WR02X470JAL

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) 1Ω~10MΩ ( ±5% tolerance ), Jumper Resistance Range 1Ω~ 10MΩ ( ±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 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 × 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 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_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 1MΩ 4.7Ω = 4R7_ 100Ω = 101_ 10KΩ 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 100Ω =1000 37.4KΩ =3742 (50Kpcs/Reel) G : 13” Reeled taping (70Kpcs/Reel) TEST CONDITION FOR JUMPER (0 Ω) Item Power Rating At 70°C Resistance Rated Current Peak Current within 5 sec Operating Temperature Page 5 of 7 WR02 1/20W MAX.50mΩ 1A 2.5A -55 ~ +125°C 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 0Ω Ω Resistor - DC resistance values measurement Within the specified tolerance - Temperature Coefficient of Resistance (T.C.R) Refer to “QUICK Natural resistance centigrade. R2 − R1 × 106 R1 (t2 − t1 ) change (ppm/°C) per change in degree REFERENCE DATA”