GLASS PASSIVATED SUPER FAST RECTIFIER
VOLTAGE RANGE 50 to 200 Volts CURRENT 2.0 Amperes
RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICA TION
FEATURES
* High reliability
* Low leakage
* Low forward voltage
* High current capability
* Super fast switching speed
* High surge capability
* Good for switching mode circuit
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 oC ambient temperature unless otherwis e specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
ELECTRICAL CHARACTERISTICS
(At TA = 25oC unless otherwise noted)
USF21
THRU
USF24
DO-15
MAXIMUM RATINGS
(At TA = 25oC unless otherwise noted)
NOTES : 1. Test Conditions: IF=0.5A, IR=-1.0A, IRR=-0.25A.
2. Measured at 1 MH
Z
and applied reverse voltage of 4.0 volts.
Dimensions in inches and (millimeters)
MECHANICAL DATA
* Case: Molded plastic
* Epoxy: Device has U L flammability classification 94V-O
* Lead: MIL-STD-202E method 208C guaranteed
* Mounting position: Any
* Weight: 0.38 gram
2002-4
at Rated DC Blocking Voltage
CHARACTERISTICS
Maximum Reverse Recovery Time (Note 1)
V
F
SYMBOL
I
R
trr
UNITS
0.90
10 uAmps
nSec
Maximum DC Reverse Current
Maximum Forward Voltage at 2.0A DC Volts
@T
A
= 25
o
C
@T
A
=100
o
C
SF21 SF24SF22 SF23
350
20
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Volts
Maximum DC Blocking Voltage
Maximum Average Forward Current
T
A
= 55
o
C
Peak Forward Surge Current I
FM
(surge):8.3 ms single half
sine-wave superimposed on rated load (JEDEC method)
Typical Junction Capacitance (Note 2)
Operating and Storage Temperature Range
SYMBOL
V
RRM
V
DC
I
O
I
FSM
C
J
T
J
, T
STG
V
RMS
Volts
Volts
Volts
Amps2.0
75
15
-55 to + 150
Amps
pF
0
C
UNITS
SF21 SF24
SF22 SF23
50 200
100 150
35 14070 105
50 200100 150
1.0 (25.4)
MIN.
.230 (5.8)
.300 (7.6)
1.0 (25.4)
MIN.
.140 (3.6)
.104 (2.6)DIA.
.034 (0.9)
.028 (0.7)DIA.
RECTRON
RATING AND CHARACTERISTIC CURVES ( USF21 THRU USF24 )
FIG. 6 - TYPICAL JUNCTION CAPACITANCE
JUNCTION CAPACITANCE, (pF)
REVERSE VOLTAGE, ( V )
200
100
60
40
20
10
6
4
2
1.1 .2 .4 1.0 2 4 10 20 40 100
TJ = 25
FIG. 1 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
50
NONINDUCTIVE 10
NONINDUCTIVE
D.U.T
25 Vdc
(approx)
( - )
( - )
( + )
( + )
1
NON-
INDUCTIVE
OSCILLOSCOPE
(NOTE 1)
PULSE
GENERATOR
(NOTE 2)
NOTES:
1 Rise Time = 7ns max. Input Impedance =
1 megohm. 22pF.
2. Rise Time = 10ns max. Source Impedance =
50 ohms.
trr
+0.5A
0
-0.25A
-1.0A 1cm
SET TIME BASE FOR
10 ns/cm
FIG. 2 - TYPICAL FORWARD
CURRENT DERATING CURVE
AVERAGE FORWARD CURENT, (A)
AMBIENT TEMPERATURE ( )
3.0
2.0
1.0
0 25 50 75 100125150175
0
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
FIG. 3 - TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS REVERSE CURRENT, (uA)
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
TJ = 25
TJ = 100
TJ = 150
100
10
1.0
.1
.01 400 20 60 80 100 120 140
FIG. 5 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT
PEAK FORWARD SURGE CURRENT, (A)
NUMBER OF CYCLES AT 60Hz
105
90
75
60
45
30
15
01 2 5 10 20 50 100
8.3ms Single Half Sine-Wave
(JEDEC Method)
INSTANTANEOUS FORWARD VOLTAGE, (V)
FIG. 4 - TYPICAL INSTANTANEOUS FORWARD
INSTANTANEOUS FORWARD CURRENT, (A)
0 .2 .4 .6 .8 1.0 1.2 1.4
.01
.1
1
10
100
Pulse Width = 300uS
1% Duty Cycle
TJ = 25
CHARACTERISTICS
