CD0603-Z3V9

Overview

The CD0603-Z3V9 is a surface mount Zener diode from the Bourns CD0603/1005-Z series, housed in a compact 0603 (1608 metric) package. It provides a nominal Zener voltage of 3.9 V with a tolerance range of 3.71 V to 4.10 V at a test current of 5 mA. The device features a maximum Zener impedance of 95 Ohms and a reverse leakage current of 10 mA. It supports a power dissipation of 150 mW at 25°C and operates within a temperature range of -55°C to +125°C.

Feature Summary

• RoHS compliant construction
• Flat configuration minimizes rollaway on standard pick-and-place equipment
• Gold-plated terminals solderable per MIL-STD-750 Method 2026

Applications

• DC-DC converters
• Portable electronics
• Industrial controllers
• Desktop PCs and notebooks

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific product change notifications regarding this discontinued series. Ensure storage conditions align with JEDEC standards to maintain terminal integrity before assembly.

Selection Notes

Select this component for applications requiring precise voltage referencing in space-constrained designs. Verify that the 95 Ohm impedance meets circuit requirements. Confirm compatibility with lead-free manufacturing processes and ensure the 0603 footprint fits the target PCB layout constraints.

Part Context

This part belongs to the CD0603/1005-Z Surface Mount Zener Diode Series by Bourns Inc. The series offers Zener voltages ranging from 2.0 V to 39 V in compact chip packages designed for portable communications, computing, and video equipment markets.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.