2SD1979 Datasheet (Panasonic Semiconductor)

2SD1979, Silicon NPN Transistor

Transistor 2SD1979 Silicon NPN epitaxial planer type For low-voltage output amplification For muting For DC-DC converter 2.1±0.1 0.425 1.25±0.1 0.425 Unit: mm 0.65 q q q Low ON resistance Ron.

High foward current transfer ratio hFE.

S-Mini type package, allowing downsizing of the equipment and automatic insertion through the tape packing and the magazine packing.

(Ta=25˚C) Ratings 50 20 25 500 300 150 150 55 ~ +150 Unit V V V mA mA mW ˚C ˚C 1 2.0±0.2 1.3±0.1 0.65 3 2 0.9±0.1

2SD1979 Features

* Unit µA µA V 20 500 2500 0.1 0.6 80 4.5 1.0 V V MHz pF Ω FE Rank classification Rank hFE S 500 ~ 1500 3WS T 800 ~ 2500 3WT Measurement circuit 1kΩ IB=1mA f=1kHz V=0.3V Marking Symbol VB VV VA Ron= VB !1000(Ω) VA

* VB 1 Transistor PC

* Ta 240 24 Ta=25˚C 200 20 100 2SD197