Chip Resistors CR, LCR and ULCR Features Flat Chip Resistors for surface mount applications LCR and ULCR for current sensing applications L Dimensions C C C C w T 15 21 2 63 85 126 121 21 2512* L (Length) Inches.16 ±.8 (.4 ±.2).24 ±.2 (.6 ±.5). ±.2 (1. ±.5).63 ±.4 (1.6 ±.1).79 ±.6 (2. ±.15).126 ±.6 (3.2 ±.15).126 ±.6 (3.2 ±.15).197 ±.6 (5. ±.15).248 ±.6 (6.3 ±.15) W (Width) Inches.8 ±.8 (.2 ±.2).12 ±.1 (.3 ±.2).2 ±.1 (.5 ±.2).31 ±.4 (.8 ±.1).5 ±.6 (1.25 ±.15).63 ±.6 (1.6 ±.15).98 ±.6 (2.5 ±.15).98 ±.6 (2.5 ±.15).126 ±.6 (3.2 ±.15) T (Thickness) Inches.5 ±.8 (.13 ±.2).1 ±.2 (.25 ±.5).14 ±.2 (.35 ±.5).18 ±.4 (.45 ±.1).18 ±.6 (.45 ±.15) C (End Band) Inches.3 ±.1 (.8 ±.3).6 ±.2 (.15 ±.5).8 ±.4 (.2 ±.1).12 ±.6 (.3 ±.15).14 ±.6 (.35 ±.15).2 ±.8 (.5 ±.2).2 ±.8 (.5 ±.2).24 ±.8 (.6 ±.2).24 ±.8 (.6 ±.2) CR Series 3 2 Structure LCR Series 3 2 * ULCR. See page 43 4 5 4 5 6 1 6 7 1 Description 1 Substrate Alumina 2 Resistive element Ruthenium Oxide (RuO 2 ) 3 Protective coating Boro-Silicate Glass 4 Inner termination Silver Palladium (Ag-Pd) 5 Inner Plating Nickel (Ni) Description 1 Substrate Alumina 2 Resistive element Silver Palladium (Ag-Pd) 3 Protective coating Boro-Silicate Glass 4 Inner termination Silver Palladium (Ag-Pd) 5 1st Plating Copper (Cu) 6 Outer Plating Solder Plating, 1% matte Tin (Sn) 6 2nd Plating Nickel (Ni) 7 3rd Plating Solder Plating, 1% matte Tin (Sn) For standard resistance values, please see EIA Standard Values on page 59.
CR Standard Chip Resistors Specifications Series Power Rating at 7 C Max. Working Voltage Zero (ohm) Current Rating Range CR15-3W.3W PR or 15V whichever is less.5a CR21-2W.5W PR or 25V whichever is less.5a Zero, 1Ω - 1Meg Ω Only available in 5% tolerance Zero, 1Ω - 1Meg Ω E-12 (1.2Meg Ω - 1Meg Ω) CR2-16W.63W PR or 5V whichever is less 1A Zero, 1Ω - 1MegΩ CR63-16W.63W PR or 5V whichever is less 1A Zero, 1Ω - 22Meg Ω CR63-1W.1W PR or 5V whichever is less 1A Zero, 1Ω - 22Meg Ω CR85-1W.1W PR or 15V whichever is less 2A Zero, 1Ω - 22Meg Ω CR85-8W.125W PR or 15V whichever is less 2A Zero, 1Ω - 22Meg Ω CR126-8W.125W PR or 2V whichever is less 2A Zero, 1Ω - 22Meg Ω CR126-4W.25W PR or 2V whichever is less 2A Zero, 1Ω - 22Meg Ω CR121-4W.25W PR or 2V whichever is less 4A Zero, 1Ω - 1Meg Ω CR121-2W.5W PR or 2V whichever is less 4A Zero, 1Ω - 1Meg Ω CR21-2W.5W PR or 2V whichever is less 5A Zero, 1Ω - 1Meg Ω CR21-1W 1.W PR or 2V whichever is less 5A Zero, 1Ω - 1Meg Ω CR2512-1W 1.W PR or 2V whichever is less 5A Zero, 1Ω - 1Meg Ω CR2512-2W 2.W PR or 2V whichever is less 5A Zero, 1Ω - 1Meg Ω Operating Temp. Range is -55 C to +155 C DC Value of zero ohm is 5m ohms max. 41
Chip Resistors LCR Low Value Chip Resistors Specifications Series Power Rating At 7 C (W) Rated Current Range (A) Range (mω) LCR2.125.37 1.58 5 976 LCR63.125.36 2.5 2 976 LCR85.25.5 3.53 2 976 LCR126.5.71 7.7 1 976 LCR121.66.85 3.63 5 9 LCR21.75.87 8.66 1 976 LCR2512 2. 1.1 1. 1 976 Specific Range (SRR) (mω) 5 1 Tolerance Available Temperature Coefficient of (PPM) (1-6 / C) ±3 12 5 ±2 2 5 51 1 ±3 12 5 ±2 2 5 51 1 ±3 12 5 ±2 1 2 21 5 ±3 51 5 ±2 5 47 ±2 5 9 ±1 1 2 21 5 ±3 51 5 ±2 1 2 21 5 ±3 51 5 ±2 Note: Other nominal resistance values may also be available, please contact VENKEL LTD. for further information. Standard resistance values and corresponding codes: Dielectric Withstanding Voltage (DWV) (V) Operating Temperature Range ( C) 1 55 ~ +125 1 55 ~ +125 1m ohm R1 27m ohm R27 5m ohm R5 8m ohm R8 16m ohm R16 33m ohm R33 6m ohm R6 12m ohm R12 3m ohm R3 56m ohm R56 9m ohm R9 18m ohm R18 36m ohm R36 65m ohm R65 15m ohm R15 33m ohm R33 6m ohm R6 1m ohm R1 2m ohm R2 m ohm R 68m ohm R68 18m ohm R18 35m ohm R35 65m ohm R65 11m ohm R11 22m ohm R22 43m ohm R43 7m ohm R7 2m ohm R2 m ohm R 68m ohm R68 12m ohm R12 25m ohm R25 47m ohm R47 75m ohm R75 22m ohm R22 43m ohm R43 7m ohm R7 13m ohm R13 27m ohm R27 5m ohm R5 8m ohm R8 25m ohm R25 47m ohm R47 75m ohm R75 15m ohm R15 3m ohm R3 56m ohm R56 9m ohm R9 Marking for LCR: The resistance code shall be marked on the resistor as follows (this code is the same for 1% and 5% tolerances): 2 size: no markings 63 size: 3-digit markings using R and 2 digits. When R can not be used then 3 digits and underlined. (see below) 85 2512 size: 4-digit markings using R and 3 digits. Rxxx. R1 = 1m ohm, R12 = 12m ohm. Examples of 3-digit markings: R1 = 1m ohm 22 = 22m ohm 68 = 68m ohm R8 = 8m ohm R1 = 1m ohm 42
ULCR Ultra Low Value Chip Resistors Dimensions C Specifications Size (mω) T Power Rating At 7 C (W) L Tolerance Available w Temperature Coefficient of (PPM) (1-6 / C) Maximum Rated Current (A) 1% Matte Tin (Sn) Dimensions L W T C 2512.5 2 J ±5 44.7 6.35 ±.25 3.18 ±.25 1. ±.2 1.3 ±.3 2512.75 2 F, J ±5 36.5 6.35 ±.25 3.18 ±.25 1. ±.2 1.3 ±.3 2512 1. 2 F, J ±5 31.6 6.35 ±.25 3.18 ±.25.8 ±.2 1.3 ±.3 2512 1.5 2 F, J ±5 25.8 6.35 ±.25 3.18 ±.25.65 ±.2 1.3 ±.3 2512 2. 2 F, J ±5 22.4 6.35 ±.25 3.18 ±.25.5 ±.2 1.3 ±.3 2512 2.5 2 F, J ±1 2. 6.35 ±.25 3.18 ±.25 1. ±.2 1.3 ±.3 2512 3. 2 F, J ±1 18.3 6.35 ±.25 3.18 ±.25.7 ±.2 1.3 ±.3 2512 3.5 2 F, J ±1 16.9 6.35 ±.25 3.18 ±.25.71 ±.2 1.3 ±.3 2512 4. 2 F, J ±1 15.8 6.35 ±.25 3.18 ±.25.6 ±.2 1.3 ±.3 2512 4.5 2 F, J ±1 14.9 6.35 ±.25 3.18 ±.25.58 ±.2 1.3 ±.3 2512 5. 2 F, J ±1 14.1 6.35 ±.25 3.18 ±.25.5 ±.2 1.3 ±.3 2512 5.5 2 F, J ±1 13.4 6.35 ±.25 3.18 ±.25.47 ±.2 1.3 ±.3 2512 6. 2 F, J ±1 12.9 6.35 ±.25 3.18 ±.25.5 ±.2 1.3 ±.3 2512 6.5 2 F, J ±1 12.4 6.35 ±.25 3.18 ±.25.47 ±.2 1.3 ±.3 2512 7. 2 F, J ±1 12. 6.35 ±.25 3.18 ±.25.45 ±.2 1.3 ±.3 Marking Alloy Plate (MnCu) Polymer Protective Coating Copper Plating (Cu) Unit: Standard resistance values and corresponding codes: (mω) Marking (mω) Marking.5 M5 M5 4. 4M R4.75 M75 M75 4.5 4M5 4M5 1. 1M R1 5. 5M R5 1.5 1M5 1M5 5.5 5M5 5M5 2. 2M R2 6. 6M R6 2.5 2M5 2M5 6.5 6M5 6M5 3. 3M R3 7. 7M R7 3.5 3M5 3M5 Note: Other nominal resistance values may also be available, please contact VENKEL LTD. for further information. 43
Characteristics Item Test Basis: JIS-C-522 Specification Requirements Typical Short-time Overload 2.5 x rated voltage DC for 5 sec. ±1% +.5W, no arc evidence within ±.4% Load Life 7 C, rated voltage for 1.5 hrs. on/.5 hr. for 1 hrs. <1 meg. ±3% +.1W, > 1 meg. ±5% Dielectric Withstanding Voltage 5V for 1 minute No insulation breakdown above 9-95V to Soldering Heat 27 C for 1 seconds ±1% +.5W, no mechanical damage Temperature Cycling EIA STD. 575, Para. 3.5-55 ~ +125 C, 5 cycles. ± 1.% Solderability 23 C, 3 seconds, flux applied 95% minimum coverage more than 97-98% Curing Heat +15 C for 1 minutes ±1% +.5W within ±.3% Dry Heat -125 C for 1, hours ±3% +.1W, no mechanical damage within ±.5% Pull Terminal Strength 5G load for 3 seconds ±1% +.5W, no mechanical damage within ±.2% PCB Terminal Strength 1/45mm bend for 1 seconds ±1% +.5W, no mechanical damage within ±.2% Moisture, Thermal Shock -55 C to +125 C, 5 cycles ±1% +.5W, no mechanical damage within ±.2% Moisture Load Life C, 95% R.H., 1.5 hr. on,.5 hr. off, 1, hours <1 meg ±3% +.1W, > 1 meg. ±5% Insulation 5V, 1 minute 1, meg. minimum more than 1 Meg. Voltage Coefficient Rated voltage and 1/1 times rated voltage +/-1ppm/v: above 1K ± within - 9ppm/V Low Temperature Exposure -55 C for 1, hours ±3% +.1W, no mechanical damage within ±.5% T.C.R. Temperature Coefficient of ( ppm/ C) (For CR Series only) 2 2512 case sizes: G & J Tol.: ± 2 (1W 1 Meg. W); F & D Tol.: ± 1 (1W 1 Meg. W); D, F, G & J Tol.: ±35 (over 1 Meg. W) 21 case size: ± 2 for F and J Tol. (1W 1 Meg. W); TCR is ±35 for values outside referenced range 15 case size: + 6 ~ -2 for (4.7W 9.1W); ± 25 for (1W 1 Meg. W) 44
Derating Curves DERATINg CURVE (CR Only) DERATINg CURVE (LCR only) DERATINg CURVE (ULCR Only) Rated power (%) 12 1 8 6 2 3 5 7 9 11 13 15 17 Ambient temperature ( C) Rated power (%) 12 1 8 6 2-55 -3 3 6 7 9 12 15 Ambient temperature ( C) Rated power (%) 12 1 8 6 2 3 5 7 9 11 13 15 17 Ambient temperature ( C) How to order SERIES CR6-8W LCR85 ULCR5 J T Add only if 13" Reel required 3 DIGIT (G & J TOL.) e.g. 2R2=2.2W 13=1KW PACKAGING T: TAPE 4 DIGIT (D & F TOL.) Jumper LCR, ULCR 4 DIGIT (F, G & J TOL.) e.g. 1R2=1.2W 12=1kW 3 zero s e.g. 3M=3mW R22=22mW R33=33mW R12=12mW TOLERANCE AT 25 C D: ±.5% F: ± 1% G: ± 2% J: ± 5% (No Tolerance specified for the Zero Ohm) Leave blank for standard termination. Standard Chip Resistor Termination finish is 1% matte Tin (Sn). If a 1% Tin designation is required, add Sn. P: For Palladium Silver Termination (PdAg) add P above (CR Series only) 6 % Chip Resistors may not be marked. (For CR Series) Please consult your salesperson if marking is required. (See the data sheet on Marking s) * E-24 Standard values that are available in 1%, may be marked with the standard 3-digit code identifier or an alpha numeric code. For the alpha numeric marking see page 6 for details. * NOTE: 15, 21 and 2 Resistors cannot be marked. * NOTE: See page 59 for Standard Values Note: Other nominal resistance values may also be available, please contact your sales representative for further information. See page 59 for Standard Values. Please Note: Venkel offers Engineering Kits for this product. See page 117 for details. For standard resistance values, please see EIA Standard Values on page 59. 45