Frontier Electronics Corp.
667 E. COCHRAN STREET, SIMI VALLEY, CA 93065
TEL: (805) 522-9998
FAX: (805) 522-9989
E-mail:
frontiersales@frontierusa.com
Web:
http://www.frontierusa.com
1A FAST RECOVERY PLASTIC RECTIFIER
1N4933-LFR THRU 1N4937-LFR
FEATURES
LOW COST
PLASTIC PACKAGE HAS UNDERWRITERS LABORATORY
FLAMMABILITY CLASSIFICATION 94V-0
1 AMPERE OPERATION AT TA=55°C WITH NO THERMAL
RUNAWAY
FAST SWITCHING FOR HIGH EFFICIENCY
EXCEEDS ENVIRONMENTAL STANDARDS OF MIL-STD-19500
HIGH TEMPERATURE SOLDERING GUARANTEED: 250°C /
10S/0.375” (9.5mm) LEAD LENGTH /5 LBS (2.3KG) TENSION
ROHS
MECHANICAL DATA
CASE: JEDEC DO-41, MOLDED CASE, DIMENSIONS IN INCHES AND (MILLIMETERS)
TERMINAL: AXIAL LEADS, SOLDERABLE PER MIL-STD-202,
METHOD 208
POLARITY: COLOR BAND DENOTES CATHODE
MOUNTING POSITION: ANY
WEIGHT: 0.34 GRAMS
1.0(25.4)
MIN
.034(0.9)
.028(0.7)
.205(5.2)
.166(4.2)
.107(2.7)
.080(2.0)
1.0(25.4)
MIN
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS RATINGS AT 25°C AMBIENT TEMPERATURE UNLESS OTHERWISE SPECIFIED
SINGLE PHASE, HALF WAVE, 60 HZ, RESISTIVE OR INDUCTIVE LOAD. FOR CAPACITIVE LOAD, DERATE CURRENT BY 20%
1N4933-LF 1N4934-LF 1N4935-LF 1N4936-LF 1N4937-LF
UNITS
RATINGS
SYMBOL
R
R
R
R
R
MAXIMUM RECURRENT PEAK REVERSE VOLTAGE
V
RRM
50
100
200
400
600
V
MAXIMUM RMS VOLTAGE
V
RMS
35
70
140
280
420
V
MAXIMUM DC BLOCKING VOLTAGE
V
DC
50
100
200
400
600
V
MAXIMUM AVERAGE FORWARD RECTIFIED CURRENT
I
O
1.0
A
0.375”(9.5mm) LEAD LENGTH AT TA=55°C
PEAK FORWARD SURGE CURRENT, 8.3ms SINGLE HALF
I
FSM
30
A
SINE-WAVE SUPERIMPOSED ON RATED LOAD
TYPICAL JUNCTION CAPACITANCE (NOTE 1)
C
J
15
PF
TYPICAL THERMAL RESISTANCE (NOTE 2)
STORAGE TEMPERATURE RANGE
OPERATING TEMPERATURE RANGE
R
θja
T
STG
T
OP
50
- 55 TO + 150
- 55 TO + 150
℃/W
℃
℃
ELECTRICAL CHARACTERISTICS (A
T
T
A
=25°C UNLESS OTHERWISE NOTED)
1N4933-LF 1N4934-LF 1N4935-LF 1N4936-LF 1N4937-LF
CHARACTERISTICS
SYMBOL
R
R
R
R
R
MAXIMUM FORWARD VOLTAGE AT I
O
DC
V
F
1.2
MAXIMUM REVERSE CURRENT AT 25℃
MAXIMUM REVERSE CURRENT AT 100℃
I
R
I
R
5
50
UNITS
V
μA
μA
nS
MAXIMUM REVERSE RECOVERY TIME (NOTE 2)
T
RR
120
NOTE: 1. MEASURED AT 1 MHZ AND APPLIED REVERSE VOLTAGE 0F 4.0 VOLTS
2. BOTH LEADS ATTACHED TO HEAT SINK 20x20x1t(mm) COPPER PLATE AT LEAD LENGTH 5mm
3. REVERSE RECOVERY TEST CONDITIONS: I
F
=0.5A, I
R
=1.0A, I
RR
=0.25A
1N4933-LFR THRU 1N4937-LFR
Page: 1
RATINGS AND CHARACTERISTIC CURVE 1N4933-LFR THRU 1N4937-LFR
FIG. 1-TEST CIRCUIT DIAGRAM AND REVERSE
RECOVERY TIME CHARACTERISTIC
50Ω
NO INDUCTIVE
10Ω
NO INDUCTIVE
Trr
(-)
D.U.T.
(+)
25 V
dc
(approx)
PULSE
GENERATOR
( NOTE 2 )
1Ω
NON
INDUCTIVE
OSCILLOSCOPE
( NOTE 1 )
+0.5A
0
-0.25A
(-)
(+)
-1.0A
NOTE: 1. RISE TIME=7ns MAX. INPUT
IMPEDANCE=1 MOhms 22PF
2. RISE TIME =10ns MAX. SOURCE
IMPEDANCE=50 OHMS
Fig. 2-MAXIMUM CURRENT DERATING CURVE
RESISTIVE OR
INDUCTIVE LOAD
0.375”(9.5mm)
LEAD LENGTH
1cm
SET TIME BASE
FOR 10/20 ns/cm
Io-AVERAGE RECTIFIED
CURRENT (A)
1.0
0.8
0.6
0.4
0.2
0
0
CAPACITIVE
LOAD
I(pk)
I(AV)
=
π
PEAK FORWARD SURGE CURRENT
AMPERES
Fig. 5-MAXIMUM FORWARD SURGE
NUMBER OF CYCLES
I(pk)
I(
AV
)
5
= 10
20
60 80 100 120 140 160 180 200
30
20
T
A
=75
o
C
8.3ms SINGLE HALF
SINE-WAVE JEDEC METHOD
20 40
T
A
-AMBIENT TEMPERATURE (
O
C)
10
1.0 CYCLE
FIG. 3-TYPICAL JUNCTION CAPACITANCE
20
Tj=25
o
C
0
1
10
NUMBER OF CYCLES AT 60 HZ
CAPACITANCE, pF
10
100
1
1
f = 1 MHz
Vsig = 50 mVp-p
FIG. 6-TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
10
REVERSE VOLTAGE, VOLTS
100
INSTANTANEOUS FORWARD
CURRENT, I
F
(A)
10
FIG. 4-TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS REVERSE
CURRENT, MICRO AMPERES(uA)
100
10
T
J
=100
o
C
1.0
0.1
1.0
0.1
.01
0
20
40
60
80
100 120 140
PERCENT OF RATED PEAK REVERSE VOLTAGE
Tj=25
o
C
PULSE WIDTH =300us
1% DUTY CYCLE
T
J
=25
o
C
.01
.4
.6
.8
1.0
1.2
1.4 1.6
INSTANTANEOUS FORWARD VOLTAGE, (V)
1N4933-LFR THRU 1N4937-LFR
Page: 2
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