Walsin Technology Corporation WA04X 1%, Convex Type General purpose chip resistors array Size 0402x4 Customer : Approval No : Issue Date : Customer Approval : Page 1 of 7 WA04X_1% Version 6 Mar.-2007 Walsin Technology Corporation FEATURE 1. Small size and light weight 2. Reduced size of final equipment 3. Lower surface mounted assembly costs 4. Higher component and equipment reliability 5. Lead (Pb) free product is available APPLICATION * Consumer electrical equipment, PDA, Digital Camcoder, ... * EDP, Computer application * Mobile phone, Telecom DESCRIPTION The resistors array is 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 within tolerance by laser cutting 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) solder alloy. Fig 1. Consctruction of a Chip-R array WA04X Page 2 of 7 WA04X_1% Version 6 Mar.-2007 Walsin Technology Corporation QUICK REFERENCE DATA Item General Specification Series No. Size Resistance Tolerance Resistance Range TCR (ppm/C) 10R<1M R<10, R>1M Max. dissipation at Tamb=70C Max. Operation Voltage (DC or RMS) Max. overload voltage Climatic category WA04X(Convex) 0402x4 (1005x4) 1% 10 ~ 1M 300 1/16 W 25V 50V 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. DIMENSIONS WA04X L 2.00 0.10 W 1.00 0.10 T 0.45 0.10 P 0.50 0.05 A 0.40 0.10 B 0.20 0.10 C 0.30 0.05 G 0.25 0.10 CONSTRUCTION R1=R2=R3=R4 Page 3 of 7 WA04X_1% Version 6 Mar.-2007 Walsin Technology Corporation MARKING E24 series resistance : 3-digits marking Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance value. For values up to 910 the R is used as a decimal point. For values of 1K or greater the first 3 digits apply to the resistance value and fourth indicate the number of zeros to follow. Example RESISTANCE 10 12 100 6800 47000 3-digits marking 100 12R 101 682 473 E96 series resistance : No marking FUNCTIONAL DESCRIPTION Product characterization Standard values of nominal resistance are taken from the E24+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 Fig 2. Maximum dissipation in percentage of rated power As a function of the ambient temperature Page 4 of 7 WA04X_1% Version 6 Mar.-2007 Walsin Technology Corporation CATALOGUE NUMBERS The resistors have a catalogue number starting with . WA04 X 472_ J T _ Size code Type code Resistance code Tolerance Packaging code Termination code WA04 : 0402 per element X E24 : 2 significant digits followed by no. of zeros and a blank J : 5% T : 7" Reel taping F : 1% B : Bulk _ = SnPb base ("_" means a blank) : x4, convex 10 =100_ 220 =221_ Jumper =000_ L = Sn base (lead free) ("_" means a blank) E96 : 3 significant digits followed by no. of zeros 1. 102 =1020 37.4K =3742 Reeled tape packaging : 8mm width paper taping 10,000pcs per reel. 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 array Page 5 of 7 WA04X_1% Version 6 Mar.-2007 Walsin Technology Corporation TEST AND REQUIREMENTS(JIS C 5201-1 : 1998) Essentially all tests are carried out according to the schedule of IEC publication 60115-8, category LCT/UCT/56 (rated temperature range : Lower Category Temperature, Upper Category Temperature; damp heat, long term, 56 days). The testing also meets the requirements specified by EIA, EIAJ and JIS. The tests are carried out in accordance with IEC pub1ication 68, "Recommended basic climatic and mechanical robustness testing procedure for electronic components" and under standard atmospheric conditions according to IEC 60068-1, subclause 5.3. Unless otherwise specified, the following value supplied : Temperature: 15C to 35C, Relative humidity: 45% to 75%, Air pressure: 86kPa to 106 kPa (860 mbar to 1060 mbar). All soldering tests are performed with midly activated flux. TEST DC resistance Clause 4.5 REQUIREMENT Resistor PROCEDURE DC resistance values measured at the test voltages specified below : Within the specified <100K@10V, tolerance <10@0.1V,<100@0.3V,<1K@1.0V,<10K@3V, <1M@25V, <10M@30V Temperature Coefficient of Natural resistance change per change in degree centigrade. Resistance (T.C.R) R2 - R1 x 106 (ppm/C) t1 : 20C+5C-1C Clause 4.8 Jumper < 50m Refer to N/a "QUICK REFERENCE DATA" R1 (t2 - t1 ) 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) Clause 4.18 Solderability Clause4.17 Leaching Test Clause 4.18 Temperature cycling Clause 4.19 Load life (endurance) Clause 4.25 Permanent resistance change after a 5second application of a R/R max. (2%+0.10) voltage 2.5 times RCWV or the maximum overload voltage specified in the above list, whichever is less. Un-mounted chips completely immersed for 101second in a solder R/R max. (1%+0.05) bath at 2705C no visible damage < 50m < 50m Un-mounted chips completely immersed for 20.5second in a solder good tinning (>95% covered) bath at 2355 no 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 R/R max. (1%+0.05) at +155C3C, 2~3 minutes at 20C+5C-1C, total 5 continuous no visible damage cycles R/R max.(3%+0.10) 702C, 1000 hours, loaded with RCWV or Vmax,1.5 hours on and 0.5 hours off For 10R<1M ; R/R max.(5%+0.10) Load life in Humidity Clause 4.24 1000 hours, at rated continuous working voltage in humidity chamber controller at 40C2C and 90~95% relative humidity, 1.5hours on and 0.5 hours off Adhesion Clause 4.32 Pressurizing force: 5N, Test time: 101sec. For R<10, R1M R/R max.(3%+0.10) < 50m < 50m < 50m For 10R<1M ; R/R max.(5%+0.10) For R<10, R1M Page 6 of 7 WA04X_1% No remarkable damage or removal of the terminations. Version 6 Mar.-2007 Walsin Technology Corporation PACKAGING Paper Tape specifications (unit :mm) Series No. A B W F E WA04X 2.200.20 1.200.20 8.000.30 3.500.20 1.750.10 Series No. P1 P0 D T WA04X 2.000.05 4.000.10 1.50 +-00..10 Max. 0.6 Reel dimensions Page 7 of 7 Symbol A B C D (unit : mm) 178.02.0 60.01.0 13.00.2 9.00.5 WA04X_1% Version 6 Mar.-2007