RX18J0T201

APPROVAL SHEET RX and RXS series PRECISION WIRE WOUND RESISTORS PRODUCE CHECK AND APPROVE ACCEPTED BY EM CE HONORABLE CUSTOMER Edison Chen Charles Chen June 20, 2024 June 20, 2024 www.thunder-resistor.com sales@thunder-resistor.com Page 1 of 7 1. PART NUMBER: Part number is identified by the series name, power rating, size code, tolerance, temperature coefficient, packing style and resistance value. Example： RX21 Series Name 15S J Power Tolerance rating 0 Temperature Coefficient B Packing Style 1R8 Resistance Value (1) Series name: RX and RXS series (RX21 SERIES is the China standard series name (= KNP series) (2) Power Rating: 15=1/2W; 16=1.0W; 17=2.0W; 18=3.0W; 19=5.0W; 6~30=6~30W (3) Size code: Blank = normal size; S：small size; M = tiny size (4) Tolerance: W±0.05%; B=±0.1%; C=±0.25%; D=±0.50%; F=±1.0%; J=±5.0% (5) T.C.R.: 7 = 5ppm/℃; 6 = 10ppm/℃; 5 = 15ppm/℃; 4 = 20ppm/℃; 3 = 25ppm/℃; 2 = 50ppm/℃; 1 = 100ppm/℃; 0=250ppm/℃ (6) Packaging Type: B = Bulk/Box; T = Tape/Box or Tube/Box; R = Reel/Box M = M type deforming; F = Vertical deforming (7) Resistance Value for J tolerance: R47、1R0、100、101、102、333、104…… (8) Resistance Value for tighten tolerance: R470、1R00、10R0、1000、1001、1002; 3． MARKING: Digital marking available with power rating and resistance value as well as the tolerance of the resistors. www.thunder-resistor.com sales@thunder-resistor.com Page 2 of 7 4. Electrical characteristics and dimension * Unless otherwise specified, all values are tested at the following condition: Temperature: 21℃ to 25℃; Relative humidity: 45% to 70%; * Rated Continuous Working Voltage (RCWV) = * Dielectric withstanding voltage for those with resistance lower than 20Ω is 300VDC. * Resistance out of range is available upon request. * High insulating requirement is available upon request. * Non-inductance wound is available on request. * Digital marking is available upon request. www.thunder-resistor.com Power Rating  Resistance Value sales@thunder-resistor.com Page 3 of 7 5. Derating curves and Surface temperature rising curve of the resistors VS power The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heat flow support of the printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature is not exceeded. These resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift increasing over operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a functional lifetime. Derating curves Temperature rising curves For resistors working at an ambiance temperature of 25℃ or above, the power rating shall be derated in accordance with the above curves. 6. The storage temperature range of the resistors should be in room temperature and humidity should be lower than 70%. www.thunder-resistor.com sales@thunder-resistor.com Page 4 of 7 7. Environmental characteristics (1) Insulation Resistance IEC 60115-1 4.6: Place resistors in V-block for 60 seconds and load 500VDC for 60 seconds, the insulation resistance should be high than 1,000 M Ohm. (2) Dielectric Withstanding Voltage IEC 60115-1 4.7: Place resistors in V-block and load dielectric withstanding voltage for 60 seconds, no breakdown or flashover and leakage current is less than 1mA. (3) Temperature Coefficient Test IEC 60115-1, 4.8: Test of resistors at room temperature and 60°C or 100°C on request above room temperature. Then measure the resistance. The Temperature Coefficient is calculated by the following equation and its value should be within the range requested. R  R0 1 Re sistor Temperature Coefficient    10 6 R0 t  t0 R = Resistance value under the testing temperature R0 = Resistance value at the room temperature t = the 2nd testing temperature t0 = Room temperature (4) Short Time Over Load Test IEC60115-1 4.13: At 10 times rated voltage or 2 times the maximum working voltage whichever is lower for 5 seconds, the resistor should be free from defects. The change of the resistance value should be within ±(0.5%+0.05 Ω) as compared with the value before the test. (5) Solderability IEC 60115-1, 4.17: 235±5°C for 3±0.5 Seconds, there are at least 95% solder coverage on the termination. (6) Resistance to soldering heat: IEC 60115-1, 4.18: 260±3°C for 10±1 Seconds, immersed to a point 3±0.5mm from the body. The change of the resistance value should be within ±(0.25%+0.05 Ω) as compared with the value before the test. www.thunder-resistor.com sales@thunder-resistor.com Page 5 of 7 (7) Climatic sequence IEC 60115-1, 4.19: -55°C to Room Temp. to +155°C to Room Temp. (5 cycles). The change of the resistance value shall be within ±(0.25%+0.05 Ω) for tight tolerance and ±(5.0%+0.05 Ω) for normal tolerance as compared with the value before the test. (8) Damp Heat Steady State IEC 60115-1, 4.24: 40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV or the maximum working voltage whichever is lower. The change of the resistance value should be within ±(0.50%+0.05 Ω) for tight tolerance and ±(5.0%+0.05 Ω) for normal tolerance as compared with the value before the test. (9) Load Life Test IEC 60115-1, 4.25: 70±2°C at RCWV or the maximum working voltage whichever is lower for 1,000+48/-0 Hr. (1.5Hr. on, 0.5Hr. off). The resistors shall be arranged not much effected mutually by the temperature of others and the excessive ventilation shall not be performed. The change of the resistance value should be within ±(0.50%+0.05 Ω) for tight tolerance and ±(5.0%+0.05 Ω) for normal tolerance as compared with the value before the test. (10) Accidental Overload Test IEC 60115-1, 4.26: 4 times RCWV for 1 Minute. No evidence of flaming or arcing (11) Resistance to Solvent IEC 60115-1, 4.30: IPA for 5±0.5 Min. with ultrasonic. No deterioration of coating and color code occurred. (12) Damp Heat Steady State Accelerated IEC 60115-1, 4.39: (85±2)°C; (85±5)% RH; U=0.1x√(P25xR) ≤100V 1000 hour. The change of the resistance shall be within ±(0.50%+0.05Ω) for tight tolerance and ±(1.0%+0.05 Ω) for normal tolerance as compared with the value before the load. (13) High voltage high pulse overload Apply 10 pulses with 10 times rated voltage to the resistor, the pulses parameter is 10μs/700μs. The change of the resistance shall be within ±(0.50%+0.05Ω) for tight tolerance and ±(5.0%+0.05 Ω) for normal tolerance as compared with the value before the load. www.thunder-resistor.com sales@thunder-resistor.com Page 6 of 7 Disclaimer All products, product specifications and data are subject to change without notice to improve reliability, function or design or otherwise. Thunder Precision Resistors makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product to the maximum extent permitted by applicable law. www.thunder-resistor.com sales@thunder-resistor.com Page 7 of 7