DESIGN DATA
Case: Hermetically sealed glass package per MIL-
PRF-19500/169 DO-213AA outline
Lead Material: Copper clad steel
Lead Finish: Tin/Lead
Thermal Resistance (RθJEC): 50°C/W maximum
Thermal Impedance (ZθJX): 70°C/W maximum
Polarity: Cathode end is banded.
MAXIMUM RATINGS AT 25 °C
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
Surge Current A, sine, 1uS: 2.0A
Surge Current B, sine, 1S: 0.5A
Total Power Dissipation: 500mW
Operating Current: 100mA, TA= +25°C
Derating Factor: 0.667mA/°C above TA= +25°C
D.C. Reverse Voltage (VRWM): 175V
FEATURES
• 1N4938UR-1 AVAILABLE IN JAN, JANTX, AND JANTXV PER MIL-PRF-
19500/169
• SWITCHING DIODE
• METALLURGICALLY BONDED
• HERMETICALLY SEALED
• DOUBLE PLUG CONSTRUCTION
•
A
LSO
A
VAILABLE
A
S
LL4938, & MLL4938
DC ELECTRICAL CHARACTERISTICS
VFIRVBR
Ambient
(°C) IF
mA Min
V Max
V Ambient
(°C)
V (dc) Min
µA Max
µA Ambient
(°C) IR
µA Min
V Max
V
25 100 - 1.0 25 175 - 0.1 25 100 200 -
-55 100 - 1.2 150 175 - 100
AC ELECTRICAL CHARACTERISTI CS AT 25°C
Symbol Min Max
Capacitance @ 0V pF - 5
TRR @ IF =IR=30mA,
IRec = 3mA. nsec - 50
IRELAND - GORT ROAD, ENNIS, CO. CLARE
PHONE: +353 65 6840044
TOLL FREE: +186 62 702434
FAX: +353 65 6822298
U.S.A. DOMESTIC SALES CONTACT
PHONE: (617) 926 0404
TOLL FREE: 1 800 666 2999
WWW.MICROSEMI.COM
1N4938UR-1
