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1N5378/TR8
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Product Detailed Parameters
- Description：DIODE ZENER 100V 5W T18
- Series：-
- Mfr：Microsemi Corporation
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：100 V
- Tolerance：±20%
- Power - Max：5 W
- Impedance (Max) (Zzt)：90 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 72 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 Microsemi Corporation 1N5378/TR8 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation at a nominal Zener voltage of 100 V with a standard ±5% tolerance, indicated by the B suffix. The device operates within an ambient temperature range of -65°C to +150°C and features a T-18 axial lead package. Electrical characteristics include a maximum dynamic impedance of 90 ohms and a maximum reverse current of 0.5 µA.
Feature Summary
- Provides stable voltage regulation across broad operating current and temperature ranges
- Withstands high surge stresses and maintains minimal voltage changes versus current
- Features flexible axial-lead mounting terminals for secure installation
- Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020
Applications
- Voltage regulation in power supply circuits
- Overvoltage protection for sensitive electronic components
- Reference voltage generation in measurement equipment
Procurement Notes
Verify the specific suffix letter on the part number to confirm the exact voltage tolerance required for the application. Confirm that the TR8 designation aligns with the tape and reel packaging option specified in the datasheet. Ensure the component meets all environmental and screening requirements before final procurement.
Selection Notes
Select this component when a 100 V regulation point is needed with a 5-watt power dissipation capability. Consider the thermal resistance and derating curves if the device will operate at elevated temperatures or without adequate heat sinking. Verify that the axial lead format fits the mechanical constraints of the target PCB layout.
Part Context
This device belongs to the 1N5333B through 1N5388B series of silicon Zener diodes manufactured by Microsemi. The series offers a wide selection of voltages ranging from 3.3 V to 200 V. These plastic encapsulated devices are designed for applications requiring robust performance and reliable voltage regulation under varying conditions.
Replacement Considerations
Surface mount equivalents such as SMBG5378B are available with identical electrical characteristics. Other manufacturers may offer direct replacements within the same JEDEC series; verify pinout compatibility and thermal specifications.
