Dated : 21/04/2004
SEMTECH ELECTRONICS LTD.
(Subsidiary of Semtech International Holdings Limited, acompany
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
SF31 THRU SF38
SUPER FAST RECTIFIERS
Reverse Voltage – 50 to 600 Volts
Forward Current – 3.0 Amperes
Features
• The plastic package carries Underwriters Laboratory
Flammability Classification 94V-0
• Super fast switching for high efficiency
• Low reverse leakage
• High forward surge current capability
• High temperature soldering guaranteed:
250℃/10 seconds, 0.375” (9.5mm) lead length,
5 ibs, (2.3kg) tension
Mechanical Data
• Case: JEDEC DO-201AD molded plastic body
• Terminals: Plated axial leads, solderable per MIL-STD-750, Method 2026
• Polarity: Color band denotes cathode end
• Mounting Position: Any
Absolute Maximum Ratings and Characteristics
Rating at 25oC ambient temperature unless otherwise specified. Single-phase, half wave, 60Hz, resistive or
inductive load. For capacitive load, derate current by 20%.
Symbols SF31 SF32 SF33 SF34 SF35 SF36
SF38 Units
Repetitive Peak Reverse Voltage
VRRM
50
100
150
200
300
400
600
V
RMS Voltage
VRMS
35
70
105
140
210
280
420
V
DC Blocking Voltage
VDC
50
100
150
200
300
400
600
V
Average Forward Rectified Current 0.375”(9.5mm)
Lead Length at TA = 55
OC
I(AV)
3.0
A
Peak Forward Surge Current ,
8.3mS Single Half Sine-Wave Superimposed
on Rated Load (JEDEC Method)
IFSM
125
A
Instantaneous Forward Voltage @ 3.0A
VF
0.95
1.25
V
DC Reverse Current
@ TA = 25
OC
at Rated DC Blocking Voltage
@ TA = 100
OC
IR
IR
10
50
uA
uA
Reverse Recovery Time (Note 1)
Trr
35
nS
Typical Junction Capacitance (Note 2)
CJ
100
50
pF
Typical Thermal Resistance (Note 3)
RJA
30
℃
/W
Operating Junction Temperature Range
TJ
-65 to +150
℃
Storage Temperature Range
TS
-65 to +150
℃
Note: (1) Reverse recovery test conditions: IF = 0.5A, IR = 1A, IRR = 0.25A.
(2) Measured at 1 MHz and applied reverse voltage of 4 Volts D.C
(3) Thermal resistance from junction to ambient at 0.375” (9.5mm) lead length, P. C. B. mounted
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