October 2009

Doc ID 13984 Rev 3

1/14

14

STL128DN

High voltage fast-switching NPN power transistor

Features

Applications

power converters

Description

The device is manufactured using high voltage

multi epitaxial planar technology for high switching

speeds and medium voltage capability. It uses a

cellular emitter structure with planar edge

termination to enhance switching speeds while

maintaining the wide RBSOA. The device is

designed for use in lighting applications and low

cost switch-mode power supplies.

Figure 1.

Internal schematic diagram

TO-220

1

2

3

TAB

1

2

3

TO-220FP

1

3

TO-252 (DPAK)

TAB

Table 1.

Device summary

Order codes

Marking

Packages

Packaging

STL128DN

L128DN

TO-220

Tube

STL128DNFP

L128DNFP

TO-220FP

Tube

STLD128DNT4

LD128DN

DPAK

Tape and reel

www.st.com