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BD678A

Complementary power Darlington transistors

STMicroelectronics 

BD6xxx

Complementary power Darlington transistors

Features

■ Good hFE linearity

■ High fT frequency

■ Monolithic Darlington configuration with

integrated antiparallel collector-emitter diode

Applications

■ Linear and switching industrial equipment

Description

The devices are manufactured in planar base

island technology with monolithic Darlington

configuration.

.

1

2

3

SOT-32

Figure 1. Internal schematic diagram

R1 typ.= 15 KΩ

Table 1. Device summary

Order codes

BD677

BD677A

BD678

BD678A

BD679

BD679A

BD680

BD680A

BD681

BD682

Marking

BD677

BD677A

BD678

BD678A

BD679

BD679A

BD680

BD680A

BD681

BD682

January 2008

Rev 5

Package

SOT-32

R2 typ.= 100 Ω

Packaging

Tube

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