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PCF1CT52A102K Datasheet(PDF) 6 Page - KOA Speer Electronics, Inc. |
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PCF1CT52A102K Datasheet(HTML) 6 Page - KOA Speer Electronics, Inc. |
6 / 6 page SS-02 R6 PAGE 6 OF 6 Bolivar Drive ■ P.O. Box 547 ■ Bradford, PA 16701 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 ■ www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. KOA SPEER ELECTRONICS, INC. 5. Characteristics (Continued) 16 Moisture Life (Method 103) Resistance change shall be ± 5% of the Pre-test value. Initial resistance shall be measured. Resistors shall be placed in a chamber at relative humidity of 90 - 95% at ambient temperature of 40 ± 2°C. Then DC RCWV shall be applied intermittently 1-1/2 hr. (on), 1/2 hr. (off) for a total of 1,000 hrs. After removal from the chamber, the resistors shall be allowed to dry at room ambient for approxi- mately 1 hr. Final resistance shall be measured. 17 Operating Life (Method 108) Resistance change shall be ± 5% of the Pre-test value. Initial resistance shall be measured. Resistors shall be placed at ambient temperature of 70 ± 3°C. Then DC RCWV shall be applied intermittent- ly 1-1/2 hr. (on), 1/2 hr. (off) for a total of 1,000 hrs. After return to room temperature, final resistance shall be measured. 5.1 Derating Curve Under ambient temperature in excess of 70°C, the load shall be derated as shown in the figure below. 5.2 Rated Voltage Resistors shall have a rated direct current (DC) continuous working voltage or an approximate sine wave rootmean square (rms) alternation-current (AC) continuous working voltage at commercial line frequency and wave form corresponding to the power rating, as determined from the following formula: In no case shall the rated DC or rms AC continuous working voltage be greater than the applicable maximum value. Where, E = √ P x R E = Rated DC or rms AC continuous working voltage (V) P = Power rating (W) R = Nominal resistance (OHM) 100 80 60 40 20 -60 -40 -20 0 40 60 80 100 180 20 Ambient Temperature ( °C) 0 120 140 160 200 70 6. Marking The resistors shall be marked with color codes as per EIA-172. SS-02 R6 6/20/07 3:37 PM Page 6 |
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