Major Ratings and Characteristics
I
F(AV)
Rectangular 240 A
waveform
V
RRM
range 135 to 150 V
I
FSM
@ tp = 5 µs sine 20000 A
V
F
@

240Apk, T
J
=125°C 0.72 V
T
J
range - 55 to 175 °C
Characteristics 249NQ...(R) Units
Description/ Features
The 249NQ...(R) high current Schottky rectifier module series
has been optimized for low reverse leakage at high tempera-
ture. The proprietary barrier technology allows for reliable
operation up to 175° C junction temperature. Typical applica-
tions are in switching power supplies, converters, free-
wheeling diodes, and reverse battery protection.
175° C T
J
operation
Unique high power, Half-Pak module
Replaces four parallel DO-5's
Easier to mount and lower profile than DO-5's
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
SCHOTTKY RECTIFIER 240 Amp
249NQ...(R) SERIES
Bulletin PD-20721 rev. A 06/02
1www.irf.com
D-67
Outline D-67 HALF PAK Module
Dimensions in millimeters and (inches)
249NQ150
Lug Terminal Anode
Base Cathode
249NQ150R
Lug Terminal Cathode
Base Anode