Walsin Technology Corporation WR04X 1%, 5% General purpose chip resistors Size 0402 Customer : Approval No : Issue Date : Customer Approval : Page 1 of 7 WR04X Version 13 Nov.-2006 Walsin Technology Corporation FEATURE 1. Small size and light weight 2. High reliability and stability 3. Reduced size of final equipment 4. Lower assembly costs 5. Higher component and equipment reliability 6. Lead free product is available APPLICATION * Mobile phone * PDA * Camcorders * Pagers * Palmtop computers 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-tin or Tin (Lead free) alloy. Fig 1. Consctruction of Chip-R WR04 Page 2 of 7 WR04X Version 13 Nov.-2006 Walsin Technology Corporation QUICK REFERENCE DATA Item General Specification Series No. WR04 Size code 0402(1005) Resistance Range 1~10M(5% tolerance),10~1M(1% tolerance), Jumper 1% 5% E96/E24 E24 Resistance Tolerance TCR (ppm/C) R1M -300~+500 200 200 -300~+500 -300~+500 1MR10 R10 Max. dissipation @ Tamb=70C 1/16 W Max. Operation Voltage (DC or RMS) 50V Max. Overload Voltage (DC or RMS) 100V Climatic category (IEC 60068) 55/155/56 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. 3. For Resistance range 1~10 and 1M~10M of tolerance 1% series No. is WR04W, please refer to specification respectively. Dimensions: WR04X Protec tive c oat L 1.00 0.05 W 0.50 0.05 Tb T 0.35 0.05 Tt Tb 0.25 0.10 Tt 0.20 0.10 T End termination Resistive layer Ceramic Substrate W T L Page 3 of 7 WR04X Version 13 Nov.-2006 Walsin Technology Corporation MARKING WR04 has no marking on the product overcoat for both 5% & 1%. FUNCTIONAL DESCRIPTION Product characterization Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of 5%, and E96 series for resistors with a tolerance of 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 CATALOGUE NUMBERS The resistors have a catalogue number starting with : WR04 X 3742 J T _ Size code Type code Resistance code Tolerance Packaging code Termination code WR04 : 0402 X : Normal E24 : 2 significant digits followed by no. of zeros and a blank F : 1% T : 7" Reeled taping J : 5% B : Bulk _ = SnPb base ("_" means a blank) W : Out of resistance range (1% of 1 ~ 10, 1M~ 10M) 4.7 =4R7_ 10 =100_ 220 =221_ Jumper =000_ P : Jumper L = Sn base (lead free) ("_" means a blank) E96 : 3 significant digits followed by no. of zeros 102 =1020 37.4K =3742 1. Reeled tape packaging : 8mm width paper taping 10,000pcs per reel. 2. Bulk packaging Page 4 of 7 : 10,000pcs per poly-bag WR04X Version 13 Nov.-2006 Walsin Technology Corporation 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 one minute. 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 60 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 WR04X TEST CONDITION FOR JUMPER (0 ) Item WR04X Power Rating At 70C 1/16W Resistance MAX. 50m Rated Current 1A Peak Current 1.5A -55~155C Operating Temperature Page 5 of 7 WR04X Version 13 Nov.-2006 Walsin Technology Corporation TEST AND REQUIREMENTS(JIS C 5201-1 : 1998) TEST REQUIREMENT PROCEDURE / TEST METHOD Resistor DC resistance DC resistance values measured at the test voltages specified below : Clause 4.5 <10@0.1V, <100@0.3V, <1K@1.0V, <10K@3V, <100K@10V, <1M@25V, <10M@30V Temperature Coefficient of Resistance(T.C.R) Clause 4.8 Within the specified tolerance <50m Refer to Natural resistance change per change in degree centigrade. R2 - R1 x 106 R1 (t2 - t1 ) 0 "QUICK REFERENCE DATA" (ppm/C) t1 : 20C+5C-1C N/a R1 : Resistance at reference temperature R2 : Resistance at test temperature 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 overload voltage specified in the R/R max. (2%+0.10) above list, whichever is less. <50m Un-mounted chips completely immersed for 101second in a solder R/R max. (1%+0.05) bath at 2705C no visible damage <50m Clause 4.18 Solderability Clause 4.17 Leach Test Clause 4.18 Temperature cycling Clause 4.19 Un-mounted chips completely immersed for 20.5second in a solder 95% coverage min., good tinning and no bath at 2355 visible damage Un-mounted chips completely immersed for 601second in a solder Ditto bath at 2605 30 minutes at -55C3C, 2~3 minutes at 20C+5C-1C, 30 minutes at R/R max. (1%+0.05) +155C3C, 2~3 minutes at 20C+5C-1C, total 5 continuous cycles Damp Heat 1000+48/-0 hours; 1.5hours ON, 0.5hours OFF at RCWV in a humidity (Load life in humidity) chamber controlled 402C, 90~95% RH 10R<1M : R/R max. (3%+0.10) < 50m < 50m R<10, R1M : Clause 4.24 R/R max. (5%+0.10) Load Life (Endurance) 1000+48/-0 hours; loaded with Pn or Vmax; 1.5 hours ON, 0.5 hours OFF Ditto. Clause 4.25 Bending strength Clause 4.33 Adhesion Resistors mounted on a 90mm glass epoxy resin PCB(FR4), bending No visual damaged, R/R max. (1%+0.05) Pressurizing force: 5N, Test time: 101sec. No remarkable damage or removal of the terminations Clause 4.32 Page 6 of 7 < 50m once 5mm for 10sec. WR04X Version 13 Nov.-2006 Walsin Technology Corporation PACKAGING Paper Tape specifications (unit :mm) Series No. A B W F E WR04X 1.200.10 0.70.10 8.000.20 3.500.05 1.750.10 Series No. P1 P0 D T WR04X 2.000.10 4.000.10 1.50 +-00..10 0.400.05 Reel dimensions Symbol A B C D (unit : mm) 178.02.0 60.01.0 13.00.2 9.00.5 Taping quantity and Tape material - Chip resistors 10,000 pcs/reel, Paper tape. Page 7 of 7 WR04X Version 13 Nov.-2006