1N4148

Single Diodes Overview

The Lumimax Optoelectronic Technology 1N4148 is a silicon epitaxial planar switching diode housed in a DO-35 glass case. It features a maximum repetitive peak reverse voltage of 75 V and a non-repetitive peak reverse voltage of 100 V. The device supports a forward continuous current of 300 mA with a maximum instantaneous forward voltage of 1.0 V at 10 mA. Key electrical characteristics include a typical junction capacitance of 4.0 pF and a maximum reverse recovery time of 4 ns. Power dissipation is rated at 500 mW, and the operating temperature range spans from -65°C to +175°C.

Single Diodes Feature Summary

• Utilizes silicon epitaxial planar technology for reliable switching performance.
• Features fast switching speed suitable for general-purpose applications.
• Constructed with a DO-35 glass case and plated axial leads solderable per MIL-STD-202E.

Single Diodes Applications

• General purpose switching circuits
• High-speed signal processing
• Clamping and protection applications

Single Diodes Procurement Notes

Verify the specific package configuration against project requirements, as this model corresponds to the DO-35 through-hole variant. Confirm that the 300 mA continuous current rating aligns with thermal management capabilities within the design. Ensure lead spacing matches PCB layout constraints for the axial DO-35 form factor before finalizing component selection.

Single Diodes Selection Notes

Select this component when a robust axial leaded diode is required for high-voltage switching tasks. The 100 V non-repetitive peak reverse voltage provides headroom for transient spikes. Consider the 500 mW power dissipation rating for thermal calculations in enclosed environments. The wide operating temperature range ensures stability in extreme conditions compared to standard commercial grade alternatives.

Single Diodes Part Context

This part belongs to the widely recognized 1N4148 family of small-signal switching diodes. Lumimax offers alternative packages including the SMD 1N4148W (SOD-123), LS4148 (Quadro MELF), and LL4148 (Mini-MELF). The DO-35 version provides mechanical durability and ease of manual handling distinct from surface mount variants.

Single Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N4148 specifications to ensure compatibility with peak surge currents and reverse leakage limits. Verify that substitute components meet the same MIL-STD-202E solderability standards if used in ruggedized applications.