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Product Detailed Parameters
- Description：DIODE ZENER 9.1V 5W T18
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：9.1 V
- Tolerance：±10%
- Power - Max：5 W
- Impedance (Max) (Zzt)：2 Ohms
- Current - Reverse Leakage @ Vr：7.5 µA @ 6.6 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 1N5346AE3/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 9.1 V and a tolerance of ±10%. It operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. The device has a maximum dynamic impedance of 2 Ohms, a reverse leakage current of 7.5 µA at 6.9 V, and a forward voltage of 1.2 V at 1 A. It is RoHS compliant and supplied in tape and reel packaging.
Feature Summary
- Provides stable voltage regulation across a broad operating current and temperature range
- Withstands high surge stresses and exhibits minimal changes in voltage versus current
- Features flexible axial-lead mounting terminals for versatile installation
Applications
- Voltage regulation circuits requiring 5W power dissipation
- Power supply protection against overvoltage conditions
- Reference voltage generation in electronic systems
Procurement Notes
Verify the specific suffix configuration (e.g., TR for tape and reel) matches the required packaging format. Confirm that the ±10% tolerance aligns with circuit design requirements. Ensure thermal management strategies account for the specified junction-to-ambient resistance when mounted on FR4 PCBs.
Selection Notes
Select this component for applications needing a 9.1V reference with moderate precision. Consider the T-18 package dimensions for board layout. Evaluate thermal derating curves if ambient temperatures exceed standard limits or if continuous operation near the 5W rating is expected.
Part Context
This part belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The 'A' suffix indicates a ±10% voltage tolerance, while the 'e3' suffix denotes RoHS compliance. The 'TR' suffix specifies tape and reel packaging for automated assembly processes.
Replacement Considerations
Other parts within the 1N5333B-1N5388B series may serve as substitutes if voltage tolerances differ. Surface mount equivalents like SMBJ5333 to SMBJ5388B are available but require different footprint considerations. Verify pinout compatibility and thermal characteristics before substitution.
