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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/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 20 V and ±5% tolerance. It features a maximum dynamic impedance of 3 Ω and a reverse leakage current of 500 nA at 14.4 V. The device operates within a temperature range of -65°C to +150°C, utilizes a T-18 axial lead package, and includes RoHS compliance indicated by the e3 suffix.
Feature Summary
- Provides stable voltage regulation across a broad operating current and temperature range
- Withstands high surge stresses and exhibits 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 that the part number matches the specific JEDEC registered series requirements. Confirm the presence of the e3 suffix for RoHS compliance and TR suffix for tape and reel packaging. Ensure the supplier provides documentation confirming the component meets the specified electrical characteristics and environmental standards.
Selection Notes
Select this component when a 5-watt power dissipation rating is required for high-current applications. The 20 V nominal voltage and ±5% tolerance suit standard regulation needs. Consider the thermal resistance and derating curves if operating near maximum limits or in confined spaces without adequate heat sinking.
Part Context
This component belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi (now Microchip). The series offers a wide selection of voltages from 3.3 V to 200 V with various tolerance options identified by suffix letters. These devices are designed for robust performance in demanding environments.
Replacement Considerations
Equivalent parts include other 5W Zener diodes with 20V nominal voltage and ±5% tolerance. Verify compatibility regarding package dimensions, thermal characteristics, and maximum current ratings before substitution.
