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1N4739CP/TR12
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Product Detailed Parameters
- Description：DIODE ZENER 9.1V 1W DO204AL
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：9.1 V
- Tolerance：±2%
- Power - Max：1 W
- Impedance (Max) (Zzt)：5 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 7 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
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N4739CP/TR12 is a silicon Zener diode with a nominal voltage of 9.1 V and a power dissipation rating of 1.0 W at 25°C. It features a 2% tolerance, indicated by the 'C' suffix, and operates within a temperature range of -65°C to +150°C. The device utilizes a DO-41 (DO-204AL) plastic axial package and is supplied in tape and reel format per EIA-296 standards.
Feature Summary
- Provides precise voltage regulation with tight 2% tolerance for stable reference applications
- Features flexible axial-lead mounting terminals suitable for through-hole PCB integration
- Constructed with void-free transfer molded thermosetting epoxy meeting UL94V-0 flammability ratings
Applications
- Voltage regulation circuits requiring stable reference levels
- Overvoltage protection in electronic systems
- Clamping applications in signal processing paths
Procurement Notes
Verify the specific ordering suffixes against official Microchip documentation to confirm exact electrical tolerances and packaging configurations. Ensure compatibility with RoHS requirements if applicable, as standard versions may contain lead. Confirm moisture sensitivity level and storage conditions prior to assembly.
Selection Notes
Select this component when a 9.1 V Zener voltage with high precision is required. The 2% tolerance offers better accuracy than standard 5% or 10% variants. Consider the thermal resistance and derating curves for high-power environments. Verify that the axial lead form factor fits the target mechanical design constraints.
Part Context
This part belongs to the 1N4728A through 1N4764A series of 1.0 Watt Zener diodes manufactured by Microsemi (now Microchip). The series covers a wide voltage range from 3.3 V to 100 V. The 'P' suffix denotes plastic encapsulation, which provides lower thermal resistance compared to glass-body options, while the 'TR12' indicates tape and reel packaging.
Replacement Considerations
Equivalent parts include other 9.1 V, 1 W Zener diodes in DO-41 packages with 2% tolerance. Cross-reference with JEDEC registered numbers like 1N4739A/C. Surface mount equivalents such as SMAJ4739A are available for different mounting requirements.
