1N5337C/TR12

Single Zener Diodes Overview

The Microsemi Corporation 1N5337C/TR12 is a silicon Zener diode with a nominal voltage of 4.7V and a ±2% tolerance, indicated by the 'C' suffix. It operates in a T-18 axial leaded plastic package and supports a maximum power dissipation of 5 watts at 25°C. The device includes a tape and reel option denoted by the 'TR12' suffix. Electrical characteristics include a test current of 260 mA, a maximum dynamic impedance of 2.0 ohms, and a maximum reverse current of 5 µA.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation within a tight ±2% tolerance band
• Capable of handling high surge stresses and steady-state currents with adequate heat sinking
• Features flexible axial-lead mounting terminals for standard PCB integration
• Moisture classification Level 1 requiring no dry pack storage

Single Zener Diodes Applications

• Voltage regulation in broad operating current and temperature ranges
• Power supply circuits requiring stable reference voltages
• Protection against overvoltage conditions in electronic systems

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required configuration. Confirm the presence of the TR12 suffix indicates tape and reel packaging rather than bulk or tube. Ensure the C suffix corresponds to the necessary ±2% tolerance level for the design requirements. Cross-reference the manufacturer's latest documentation to confirm RoHS compliance status and material composition details before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 4.7V Zener voltage with high precision is required. The 5-watt power rating allows for significant current handling capabilities compared to lower-power variants. Consider the thermal resistance and derating curves if the application involves elevated ambient temperatures or limited heat sinking. Verify that the axial lead form factor fits the mechanical constraints of the target assembly.

Single Zener Diodes Part Context

This part belongs to the JEDEC registered 1N5333 through 1N5388B series of 5-watt silicon Zener diodes. The series offers a wide selection of voltages from 3.3V to 200V. Different suffix letters identify specific voltage tolerances, while prefixes can denote military screening levels. The T-18 package provides a robust plastic encapsulation suitable for various industrial applications.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5337B (±5% tolerance) or 1N5337D (±1% tolerance). Military screened equivalents are available with MQ, MX, or MV prefixes. Surface mount alternatives exist in SMBJ or SMBG packages.