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1N485B
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Product Detailed Parameters
- Description：DIODE STD 200V 200MA DO204AH
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：200 V
- Current - Average Rectified (Io)：200mA
- Voltage - Forward (Vf) (Max) @ If：1 V @ 100 mA
- Speed：Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：1 µA @ 200 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Supplier Device Package：DO-204AH (DO-35)
- Operating Temperature - Junction：-65°C ~ 175°C
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Overview
The Microchip Technology 1N485B is a small signal switching diode designed for general-purpose applications. It features a maximum DC reverse voltage of 180 V and an average rectified forward current of 100 mA. The device operates within a junction temperature range of -65°C to +175°C and dissipates up to 500 mW at 25°C. It utilizes a DO-7 axial through-hole package with hermetically sealed double plug construction.
Feature Summary
- Hermetically sealed glass package with metallurgically bonded double plug construction
- Capable of high surge currents up to 2 A under specified conditions
- Suitable for computer and signal switching applications
Applications
- Computer logic circuits
- Signal switching networks
- General purpose rectification
Procurement Notes
Verify the specific suffix 'B' against the official datasheet to confirm it denotes the standard 1N485 specification rather than a variant with different electrical tolerances or packaging. Confirm RoHS compliance status as historical data indicates non-compliance for this series. Ensure the supplier provides valid traceability documentation for the hermetically sealed glass package.
Selection Notes
Select this component when a hermetically sealed, high-temperature rated silicon switching diode is required. The 180 V reverse voltage rating suits low-voltage digital logic protection. Verify that the DO-7 axial leaded package fits the mechanical constraints of the target PCB layout.
Part Context
This part belongs to the 1N485 family of switching diodes manufactured by Microchip Technology. It shares the same core specifications as the 1N485 and 1N485A variants but may differ in specific manufacturing lot qualifications or military-grade screening per MIL-PRF-19500/118 standards.
Replacement Considerations
Direct substitutes include the 1N485 and 1N485A from Microchip Technology. Cross-manufacturer equivalents such as the 1N914 or 1N4148 may be considered if lower voltage ratings are acceptable, though package and hermetic sealing differences must be evaluated.
