Diode Semiconductor Korea
31DF3 --- 31DF4
SUPER FAST RECTIFIERS
FEATURES
Low cost
Diffused junction
Low leakage
Low forward voltage drop
High current capability
Eas ily cleaned with alcohol,Is opropanol and
sim ilar solvents
MECHANICAL DATA
Case:JEDEC DO--27,m olded plastic
Terminals: Axial lead ,solderable per
MIL-STD-202,Method 208
Polarity: Color band denotes cathode
Weight: 0.041ounces,1.15 gram s
Mounting position: Any
VOLTAGE RANGE: 300 --- 400 V
CURRENT: 1.5 A
DO - 27
Dimensions in millimeters
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 am bient tem perature unless otherwise specified.
Single phas e,half wave,50Hz,res is tive or inductive load. For capacitive load,derate by 20%.
Maximum recurrent peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forw ard rectified current
9.5mm lead length,
@TA=75
Peak forw ard surge current
VRRM
VRMS
VDC
IF(AV)
8.3ms single half-sine-w ave
IFSM
superimposed on rated load @TJ=125
Maximum instantaneous forw ard voltage
@ IF=3A
VF
Maximum reverse current
@TA=25
IR
at rated DC blocking voltage @TA=100
Maximum reverse recovery time (Note1)
trr
Typical junction capacitance
(Note2)
CJ
Typical thermal resistance
(Note3)
RθJA
Operating junction temperature range
TJ
Storage temperature range
TSTG
NOTE: 1. Measured with IF=0.5A, IR=1A, Irr=0.25A.
2. Measured at 1.0MHZ and applied rev erse v oltage of 4.0V DC.
3. Thermal resistance f rom junction to ambient.
31DF3
31DF4
300
400
210
280
300
400
1.5
125.0
1.25
5.0
50.0
30
90
34
- 55 ----- + 150
- 55 ----- + 150
UNITS
V
V
V
A
A
V
A
ns
pF
/W
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