©2004 Fairchild Semiconductor Corporation 1N4938, Rev. A
1N4938
Small Signal Diode
Absolute Maximum Ratings * T
A
= 25°C unless otherwise noted
* These ratings are limiting values above which the serviceability of the diode may be impaired.
NOTES:
1) These ratings are based on a maximum junction temperature of 200 degrees C.
2) These are steady limits. The factory should be consulted on applications involving pulsed or low duty cycle operations.
Thermal Characteristics
Electrical Characteristics T
A
=25°C unless otherwise noted
Symbol Parameter Value Units
V
RRM
Maximum Repetitive Reverse Voltage 200 V
I
F(AV)
Average Rectified Forward Current 500 mA
I
FSM
Non-repetitive Peak Forward Surge Current
Pulse Width = 1.0 second
Pulse Width = 1.0 microsecond
1.0
4.0
A
A
T
STG
Storage Temperature Range -65 to +200 °C
T
J
Operating Junction Temperature 175 °C
Symbol Parameter Value Units
P
D
Power Dissipation 500 mW
R
θJA
Thermal Resistance, Junction to Ambient 300 °C
Symbol Parameter Test Conditions Min. Max. Units
V
R
Breakdown Voltage I
R
= 100µA 200 V
V
F
Forward Voltage I
F
= 100mA 1.0 V
I
R
Reverse Leakage V
R
= 75V
V
R
= 175V, T
A
= 175°C
100
100
nA
µA
C
T
Total Capacitance V
R
= 0V, f = 1MHz 5 pF
t
rr
Reverse Recovery Time I
F
= 3mA, I
R
= 30mA
I
rr
= 1mA, R
L
= 100Ω
50 ns
1N4938
DO-35
Color Band Denotes Cathode