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Product Detailed Parameters
- Description：DIODE ZENER 19V 5W T18
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：19 V
- Tolerance：±10%
- Power - Max：5 W
- Impedance (Max) (Zzt)：3 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 13.7 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
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Overview
The Microchip Technology 1N5356A/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by Microsemi. It provides voltage regulation at 19 V with a ±10% tolerance (A suffix). The device operates in a T-18 axial leaded package and supports a temperature range of -65°C to +150°C. Electrical characteristics include a maximum reverse current of 0.5 µA and a dynamic impedance of 3.0 Ω. The TR12 suffix indicates tape and reel packaging compliant with EIA-296 standards.
Feature Summary
- Provides stable voltage regulation across a broad 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
- Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack
Applications
- Voltage regulation circuits requiring 5W power dissipation
- High surge stress environments
- Broad operating current applications
Procurement Notes
Verify component authenticity and datasheet revision status before procurement. Confirm that the 'TR12' suffix strictly denotes tape and reel packaging as specified in the manufacturer documentation. Ensure the A suffix corresponds to the required ±10% voltage tolerance for your specific design requirements.
Selection Notes
Select this component when a 19V Zener reference with ±10% tolerance is required. The T-18 package accommodates high DC currents provided adequate heat sinking is utilized. Verify thermal resistance parameters against your board layout to ensure steady-state power dissipation limits are not exceeded during operation.
Part Context
This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes originally developed by Microsemi. The series offers a wide selection of voltages from 3.3V to 200V. The e3 suffix indicates RoHS compliance, while the TR suffix specifies tape and reel packaging options for automated assembly processes.
Replacement Considerations
Equivalent parts within the 1N5333-5388B series share similar mechanical and electrical profiles. Cross-reference specific voltage tolerances and thermal ratings when substituting.
