1N4148 signal diode
The 1N4148 is a standard silicon switching signal diode. It is one of the most popular and long-lived switching diodes because of its dependable specifications and low cost. Its name follows the JEDEC nomenclature. The 1N4148 is useful in switching applications up to about 100 MHz with a reverse-recovery time of no more than 4 ns.
Overview
As the most common mass-produced switching diode, the 1N4148 replaced the older 1N914. They differed mainly in their leakage current specification, however, today most manufacturers list common specifications. For example, Vishay lists the same leakage current for both parts:
The JEDEC registered part numbers 1N4148 and 1N914 are diodes in an axial package. Diodes with similar properties are available in surface-mount packages.
The 1N4148 is a standard silicon switching signal diode. It is one of the most popular and long-lived switching diodes because of its dependable specifications and low cost. Its name follows the JEDEC nomenclature. The 1N4148 is useful in switching applications up to about 100 MHz with a reverse-recovery time of no more than 4 ns.
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1N4148 diodes in DO-35 glass-encapsulated axial lead package Overview
As the most common mass-produced switching diode, the 1N4148 replaced the older 1N914. They differed mainly in their leakage current specification, however, today most manufacturers list common specifications. For example, Vishay lists the same leakage current for both parts:
- 25 nA at -20 V, 25°C
- 5 μA at -75 V, 25°C
- 50 μA at -20 V, 150°C
The JEDEC registered part numbers 1N4148 and 1N914 are diodes in an axial package. Diodes with similar properties are available in surface-mount packages.