Approval sheet WR02X(W) 5%, 1% Thick Film General purpose chip resistors Size 0201 *Contents in this sheet are subject to change without prior notice. Page 1 of 7 ASC_WR02X_V18 MAY - 2016 Approval sheet FEATURE 1. Small size and light weight 2. High reliability and stability 3. Reduced size of final equipment 4. Suitable for high density print circuit board assembly 5. Higher component and equipment reliability 6. Lead free product APPLICATION * Mobile phone * PDA * Camcorders * Palmtop computers * Hybrid module 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 pure Tin. Fig 1. Construction of Chip-R WR02X Page 2 of 7 ASC_WR02X_V18 MAY - 2016 Approval sheet QUICK REFERENCE DATA Item General Specification Series No. WR02X(W) Size code 0201(0603) 1~10M ( 5% tolerance ), Jumper Resistance Range 1~ 10M ( 1% tolerance ) Resistance Tolerance 1% 5% E96/E24 E24 10 - 10M, 200 TCR (ppm/C) 1 - 9.76, +600~-200 Max. dissipation @ Tamb=70C 1/20 W Max. Operation Voltage (DC or RMS) 25V Max. Overload Voltage (DC or RMS) 50V Operation temperature -55 ~ +125'C Note : 1. This is the maximum voltage that may be continuously supplied to the resistor element, see "IEC publication 60115-8" 2. Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by RCWV = Rated Power x Resistance Value or Max. RCWV listed above, whichever is lower. DIMENSION(unit : mm) Protective c oat WR02X(W) L 0.60 0.03 W 0.30 0.03 T 0.23 0.03 Tb 0.15 0.05 Tt 0.10 0.05 T End term ination Tb Resistive layer Tt Ceramic Substrate W T L MARKING WR02X(W) has no marking. Page 3 of 7 ASC_WR02X_V18 MAY - 2016 Approval sheet FUNCTIONAL DESCRIPTION Product characterization Standard values of nominal resistance are taken from the E24/E96 series for resistors with a tolerance of 5% & 1%. The values of the E24/E96 series are in accordance with "IEC publication 60063" Derating The power that the resistor can dissipate depends on the operating temperature; see Fig.2 Figure 2. Maximum 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. 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 235C during 2 seconds. The test condition for no leaching is 260C for 30 seconds. Typical examples of soldering processes that provide reliable joints without any damage are given in Fig 3. Fig 3. Infrared soldering profile for Chip Resistors WR02X(W) Page 4 of 7 ASC_WR02X_V18 MAY - 2016 Approval sheet CATALOGUE NUMBERS The resistors have a catalogue number starting with : WR02 X 472_ J A L Size code Type code Resistance code Tolerance Packaging code Termination code WR02 X : Normal 5%, E24: 2 significant digits followed by no. of zeros and a blank J : 5% A : 7" Reeled taping (15Kpcs/Reel) L = Sn base (lead free) : 0201 W : 1% For <10 and >1M 4.7 = 4R7_ 100 = 101_ 10K F : 1% P : Jumper T : 7" Reeled taping (10Kpcs/Reel) D : 7" Reeled taping (20Kpcs/Reel) = 103_ H : 13" Reeled taping 1%, E24+E96: 3 significant digits followed by no. of zeros 100 =1000 37.4K =3742 (50Kpcs/Reel) G : 13" Reeled taping (70Kpcs/Reel) TEST CONDITION FOR JUMPER (0 ) Item Power Rating At 70C Resistance Rated Current Peak Current within 5 sec Operating Temperature Page 5 of 7 WR02 1/20W MAX.50m 1A 2.5A -55 ~ +125C ASC_WR02X_V18 MAY - 2016 Approval sheet TEST AND REQUIREMENTS (JIS C 5201-1 : 1998) TEST Electrical Characteristics JISC5201-1: 1998 Clause 4.8 REQUIREMENT PROCEDURE / TEST METHOD 0 Resistor - DC resistance values measurement Within the specified tolerance - Temperature Coefficient of Resistance (T.C.R) Refer to "QUICK Natural resistance centigrade. R2 - R1 x 106 R1 (t2 - t1 ) change (ppm/C) per change in degree REFERENCE DATA" <50m t1 : 20C+5C-1C R1 : Resistance at reference temperature (20C+5C/1C) R2 : Resistance at test temperature (-55C or +125C) Short time overload (S.T.O.L) Clause 4.13 Resistance to soldering heat(R.S.H) Permanent resistance change after a 5second application of a voltage 2.5 times RCWV or the maximum R/R max. (2%+0.10) overload voltage specified in the above list, whichever is less. <50m Un-mounted chips completely immersed for 101second R/R max. (1%+0.05) in a SAC solder bath at 2605C no visible damage <50m Clause 4.18 Solderability Clause 4.17 Temperature cycling Clause 4.19 Un-mounted chips completely immersed for 20.8second 95% coverage min., good tinning and no in a SAC solder bath at 2355 visible damage 30 minutes at -55C3C, 2~3 minutes at 20C+5C-1C, 30 minutes at +125C3C, 2~3 minutes at 20C+5C1C, total 5 continuous cycles R/R max. (1%+0.05) Damp Heat 1000 +48/-0 hours, loaded with RCWV or Vmax in 10R<1M : (Load life in humidity) Clause 4.24 humidity chamber controller at 40C2C and 90~95% R/R max. (3%+0.10) R<10, R1M : relative humidity, 1.5hours on and 0.5 hours off Load Life (Endurance) 1000+48/-0 hours; loaded with RCWV or Vmax in chamber Clause 4.25 controller 702C, 1.5 hours on and 0.5 hours off Bending strength Resistors mounted on a 90mm glass epoxy resin No visual damaged, Clause 4.33 Adhesion < 50m R/R max. (5%+0.10) Ditto. < 50m PCB(FR4), bending once 5mm for 10sec. R/R max. (1%+0.05) Pressurizing force: 3N, Test time: 101sec. No remarkable damage or removal of the terminations Clause 4.32 Page 6 of 7 < 50m ASC_WR02X_V18 MAY - 2016 Approval sheet PACKAGING Paper Tape specifications (unit :mm) Series No. A B W F E WR02X 0.670.05 0.370.05 8.000.20 3.500.05 1.750.10 Series No. P1 P0 D T WR02X 2.000.05 4.000.05 1.50 +-00..10 0.450.05 Reel dimensions Symbol A B C D 7" Reel 178.00.2 60.01.0 13.00.2 9.00.5 10" Reel 254.02.0 100.01.0 13.00.2 9.00.5 13" Reel 330.02.0 100.01.0 13.00.2 9.00.5 Taping quantity and Tape material - Chip resistors 10,000 / 15,000 / 20,000 pcs 7" Reel, Paper tape. Chip resistors 50,000 / 70,000 pcs 13" Reel, Paper tape. Page 7 of 7 ASC_WR02X_V18 MAY - 2016