1N4148 High-Speed 100 V Switching Diode | DO-35 | General-Purpose Signal Switching HORNBY

The 1N4148 is a fast-switching silicon signal diode designed for high-speed switching, digital logic, protection, and general-purpose low-current applications.
With a reverse voltage rating of 100 V, fast recovery time, and low leakage, it is widely used in communication systems, consumer electronics, test equipment, power supplies, and signal conditioning circuits.
Its DO-35 axial package ensures stable performance, reliability, and ease of PCB or through-hole assembly.

Key Specifications

• VRRM (Max Reverse Voltage): 100 V

• VF (Forward Voltage @ 10 mA): 1.0 V

• IF (Forward Current): 300500 mA typical use, 200 mA continuous

• trr (Reverse Recovery Time): 4 ns

• IFSM (Surge Current): 1 A (non-repetitive)

• IR (Leakage Current): 25 nA (typ), 100 nA (max)

• Package: DO-35

Applications

• High-speed digital switching

• Logic level signal routing

• Protection and clamping circuits

• Wave shaping and signal detection

• Communication and control circuits

• General-purpose switching in compact electronics

Features

• Fast switching speed (≈4 ns)

• Low leakage current

• Stable, reliable silicon junction

• DO-35 axial leaded package

• Ideal for high-speed, low-power circuits

• Widely used and industry-standard device