1N5248B/TR

Single Zener Diodes Overview

The Microchip Technology 1N5248B/TR is a 0.5 W glass axial-lead Zener diode with an 18 V nominal breakdown voltage and ±5% tolerance. It operates within a -65°C to +175°C range, dissipating up to 500 mW at 25°C. The device features a maximum reverse leakage current of 100 nA at 13.3 V and a Zener impedance of 21 Ω at 0.25 mA. Packaged in DO-35 (DO-204AH) format on tape and reel per EIA-296 standards, it provides stable voltage regulation across broad operating currents.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental stability
• Voltage regulation capability over a wide temperature and current range
• Tape and reel packaging option for automated surface mounting processes

Single Zener Diodes Applications

• Precision voltage reference circuits
• Overvoltage protection networks
• General-purpose voltage regulation tasks

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm package type and screening level. Confirm RoHS compliance status if required by assembly specifications. Ensure the ordering quantity aligns with the manufacturer's standard tape and reel packaging multiples. Cross-reference the part number with the latest Microchip documentation to validate availability and manufacturing origin details.

Single Zener Diodes Selection Notes

Select this component when a 18 V regulated output is required within a 500 mW power budget. The DO-35 axial lead form factor suits through-hole PCB layouts. Verify that the ±5% tolerance meets circuit requirements. Consider thermal derating curves for high ambient temperature environments to ensure reliable operation within the specified junction temperature limits.

Single Zener Diodes Part Context

This device belongs to the JEDEC registered 1N5221 through 1N5281 series of 0.5 W Zener diodes. The 'B' suffix denotes a standard 5% voltage tolerance, while the 'TR' suffix indicates tape and reel packaging. These components are widely used in industrial and commercial electronics requiring reliable voltage clamping or reference functions.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N5248 variants meeting identical electrical specifications. Surface mount equivalents like MLL5248B offer space-saving alternatives. Military screened versions require specific prefix identifiers such as MQ or MX.