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1N485B_T50R
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Product Detailed Parameters
- Description：DIODE STANDARD 200V 200MA DO35
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- 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：25 nA @ 175 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Supplier Device Package：DO-35
- Operating Temperature - Junction：175°C (Max)
- Grade：-
- Qualification：-
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Overview
The onsemi 1N485B_T50R is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 7.5V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500mW and utilizes the DO-35 axial through-hole package. Key electrical characteristics include a maximum dynamic impedance of 19Ω at the test current, a reverse leakage current of 2µA at 6V, and a forward voltage drop of 1.2V at 200mA. The component supports a maximum operating junction temperature of 200°C.
Feature Summary
- Provides stable voltage regulation within a specified breakdown range using avalanche breakdown principles.
- Features low dynamic impedance to maintain consistent output voltage under varying load conditions.
- Constructed with high-conductance silicon to ensure reliable performance in general-purpose circuits.
Applications
- Voltage reference sources in precision measurement equipment
- Overvoltage protection circuits for sensitive semiconductor components
- Clamping applications in signal processing paths
Procurement Notes
Verify the specific suffix T50R against official datasheets to confirm packaging and reel specifications. Confirm RoHS compliance status as historical data may vary by production lot. Ensure the DO-35 package dimensions match your PCB footprint requirements before finalizing procurement decisions.
Selection Notes
Select this component when a 7.5V regulation point is required with moderate power handling capabilities. The DO-35 package suits through-hole designs where space constraints are minimal. Consider thermal derating curves if operation exceeds standard ambient temperatures to ensure long-term reliability.
Part Context
This part belongs to the broader family of small-signal Zener diodes manufactured by onsemi. These devices are commonly used in consumer electronics and industrial control systems. The 1N485B designation aligns with standard JEDEC numbering conventions for 7.5V Zener diodes, ensuring compatibility with legacy circuit designs.
Replacement Considerations
Cross-reference with other manufacturers' 1N485B equivalents such as those from Fairchild or Microsemi. Verify that substitute parts meet the same 500mW power rating and DO-35 package outline to ensure mechanical fit and electrical equivalence.
