WWXXP WALSIN | Alldatasheet
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Page 1 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 WW20P, WW12P, WW10P, WW08P, WW06P, WW04P 1%, 5% Thick Film High Power Current Sensing Chip Resistors Size 2010, 1206, 1210, 0805, 0603, 0402 (Automotive Grade Compliant) *Contents in this sheet are subject to change without prior notice.
Page 2 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 FEATURE 1. High power rating and compact size 2. Automotive AEC Q-200 Compliant 3. 100% CCD Visual inspection 4. RoHS compliant and Lead free products APPLICATION Power supply PDA Digital meter Computer Automotives Battery charger DC-DC power converter
DESCRIPTION
The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to nominated value within tolerance which controlled by laser trimming of this resistive layer. The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For ease of soldering the outer layer of these end terminations is a lead free tin alloy. Fig 1. Construction of Chip-R
Page 3 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 QUICK REFERENCE DATA Item General Specification Series No. WW20P WW10P WW12P WW08P WW06P WW04P Size code 2010 (5025 ) 1210 ( 3225 ) 1206 (3216) 0805 (2012) 0603 (168) 0402 (1005) Resistance Tolerance 5%, 1% (E24+E96) 0.976 0.100 ~ 0.976 0.100 ~ 0.976 TCR (ppm/C) 0.010 ~ 0.015R 0.016 ~ 0.021R 0.022 ~ 0.039R 0.040 ~ 0.050R 0.051 ~ 0.464R 0.470 ~ 0.976R 0 ~ +1000 0 ~ +800 0 ~ +600 0 ~ +400 0 ~ +200 +/-100 0 ~ +1000 0 ~ +800 0 ~ +600 0 ~ +500 0 ~ +250 +/-100 0 ~ +400 0 ~ +200 +/-100 0 ~ +200 +/-100 0 ~ +250 +/-100 0 ~ +300 0 ~ +200 Max. dissipation at Tamb=70C 3/4 W 2/3W 1/2 W 1/3 W 1/4W 1/8W Operation Temperature -55/+155’C MECHANICAL DATA (unit: mm) Dimension 2010 1210 1206 0805 0603 0402
Page 4 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 MARKING For 0805/1206/1210/2010, each resistor is marked with a four -digit code on the protective coating to designate the nominal resistance value. Example: R100 = 0.10 R510 = 0.51 For 0603, e ach resistor is marked with a three-digit code on the protective coating to designate the nominal resistance value. Example: R10 = 0.10 R51 = 0.51 For 0402, no marking is defined!
Page 5 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 FUNCTIONAL DESCRIPTION Product characterization Standard values of nominal resistance are taken from the E96 & E24 series for resistors with a tolerance of 5% & 1%. The values of the E24/E96 series are in accordance with “IEC publication 60063”. Derating curve The power that the resistor can dissipate depends on the operating temperature; see Fig.3 Fig 3. Max. dissipation in percentage of rated power as a function of the ambient temperature MOUNTING Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by automatic placement systems. Chip placement can be on ceramic substrates and printed-circuit boards (PCBs). Electrical connection to the circuit is by individual soldering condition. The end terminations guarantee a reliable contact.
Page 6 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 SOLDERING CONDITION The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260C for 10 seconds. Therefore, it is possible to mount Surface Mount Resistors on one side of a PCB and other discrete components on the reverse (mixed PCBs). Surface Mount Resistors are tested for solderability at 2 35C during 2 seconds. The test condition for no leaching is 260 C for 30 seconds. Typical examples of soldering processes that provide reliable joints without any damage are given in Fig 4. Fig 4. Infrared soldering profile for Chip Resistors CATALOGUE NUMBERS The resistors have a catalogue number starting with . WW20 P R100 J T L J Size code WW20 : 2010 WW10 : 1210 WW12 : 1206 WW08 : 0805 WW06 : 0603 WW04 : 0402 Type code P : Power Resistance code E96 +E24: R is first digit followed by 3 significant digits. 0.10 = R100 Tolerance J : 5% F : 1% Packaging code T : Reeled Termination code L = Sn base (lead free) Special code J = Automotive grade AEC Q-200 compliant, 100% CCD visual inspection
Page 7 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 TEST AND REQUIREMENTS ( AEC Q-200 ) TEST PROCEDURE / TEST METHOD REQUIREMENT High Temperature Exposure MIL-STD-202 Method 108 1000+48/-0 hours; without load in a temperature chamber controlled 1552C R/R max. 3% No visible damage Temperature cycling JESD22 Method JA-104 1000 cycles, -55℃ ~ +125℃, dwell time 30min maximum. R/R max. 1% No visible damage Moisture Resistance MIL-STD-202 method 106 652C, 80~100% RH, 10 cycles, 24 hours/ cycle R/R max. 1% No visible damage Bias Humidity MIL-STD-202 method 103 1000+48/-0 hours; 85C, 85% RH, 10% of operation power. R/R max. 3% No visible damage Operational Life MIL-STD-202 method 108 1000+48/-0 hours; 35% of operation power, 1252C R/R max. 3% No visible damage Dimension JESD22 method JB-100 Verify physical dimensions (L, W, T, Tb, Tt) Within the specified tolerance for WTC. Resistance to Solvents : MIL- STD-202 Method 215 Solvent is Isopropyl alcohol, immersion 3mins at 25℃ and brush 10 strokes with a toothbrush with a handle made of a non-reactive material (wet bristle), immersion and brush 3 times and then air blow dry. R/R max. 1% No visible damage Mechanical Shock MIL-STD-202 method 213 Test ½ Sine Pulse, Peak value: 100g, normal duration: 6ms, Velocity change:12.3ft/sec. 10 shocks in each direction, total 30 shocks. R/R max. 1% No visible damage. Vibration MIL-STD-202 method 204 Test 5g’s for 20 min., 12 cycles each of 3 orientatio ns. R/R max. 1% No visible damage. Thermal shock MIL-STD-202 method 107 Test –55 to 155℃/ dwell time 15min/ Max transfer time 20sec 300cycles R/R max. 1% No visible damage Resistance to soldering heat (R.S.H) MIL-STD-202 method 210 Un-mounted chips completely immersed for 10±1second in a SAC solder bath at 260℃±5ºC ΔR/R max. 1% no visible damage ESD AEC-Q200-002 Human body model 2Kohm, 150pF, Test voltage: 0402/0603: 1KV ; 0805 & above sizes: 4KV R/R max. 3% No visible damage Solderability J-STD-002 a) Bake the sample for 155℃ dwell time 4hrs/ solder dipping 235℃/ 5sec. b) Steam the sample dwell time 8 hour/ solder dipping 215 ℃/ 5sec. c) Steam the sample dwell time 8 hour/ solder dipping 260 ℃/ 7sec. 95% coverage min., good tinning and no visible damage
Electrical Characteristics
JISC5201-1: 1998 Clause 4.8 - DC resistance values measurement - Temperature Coefficient of Resistance (T.C.R) Natural resistance change per change in degree centigrade. 121 12 10 ttR RR (ppm/C) t1 : 20°C+5°C-1°C R1 : Resistance at reference temperature R2 : Resistance at test temperature +155°C Within the specified tolerance Refer to “QUICK REFERENCE DATA”
Page 8 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 Bending strength AEC-Q200-005 Resistors mounted on a 90mm glass epoxy resin PCB(FR4),bending once 2mm for 60sec. R/R max. 1% No visible damage Adhesion AEC-Q200-006 Pressurizing force: 0402/0603: 10N 0805/1206/1210/2010: 17.7N Test time: 60±1sec. R/R max. 1% No remarkable damage or removal of the terminations
Page 9 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 PACKAGING Tape specifications (unit: mm) Type A B W F E Type P1 P0 D T WW20 4.00±0.10 4.00±0.10 1.0 0.050.1 Max. 1.2 Reel dimensions (unit : mm) A B C D
Page 10 of 8 ASC_WWxxP_J_AUTO_2016_V01 FEB - 2016 Taping Quantity ‧ WW20 by plastic tape taping 4,000 pcs per reel. ‧ WW12, WW10, WW08, WW06 by paper tape taping 5,000 pcs per reel ‧ WW04 by paper tape taping 10,000 pcs per reel