1N5247B/TR

Single Zener Diodes Overview

The Microchip Technology 1N5247B/TR is a 0.5 W glass axial-lead Zener diode with a nominal voltage of 17 V and a ±5% tolerance (B suffix). It operates within a temperature range of -65°C to +175°C, featuring a maximum reverse current of 100 nA at 11.4 V and a Zener impedance of 19 Ω at a test current of 7.4 mA. The device utilizes a DO-35 package and includes the TR suffix for tape-and-reel packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance characteristics suitable for high-frequency applications
• Constructed in a hermetically sealed glass axial-lead package

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection networks
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the required tape-and-reel packaging format rather than bulk supply. Confirm the 'e3' RoHS compliance status if environmental regulations apply to your specific manufacturing process. Ensure the manufacturer designation aligns with your approved vendor list, as production may originate from Microsemi or Microchip Technology divisions.

Single Zener Diodes Selection Notes

Select this component when a precise 17 V regulation point is required with tight ±5% tolerance. The low reverse leakage current makes it suitable for sensitive biasing applications. Verify that the 0.5 W power dissipation rating meets the thermal requirements of the target circuit design under steady-state conditions.

Single Zener Diodes Part Context

This part belongs to the widely used 1N5221 through 1N5281B series of 0.5 W Zener diodes. The series offers an extensive selection of voltages ranging from 2.4 V to 200 V. The B suffix specifically denotes the tighter ±5% voltage tolerance compared to the standard A suffix.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5247 without the TR suffix for bulk packaging, or other manufacturers' 1N5247 variants. Ensure any substitute maintains the same DO-35 package dimensions and electrical parameters.

Single Zener Diodes FAQ

What does the 'TR' suffix indicate?

The 'TR' suffix indicates that the device is supplied in tape-and-reel packaging, conforming to EIA-296 standards.

How is polarity identified on the component?

Polarity is indicated by a band on the glass body; the cathode is located at the banded end.