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1N4757CP/TR12
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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：±2%
- Power - Max：1 W
- Impedance (Max) (Zzt)：95 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 1N4757CP/TR12 is a silicon Zener diode with a nominal voltage of 51V and a 2% tolerance. It operates in the DO-204AL (DO-41) plastic axial-lead package, rated for 1.0W power dissipation at 25°C. The device features a maximum dynamic impedance of 95Ω at a test current of 5.0mA and a maximum reverse leakage current of 5μA at 38.8V. It supports an operating temperature range from -65°C to +150°C and includes a tape-and-reel suffix for automated mounting.
Feature Summary
- Provides precise voltage regulation with tight 2% tolerance
- Features flexible axial-lead terminals for standard mounting
- Constructed with void-free transfer molded thermosetting epoxy body
- Moisture classification Level 1 requiring no dry pack
Applications
- Voltage regulation over broad operating current ranges
- Temperature compensation circuits
- Reference voltage sources
Procurement Notes
Verify that the ordering suffix matches the required specifications. Confirm the 'C' suffix indicates the 2% voltage tolerance and the 'TR' suffix denotes the tape-and-reel packaging format. Ensure the RoHS compliance status aligns with project requirements by checking for the 'e3' designation if lead-free plating is mandatory.
Selection Notes
Select this component when a 51V reference with high precision is required. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the 1.0W power rating and thermal derating curves for circuit design. Verify compatibility with existing JEDEC registered part numbers if replacing legacy designs.
Part Context
This part belongs to the 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers voltages from 3.3V to 100V. The specific model utilizes the plastic encapsulation variant, distinguished from glass-body options by its superior thermal characteristics and mechanical robustness.
Replacement Considerations
Surface mount equivalents are available as SMAJ4757A or MLL4757A. Military screening levels can be obtained by adding prefixes such as MQ, MX, MV, or MSP to the base part number.
