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Product Detailed Parameters
- Description：DIODE STANDARD 70V 100MA DO7
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：70 V
- Current - Average Rectified (Io)：100mA
- Voltage - Forward (Vf) (Max) @ If：1 V @ 100 mA
- Speed：Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：15 µA @ 10 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：DO-204AA, DO-7, Axial
- Supplier Device Package：DO-7
- Operating Temperature - Junction：-65°C ~ 100°C
- Grade：-
- Qualification：-
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Overview
The 1N774 BK is a single-phase, one-element germanium rectifier diode manufactured by Central Semiconductor Corp. It features a maximum repetitive reverse voltage of 80V and a continuous forward current rating of 0.2A. The device is housed in the DO-7 axial leaded package, designed for through-hole mounting applications. Key electrical characteristics include a peak reverse voltage of 70V and a forward voltage drop of 1.0V at 100mA. Operating temperature ranges from -65°C to 175°C.
Feature Summary
- Utilizes germanium semiconductor material for low forward voltage drop characteristics
- Designed for general-purpose rectification in through-hole circuit assemblies
- Robust construction suitable for industrial and commercial environments
Applications
- General purpose rectification circuits
- Industrial control systems
- Commercial electronic equipment power supplies
Procurement Notes
Verify the specific suffix 'BK' against official manufacturer documentation to confirm exact mechanical dimensions and marking codes. Ensure compatibility with existing PCB footprints or wire-wrap terminals. Confirm RoHS compliance status if required by project specifications, as germanium devices may have different regulatory classifications compared to silicon alternatives.
Selection Notes
Select this component when low forward voltage drop is critical for efficiency in low-voltage applications. The DO-7 package requires through-hole manufacturing processes. Consider thermal derating curves for high-temperature environments exceeding standard operating limits. Compare leakage current specifications against alternative germanium diodes if signal integrity is paramount.
Part Context
This part belongs to Central Semiconductor's discrete diode portfolio, specifically within the general-purpose rectifier category. The company specializes in high-reliability semiconductor solutions for demanding applications. The 1N774 series represents legacy germanium technology still utilized in specific niche markets requiring particular voltage-current characteristics not met by modern silicon equivalents.
Replacement Considerations
Direct substitutes include other 1N774 variants from different manufacturers. Verify pinout compatibility and thermal resistance values. Alternative materials like silicon Schottky diodes may offer improved performance but require voltage headroom adjustments.
