1N4148 Fast-Switching Silicon Diode 10pcs per Pack

The 1N4148 diode is a widely used fast-switching silicon diode, commonly employed in signal processing and high-speed switching applications. Here are its key specifications and characteristics:

Specifications:

• Type: General-purpose fast switching diode
• Material: Silicon
• Package: DO-35 (glass axial lead)
• Forward Voltage Drop (Vf): ~0.7V at 10mA
• Reverse Voltage (Vr): 100V (maximum)
• Maximum Forward Current (If): 300mA (continuous)
• Peak Surge Current (Ifsm): 2A (for 1ms)
• Reverse Recovery Time (trr): ~4ns (nanoseconds) – very fast
• Power Dissipation (Pd): 500mW

Applications:

• High-speed switching circuits
• Logic circuits and digital applications
• Signal processing
• Protection circuits (e.g., flyback diodes)
• Voltage clamping and rectification in low-power circuits

Comparison with 1N4007:

Unlike 1N4007, which is a rectifier diode with a much higher current rating (1A) but slower switching speed, the 1N4148 is designed for fast signal switching rather than power rectification.