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1N4745AG
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Product Detailed Parameters
- Description：DIODE ZENER 16V 1W DO204AL
- Series：-
- Mfr：Microsemi Corporation
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：16 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：16 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 12.2 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Microsemi Corporation 1N4745AG is a single silicon Zener diode designed for voltage regulation applications. It features a hermetically sealed glass body in the DO-204AL (DO-41) package, suitable for through-hole mounting. The device provides a nominal Zener voltage of 16 V with a tolerance of 5%. It supports a maximum power dissipation of 1 W and operates within a temperature range from -65 °C to +175 °C. Key electrical characteristics include a test current of 15.5 mA and a dynamic impedance of 16 Ohms.
Feature Summary
- Hermetically sealed glass encapsulation for enhanced environmental protection
- High thermal resistance capability allowing operation up to 175 °C
- Compression bonded construction ensuring corrosion resistance
Applications
- Voltage regulation in high-reliability electronic circuits
- Overvoltage protection in aerospace systems
- Reference voltage generation in military-grade equipment
Procurement Notes
Verify the specific manufacturer source, as Microsemi's semiconductor assets are now part of Microchip Technology. Confirm that the 'G' suffix denotes the hermetically sealed glass variant rather than standard plastic packaging. Ensure compliance requirements match the intended application environment before procurement.
Selection Notes
Select this component when hermetic sealing and extended temperature performance are required. The glass body offers superior stability compared to plastic alternatives. Verify that the 16 V rating aligns with circuit design needs and that the DO-41 package fits the available board space constraints.
Part Context
This part belongs to the 1N47xx series of 1-watt Zener diodes. The 'G' suffix specifically identifies the hermetically sealed glass version, distinguishing it from plastic-bodied variants like the 1N4745AP. This series is widely used in ruggedized electronics where long-term reliability under harsh conditions is critical.
Replacement Considerations
Compatible substitutes include the 1N4745AHR1G from Taiwan Semiconductor or the 1N4745A from onsemi. Note that these alternatives may use plastic packages unless explicitly specified as hermetic equivalents. Verify pinout compatibility and thermal ratings before substitution.
