CDLL5545

Single Zener Diodes Overview

The CDLL5545 is a silicon unidirectional Zener voltage regulator diode manufactured by Microchip Technology. It features a hermetically sealed glass MELF case (DO-213AA) suitable for surface mount applications. The device provides a nominal Zener voltage of 30 V with a maximum power dissipation of 500 mW at an ambient temperature of 25°C. It operates within a junction and storage temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass construction
• Qualified per MIL-PRF-19500/437 standards
• Low reverse leakage current characteristics

Single Zener Diodes Applications

• Voltage regulation in military electronic systems
• Overvoltage protection circuits
• Reference voltage sources in high-reliability environments

Single Zener Diodes Procurement Notes

Verify the specific suffix (B, C, D, or none) required for tolerance levels, as these affect guaranteed parameter limits. Confirm package compatibility with DO-213AA dimensions. Ensure procurement channels provide traceability documentation consistent with MIL-PRF-19500/437 qualification requirements for defense or aerospace projects.

Single Zener Diodes Selection Notes

Select this component when a stable 30 V reference is needed in harsh thermal environments. The low thermal resistance and wide operating temperature range support demanding applications. Consider the ±5% tolerance of the B suffix for precision regulation needs where tighter control is not mandatory.

Single Zener Diodes Part Context

This part belongs to the CDLL5518 through CDLL5546 series of leadless surface mount Zener diodes. These devices are designed for high-reliability applications requiring robust packaging and consistent electrical performance under extreme conditions.

Single Zener Diodes Replacement Considerations

Compatible replacements include other MIL-PRF-19500/437 qualified Zener diodes with matching 30 V nominal voltage and 500 mW power rating in a DO-213AA package.