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Product Detailed Parameters
- Description：DIODE STANDARD 75V 200MA DIE
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：75 V
- Current - Average Rectified (Io)：200mA
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 100 mA
- Speed：Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr)：5 ns
- Current - Reverse Leakage @ Vr：500 nA @ 75 V
- Capacitance @ Vr, F：-
- Mounting Type：Surface Mount
- Package / Case：Die
- Supplier Device Package：Die
- Operating Temperature - Junction：-55°C ~ 175°C
- Grade：-
- Qualification：-
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Overview
The Microchip Technology CD4148WD is a surface-mount silicon epitaxial planar switching diode designed for high-speed applications. It features a reverse voltage rating of 75V and an average forward current capability of 200mA. The device exhibits a fast reverse recovery time of 5ns and a maximum forward voltage drop of 1.2V at specified currents. Operating temperatures range from -65°C to +175°C, ensuring reliability in demanding environments.
Feature Summary
- Surface-mount SMD chip pattern suitable for automated pick-and-place assembly
- Fast switching performance with low reverse recovery time
- Extended temperature operation up to +175°C
Applications
- High-speed signal switching circuits
- Computer logic interface protection
- General purpose rectification in compact designs
Procurement Notes
Verify the specific package dimensions and marking codes against the official Microchip datasheet before integration. Confirm that the ordering suffix corresponds to the required tape-and-reel quantity or bulk packaging format. Ensure compliance with RoHS directives if applicable to your manufacturing process. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and traceability.
Selection Notes
Select this component when space constraints require a surface-mount solution for general-purpose switching. It is appropriate for circuits requiring moderate current handling with fast response times. Consider the thermal resistance and power dissipation limits relative to the PCB copper area. Compare with through-hole alternatives if mechanical robustness during assembly is a primary concern over footprint size.
Part Context
This device belongs to the standard 4148 family of small-signal switching diodes. It serves as a surface-mount equivalent to traditional through-hole variants like the 1N4148. The die package allows for integration into dense printed circuit board layouts while maintaining the electrical characteristics associated with high-speed digital and analog switching applications.
Replacement Considerations
Check for compatible surface-mount equivalents such as the CD4148WP or generic 1N4148W variants. Verify pinout compatibility and physical footprint alignment before substitution. Ensure that replacement parts meet the same voltage and current ratings to maintain circuit integrity.
