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Product Detailed Parameters
- Description：DIODE STANDARD 75V 50MA DO7
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：75 V
- Current - Average Rectified (Io)：50mA
- Voltage - Forward (Vf) (Max) @ If：1 V @ 5 mA
- Speed：Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：500 µA @ 50 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：DO-204AA, DO-7, Axial
- Supplier Device Package：DO-7
- Operating Temperature - Junction：-50°C ~ 75°C
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 1N34A TR is a germanium point-contact diode designed for high-frequency detection and mixing applications. It utilizes a DO-35 glass axial leaded package configuration, providing robust performance in radio frequency circuits. The device is characterized by its low forward voltage drop and fast switching capabilities, making it suitable for signal processing tasks where minimal capacitance is critical. This component represents a legacy semiconductor technology adapted for modern manufacturing standards.
Feature Summary
- Germanium point-contact construction for superior high-frequency response
- DO-35 glass axial leaded package for reliable mounting
- Optimized for low-capacitance RF detection and mixing
Applications
- Radio frequency signal detection
- High-frequency mixing circuits
- Crystal radio receivers
Procurement Notes
Verify the specific ordering suffix required for plating options, as Central Semiconductor distinguishes between Tin/Lead and Lead-Free variants through explicit suffixes added to the base part number. Confirm package integrity upon receipt, as glass axial leads require careful handling during insertion to prevent mechanical stress or breakage during PCB assembly processes.
Selection Notes
Select this component when germanium material properties are necessary for specific RF characteristics that silicon alternatives cannot replicate. Ensure the circuit design accommodates the thermal limitations inherent to small-signal germanium devices. Verify that the operating environment does not exceed the maximum junction temperature ratings specified in the official datasheet documentation.
Part Context
This part belongs to the standard 1N series of point-contact diodes, historically significant in early radio technology. Central Semiconductor continues production of select legacy parts to support maintenance and restoration projects. The TR suffix indicates tape and reel packaging, facilitating automated surface mount or specialized through-hole placement equipment integration.
Replacement Considerations
The source document lists 1N34A TR as having no available replacement (N/A, Stock Only). No direct substitute part numbers are provided in the official discontinuation notice.
