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1N485B/TR
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Product Detailed Parameters
- Description：DIODE STD 180V 200MA DO204AH
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：180 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：25 nA @ 180 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 ~ 200°C
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Overview
The Microchip Technology 1N485B/TR is a small-signal switching diode designed for through-hole mounting in the DO-35-2 axial leaded package. It features a peak reverse voltage of 180 V and a maximum forward current of 100 mA, with a surge current capability of 2 A. The device dissipates up to 500 mW of power and exhibits a forward voltage drop of 1 V at rated current. Reverse leakage current is specified at 25 nA. It operates within a temperature range of -65°C to +175°C and is supplied in tape-and-reel packaging.
Feature Summary
- High-temperature operation capability up to 175°C
- Low reverse leakage current for signal integrity
- Robust surge current handling for transient protection
Applications
- Signal rectification in computer circuits
- General-purpose switching applications
- Clamping and protection circuits
Procurement Notes
Verify the specific manufacturer datasheet for the 1N485B/TR to confirm exact electrical tolerances and thermal characteristics before integration. Ensure the DO-35-2 package dimensions match your PCB footprint requirements. Confirm that the tape-and-reel quantity aligns with your assembly line specifications. Check for any RoHS compliance documentation if required by your manufacturing standards.
Selection Notes
Select this component when a high-voltage switching diode with a wide operating temperature range is required. The 180 V rating distinguishes it from lower-voltage variants like the 1N483B. Consider the through-hole DO-35 package for manual assembly or high-reliability mechanical anchoring needs compared to surface-mount alternatives.
Part Context
This part belongs to the standard 1N48x series of silicon planar switching diodes manufactured by Microchip Technology. These components are widely used in digital logic and computer interface circuits where fast recovery and low capacitance are beneficial. The 'TR' suffix indicates the device is delivered in a continuous reel format suitable for automated pick-and-place machinery.
Replacement Considerations
Compatible substitutes include other 180V switching diodes in the DO-35 package, such as the 1N4937 or generic equivalents meeting the same electrical specifications. Verify pinout compatibility and thermal resistance values when cross-referencing with other manufacturers' parts.
