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Product Detailed Parameters
- Description：DIODE STANDARD 225V A SQMELF
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：225 V
- Current - Average Rectified (Io)：-
- Voltage - Forward (Vf) (Max) @ If：1 V @ 400 mA
- Speed：Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：50 nA @ 225 V
- Capacitance @ Vr, F：-
- Mounting Type：Surface Mount
- Package / Case：SQ-MELF, A
- Supplier Device Package：A, SQ-MELF
- Operating Temperature - Junction：-65°C ~ 175°C
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Overview
The JANS1N6661US is a standard recovery rectifier diode manufactured by Microchip Technology. It features a maximum DC reverse voltage of 225 V and an average forward current rating of 500 mA. The device utilizes a surface-mount SQ-MELF package with a D-5A form factor. Electrical characteristics include a maximum forward voltage of 1 V at 400 mA and a reverse leakage current of 50 nA at 225 V. The component supports a wide operating junction temperature range from -65°C to +175°C.
Feature Summary
- Hermetically sealed construction using void-less glass technology for high reliability
- Internal metallurgical bond designed for applications where failure cannot be tolerated
- Surface mount configuration available via the US suffix designation
Applications
- High-reliability military electronic systems
- Aviation and aerospace power circuits
- Defense communication equipment requiring hermetic sealing
Procurement Notes
Verify that the specific part number includes the JANS prefix if space-qualified or enhanced screening is required, as the base 1N6661US may differ in qualification level. Confirm the SQ-MELF package type matches the PCB footprint requirements. Ensure the manufacturer documentation explicitly states the void-less-glass construction and internal metallurgical bond specifications for the intended application environment.
Selection Notes
Select this component when a surface-mount standard recovery diode is needed for low-current applications up to 500 mA. The 225 V reverse voltage rating suits moderate voltage rectification tasks. Consider the extended temperature range capability for harsh environments. Verify that the SQ-MELF package dimensions align with the design constraints compared to through-hole alternatives.
Part Context
This device belongs to the 1N6661 series of industry-recognized rectifiers. The US suffix indicates a surface-mount variant, distinct from the through-hole DO-35 version. These components are typically qualified to MIL-PRF-19500 standards, ensuring consistency in performance and reliability across military and commercial aerospace supply chains.
Replacement Considerations
Consult official datasheets to confirm pinout compatibility and electrical parameter equivalence before substituting. Verify package dimensions for the SQ-MELF format.
