Precautions for driving TRs safety

Foreword to the customers before using ROHM transistors

Whan a TR is operated, it naturally accompanies electric and thermal loads. The life of TR becomes short if such loads are too much and may be broken in the worst case. To avoi such events, it is highly recommended to check beforehand if the conditions of driving TR should have problem or not. In this section, we explain as to the method of judging whether a selected TR can be used or not. Please go through this over this material to avoid possible future trouble and use TRs in safety.

Before Judgement : From selection to mounting

1.Selection of transistor

search the possible candidate from web & short form catalogue.

ROHM H.P. TR on Web.

2.Get samples and data-sheets

Some sample can be purchase also from ROHM Website. Availability of samples for net purchase is now expanding.

3.Mount a TR on the evaluation board or function check.

■ Check points !
if a chosen TR surely works safely on the actual circuit. if a chosen TR functions for a long time stably (=reliability)after its starting of work. if there are enough electrical margin for such TR drive.