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STD8NM50N, STF8NM50N
STP8NM50N, STU8NM50N
N-channel 500 V, 0.73 , 5 A MDmeshTMII Power MOSFET
in DPAK, IPAK, TO-220 and TO-220FP

Features
Order codes VDSS@TJMAX RDS(on)max. ID 3
1 3
2
STD8NM50N 1

STF8NM50N DPAK IPAK
550 V < 0.79 5A
STP8NM50N
STU8NM50N

100% avalanche tested
Low input capacitances and gate charge 3
2 3
1 2
Low gate input resistance 1

TO-220FP TO-220

Application
Switching applications
Figure 1. Internal schematic diagram
Description
These devices are 500 V N-channel Power
MOSFETs made using the second generation of
MDmeshTM technology. This revolutionary Power
MOSFET associates a new vertical structure to
the company's strip layout to yield one of the
world's lowest on-resistance and gate charge. It is
therefore suitable for the most demanding high
efficiency converters.

Table 1. Device summary
Order codes Marking Packages Packaging

STD8NM50N DPAK Tape and reel
STF8NM50N TO-220FP
8NM50N
STP8NM50N TO-220 Tube
STU8NM50N IPAK

February 2011 Doc ID 17413 Rev 3 1/21
www.st.com 21
Contents STD8NM50N, STF8NM50N, STP8NM50N, STU8NM50N

Contents

1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Test circuits .............................................. 9

4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2/21 Doc ID 17413 Rev 3
STD8NM50N, STF8NM50N, STP8NM50N, STU8NM50N Electrical ratings

1 Electrical ratings

Table 2. Absolute maximum ratings
Value
Symbol Parameter Unit
DPAK, IPAK,
TO-220FP
TO-220

VGS Gate-source voltage