1N4148.1N4448
Vishay Telefunken
Rev. 2, 01-Apr-99 1 (4)
www.vishay.de FaxBack +1-408-970-5600
Document Number 85521
Silicon Epitaxial Planar Diodes
Features
D
Electrically equivalent diodes: 1N4148 – 1N914
1N4448 – 1N914B
Applications
Extreme fast switches 94 9367
Absolute Maximum Ratings
Tj = 25
_
CParameter Test Conditions Type Symbol Value Unit
Repetitive peak reverse voltage VRRM 100 V
Reverse voltage VR75 V
Peak forward surge current tp=1
m
s IFSM 2 A
Repetitive peak forward current IFRM 500 mA
Forward current IF300 mA
Average forward current VR=0 IFAV 150 mA
Power dissipation l=4mm, TL=45
°
C PV440 mW
l=4mm, TL
x
25
°
C PV500 mW
Junction temperature Tj200
°
C
Storage temperature range Tstg –65...+200
°
C
Maximum Thermal Resistance
Tj = 25
_
CParameter Test Conditions Symbol Value Unit
Junction ambient l=4mm, TL=constant RthJA 350 K/W
1N4148.1N4448
Vishay Telefunken
Rev. 2, 01-Apr-992 (4)
www.vishay.de FaxBack +1-408-970-5600 Document Number 85521
Electrical Characteristics
Tj = 25
_
C
Parameter Test Conditions Type Symbol Min Typ Max Unit
Forward voltage IF=5mA 1N4448 VF0.62 0.72 V
g
IF=10mA 1N4148 VF1 V
IF=100mA 1N4448 VF1 V
Reverse current VR=20 V IR25 nA
VR=20 V, Tj=150
°
C IR50
m
A
VR=75 V IR5
m
A
Breakdown voltage IR=100
m
A, tp/T=0.01,
tp=0.3ms V(BR) 100 V
Diode capacitance VR=0, f=1MHz, VHF=50mV CD4 pF
Rectification efficiency VHF=2V, f=100MHz
h
r45 %
Reverse recovery time IF=IR=10mA, iR=1mA trr 8 ns
y
IF=10mA, VR=6V,
iR=0.1xIR, RL=100
W
trr 4 ns
Characteristics (Tj = 25
_
C unless otherwise specified)
300 306090
0
0.2
0.4
0.6
0.8
1.2
V – Forward Voltage ( V )
F
Tj – Junction Temperature ( °C )
120
94 9169
1.0 IF=100mA
10mA
1mA
0.1mA
Figure 1. Forward Voltage vs. Junction Temperature
0 0.4 0.8 1.2 1.6
0.1
1
10
100
1000
I – Forward Current ( mA )
F
VF – Forward Voltage ( V )
2.0
94 9170
1 N 4148
Scattering Limit
Tj=25°C
Figure 2. Forward Current vs. Forward Voltage
1N4148.1N4448
Vishay Telefunken
Rev. 2, 01-Apr-99 3 (4)
www.vishay.de FaxBack +1-408-970-5600
Document Number 85521
0 0.4 0.8 1.2 1.6
0.1
1
10
100
1000
I – Forward Current ( mA )
F
VF – Forward Voltage ( V )
2.0
94 9171
1 N 4448
Scattering Limit
Tj=25°C
Figure 3. Forward Current vs. Forward Voltage
110
1
10
100
1000
I – Reverse Current ( nA )
R
VR – Reverse Voltage ( V )
100
94 9098
Scattering Limit
Tj=25°C
Figure 4. Reverse Current vs. Reverse Voltage
Dimensions in mm
Cathode Identification
1.7 max.
0.55 max.
3.9 max.26 min.
technical drawings
according to DIN
specifications
94 9366
Standard Glass Case
54 A 2 DIN 41880
JEDEC DO 35
Weight max. 0.3g 26 min.
1N4148.1N4448
Vishay Telefunken
Rev. 2, 01-Apr-994 (4)
www.vishay.de FaxBack +1-408-970-5600 Document Number 85521
Ozone Depleting Substances Policy Statement
It is the policy of V ishay Semiconductor GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating
systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known
as ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use
of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting
substances and do not contain such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
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unauthorized use.
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Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423