SD05C through SD24C. Single Line TVS Diode for ESD Protection in Portable Electronics PRELIMINARY Features. PROTECTION PRODUCTS Description

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1 Descrition The SDxxC TS diodes are designed to relace multilayer varistors (MLs) in ortable alications such as cell hones, notebook comuters, and DA s. They offer suerior electrical characteristics such as lower claming voltage and no device degradation when comared to MLs. The SDxxC series TS diodes are designed to rotect sensitive semiconductor comonents from damage or uset due to electrostatic discharge (ESD) and other voltage induced transient events. The SDxxC is in a SOD-323 ackage and will rotect one bidirectional line. They are available with working voltages of 5-24 volts. These devices will fit on the same C ad area as an 0805 ML device. They give the designer the flexibility to rotect one line in alications where arrays are not ractical. Additionally, it may be srinkled around the board in alications where board sace is at a remium. They may may be used to meet the ESD immunity requirements of IEC , Level 4 (±15k air, ±8k contact discharge). SD05C through SD24C Single Line TS Diode for ESD rotection in ortable Electronics RELIMINARY Features 3 Watts eak ulse ower (t = 8/20µs) Transient rotection for data lines to IEC (ESD) ±15k (air), ±8k (contact) IEC (EFT) 40A (5/ns) IEC (Lightning) 24A (8/20µs) Small ackage for use in ortable electronics Suitable relacement for ML s in ESD rotection alications rotects one I/O or ower line Low claming voltage Working voltages: 5, 12, 15, 24 Low leakage current Solid-state silicon avalanche technology Mechanical Characteristics EIAJ SOD-323 ackage Molding comound flammability rating: UL 94-0 Marking : Marking code ackaging : Tae and Reel er EIA 481 Alications Cell hone Handsets and Accessories Microrocessor based equiment ersonal Digital Assistants (DA s) Notebooks, Desktos, and Servers ortable Instrumentation agers eriherals Schematic & IN Configuration 1 2 SOD-323 (To iew) Revision 07/06/04 1

2 Absolute Rating Rating alue eak ulse ower (t = 8/20µs) k 3 Watts ESD oltage (HM Waveform er IEC ) ESD k Lead Soldering Temerature T L 260 ( sec. ) C Oerating Temerature T J -55 to +125 C Storage Temerature T STG 55 to +1 - C Electrical Characteristics SD05C TS arameter Tyical Stand-Off oltage RWM 5 reakdown oltage 6 R RWM = 5, T=25 C µ A Claming oltage C 9. 8 Claming oltage C = 24A, t eak ulse Current t 24 A I Caacitance R = 0, f = 1MHz 200 F SD12C TS arameter Tyical Stand-Off oltage WM R 2 1 reakdown oltage R RWM = 12, T=25 C 1 µ A Claming oltage C 19 Claming oltage C = 15A, t 24 eak ulse Current t 15 A I Caacitance R = 0, f = 1MHz 0 F 2004 Semtech Cor. 2

3 Electrical Characteristics (Continued) RELIMINARY SD15C TS arameter Tyical Stand-Off oltage WM R 5 1 reakdown oltage R RWM = 15, T=25 C 1 µ A Claming oltage C 24 Claming oltage C = 12A, t 29 eak ulse Current I t 12 A Caacitance R = 0, f = 1MHz 75 F SD24C TS arameter Tyical Stand-Off oltage WM R 4 2 reakdown oltage R RWM = 24, T=25 C 1 µ A Claming oltage C 40 Claming oltage C = 8A, t 44 eak ulse Current t 8 A I Caacitance R = 0, f = 1MHz F 2004 Semtech Cor. 3

4 Tyical Characteristics Non-Reetitive eak ulse ower vs. ulse Time ower Derating Curve eak ulse ower - k (kw) ulse Duration - t (µs) % of Rated ower or I Ambient Temerature - T A ( o C) ulse Waveform Claming oltage vs. eak ulse Current ercent of I e -t td = I/2 Waveform arameters: tr = 8µs td = 20µs Claming oltage - C () Waveform arameters: tr = 8µs td = 20µs SD12C SD05C Time (µs) eak ulse Current - (A) 2004 Semtech Cor. 4

5 Alications Information Device Connection Otions The SDxxC TS diodes are designed to rotect one data, I/O, or ower suly line. The device is designed to relace multi-layer varistors (MLs) in ortable alications. It is easily imlemented on existing 0805 ML ads and is only slightly larger than 0603 ML ads. The device is bidirectional and may be used on lines where the signal olarity is above and below ground. The device is symmetrical, so there is no cathode band. Circuit oard Layout Recommendations for Suression of ESD. Good circuit board layout is critical for the suression of fast rise-time transients such as ESD. The following guidelines are recommended (Refer to alication note SI99-01 for more detailed information): lace the TS near the inut terminals or connectors to restrict transient couling. Minimize the ath length between the TS and the rotected line. The ESD transient return ath to ground should be ket as short as ossible. lace a TS and decouling caacitor between ower and ground of comonents that may be vulnerable to electrostatic discharges to the ground lane. Minimize all conductive loos including ower and ground loos. Use multilayer boards when ossible. Minimize interconnecting line lengths Never run critical signals near board edges. Fill unused ortions of the C with ground lane. RELIMINARY Device Schematic and in Configuration Size Comarison to 0805 ML SOD ML Note: Nominal dimensions in inches Comonent lacement Comarison Matte Tin Lead Finish Matte tin has become the industry standard lead- relacement for Snb lead finishes. A matte tin finish is comosed of 0% tin solder with large grains. Since the solder volume on the leads is small comared to the solder aste volume that is laced on the land attern of the C, the reflow rofile will be determined by the requirements of the solder aste. Therefore, these devices are comatible with both lead- and Snb assembly techniques. In addition, unlike other lead- comositions, matte tin does not have any added alloys that can cause degradation of the solder joint ML on SOD-323 on Solder ad ML ad SOD-323 on Recommended (SOD-323) Solder ad 2004 Semtech Cor. 5

6 Outline Drawing - SOD-323 Land attern - SOD Semtech Cor. 6

7 Marking Codes RELIMINARY art Number SD05C SD12C SD15C SD24C Marking Code 5/ 6/ 7/ 8/ Ordering Information art Number Lead Finish Qty er Reel Reel Size SD05C.TC SD12C.TC SD15C.TC SD24C.TC SD05C.TCT SD12C.TCT SD15C.TCT SD24C.TCT Snb Snb Snb Snb b b b b Contact Information Semtech Cororation rotection roducts Division 200 Flynn Rd., Camarillo, CA 912 hone: (805) FAX (805) Semtech Cor. 7