DC COMPONENTS 1N4937 [2/4] Number of cycles at 60 hz
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DC COMPONENTS 1N4937 [2/4] Number of cycles at 60 hz

DC COMPONENTS 1N4937 [2/4] Number of cycles at 60 hz
www.vishay.com For technical questions within your region, please contact one of the following: Document Number: 88508
2 DiodesAmericas@vishay.com
, DiodesAsia@vishay.com, DiodesEurope@vishay.com Revision: 27-Oct-09
1N4933 thru 1N4937
Vishay General Semiconductor
Note
(1)
Thermal resistance from junction to ambient and from junction to lead at 0.375" (9.5 mm) lead length, P.C.B. mounted
RATINGS AND CHARACTERISTICS CURVES
(T
A
= 25 °C unless otherwise noted)
Fig. 1 - Forward Current Derating Curves
Fig. 2 - Forward Power Loss Characteristics
Fig. 3 - Maximum Non-repetitive Peak Forward Surge Current
Fig. 4 - Typical Instantaneous Forward Characteristics
THERMAL CHARACTERISTICS (T
A
= 25 °C unless otherwise noted)
PARAMETER SYMBOL 1N4933 1N4934 1N4935 1N4936 1N4937 UNIT
Typical thermal resistance
R
θJA
(1)
55
°C/W
R
θJL
(1)
25
ORDERING INFORMATION (Example)
PREFERRED P/N UNIT WEIGHT (g) PREFERRED PACKAGE CODE BASE QUANTITY DELIVERY MODE
1N4933-E3/54 0.33 54 5500 13" diameter paper tape and reel
1N4933-E3/73 0.33 73 3000 Ammo pack packaging
Ambient Temperature (°C)
Average Forward Rectied Current (A)
0
25
50
75
100
125
150
175
0
0.2
0.4
0.6
0.8
1.0
0.375" (9.5 mm)
Lead Length
Capacitive
Loads
5.0
10
20
=
I
pk
I
AV
= π
I
pk
I
AV
0
0.2
0.4
0.6
0.8
1.0
1.2
0 0.2 0.4 0.6 0.8 1.0 1.2
Average Forward Current (A)
Average Power Loss (W)
D = t
p
/T t
p
T
D = 0.1
D = 0.2
D = 0.3
D = 0.5
D = 0.8
D = 1.0
Peak Forward Surge Current (A)
1
10
100
0
10
20
30
Number of Cycles at 60 Hz
1.0 Cycle
T
A
= 75 °C
8.3 ms Single Half Sine-Wave
Instantaneous Forward Voltage (V)
Instantaneous Forward Current (A)
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0.01
0.1
1
10
T
J
= 25 °C
Pulse Width = 300 μs
1 % Duty Cycle

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