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Product Detailed Parameters
- Description：DIODE STD 660V 1.75A B SQMELF
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：660 V
- Current - Average Rectified (Io)：1.75A
- Voltage - Forward (Vf) (Max) @ If：1.35 V @ 2 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：45 ns
- Current - Reverse Leakage @ Vr：2 µA @ 660 V
- Capacitance @ Vr, F：40pF @ 10V, 1MHz
- Mounting Type：Surface Mount
- Package / Case：SQ-MELF, B
- Supplier Device Package：B, SQ-MELF
- Operating Temperature - Junction：-65°C ~ 150°C
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Overview
The Microchip Technology 1N6628U is a surface mount ultrafast recovery glass rectifier designed for high-reliability applications. It features a voidless hermetically sealed package with an internal Category I metallurgical bond. The device supports a working peak reverse voltage of 600 V and an average rectified forward current of 2.3 A at +110°C. Electrical characteristics include a maximum reverse recovery time of 45 ns, a maximum forward voltage of 1.5 V at 4 A, and a maximum reverse current of 2 µA at 600 V. It operates within a junction temperature range of -65°C to +150°C.
Feature Summary
- Military qualified to MIL-PRF-19500/590 standards
- Voidless hermetically sealed glass construction
- Ultrafast recovery performance suitable for fast switching
- Inherently radiation hard
Applications
- Military and other high-reliability applications
- Switching power supplies requiring extremely fast switching
- Applications demanding low forward loss
Procurement Notes
Verify the specific ordering suffix (e.g., US, TR) against the datasheet to confirm the exact package type and reel specifications. Confirm that the required screening level (JAN, JANTX, or JANS) matches the project's reliability requirements. Ensure compliance with RoHS status as indicated in the documentation. Check for any specific PCN updates regarding assembly sites or packaging label changes before finalizing procurement.
Selection Notes
Select this component when a surface mount ultrafast recovery rectifier with military-grade reliability is required. The 600V rating and 2.3A current capacity suit medium-power high-frequency circuits. Consider the D-5B package dimensions for PCB layout compatibility. Evaluate thermal resistance and derating curves if operating near the maximum junction temperature limits.
Part Context
This part belongs to the 1N6626US through 1N6631US series of ultrafast recovery rectifiers. These devices are industry-recognized equivalents to the JEDEC registered 1N6626 to 1N6631 series. The series offers various voltage ratings from 200V to 1000V while maintaining consistent ultrafast recovery characteristics and robust hermetic construction.
Replacement Considerations
Surface mount equivalents to the axial-leaded 1N6628 are available within the same series. Verify pinout and package dimensions when substituting with non-Microsemi parts to ensure mechanical fit.
