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Product Detailed Parameters
- Description：DIODE ZENER 190V 1W DO204AL
- Series：-
- Mfr：Microsemi Corporation
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：190 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：1700 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 144.8 V
- Operating Temperature：-65°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 200 mA
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Overview
The Microsemi Corporation 1EZ190D5E3/TR8 is a silicon unidirectional Zener diode housed in the DO-204AL (DO-41) axial leaded plastic package. It provides a nominal Zener voltage of 190V with a tolerance of 5%. The device is rated for a maximum power dissipation of 1W and operates within an extended temperature range from -65°C to +150°C. This component complies with RoHS standards, indicating it is lead-free.
Feature Summary
- Provides precise voltage regulation at 190V with tight 5% tolerance
- Capable of handling 1W power dissipation in a standard axial package
- Operates reliably across extreme temperatures from -65°C to +150°C
- Manufactured using lead-free silicon compliant with environmental directives
Applications
- High-voltage DC power supply regulation circuits
- Overvoltage protection stages in industrial control systems
- Voltage reference components in precision measurement instrumentation
Procurement Notes
Verify that the specific ordering suffix matches the required tolerance and packaging format. Confirm RoHS compliance status if restricted materials are prohibited in your assembly process. Ensure the axial lead configuration fits your printed circuit board layout constraints before finalizing procurement.
Selection Notes
Select this component when a stable 190V reference is required in high-power applications. The 5% tolerance suits designs needing tighter regulation than standard 10% variants. Verify thermal management capabilities for the 1W dissipation rating within the operating environment.
Part Context
This part belongs to the Microsemi 1EZ series of 1-watt Zener diodes. These devices utilize silicon junction technology to deliver reliable voltage clamping. The DO-204AL package offers robust mechanical stability for through-hole mounting in demanding electronic assemblies.
Replacement Considerations
Check for equivalent parts with matching 190V Zener voltage, 1W power rating, and 5% tolerance. Ensure replacement components support the same DO-204AL package and operate within the specified -65°C to +150°C temperature range.
