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1N4747P/TR8
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Product Detailed Parameters
- Description：DIODE ZENER 20V 1W DO204AL
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：20 V
- Tolerance：±10%
- Power - Max：1 W
- Impedance (Max) (Zzt)：22 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 15.2 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 1N4747P/TR8 is a silicon 1.0-watt Zener diode in a plastic DO-41 axial lead package. It provides voltage regulation at a nominal 20V with a standard 5% tolerance. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 22 ohms at a test current of 12.5 mA. It includes a tape and reel packaging option for automated assembly.
Feature Summary
- Plastic molded epoxy body offering lower thermal resistance compared to glass-body options
- Moisture classification Level 1 requiring no dry pack storage
- Flexible axial-lead terminals suitable for through-hole mounting
- ESD nonsensitive per MIL-STD-750 Method 1020
Applications
- Voltage regulation over broad operating current ranges
- Temperature compensation circuits
- Reference voltage sources in electronic systems
Procurement Notes
Verify the specific suffix configuration against official datasheets to confirm material composition and compliance status. Ensure the ordering code matches the required tolerance and packaging format. Cross-reference JEDEC registration numbers for accurate electrical parameter validation before integration into designs.
Selection Notes
Select this component when a 1-watt power dissipation rating and 20-volt regulation are required. The plastic construction offers distinct thermal advantages over glass variants. Confirm that the 5% voltage tolerance aligns with circuit requirements and that the axial lead form factor fits the intended PCB layout constraints.
Part Context
This part belongs to the 1N4728AP through 1N4764AP series of silicon Zener diodes manufactured by Microsemi, now part of Microchip Technology. The series covers a wide voltage selection from 3.3 to 100 volts. These devices are JEDEC registered and designed for general-purpose voltage regulation applications in industrial and commercial electronics.
Replacement Considerations
Equivalent parts include other 1N4747A series diodes from different manufacturers. Surface mount equivalents such as SMAJ4747A or MLL4747A are available for space-constrained designs. Verify pinout compatibility and thermal characteristics when substituting.
