1N4148.1N4448
Vishay Telefunken
Silicon Epitaxial Planar Diodes
Features
D Electrically equivalent diodes: 1N4148 – 1N914
1N4448 – 1N914B
Applications
94 9367
Extreme fast switches
Absolute Maximum Ratings
Tj = 25_C
Parameter
Repetitive peak reverse voltage
Reverse voltage
Peak forward surge current
Repetitive peak forward current
Forward current
Average forward current
Power dissipation
Junction temperature
Storage temperature range
Test Conditions
tp=1ms
VR=0
l=4mm, TL=45°C
l=4mm, TL 25°C
x
Type
Symbol
VRRM
VR
IFSM
IFRM
IF
IFAV
PV
PV
Tj
Tstg
Value
100
75
2
500
300
150
440
500
200
–65...+200
Unit
V
V
A
mA
mA
mA
mW
mW
°C
°C
Maximum Thermal Resistance
Tj = 25_C
Parameter
Junction ambient
Document Number 85521
Rev. 2, 01-Apr-99
Test Conditions
l=4mm, TL=constant
Symbol
RthJA
Value
350
Unit
K/W
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1N4148.1N4448
Vishay Telefunken
Electrical Characteristics
Tj = 25_C
Parameter
Forward voltage
g
Test Conditions
IF=5mA
IF=10mA
IF=100mA
VR=20 V
VR=20 V, Tj=150 °C
VR=75 V
IR=100mA, tp/T=0.01,
tp=0.3ms
VR=0, f=1MHz, VHF=50mV
VHF=2V, f=100MHz
IF=IR=10mA, iR=1mA
IF=10mA, VR=6V,
iR=0.1xIR, RL=100W
Reverse current
Breakdown voltage
Diode capacitance
Rectification efficiency
Reverse recovery
y time
Type
1N4448
1N4148
1N4448
Symbol
VF
VF
VF
IR
IR
IR
V(BR)
Min
0.62
Typ
Max
0.72
1
1
25
50
5
Unit
V
V
V
nA
mA
mA
V
4
pF
%
ns
ns
100
CD
hr
45
trr
trr
8
4
Characteristics (Tj = 25_C unless otherwise specified)
1000
1.0
IF = 100 mA
0.8
10 mA
0.6
1 mA
0.4
0.1 mA
IF – Forward Current ( mA )
VF – Forward Voltage ( V )
1.2
1 N 4148
100
Scattering Limit
10
1
0.2
0
–30
94 9169
Tj = 25°C
0.1
0
30
60
90
120
Tj – Junction Temperature ( °C )
Figure 1. Forward Voltage vs. Junction Temperature
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0
94 9170
0.4
0.8
1.2
1.6
2.0
VF – Forward Voltage ( V )
Figure 2. Forward Current vs. Forward Voltage
Document Number 85521
Rev. 2, 01-Apr-99
1N4148.1N4448
Vishay Telefunken
1000
1 N 4448
IR – Reverse Current ( nA )
IF – Forward Current ( mA )
1000
100
Scattering Limit
10
1
Tj = 25°C
100
Tj = 25°C
0.1
0
0.4
94 9171
0.8
1.2
1.6
Scattering Limit
10
1
2.0
VF – Forward Voltage ( V )
1
Figure 3. Forward Current vs. Forward Voltage
100
10
VR – Reverse Voltage ( V )
94 9098
Figure 4. Reverse Current vs. Reverse Voltage
Dimensions in mm
Cathode Identification
∅ 0.55 max.
technical drawings
according to DIN
specifications
94 9366
∅ 1.7 max.
Standard Glass Case
54 A 2 DIN 41880
JEDEC DO 35
Weight max. 0.3 g
Document Number 85521
Rev. 2, 01-Apr-99
26 min.
3.9 max.
26 min.
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1N4148.1N4448
Vishay Telefunken
Ozone Depleting Substances Policy Statement
It is the policy of Vishay 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
application by the customer. Should the buyer use Vishay-Telefunken products for any unintended or unauthorized
application, the buyer shall indemnify Vishay-Telefunken against all claims, costs, damages, and expenses, arising out
of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423
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Document Number 85521
Rev. 2, 01-Apr-99