1N5300-1

Overview

The Microchip Technology 1N5300-1 is a surface-mount current regulator diode housed in the DO-213AB MELF glass package. It operates within the MIL-PRF-19500/463 military series, ensuring reliability for demanding environments. The device provides a regulated current of 1.43 mA with a maximum voltage rating of 100 V and a power dissipation capacity of 475 mW. Designed for robust performance, it supports an operating temperature range from -65°C to +175°C junction temperature. This component serves as a stable constant-current source for precision analog circuits requiring compact form factors.

Feature Summary

• Provides stable constant-current regulation without external biasing components
• Constructed with a hermetically sealed glass MELF package for environmental protection
• Qualified for military specifications under MIL-PRF-19500/463 standards
• Supports extended temperature operation suitable for harsh industrial conditions

Applications

• Precision constant-current sources for sensor biasing
• LED driver circuits requiring stable current regulation
• Transistor biasing networks in analog signal processing
• Current limiting protection in sensitive electronic assemblies

Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm exact manufacturing lot details and compliance certifications. Ensure procurement channels are authorized to guarantee authenticity for military-grade components. Cross-reference the datasheet revision date with your design requirements to validate parameter consistency before finalizing orders.

Selection Notes

Select this component when a compact surface-mount solution is required for low-current regulation applications. Compare the 1.43 mA output against circuit load requirements to ensure proper voltage headroom remains below the 100 V limit. Consider the DO-213AB footprint constraints during PCB layout and verify thermal management capabilities align with the 475 mW dissipation rating in enclosed designs.

Part Context

This part belongs to the 1N53xx series of current regulator diodes manufactured by Microchip Technology. It shares functional similarities with through-hole variants like the 1N5312 but offers a surface-mount alternative. The series is characterized by its ability to maintain constant current over a wide voltage range, making it distinct from standard Zener diodes used for voltage regulation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with equivalent MIL-PRF-19500/463 qualified devices from other manufacturers only after confirming pinout and electrical parameter alignment.