1N4148W, 1N4148WS
SMALL SIGNAL DIODES
FEATURES
Silicon Epitaxial Planar Diode
Fast switching diodes.
This diode is also available in other case styles including:
the DO-35 case with the type designation 1N4148, the
Mini-MELF case with the type designation LL4148, and
the SOT-23 case with the type designation IMBD4148.
MECHANICAL DATA
1N4148W
Case: SOD-123 Plastic Case
Weight: approx. 0.01 g
Marking Code: A2
1N4148WS
Case: SOD-323 Plastic Case
Weight: approx. 0.004 g
Marking Code: A2
MAXIMUM RATINGS
Ratings at 25C ambient temperature unless otherwise specified.
SYMBOL
VALUE
UNIT
Reverse Voltage
V
R
75
Volts
Peak Reverse Voltage
V
RM
100
Volts
Rectified Current (Average)
Half Wave Rectification with Resist. Load
I
o
150
(1)
mA
at T
amb
= 25 C and f
50 H
Z
Surge Forward Current at t < 1 s and T
j
= 25 C
1N4148W
I
FSM
500
mA
1N4148WS
350
mA
Power Dissipation at T
amb
= 25 C
1N4148W
P
tot
400
(1)
mW
1N4148WS
200
(1)
mW
Junction Temperature
T
j
150
C
Storage Temperature Range
T
S
65 to +150
C
NOTES:
(1) Valid provided that electrodes are kept at ambient temperature
12/22/98
.022 (0.55)
m
a
x
.
.
004 (0.
1)
.
112 (2.
85)
.
152 (3.
85)
.067 (1.70)
m
a
x
.
.
053 (1.
35)
min. .010 (0.25)
Cathode Mark
m
a
x
.
.
006 (0.
15)
Top View
.
140 (3.
55)
.
100 (2.
55)
.055 (1.40)
m
a
x
.
.
006 (0.
15)
min. .010 (0.25)
.012 (0.3)
.
076 (1.95)
.
112 (2.85)
.059 (1.5)
m
a
x
.
.0
0
4
(0
.1
)
m
a
x
.
.
049 (1.
25)
Cathode Mark
Top View
.
100 (2.55)
.
0
65 (
1
.
65)
.043 (1.1)
SOD-123
(1N4148W)
SOD-323
(1N4148WS)
Dimensions in inches and (millimeters)
1N4148W, 1N4148WS
ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified
SYMBOL
MIN.
TYP.
MAX.
UNIT
Forward Voltage at I
F
=10 mA
V
F
1.0
Volts
Leakage Current
at V
R
= 20 V
I
R
25
nA
at V
R
= 75 V
I
R
5.0
mA
at V
R
= 20 V, T
j
= 150 C
I
R
50
mA
Capacitance
at V
F
= V
R
= 0 V
C
tot
4
pF
Voltage Rise when Switching On
tested with 50 mA Pulses
V
fr
2.5
Volts
t
p
= 0.1
ms, Rise Time < 30ns, f
p
= 5 to 100 kH
Z
Reverse Recovery Time
from I
F
= 10 mA to I
R
= 1mA,
t
rr
4
ns
V
R
= 6 V, R
L
= 100
W
Thermal Resistance Junction to Ambient Air
1N4148W
R
thJA
450
(2)
C/W
1N4148WS
R
thJA
650
(2)
C/W
Rectification Efficiency
h
v
0.45
at f = 100 MH
Z
, V
RF
= 2 V
NOTES::
(2) Valid provided that electrodes are kept at ambient temperature
Rectification Efficiency Measurement Circuit
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