DL4758A-TP

Single Zener Diodes Overview

The DL4758A-TP is a glass-encapsulated Zener diode manufactured by Micro Commercial Components. It provides a nominal Zener voltage of 56 V with a ±5% tolerance, tested at a current of 4.5 mA. The device dissipates up to 1 W of power and features a maximum dynamic impedance of 110 Ohms at the test current. Reverse leakage current is limited to 5 µA at 42.6 V. It operates within a temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Glass MELF encapsulation for high reliability
• Very sharp reverse characteristic breakdown curve
• Low reverse current level for stable regulation

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Power supply regulation

Single Zener Diodes Procurement Notes

Verify authenticity through authorized distributors or direct MCC channels due to counterfeiting risks. Confirm RoHS compliance status and lead-free finish specifications before procurement. Ensure storage conditions align with moisture sensitivity level requirements to maintain component integrity during assembly.

Single Zener Diodes Selection Notes

Select this component when a 56 V regulated voltage is required in a surface-mountable glass package. Consider the 110 Ohm dynamic impedance and 5 µA leakage current for precision applications. Verify thermal management capabilities against the 100K/W junction-to-ambient rating for continuous operation.

Single Zener Diodes Part Context

This part belongs to the DL4728-DL4761 series of 1 Watt Zener diodes ranging from 3.3 V to 75 V. The 'A' suffix indicates a 5% voltage tolerance, while the 'TP' suffix designates RoHS compliance and tape-and-reel packaging. The series utilizes a standardized glass MELF form factor suitable for automated placement.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers: SMAJ4758A-TP (MCC). Note that SMAJ4758A-TP uses an SMD/SMT DO-214AC package rather than the glass MELF format.