March 2008 Rev 2 1/11
11
2STD1665
Low voltage fast-switching NPN power transistor
Features
■ Very low collector to emitter saturation
volatage
■ High current gain characteristic
■ Fast-switching speed
■ Through-hole IPAK (TO-251) power package
in tube (suffix”-1”)
■ Surface mounting DPAK (TO-252) power
package in tape & reel (suffix”T4”)
Applications
■ Ccfl drivers
■ Voltage regulators
■ Relay drivers
■ High efficiency low voltage switching
applications
Description
The device is manufactured in NPN Planar
Technology by using a “Base Island” layout. The
resulting transistor shows exceptional high gain
performance coupled with very low saturation
voltage.
Figure 1. Internal schematic diagram
Table 1. Device summary
3
2
1
1
3
IPAK
TO251
( Suffix “-1” )
DPAK
TO252
( Suffix “T4” )
Order code Marking Package Packing
2STD1665T4 D1665 DPAK Tape & reel
2STD1665-1 D1665 IPAK Tube
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