July 2007

Rev 2

1/9

9

BD241A

BD241C

NPN power transistors

Features

■

NPN transistors

Applications

■

Audio, general purpose switching and amplifier

transistors

Description

The devices are manufactured in Planar

technology with “Base Island” layout. The

resulting transistor shows exceptional high gain

performance coupled with very low saturation

voltage. The PNP types are BD242A and

BD242C.

.

Figure 1.

Internal schematic diagram

1

2

3

TO-220

www.st.com

Table 1.

Device summary

Order codes

Marking

Package

Packaging

BD241A

BD241C

BD241A

BD241C

TO-220

TO-220

Tube

Tube