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Product Detailed Parameters
- Description：DIODE STD 125V 200MA DO204AH
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：125 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)：50 ns
- Current - Reverse Leakage @ Vr：100 nA @ 100 V
- Capacitance @ Vr, F：5pF @ 0V, 1MHz
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Supplier Device Package：DO-204AH (DO-35)
- Operating Temperature - Junction：175°C (Max)
- Grade：-
- Qualification：-
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Overview
The BAY72 is a small signal diode manufactured by Fairchild Semiconductor, designed for general-purpose high conductance applications. It features a maximum repetitive peak reverse voltage of 125 V and an average rectified forward current of 200 mA. The device is housed in the DO-35 (DO-204AH) axial leaded package. Key electrical specifications include a maximum DC reverse leakage current of 1 µA at rated voltage and a maximum forward voltage drop of 1.0 V at 100 mA. The component supports a maximum operating junction temperature of 150 °C.
Feature Summary
- High conductance characteristics optimized for efficient signal rectification
- Robust thermal performance with a maximum junction temperature rating of 150 °C
- Low forward voltage drop to minimize power loss during conduction
Applications
- General-purpose rectification in low-power circuits
- Signal demodulation and detection
- Clamping and protection circuits
Procurement Notes
Verify part authenticity through authorized distributors or direct manufacturer channels. Confirm that the component matches the specified DO-35 package and electrical ratings. Check for obsolescence status as Fairchild Semiconductor products may be discontinued or superseded by newer equivalents. Ensure storage conditions comply with moisture sensitivity levels if applicable.
Selection Notes
Select this component when a small-signal diode with 125 V reverse voltage capability and 200 mA current handling is required. The DO-35 package suits through-hole PCB designs. Consider the 1.0 V forward voltage drop for efficiency calculations. Verify compatibility with circuit switching speeds and thermal management requirements before integration.
Part Context
The BAY72 belongs to the family of general-purpose high conductance diodes produced by Fairchild Semiconductor. It serves as a standard solution for basic rectification tasks in consumer electronics and industrial control systems. The device complements other small-signal diodes in the series, offering reliable performance in axial leaded configurations for legacy and new designs requiring robust discrete components.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official replacement guides or contact the manufacturer for compatible alternatives.
