WW06PR270FTL

Approval sheet WW08P, WW06P ±1%, ±5% 47mΩ~976mΩ High Power Low Ohmic Chip Resistors Size 0805 1/3W ; 0603 1/4W *Contents in this sheet are subject to change without prior notice. Page 1 of 7 ASC_WW08-06P_V08 Jul.2010 Approval sheet FEATURE 1. 2. 3. 4. 5. Small size and light weight High reliability and stability Reduced size of final equipment High precision RoHS compliant and Lead free products APPLICATION





High accuracy dc-power supply Digital multi-meter Telecommunication Computer Automotive industry Medical and military equipment 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 Tin (lead free) alloy. Fig 1. Consctruction of Chip-R Page 2 of 7 ASC_WW08-06P_V08 Jul.2010 Approval sheet QUICK REFERENCE DATA Item General Specification Series No. WW08P WW06P Size code 0805 (2012) 0603(1608) ±1%, ±5% Resistance Tolerance Resistance Range 0.047Ω~0.976Ω(E96+E24 series) TCR (ppm/°C) -55°C ~ +155°C 0.047Ω~0.091Ω 0.100Ω~0.976Ω ≤ ± 200 ppm/°C ≤ ± 250 ppm/°C ≤ ± 150 ppm/°C ≤ ± 200 ppm/°C Max. dissipation at Tamb=70°C 1/3 W 1/4 W Max. Operation Voltage (DC or RMS) 150V 50V Max. Overload Voltage (DC or RMS) 300V 100V Climatic category (IEC 60068) 55/155/56 Basic specification JIS C 5201-1:1998 / IEC 60068-2-58:2004 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 × Resistance Value or Max. RCWV listed above, whichever is lower. DIMENSIONS(unit : mm) Part No WW08P WW06P L 2.00 ± 0.10 1.60 ± 0.10 W 1.25 ± 0.10 0.80 ± 0.10 T 0.50 ± 0.15 0.45 ± 0.15 Tb 0.40 ± 0.20 0.30 ± 0.15 Tt 0.40 ± 0.20 0.30 ± 0.10 MARKING Each resistor is marked with a three-digit(WW06P ±1%;±5%) or four-digit(WW08P ±1%;±5%) code on the protective coating to designate the nominal resistance value. * Remark：0603 resistor value from 0.1Ω to 0.976Ω E48/E96 series use 2 significant digits followed by letter.(Example R560 = R56 ； R402= 59Z) ** Remark：0603 resistor value from 0.047Ω to 0.091Ω use the last Two-digits followed by “M” equals “m”, means 1/1000(Example R047 = 47M ； R050= 50M) Rated Resistance Resistance 47mΩ 50mΩ 51mΩ 55mΩ Page 3 of 7 Code 0805 R047 R050 R051 R055 Code 0603 47M 50M 51M 55M Resistance 56mΩ 60mΩ 62mΩ 65mΩ Code 0805 R056 R060 R062 R065 Code 0603 56M 60M 62M 65M Resistance 68mΩ 70mΩ 75mΩ 80mΩ ASC_WW08-06P_V08 Code 0805 R068 R070 R075 R080 Code 0603 68M 70M 75M 80M Resistance 82mΩ 85mΩ 90mΩ 91mΩ Code 0805 R082 R085 R090 R091 Code 0603 82M 85M 90M 91M Jul.2010 Approval sheet FUNCTIONAL DESCRIPTION Product characterization Standard values of nominal resistance are taken from the E96&E24 series for resistors with a tolerance of ±1%,±5%. The values of the E96/E24 series are in accordance with “IEC publication 60063”. Derating The power that the resistor can dissipate depends on the operating temperature; see Fig.2 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 260°C 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 235°C 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 3. Fig 3. Infrared soldering profile for Chip Resistors Page 4 of 7 ASC_WW08-06P_V08 Jul.2010 Approval sheet CATALOGUE NUMBERS The resistors have a catalogue number starting with. WW08 P R050 F T L Size code Type code Resistance code Tolerance Packaging code Termination code WW08: 0805 P :Power E96+E24: J : ±5% T L = Sn base WW06: 0603 0805 size=0.33W “R” is first digit followed by 3 significant digits.(0805) F : ±1% 0603 size=0.25W 50mΩ =R050 510mΩ =R510 : 7” Reeled taping paper taping 5Kpcs/reel. (lead free) “R” is first digit followed by 2 Significant digit.(0603) 100mΩ =R10 510mΩ =R51 0603 0.1Ω~0.976Ω E48/E96 2 significant digits followed by letter 0603 0.047Ω~0.091Ω E24 2 significant digits followed by M (M=milli Ω). (R047=47m)  Reeled tape packaging Page 5 of 7 : 8mm width paper taping 5000pcs per 7” reel. ASC_WW08-06P_V08 Jul.2010 Approval sheet TEST AND REQUIREMENTS Basic specification : JIS C 5201-1 : 1998 TEST Clause 4.8 Temperature Coefficient of Resistance (TCR ) REQUIREMENT PROCEDURE Natural resistance change per change in degree Refer to quick reference data for T.C.R centigrade. specification R2 − R1 × 106 R1 (t2 − t1 ) (ppm/°C) R1 : Resistance at reference temperature R2 : Resistance at test temperature t1 : 20℃+5℃-1℃. Clause 4.13 Short time overload Clause 4.18 Resistance to soldering heat(R.S.H) Clause4.17 Solderability Clause 4.19 Temperature cycling 5.0× Rated power or Max. Overload Voltage Measure resistance after 30 minutes. for 5 sec. ∆R/R max. J:≦ ±(2%+0.5mΩ) Un-mounted chips completely immersed for 10±1second No visible damage in a SAC solder bath at 260℃±5ºC. ∆R/R max. J:≦ ±(1%+0.5mΩ) F:≦ ±(0.5%+0.5mΩ) Un-mounted chips completely immersed for 2±0.5 Good tinning (>95% covered) second in a SAC solder bath at 235℃±5℃. No visible damage 1. 2. 30 minutes at -55°C±3°C, 2~3 minutes at 20°C+5°C-1°C, 3. 30 minutes at +155°±3°C, 4. 2~3 minutes at 20°C+5°C-1°C, Total 5 continuous cycles. Clause 4.25 Load life (endurance) Clause 4.24 Load life in Humidity F:≦ ±(1%+0.5mΩ) No visible damage ∆R/R max. J≦ ±(1%+1mΩ) F≦ ±(0.5%+1mΩ) 1000 +48/-0 hours, loaded with RCWV or Vmax in No visible damage chamber controller 70±2ºC, 1.5 hours on and 0.5 hours ∆R/R max. J≦ ±(3%+0.5mΩ) off. F≦ ±(1%+0.5mΩ) 1000 +48/-0 hours, loaded with RCWV or Vmax in No visible damage humidity chamber controller at 40°C±2°C and 90~95% ∆R/R max. J≦ ±(3%+0.5mΩ) relative humidity, 1.5hours on and 0.5 hours off. F≦ ±(1%+0.5mΩ) Bending strength Resistors mounted on a 90mm glass epoxy resin No visible damage ∆R/R max. J≦ ±(1%+1mΩ) PCB(FR4); bending : 3 mm, once for 10 seconds. F≦ ±(0.5%+1mΩ) Clause 4.32 Pressurizing force: 5N, Test time: 10±1sec. No remarkable damage or removal of the terminations Apply the maximum overload voltage (DC) for 1minute. R≧10GΩ Apply the maximum overload voltage (AC) for 1 minute. No breakdown or flashover Clause 4.33 Adhesion Clause 4.6 Insulation Resistance Clause 4.7 Dielectric Withstand Voltage Page 6 of 7 ASC_WW08-06P_V08 Jul.2010 Approval sheet PACKAGING Paper Tape specifications (unit :mm) Series No. A B WW06P 1.90±0.20 1.10±0.20 WW08P 2.40±0.20 1.65±0.20 Series No. P1 4.00±0.10 WW06P W F E 8.00±0.30 3.50±0.20 1.75±0.10 P0 ΦD T 4.00±0.10 Φ1.50 +−00..10 0.65±0.05 WW08P Max. 1.0 Reel dimensions Page 7 of 7 Symbol A B C D (unit : mm) Φ178.0±2.0 Φ60.0±1.0 13.0±0.2 9.0±0.5 ASC_WW08-06P_V08 Jul.2010