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Product Detailed Parameters
- Description：DIODE ZENER 24V 5W T18
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Zener (Nom) (Vz)：24 V
- Tolerance：±5%
- Power - Max：5 W
- Impedance (Max) (Zzt)：3.5 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 17.3 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 1N5359B/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 24V and ±5% tolerance. It operates in the -65°C to +150°C range and features a T-18 axial lead package. The device has a maximum dynamic impedance of 3.5 ohms, a reverse current of 0.5 µA at 17.3V, and a forward voltage of 1.2V at 1.0A.
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 through-hole integration
Applications
- Voltage regulation circuits requiring 5W power dissipation
- High surge stress environments
- Through-hole PCB assembly
Procurement Notes
Verify the manufacturer origin as the component was originally produced by Microsemi before acquisition by Microchip Technology. Confirm that the TR12 suffix indicates tape and reel packaging per EIA-296 standards. Ensure compliance requirements match the specific manufacturing lot, as RoHS status may vary between legacy and updated production runs.
Selection Notes
Select this component when a 24V reference with tight ±5% tolerance is required. The T-18 package supports high DC currents if adequate heat sinking is provided. Verify thermal resistance specifications against the intended mounting method, as steady-state power dissipation drops significantly when mounted on FR4 PC boards compared to direct lead heating.
Part Context
This part belongs to the JEDEC registered 1N5333B through 1N5388B series of axial-leaded 5.0 watt Zener diodes. The series covers voltages from 3.3V to 200V. The 'B' suffix specifically denotes a standard voltage tolerance of plus or minus 5%. The 'TR12' suffix designates the tape and reel packaging option.
Replacement Considerations
1N5359B
FAQ
What is the maximum surge current rating?
The maximum surge current (IZSM) is specified as the maximum peak of a non-recurrent half-sine wave of 8.3 ms duration.
How is polarity indicated on the device?
Polarity is indicated by a band on the cathode end. The diode must be operated with the banded end positive with respect to the opposite end.
