a Series receptacle or a Series mini- plug with a Series mini- receptacle. This allows multiple cable segments to be connected together, possibly exceeding the maximum permissible cable length. able assembly that violates US topology rules cable assembly with both ends terminated in either Series plugs or Series (or mini- ) receptacles. This allows two downstream ports to be directly connected. Note: This prohibition does not prevent using a US device to provide a bridge between two US buses. Standard detachable cables for low-speed devices Low-speed devices are prohibited from using standard detachable cables. standard detachable cable assembly must be high-/full-speed. Since a standard detachable cable assembly is high-/fullspeed rated, using a long high-/full-speed cable exceeds the capacitive load of low-speed. 94

13 6.5 onnector Mechanical onfiguration and Material Requirements The US Icon is used to identify US plugs and the receptacles. Figure 6-5Figure 6-6 illustrates the US Icon. ll dimensions are ± 5% Dia:1.67 L Dia:1.33 L 0.33 L L 1.50 L Dia:L Dia:L 0.33 L L 1.50 L Dia:L Dia:L L 0.5 L L L 1.67 L Dia:1.33 L 0.33 L L 2.33 L 3.75 L 5.00 L 5.17 L 6.25 L 8.00 L US Icon Location Figure 6-5Figure 6-6. US Icon The US Icon is embossed, in a recessed area, on the topside of the US plug. This provides easy user recognition and facilitates alignment during the mating process. The US Icon and Manufacturer s logo should not project beyond the overmold surface. The US Icon is required, while the Manufacturer s logo is recommended, for both Series and (or mini- ) plug assemblies. The US Icon is also located adjacent to each receptacle. Receptacles should be oriented to allow the Icon on the plug to be visible during the mating process. Figure 6-6Figure 6-7 and Figure 6-8 illustrates the typical plug orientations. 95

14 Optional Top "Locator Detail" Top View Engraved US Icon Overmolding 0.6mm (0.024") Max US Icon Engraving Recess Section - (Plug ross-section) Locator Height pproximately 0.6mm (0.024") Manufacturer s Engraved Logo Locator Width pproximately 0.5mm (0.020") 0.6mm (0.024") Max Manufacturer s Logo Engraving Recess Optional Top "Locator Detail" Figure 6-6Figure 6-7. Typical US Plug Orientation 96

15 Figure 6-8. Typical US Mini- onnector Plug Orientation 97

16 6.5.2 US onnector Termination Data Table 6-1Table 6-1 provides the standardized contact terminating assignments by number and electrical value for Series and Series connectors. Table 6-1. US Series and Series onnector Termination ssignment ontact Number Signal Name Typical Wiring ssignment 1 VUS Red 2 D- White 3 D+ Green 4 GND lack Shell Shield Drain Wire Table 6-2 provides the standardized contact terminating assignments by number and electrical value for Series mini- connectors. Table 6-2. US Series mini- onnector Termination ssignment ontact Number Signal Name Typical Wiring ssignment 1 VUS Red 2 D- White 3 D+ Green 4 ID not connected 5 GND lack Shell Shield Drain Wire Series and Series (or Mini- ) Receptacles Electrical and mechanical interface configuration data for Series "" and Series "" receptacles are shown in Figure 6-7Figure 6-9 through Figure 6-12 and Figure 6-8. lso, refer to Figure 6-12Figure 6-17 through Figure 6-20, Figure 6-13, and Figure 6-14 at the end of this chapter for typical P receptacle layouts. 98

17 US Series "" Receptacle Interface H 8.88 ± ± 0.08 enter Line 0.50 ± ± ± ± 0.10 R 0.64 ± 0.13 (Typical) R 0.32 ± 0.13 (Typical) H G G 30 0 ± 2 0 (2) ± ± 0.13 F enter Line of ± 0.13 (8) F 4.13 REF 4.98 ± 0.25 Printed ircuit oard Receptacle ontact ontact Point 1.00 ± 0.05 (2) 3.50 ± 0.05 (2) enter Line 1.00 ± 0.05 (4) E ll dimensions are in millimeters (mm) unless otherwise noted. E D US Series "" Receptacle and Plug Mating Features D Fully Mated Series "" Receptacle and Plug 30 0 ± 2 0 (2) 0.50 ± 0.10 (2) Overmold oot 8.0 MX Receptacle Flange MIN Interface and Mating Drawing 1 llow a minimum spacing of 2.67mm between the face of the receptacle and the plug overmold boot. Series "" Receptacle SIZE DTE DRWING NUMER REV 2/98 N/ SLE: N/ SHEET 1 of Figure 6-7Figure 6-9. US Series "" Receptacle Interface and Mating Drawing 99

18 US Series "" Receptacle Interface H Receptacle ontact (2) (2) H G (4) G enter Line (4) F R 0.38 (6) ontact Point 3.67 enter Line (4) (4) F enter Line Receptacle Housing E enter Line (2) ll dimensions are in millimeters (mm) unless otherwise noted. E (2) D Receptacle Shell D US Series "" Receptacle and Plug Mating Features Overmold oot Overmold oot 10.5 MX 11.5 MX MIN Receptacle Shell Fully Mated Plug and Receptacle llow a minimum spacing of 2.67mm between the face of the receptacle and the plug overmold boot. 1 Interface and Mating Drawing US Series "" Receptacle SIZE DTE DRWING NUMER REV 2/98 N/ SLE: N/ SHEET 1 of Figure 6-8Figure US Series "" Receptacle Interface and Mating Drawing 100

19 Figure US Series Mini- Receptacle Interface and Mating Drawing 101

20 Figure US Series Mini- Receptacle Interface Drawing (Detail) 102

21 Receptacle Injection Molded Thermoplastic Insulator Material Minimum UL 94-V0 rated, thirty percent (30%) glass-filled polybutylene terephthalate (PT) or polyethylene terephthalate (PET) or better. Typical olors: lack, gray, and natural. The mini- receptacle insulator must be black in color. Flammability haracteristics: UL 94-V0 rated. Flame Retardant Package must meet or exceed the requirements for UL, S, VDE, etc. Oxygen Index (LOI): Greater than 21%. STM D Receptacle Shell Materials Series and Series Substrate Material: mm phosphor bronze, nickel silver, or other copper based high strength materials. Plating: 1. Underplate: Optional. Minimum 1.00 micrometers (40 microinches) nickel. In addition, manufacturer may use a copper underplate beneath the nickel. 2. Outside: Minimum 2.5 micrometers (100 microinches) bright tin or bright tin-lead Series mini- Substrate Material: 0.3 mm minimum phosphor bronze, nickel silver, or other suitable material. The plating information below describes an example of acceptable "mini-" receptacle plating. Plating: 1. Underplate: Optional. Minimum 1.00 micrometers (40 microinches) nickel. In addition, manufacturer may use a copper underplate beneath the nickel. 2. Outside: Minimum 2.5 micrometers (100 microinches) bright tin or bright tin-lead Receptacle ontact Materials Series and Series Substrate Material: mm minimum half-hard phosphor bronze or other high strength copper based material. Plating: ontacts are to be selectively plated.. Option I 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.05 micrometers (2 microinches) gold over a minimum of 0.70 micrometers (28 microinches) palladium. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate.. Option II 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 103

22 2. Mating rea: Minimum 0.05 micrometers (2 microinches) gold over a minimum of 0.75 micrometers (30 microinches) palladium-nickel. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate.. Option III 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.75 micrometers (30 microinches) gold. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate Series mini- Substrate Material: 0.2 mm minimum half-hard phosphor bronze or other high strength suitable material. Plating: ontacts are to be selectively plated. The following underplate, mating area, and solder tails options below describe examples of acceptable "mini-" receptacle contact plating. D. Option I 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.05 micrometers (2 microinches) gold over a minimum of 0.70 micrometers (28 microinches) palladium. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate. E. Option II 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.05 micrometers (2 microinches) gold over a minimum of 0.75 micrometers (30 microinches) palladium-nickel. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate. F. Option III 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.75 micrometers (30 microinches) gold. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate Series and Series (or Mini- ) Plugs Electrical and mechanical interface configuration data for Series "" and Series (or mini- ) "" plugs are shown in Figure 6-9Figure 6-13 through Figure 6-15 and Figure

23 ± 0.10 R Typical MIN H 8.0 MX ± 0.03 Typical 0.15 ± 0.10 Typical 30 0 ± 2 0 Typical H 4.50 ± ± G 8.0 MX 16.0 MX 1.95 ± ± 0.13 Plug ontact UL 94-V0 Plug Housing MIN G F 4.0 MX enter Line 5.16 ± ± 0.05 (4) 2.00 ± 0.13 (4) F E Section - enter Line 2.50 ± 0.05 (2) 2.00 ± 0.05 (2) Overmold oot E 2.50 ± 0.13 (4) Overmold oot D 4.2 MIN GOLD PLTE RE 8.65 ± ± ± Overall connector and cable assembly length is measured from Datum of the Series "" Plug to Datum of the Series "" Plug or to the blunt end termination. ll dimensions are in millimeters (mm) unless otherwise noted. D 1.0 ± 0.05 (2) 3.5 ± 0.05 (2) 9.70 ± 0.13 Section - Interface Drawing 0.16 ± ± 0.13 US Series "" Plug SIZE DTE DRWING NUMER REV 2/98 N/ SLE: N/ SHEET 1 of Figure 6-9Figure US Series "" Plug Interface Drawing 105

24 H 8.00 ± ± 0.10 H 0.38 MX 10.5 MX 1.46 ± ± 2 0 Typical G F E D 45 0 ± (2) enter Line of ± 0.13 (2) 4.20 MIN Gold Plate rea 1.16 MX 1.25 ± 0.10 (4) enter Line Section - enter Line Section ± ± ± ± ± ± 0.05 enter Line 8.65 ± ± 2 0 (2) 0.25 ± MIN 3.70 ± 0.13 Overall connector and cable assembly length is measured from Datum '' of the Series "" Plug to Datum '' of the Series "" Plug or the blunt end termination. Overmold oot Overmold oot ll dimensions are in millimeters (mm) unless otherwise noted MX G F E D 0.16 ± 0.15 Typical 0.13 ± 0.13 Typical Interface Drawing US Series "" Plug SIZE DTE DRWING NUMER REV 2/98 N/ SLE: N/ SHEET 1 of Figure 6-10Figure US Series Plug Interface Drawing 106

25 Figure US Series Mini- Plug Interface Drawing 107

26 Plug Injection Molded Thermoplastic Insulator Material Minimum UL 94-V0 rated, thirty percent (30%) glass-filled polybutylene terephthalate (PT) or polyethylene terephthalate (PET) or better. Typical olors: lack, gray, and natural. The mini- plug insulator must be black in color. Flammability haracteristics: UL 94-V0 rated. Flame Retardant Package must meet or exceed the requirements for UL, S, and VDE. Oxygen Index (LOI): 21%. STM D Plug Shell Materials Series and Series Substrate Material: mm phosphor bronze, nickel silver, or other suitable material. Plating:. Underplate: Optional. Minimum 1.00 micrometers (40 microinches) nickel. In addition, manufacturer may use a copper underplate beneath the nickel.. Outside: Minimum 2.5 micrometers (100 microinches) bright tin or bright tin-lead Series mini- Substrate Material: 0.2 mm minimum phosphor bronze, nickel silver, or other suitable material. The information below describes an example of acceptable "mini-" plug plating. Plating: 1. Underplate: Optional. Minimum 1.00 micrometers (40 microinches) nickel. In addition, manufacturer may use a copper underplate beneath the nickel. 2. Outside: Minimum 2.5 micrometers (100 microinches) bright tin or bright tin-lead Plug (Male) ontact Materials Series and Series Substrate Material: mm half-hard phosphor bronze. Plating: ontacts are to be selectively plated.. Option I 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.05 micrometers (2 microinches) gold over a minimum of 0.70 micrometers (28 microinches) palladium. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate.. Option II 108

27 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.05 micrometers (2 microinches) gold over a minimum of 0.75 micrometers (30 microinches) palladium-nickel. 3. Wire rimp/solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate.. Option III 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.75 micrometers (30 microinches) gold. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate Series mini- Substrate Material: 0.2 mm minimum half-hard phosphor bronze or other suitable material. Plating: ontacts are to be selectively plated. The underplate, mating area, and solder tails options below describe examples of acceptable "mini-" plug contact plating. D. Option I 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.05 micrometers (2 microinches) gold over a minimum of 0.70 micrometers (28 microinches) palladium. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate. E. Option II 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.05 micrometers (2 microinches) gold over a minimum of 0.75 micrometers (30 microinches) palladium-nickel. 3. Wire rimp/solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate. F. Option III 1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. opper over base material is optional. 2. Mating rea: Minimum 0.75 micrometers (30 microinches) gold. 3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the underplate. 109