1PGSMA4746 R3G

Single Zener Diodes Overview

The Taiwan Semiconductor 1PGSMA4746 R3G is a surface-mount Zener diode housed in the DO-214AC (SMA) package. It provides a nominal Zener voltage of 18 V with a ±5% tolerance, operating within a range of 17.1 V to 18.9 V. The device features a maximum total power dissipation of 1 W at 75°C ambient temperature and supports a junction temperature up to 175°C. Electrical characteristics include a test current of 14.0 mA, a maximum dynamic impedance of 750 Ω, and a leakage current not exceeding 1 µA at 13.7 V reverse voltage.

Single Zener Diodes Feature Summary

• Utilizes photo glass passivated chip junction technology for enhanced reliability
• Designed specifically for automated placement processes
• Exhibits low inductance characteristics suitable for high-speed switching
• Compliant with RoHS directives and halogen-free standards

Single Zener Diodes Applications

• General purpose voltage regulation circuits
• Circuit protection against overvoltage transients
• Reference voltage generation in electronic systems

Single Zener Diodes Procurement Notes

Verify the specific ordering code suffix to confirm packaging configuration, as standard availability typically utilizes tape and reel formats. Confirm compliance requirements such as RoHS and REACH status directly with the manufacturer or authorized distributors prior to procurement. Ensure that the selected component meets the moisture sensitivity level requirements specified in J-STD-020 for your assembly process.

Single Zener Diodes Selection Notes

Select this component when a precise 18 V reference is required in a compact surface-mount footprint. Consider the thermal derating curves if the operating ambient temperature exceeds 50°C to maintain the 1 W power rating. Evaluate the dynamic impedance and leakage current specifications against circuit sensitivity requirements to ensure adequate voltage stability under varying load conditions.

Single Zener Diodes Part Context

This part belongs to the 1PGSMA series, which covers a wide voltage range from 10 V to 200 V in the DO-214AC package. The series is characterized by its glass passivation and suitability for automated manufacturing. It serves as a standard solution for general-purpose Zener applications requiring robust performance in space-constrained designs.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include parts with identical voltage ratings and package types, such as other variants in the 1PGSMA SMA lineup. Cross-referencing electrical parameters like impedance and leakage current is essential when considering alternatives from different manufacturers.