Thick Film High Voltage Lead-Free Chip

Halogen-Free

Document No.

TRH-XX0S001I

Revise Date

2012/07/04

page number

3/10

TA-I TECHNOLOGY CO., LTD

5.1 Derating Curve :

For resistors operated at ambient temperature over 70℃ , power rating shall be derated in

accordance with figure 1.

P Max

Ambient Temp.(℃)

Figure 1

5.2 Rated Voltage:

The rated voltage is calculated by the following formula:

E= P * R

E.G. : What is RH12FTN 3003 the rated voltage ?

RH12FTN3003 P=1/4W ; R:3003=300KΩ=300,000Ω

= 273.86 V

Remark : However , it shall not exceed the maximum rated voltage .

Power ratio(%)