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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：±10%
- 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 1N5357A/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 20 volts and a ±10% tolerance. It operates within a temperature range of -65°C to +150°C and features a T-18-2 axial lead package. The device provides voltage regulation across a broad operating current and temperature range, characterized by minimal changes in voltage versus current.
Feature Summary
- Provides stable voltage regulation over a wide operating current and temperature range
- Features flexible axial-lead mounting terminals for through-hole integration
- Withstands high surge stresses and exhibits minimal voltage change versus current
Applications
- Voltage regulation in power supply circuits
- Overvoltage protection for sensitive electronic components
- Reference voltage generation in measurement systems
Procurement Notes
Verify the component status as this part number may be discontinued or subject to limited availability. Confirm that the TR8 suffix corresponds to tape and reel packaging requirements for your assembly line. Ensure compatibility with RoHS standards if required by your manufacturing specifications.
Selection Notes
Select this component when a 5-watt power dissipation rating and a 20-volt regulation point are required. Consider the T-18-2 package dimensions for PCB layout constraints. Evaluate thermal management needs based on the specified junction-to-lead thermal resistance for your specific mounting configuration.
Part Context
This component belongs to the JEDEC registered 1N5333B through 1N5388B series of axial-leaded 5.0 watt Zener diodes. The series offers a selection of voltages from 3.3 to 200 volts with various tolerance options identified by specific suffix letters. These plastic encapsulated devices are designed for high maximum DC currents with adequate heat sinking.
Replacement Considerations
Equivalent parts include the 1N5357B (±5% tolerance) and 1N5357C (±2% tolerance). Verify that substitute components match the 5-watt power rating and T-18-2 package form factor.
