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1N4937
Axial- lead, fast- recovery rectifiers are designed for special
applications such as dc power supplies, inverters, converters,
ultrasonic systems, choppers, low RF interference and free wheeling
diodes. A complete line of fast recovery rectifiers having typical
recovery time of 150 nanoseconds providing high efficiency at
frequencies to 250 kHz.
Mechanical Characteristics
·
Case: Epoxy, Molded
·
Weight: 0.4 gram (approximately)
·
Finish: All External Surfaces Corrosion Resistant and Terminal
Leads are Readily Solderable
·
Lead and Mounting Surface Temperature for Soldering Purposes:
220
°
C Max. for 10 Seconds, 1/16
from case
·
Shipped in plastic bags, 1000 per bag.
·
Available Tape and Reeled, 5000 per reel, by adding a "RL" suffix to
the part number
·
Polarity: Cathode Indicated by Polarity Band
·
Marking: 1N4937
FAST RECOVERY
RECTIFIER
1.0 AMPERE
600 VOLTS
Axial-Lead Fast-Recovery Rectifier
http://onsemi.com
2
MAXIMUM RATINGS
(Note 1)
Rating
Symbol
1N4937
Unit
*Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
600
Volts
*Non-Repetitive Peak Reverse Voltage
RMS Reverse Voltage
V
RSM
V
R(RMS)
650
420
Volts
*Average Rectified Forward Current
(Single phase, resistive load, T
A
= 75
°
C) (Note 2)
I
O
1.0
Amp
*Non-Repetitive Peak Surge Current
(Surge applied at rated load conditions)
I
FSM
30
Amps
Operating Junction Temperature Range
Storage Temperature Range
T
J
T
stg
- 65 to +150
- 65 to +150
°
C
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
Thermal Resistance, Junction to Ambient
(Typical Printed Circuit Board Mounting)
R
JC
65
°
C/W
ELECTRICAL CHARACTERISTICS
Characteristic
Symbol
Min
Typ
Max
Unit
Instantaneous Forward Voltage
(I
F
= 3.14 Amp, T
J
= 125
°
C)
v
F
-
1.0
1.2
Volts
Forward Voltage
(I
F
= 1.0 Amp, T
A
= 25
°
C)
V
F
-
1.0
1.1
Volts
*Reverse Current (Rated dc Voltage)
T
A
= 25
°
C
T
A
= 100
°
C
I
R
-
-
1.0
50
5.0
100
µ
A
*REVERSE RECOVERY CHARACTERISTICS
Characteristic
Symbol
Min
Typ
Max
Unit
Reverse Recovery Time
(I
F
= 1.0 Amp to V
R
= 30 Vdc)
(I
FM
= 15 Amp, di/dt = 10 A/
µ
s)
t
rr
-
-
150
175
200
300
ns
Reverse Recovery Current
(I
F
= 1.0 Amp to V
R
= 30 Vdc)
I
RM(REC)
-
1.0
2.0
Amp
1. Ratings at 25
°
C ambient temperature unless otherwise specified.
2. Derate by 20% for capacitive loads.
*Indicates JEDEC Registered Data for 1N4933 Series.
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1N4937
http://onsemi.com
3
PACKAGE DIMENSIONS
AXIAL LEAD
B
D
K
K
F
F
A
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
4.10
5.20
0.161
0.205
B
2.00
2.70
0.079
0.106
D
0.71
0.86
0.028
0.034
F
---
1.27
---
0.050
K
25.40
---
1.000
---
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. 59-04 OBSOLETE, NEW STANDARD 59-09.
4. 59-03 OBSOLETE, NEW STANDARD 59-10.
5. ALL RULES AND NOTES ASSOCIATED WITH
JEDEC DO-41 OUTLINE SHALL APPLY
6. POLARITY DENOTED BY CATHODE BAND.
7. LEAD DIAMETER NOT CONTROLLED WITHIN F
DIMENSION.
1N4937
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