1N4148 (5 pieces)

The 1N4148 is a small-signal, fast switching silicon diode in a glass DO-35 package, sold here in a pack of 5 pieces. Its very short reverse recovery time of 4 ns makes it a standard part for logic and signal circuits, input protection, keyboard matrices and flyback protection across small relay coils.

1N4148 Specifications

• Type: small-signal fast switching diode
• Repetitive peak reverse voltage: 100 V (75 V continuous)
• Forward current: 150 mA to 200 mA continuous, depending on the manufacturer
• Forward voltage: 1 V max at 10 mA
• Reverse recovery time: 4 ns max
• Package: DO-35 glass, axial leads, through-hole
• Pack size: 5 pieces

1N4148 Applications

• Diode logic gates and signal steering
• Clamping and protecting microcontroller inputs
• Flyback diodes across small relay coils
• Preventing ghosting in keyboard and button matrices
• Signal detectors and rectifiers in audio and radio circuits

What's in the Box

• 5 × 1N4148 switching diodes

Tip: The band printed on the glass body marks the cathode (−). For power supply rectification or currents above about 150 mA, use a rectifier diode such as the 1N4007 instead.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.