1N4454

Overview

The Fairchild Semiconductor 1N4454 is a silicon epitaxial planar switching diode housed in the DO-35 axial leaded package. It features a maximum repetitive peak reverse voltage of 75 V and an average forward rectified current rating of 200 mA at 25°C ambient temperature. The device exhibits a maximum forward voltage drop of 1 V at 10 mA and a low reverse leakage current of 100 nA at 50 V. Its fast switching capability is characterized by a maximum reverse recovery time of 4 ns. The component supports a wide operating junction temperature range from -65°C to +175°C and can withstand a maximum surge current of 4 A.

Feature Summary

• Fast switching performance with a 4 ns reverse recovery time suitable for high-speed digital applications
• High thermal stability allowing operation up to a junction temperature of 175°C
• Robust mechanical construction utilizing double plug metallurgical bonding within a hermetic glass envelope

Applications

• General-purpose signal rectification in electronic circuits
• Clamping and protection stages in computer logic systems
• High-frequency switching operations requiring rapid transition times

Procurement Notes

Verify the specific manufacturer designation, as the 1N4454 part number is utilized by multiple semiconductor producers including onsemi, Microchip, and Diodes Inc. Confirm that the procured unit matches the required electrical specifications, particularly the 75 V reverse voltage rating and 200 mA current capacity. Ensure the package type corresponds to the DO-35 axial lead configuration and validate compliance with relevant environmental standards such as RoHS before integration into the design.

Selection Notes

Select this component when a standard small-signal switching diode with a 75 V blocking voltage is required. It serves as a direct replacement for similar legacy parts like the 1N914 or 1N4148 where the slightly lower voltage rating is acceptable. Consider the DO-35 through-hole package for prototyping or applications requiring manual assembly. Evaluate the 200 mA continuous current limit against the circuit's peak load requirements to ensure reliable long-term operation under specified thermal conditions.

Part Context

The 1N4454 belongs to the family of general-purpose silicon switching diodes widely used in consumer electronics and industrial control equipment. Manufactured using epitaxial planar technology, it offers consistent electrical characteristics and reliability. The DO-35 package provides a compact form factor ideal for dense printed circuit board layouts. This component represents a standard industry solution for basic rectification and signal processing tasks across various electronic subsystems.

Replacement Considerations

• 1N4148
• 1N914
• BAV99

FAQ

What is the maximum reverse recovery time for the 1N4454?

The maximum reverse recovery time is 4 nanoseconds.

Does the 1N4454 support surface mount installation?

No, the standard 1N4454 is designed for through-hole mounting in the DO-35 axial lead package.

What is the maximum operating junction temperature?

The maximum operating junction temperature is 175°C.