MILLIMETERS INCHES
DIM MIN MAX MIN MAX
D 1.60 1.70 0.063 0.067
F 0.41 0.55 0.016 0.022
G 3.30 3.70 .130 .146
G1 2.54 REF. .100 REF.
S 0.03 MIN. .001 MIN.
22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071 FAX (781) 665-7379
WEBSITE: http://www.cdi-diodes.com E-mail: mail@cdi-diodes.com
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified
MAXIMUM RATINGS
Operating Temperature: -65°C to +200°C
Storage Temperature: -65°C to +200°C
Operating Current: 200 mA @ TA= + 25°C
Derating Factor: 1.14 mA/°C Above TA= + 25°C
Surge Current A: 2A, sine wave, Pw= 8.3ms
Surge Current B: 1.41A, square wave, Pw= 8.3ms
• 1N4148UR-1 AVAILABLE IN JAN, JANTX, AND JANTXV
PER MIL-PRF-19500/116
• SWITCHING DIODE
• HERMETICALLY SEALED
• METALLURGICALLY BONDED
• DOUBLE PLUG CONSTRUCTION
FIGURE 1
DESIGN DATA
CASE: DO-213AA, Hermetically sealed
glass case. (MELF, SOD-80, LL34)
LEAD FINISH: Tin / Lead
THERMAL RESISTANCE (ROJEC):
100 °C/W maximum AT L = 0
THERMAL IMPEDANCE: (ZOJX): 70
˚C/W maximum
POLARITY: Cathode end is banded.
MOUNTING SURFACE SELECTION:
The Axial Coefficient of Expansion
(COE) Of this Device is Approximately
+6PPM/°C. The COE of the Mounting
Surface System Should Be Selected To
Provide A Suitable Match With This
Device.
1N4148UR-1
and
CDLL4148
I R1 I R2 I R3 I R4 CAPACITANCE CAPACITANCE
@ 20 V dc @ 75 V dc @ 20 V @ 75 V @ 0 V @ 1.5 V
TA= 150°C TA= 150°C
nA µA µA µA pF pF
25 0.5 35 75 4.0 2.8
Vf 1 Vf 2 t rr
VBR V RWM I0@
I F = 10 mA @I F = 100 mA (Note 1)
@100
µ
A
Volts Volts (pk) mA V dc V dc n sec
100 75 200 0.8 1.2 5
IN4148UR-1 and CDLL4148
.3 .4 .5 .6 .7 .8 .9 1.0 1.1 1.2 1.3
VF - Forward Voltage (V)
FIGURE 2
Typical Forward Current
vs Forward Voltage
IF- Forward Current - (mA)
1000
100
10
1
0.1
150ºC
100ºC
25ºC
-65ºC
20 40 60 80 100 120 140
Percent of Reverse Working Voltage (%)
FIGURE 3
Typical Reverse Current
vs Reverse Voltage
IR- Reverse Current - (µA)
1000
100
10
1
0.1
.01
.001
150ºC
100ºC
25ºC
-65ºC
NOTE : All temperatures shown on graphs are
junction temperatures
