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1N4757AP/TR8
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Product Detailed Parameters
- Description：DIODE ZENER 51V 1W DO204AL
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：51 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：90 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 38.8 V
- Operating Temperature：-65°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N4757AP/TR8 is a silicon Zener diode housed in the DO-204AL (DO-41) axial through-hole package. It provides a nominal Zener voltage of 51V with a standard tolerance of ±5%. The device is rated for a maximum power dissipation of 1W and operates within a temperature range from -65°C to +150°C. It features a low reverse leakage current of 5µA at 38.8V and a dynamic impedance of 95Ω. This component is supplied in reel packaging.
Feature Summary
- Provides stable voltage regulation across a broad operating current and temperature range
- Utilizes plastic encapsulation for lower thermal resistance compared to glass-body options
- Offers extensive voltage selection within the 1N47 series family
Applications
- Voltage regulation circuits
- Reference voltage sources
- Overvoltage protection
Procurement Notes
Verify the specific suffix 'TR8' against the manufacturer's official documentation to confirm reel quantity and packaging specifications. Ensure the part number matches the required ±5% tolerance variant, as other suffixes may indicate different tolerances or screening levels. Confirm RoHS compliance status if environmental regulations apply to your assembly process.
Selection Notes
Select this component when a 51V reference is required in an axial leaded package. Consider the 1W power rating and ±5% tolerance for precision applications. Evaluate the thermal resistance benefits of the plastic DO-41 case over glass alternatives. Verify that the operating temperature range meets the environmental requirements of the target system.
Part Context
This part belongs to the widely used 1N47xx series of 1-watt Zener diodes manufactured by Microchip Technology. The series covers a broad spectrum of voltages from 3.3V to 100V. The 'AP' designation typically indicates a plastic package with standard 5% tolerance, while the 'TR8' suffix denotes the specific tape and reel packaging format used for automated insertion.
Replacement Considerations
Surface mount equivalents are available in SMAJ and MLL packages. Military screening variants exist with MQ, MX, MV, or MSP prefixes. Cross-reference with other manufacturers offering JEDEC registered 1N4757 parts for pin-compatible substitution.
