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85HQ045
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Product Detailed Parameters
- Description：DIODE SCHOTTKY 45V 80A DO203AB
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：45 V
- Current - Average Rectified (Io)：80A
- Voltage - Forward (Vf) (Max) @ If：740 mV @ 80 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：2 mA @ 45 V
- Capacitance @ Vr, F：-
- Mounting Type：Stud Mount
- Package / Case：DO-203AB, DO-5, Stud
- Supplier Device Package：DO-203AB (DO-5)
- Operating Temperature - Junction：-65°C ~ 175°C
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 85HQ045 is a Schottky rectifier diode housed in the DO-203AB (DO-5) axial leaded package. It features a maximum DC reverse voltage (Vr) of 45 V and an average forward rectified current (Io) rating of 80 A. The device exhibits a typical forward voltage drop (Vf) of 740 mV at 80 A and a maximum reverse leakage current of 2 mA at 45 V. Designed for high-speed switching applications, it operates within a junction temperature range of -65°C to +175°C.
Feature Summary
- Schottky barrier technology for low forward voltage drop
- High surge current capability with 80 A average rectified current rating
- Extended operating junction temperature range up to 175°C
Applications
- General purpose rectification in power supplies
- Free-wheeling diodes in inductive load circuits
- Reverse polarity protection in automotive systems
Procurement Notes
Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm RoHS status as this specific part may not comply with current environmental directives. Ensure proper handling procedures are followed due to the through-hole mounting style and thermal requirements during installation.
Selection Notes
Select this component when a robust, high-current Schottky rectifier is required for low-voltage applications. The 45 V rating suits 12 V or 24 V systems. Consider the DO-203AB package size for board space constraints. Verify thermal management needs given the 80 A current capacity and potential heat dissipation requirements under continuous load conditions.
Part Context
This diode belongs to Microchip's discrete semiconductor product line, specifically within the single diode rectifier category. It utilizes Schottky technology to minimize power loss compared to standard PN junction diodes. The DO-203AB package provides reliable mechanical stability for industrial and automotive environments requiring durable through-hole connections.
Replacement Considerations
Consult official substitution guides for equivalent Schottky rectifiers with matching 45 V Vr and 80 A Io ratings. Verify pinout compatibility and thermal characteristics before replacing. Ensure any substitute maintains similar reverse leakage performance and junction temperature limits.
