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1N5378B/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：±5%
- 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 1N5378B/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 100V and a ±5% tolerance. It features a maximum dynamic impedance of 90 ohms at a test current of 12 mA, and a maximum reverse leakage current of 0.5 µA at 72V. The device supports a maximum regulator current of 47.5 mA and withstands surge currents up to 800 A. It operates within a temperature range of -65°C to +150°C and utilizes a T-18 axial lead package.
Feature Summary
- Provides stable voltage regulation across a broad operating current and temperature range
- Withstands high surge stresses and offers minimal changes in voltage versus current
- Features flexible axial-lead mounting terminals for secure installation
Applications
- Voltage regulation circuits requiring 100V reference
- Power supply protection against overvoltage conditions
- Surge suppression in electronic systems
Procurement Notes
Verify the specific suffix 'TR8' indicates tape and reel packaging per EIA-296 standards. Confirm RoHS compliance status as standard B-suffix devices may not be compliant unless marked with 'e3'. Ensure the supplier provides documentation matching the JEDEC registered specifications for the 1N5378B part number.
Selection Notes
Select this component when a 100V Zener voltage with tight ±5% tolerance is required. Consider the 5W power dissipation capability and thermal resistance characteristics for heat sinking requirements. Verify that the axial lead format fits the mechanical constraints of the target printed circuit board design.
Part Context
This part belongs to the 1N5333B through 1N5388B series of JEDEC registered silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a voltage range from 3.3V to 200V in various tolerances. The 1N5378B specifically addresses the 100V segment of this high-power axial-leaded product line.
Replacement Considerations
Surface mount equivalents are available in the SMBJ5333 to SMBJ5388B series. Military screening options exist using MQ, MX, or MV prefixes. Cross-reference with other manufacturers offering 5W axial Zener diodes if sourcing availability is limited.
