Specialists in Thin Film Technology
SUSUMU INTERNATIONAL U.S.A.

Thin film and Susumu ・ What is Thin Film ? ・ Products Development History Product technical report Application notes ・ PC applications ・ RF applications ・ Automotive applications ・ Power source applications Technical customer service ・ Recommended land pattern ・ Recommended reflow temperature profile ・ Reel Specification ・ Tape specification ・ Power derating curve

Power derating curve (1) Rated power: Standard ambient temperature is 30°C. If ambient temp. is over 30°C, calculate the max power by multiplying rated power with the designated ratio from the derating curve.     (2) Rated power: E= √R*P   E: rated voltage(V), P: rated power (W), R: Rated resistance (Ohms).   The rated voltage is the corresponding voltage of DC or AC (impedance of the commercially used frequency) based on the formula above. ■Derating curve (RG, RM series) ■Derating curve RRseries RTseries RL0510 0816 1220 3720 3720W ■Derating curve(RL7520W) Rated current The current that causes 20°C temperature increase by impedance. If the ambient temperature exceeds 70°C, reduce the current according to the derating curve below. Power=(current)2 x DC Resistance of the product ■Derating curve TFL0510 0816 HPL0603 0510