WR02X3002FALV

Approval sheet WR02X(W) ±5%, ±1% General purpose & Anti-sulfuration chip resistors Size 0201 *Contents in this sheet are subject to change without prior notice. Page 1 of 7 ASC_WR02X_V_V01 Jun-2012 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. Anti-sulfuration ASTM B-809 compliant 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_V_V01 Jun-2012 Approval sheet QUICK REFERENCE DATA Item General Specification Series No. WR02X(W) Size code 0201(0603) 1Ω~10MΩ ( ±5% tolerance ), Jumper Resistance Range 1Ω~3.3MΩ ( ±1% tolerance ) Resistance Tolerance ±1% ±5% E96/E24 E24 10Ω - 10MΩ, ≤±200 TCR (ppm/°C) 1 - 9.76Ω, +600~-200 Max. dissipation @ Tamb=70°C 1/20 W Max. Operation Voltage (DC or RMS) 25V Max. Overload Voltage (DC or RMS) 50V Climatic category (IEC 60068) 55/125/56 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 × 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_V_V01 Jun-2012 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 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 WR02X(W) Page 4 of 7 ASC_WR02X_V_V01 Jun-2012 Approval sheet CATALOGUE NUMBERS The resistors have a catalogue number starting with : WR02 X 472_ J A Size code Type code Resistance code Tolerance Packaging code WR02 0201 X : Normal 5%, E24: 2 significant digits followed by no. of zeros J : ±5% A : 7” Reeled taping (15Kpcs/Reel) : W : 1% For 1MΩ 4.7Ω =4R7_ 10Ω =100_ 220Ω =221_ 10KΩ = 103 Jumper =000_ F : ±1% P : Jumper D : 7” Reeled taping (20Kpcs/Reel) L Termination code L = Sn base (lead free) V Special code V = 1. 100% CCD visual inspection 2. Anti-sulfur ASTM B-809 compliant (“_” means a blank) 1%, E24+E96: 3 significant digits followed by no. of zeros Page 5 of 7 4.7Ω =4R70 10Ω =10R0 100Ω =1000 37.4KΩ =3742 ASC_WR02X_V_V01 Jun-2012 Approval sheet TEST AND REQUIREMENTS (JIS C 5201-1 : 1998) TEST DC resistance Clause 4.5 Temperature Coefficient of Resistance(T.C.R) Clause 4.8 REQUIREMENT PROCEDURE / TEST METHOD Resistor 0Ω Ω Within the specified tolerance