1N4148-A

Single Diodes Overview

The 1N4148-A is a fast switching silicon epitaxial planar diode manufactured by Diodes Incorporated. It features a DO-35 glass case with a lead-free finish compliant with RoHS directives. The device supports a maximum repetitive reverse voltage of 75 V and an average rectified output current of 150 mA. Electrical characteristics include a maximum forward voltage of 1.0 V at 100 mA, a peak reverse current of 5.0 µA at 75 V, and a total capacitance of 4.0 pF. The junction-to-ambient thermal resistance is 300 °C/W, and the operating temperature range spans from -65°C to +175°C.

Single Diodes Feature Summary

• Fast switching speed suitable for high-frequency applications
• General purpose rectification capability
• Silicon epitaxial planar construction

Single Diodes Applications

• High-speed switching circuits
• General purpose rectification
• Clamping and protection circuits

Single Diodes Procurement Notes

Verify that the component is sourced from authorized channels to ensure authenticity. Confirm the specific ordering suffix matches the required packaging format, as the datasheet indicates variations such as Ammo Pack or Tape & Reel. Ensure compliance with environmental directives like RoHS if applicable to your manufacturing process. Check for any recent product change notices regarding material composition or performance specifications before finalizing procurement.

Single Diodes Selection Notes

Select this component for designs requiring fast recovery times and low leakage current in a standard through-hole package. Note that the manufacturer explicitly recommends using the 1N4148W or 1N4448W variants for new designs instead of this legacy part. Consider the thermal resistance and power dissipation limits when designing for higher ambient temperatures or continuous operation conditions.

Single Diodes Part Context

This component belongs to the 1N4148 family of small-signal switching diodes. It utilizes a DO-35 glass encapsulation which provides UL flammability classification rating 94V-0. The device is marked with its type number and identifies polarity via a cathode band. It is designed for general-purpose applications where fast switching and reliable rectification are required.

Single Diodes Replacement Considerations

The manufacturer explicitly states that this part is not recommended for new design and suggests using the 1N4148W or 1N4448W as replacements. These newer variants typically offer surface-mount packages while maintaining similar electrical characteristics.