1N4148 / 1N4448
FAST SWITCHING DIODE
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Features
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Mechanical Data
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Fast Switching Speed
General Purpose Rectification
Silicon Epitaxial Planar Construction
Lead Free Finish, RoHS Compliant (Note 2)
Case: DO-35
Case Material: Glass
Moisture Sensitivity: Level 1 per J-STD-020D
Leads: Solderable per MIL-STD-202, Method 208
Terminals: Finish ⎯ Sn96.5Ag3.5. Solderable per MIL-STD202, Method 208
Polarity: Cathode Band
Marking: Type Number
Ordering Information: See Page 2
Weight: 0.13 grams (approximate)
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Maximum Ratings
@TA = 25°C unless otherwise specified
Characteristic
Non-Repetitive Peak Reverse Voltage
Symbol
VRM
VRRM
VRWM
VR
VR(RMS)
IFM
IO
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
RMS Reverse Voltage
Forward Continuous Current (Note 1)
Average Rectified Output Current (Note 1)
Non-Repetitive Peak Forward Surge Current
@ t = 1.0s
@ t = 1.0μs
1N4148
100
1N4448
Unit
V
75
V
53
300
500
150
1.0
2.0
IFSM
V
mA
mA
A
Thermal Characteristics
Characteristic
Power Dissipation (Note 1)
Derate Above 25°C
Thermal Resistance, Junction to Ambient Air (Note 1)
Operating and Storage Temperature Range
Electrical Characteristics
Characteristic
Maximum Forward Voltage
Symbol
Value
500
1.68
300
-65 to +175
PD
RθJA
TJ , TSTG
@TA = 25°C unless otherwise specified
Symbol
1N4148
1N4448
1N4448
VFM
Min
⎯
0.62
⎯
Max
1.0
0.72
1.0
Unit
V
Maximum Peak Reverse Current
IRM
⎯
5.0
50
30
25
Total Capacitance
CT
⎯
4.0
μA
μA
μA
nA
pF
Reverse Recovery Time
trr
⎯
4.0
ns
Notes:
Unit
mW
mW/°C
°C/W
°C
Test Condition
IF = 10mA
IF = 5.0mA
IF = 100mA
VR = 75V
VR = 70V, TJ = 150°C
VR = 20V, TJ = 150°C
VR = 20V
VR = 0, f = 1.0MHz
IF = 10mA to IR =1.0mA
VR = 6.0V, RL = 100Ω
1. Valid provided that device terminals are kept at ambient temperature.
2. EC Directive 2002/95/EC (RoHS) revision 13.2.2003. Glass and high temperature solder exemptions applied where applicable,
see EU Directive Annex Notes 5 and 7.
1N4148 / 1N4448
Document number: DS12019 Rev. 7 - 2
1 of 2
www.diodes.com
March 2008
© Diodes Incorporated
1N4148 / 1N4448
10,000
100
IR, LEAKAGE CURRENT (nA)
IF, INSTANTANEOUS FORWARD CURRENT (mA)
1,000
10
1.0
0.1
100
10
VR = 20V
0.01
0
1
0
0.4
0.8
1.2
1.6
2.0
VF, INSTANTANEOUS FORWARD VOLTAGE (V)
Fig. 1 Typical Forward Characteristics
Ordering Information
100
200
TJ, JUNCTION TEMPERATURE (°C)
Fig. 2 Leakage Current vs. Junction Temperature
(Note 3)
Part Number
1N4148-A
1N4148-T
1N4448-A
1N4448-T
Notes:
1,000
Case
DO-35
DO-35
DO-35
DO-35
Packaging
10K/Ammo Pack
10K/Tape & Reel, 13-inch
10K/Ammo Pack
10K/Tape & Reel, 13-inch
3. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Package Outline Dimensions
Dim
A
B
C
D
DO-35
Min
25.40
⎯
⎯
⎯
All Dimensions in mm
Max
⎯
4.00
0.60
2.00
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product
described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall
assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website,
harmless against all damages.
LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written
approval of the President of Diodes Incorporated.
1N4148 / 1N4448
Document number: DS12019 Rev. 7 - 2
2 of 2
www.diodes.com
March 2008
© Diodes Incorporated