Dated : 21/04/2004
SEMTECH ELECTRONICS LTD.
(Subsidiary of Semtech International Holdings Limited, acompany
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
SF21 THRU SF28
SUPER FAST RECTIFIERS
Reverse Voltage – 50 to 600 Volts
Forward Current – 2.0 Amperes
Features
• 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-15 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 SF21 SF22 SF23 SF24 SF25 SF26 SF28 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)
2.0
A
Peak Forward Surge Current ,
8.3mS Single Half Sine-Wave Superimposed
on Rated Load (JEDEC Method)
IFSM
50
A
Instantaneous Forward Voltage @ 2.0A
VF
0.95
1.25
V
DC Reverse Current
@ TA = 25
OC
at Rated DC Blocking Voltage
@ TA = 100
OC
IR
IR
5
50
uA
Reverse Recovery Time (Note 1)
Trr
35
nS
Typical Junction Capacitance (Note 2)
CJ
60
30
pF
Typical Thermal Resistance (Note 3)
RJA
50
℃
/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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