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What is SF31?

This electronic component, produced by the manufacturer "Leshan Radio Company", performs the same function as "SUPER FAST DIODES".


SF31 Datasheet PDF - Leshan Radio Company

Part Number SF31
Description SUPER FAST DIODES
Manufacturers Leshan Radio Company 
Logo Leshan Radio Company Logo 


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LESHAN RADIO COMPANY, LTD.
SF31 thru SF36
1.FEATURES
* Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
* High temperature metallurgically bonded construction
* Diffused junction
* Capable of meeting environmental standards
of MIL-S-19500
* For use in high frequency rectifier circuits
* Fast switching for high efficiency
* High temperature soldering guaranteed:
260°C/10 seconds
* 0.375" (9.5mm) lead length, 5 lbs. (2.3kg) tension
Super Fast Plastic Rectifiers
Reverse Voltage 50 to 400V
Forward Current 3.0A
2.Mechanical Data
Case: JEDEC DO-201AD, molded plastic
Terminals: Plated axial leads, solderable per
MIL-STD-750, Method 2026
Polarity: Color band denotes cathode end
Mounting Position: Any
Weight: 0.04 oz., 1.13 g
We declare that the material of product
compliance with RoHS requirements.
Handling precautin:None
3.Electrical Characteristic
Maximum Ratings & Thermal Characteristics Ratings at 25°C ambient temperature unless otherwise specified.
Parameter Symbol
symbol SF31 SF32 SF33 SF34 SF35 SF36 Unit
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
0.375" (9.5mm) lead length at TA = 55°C
Peak forward surge current 8.3ms single half
sine-wave superimposed on rated load (JEDEC
Method)
Typical thermal resistance (Note 2)
Maximum DC blocking voltage temperature
Operating junction temperature range
Storage temperature range
VRRM
VRMS
VDC
IF(AV)
IFSM
RθJA
TA
TJ
TSTG
50 100 150 200 300 400
35 70 105 140 210 280
50 100 150 200 300 400
3.0
V
V
V
A
150
20
150
–50 to +150
–50 to +150
A
°C/W
°C
°C
°C
Electrical Characteristics Ratings at 25°C ambient temperature unless otherwise specified.
Parameter Symbol
symbol SF31 SF32 SF33 SF34 SF35 SF36
Maximum instantaneous forward voltage at 3.0A
VF
0.95
1.25
Maximum DC reverse current TA = 25°C
at rated DC blocking voltage TA = 100°C
IR
10
200
Typical reverse recovery time (Note 1)
trr
35
Typical junction capacitance at 4.0V, 1MHz
CJ
190
NOTES:
1. IF = 0.5A, IR = 1.0A, IRR = 0.25A
2. Thermal resistance from junction to ambient at 0.375” (9.5mm) lead length, P.C.B. mounted
Unit
V
µA
ns
PF
1/3

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SF31 equivalent
2. 弹带盒装/Ammo Packing
A: 弹带盒规格/Ammo Box Spec.
LESHAN RADIO COMPANY, LTD.
Unit:mm
Item
Box's
Size
Symbol
L
W
H
L
W
H
Dimension
260±2
76±2
100±4
250±3
45±3
95±5
Notes
52mm
TYPE
26mm
TYPE
B:外箱规格/Outer Box Specification
H
W
L
Item
Case's
Size
Symbol
L
W
H
L
W
H
Dimension
430±2
280±2
225±4
435±3
280±3
295±5
Notes
52mm
TYPE
26mm
TYPE
按以上包装方式:(As per the above spec)
Q'ty/Taping
Q'ty/Packing Case
26mm/TYPE
Q'ty/Packing Case
52mm/TYPE
外型/Outside
A-405 & DO-41 & R-1
DO-15
3K 2K
30K 20K
60K 40K
DO-201AD
0.8K
7.2K
14.4K


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Part Details

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SF31 datasheet


1. 50V, Super Fast Rectifier Diode

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