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1N4249
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Product Detailed Parameters
- Description：DIODE STANDARD 1KV 1AXIAL
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：1000 V
- Current - Average Rectified (Io)：1A
- Voltage - Forward (Vf) (Max) @ If：1.3 V @ 3 A
- Speed：Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：5 µs
- Current - Reverse Leakage @ Vr：1 µA @ 1000 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：A, Axial
- Supplier Device Package：A, Axial
- Operating Temperature - Junction：-65°C ~ 175°C
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Overview
The Microchip Technology 1N4249 is a small signal switching diode designed for high-speed computer and logic applications. It features a peak reverse voltage of 75 V, a forward current rating of 200 mA, and a maximum surge current of 500 mA. The device exhibits a fast recovery time of 4 ns with a low forward voltage of 1 V at specified currents. It operates within a temperature range of -65°C to +150°C and utilizes a DO-35-2 axial through-hole package.
Feature Summary
- High-speed switching capability optimized for digital logic circuits
- Hermetically sealed glass construction for environmental stability
- Low capacitance design suitable for high-frequency signal processing
Applications
- Digital logic gate protection
- Pulse generation and shaping circuits
- Computer input/output isolation
Procurement Notes
Verify the specific manufacturing lot date code against project requirements. Confirm RoHS compliance status as indicated in official documentation. Ensure the DO-35-2 package dimensions match the PCB footprint. Validate thermal derating curves for high-temperature operation scenarios.
Selection Notes
Select this component when fast recovery times are critical for signal integrity. Compare leakage current specifications against sensitive circuit requirements. Consider the axial lead form factor for manual assembly or specific mounting constraints. Evaluate thermal management needs based on the 150°C maximum junction temperature limit.
Part Context
This part belongs to the standard small-signal switching diode family produced by Microchip Technology. It shares functional similarities with other industry-standard switching diodes but offers specific performance characteristics defined by its glass passivation process. The component is widely used in general-purpose electronic designs requiring reliable high-speed rectification.
Replacement Considerations
Consult official substitution lists for equivalent parts with matching electrical parameters. Verify pinout compatibility and package dimensions before implementation. Ensure replacement components meet the same voltage and current ratings.
