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Product Detailed Parameters
- Description：DIODE ZENER 20V 5W T18
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：20 V
- Tolerance：±5%
- Power - Max：5 W
- Impedance (Max) (Zzt)：3 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 14.4 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 1N5357BE3/TR13 is a silicon 5-watt Zener diode with a nominal voltage of 20V and a ±5% tolerance. It features an axial-lead T-18 package, operates from -65°C to +150°C, and has a maximum dynamic impedance of 3.0 ohms at a test current of 65 mA. The device includes RoHS compliance (e3 suffix) and tape-and-reel packaging (TR13 suffix).
Feature Summary
- Provides stable voltage regulation across a broad operating current range.
- Withstands high surge stresses and offers minimal voltage change versus current.
- Features flexible axial-lead mounting terminals for secure installation.
Applications
- Voltage regulation in power supply circuits
- Overvoltage protection for sensitive electronic components
- Reference voltage generation in measurement systems
Procurement Notes
Verify the specific part number against official manufacturer documentation to confirm electrical characteristics and packaging details. Ensure compatibility with existing circuit designs regarding thermal management and voltage ratings before procurement.
Selection Notes
Select this component for applications requiring a 20V Zener reference with 5W power dissipation capability. Consider the ±5% tolerance and thermal resistance specifications when designing heat sinking solutions for continuous operation.
Part Context
This component belongs to the JEDEC registered 1N5333B through 1N5388B series of axial-leaded 5.0 watt Zener diodes. The series provides voltage regulation options ranging from 3.3V to 200V with various tolerance suffixes.
Replacement Considerations
Surface mount equivalents are available as SMBJ5357B or SMBG5357B. Verify pinout and thermal performance when substituting surface mount devices for axial-lead configurations.
FAQ
What is the maximum power dissipation rating?
The maximum power dissipation is 5.0 watts at 25°C ambient temperature.
Does the device require dry pack storage?
No, the moisture classification is Level 1 per IPC/JEDEC J-STD-020B, so no dry pack is required.
