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Product Detailed Parameters
- Description：DIODE ZENER 56V 5W T18
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：56 V
- Tolerance：±20%
- Power - Max：5 W
- Impedance (Max) (Zzt)：35 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 40.3 V
- Operating Temperature：-65°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：T-18, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 1 A
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N5370/TR12 is a silicon Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation with a nominal Zener voltage of 56 V and a standard tolerance of ±5%. The device features a T-18 axial lead package, rated for 5.0 watts of power dissipation at 25°C. Electrical characteristics include a maximum dynamic impedance of 35 Ohms and a maximum reverse current of 0.5 µA. It operates within a temperature range of -65°C to +150°C.
Feature Summary
- Provides stable voltage regulation across a broad operating current and temperature range
- Withstands high surge stresses and offers flexible axial-lead mounting terminals
- Features minimal changes in voltage versus current as specified by voltage regulation parameters
Applications
- Voltage reference circuits requiring stable DC levels
- Power supply protection against overvoltage conditions
- General purpose voltage regulation in electronic systems
Procurement Notes
Verify the specific suffix configuration to ensure compatibility with required moisture classification and screening levels. Confirm that the tape and reel packaging meets handling requirements. Check for RoHS compliance status if environmental regulations apply to the assembly process. Ensure adequate heat sinking is planned for operation near maximum power dissipation limits.
Selection Notes
Select this component when a 56 V regulation point is required with ±5% precision. Consider the thermal resistance and derating curves for high ambient temperatures. Verify that the axial lead form factor fits the PCB layout constraints. Compare dynamic impedance specifications against noise sensitivity requirements of the application circuit.
Part Context
This part belongs to the 1N5333B through 1N5388B series of 5-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a wide voltage selection from 3.3 V to 200 V. The 'TR12' suffix indicates the device is supplied in a tape and reel format suitable for automated assembly processes.
Replacement Considerations
Equivalent parts within the same series include 1N5370A or 1N5370C depending on tolerance requirements. Surface mount equivalents are available as SMBJ5370B or SMBG5370B.
