DZ23C51-7

Overview

The DZ23C51-7 is a dual surface mount Zener diode array manufactured by Diodes Incorporated. It integrates two Zener diodes in a common cathode configuration within an SOT-23 package. The nominal Zener voltage is 51 V with a tolerance of ±5%, ranging from 48 V to 54 V at a test current of 5.0 mA. Maximum power dissipation is rated at 300 mW, and the junction-to-ambient thermal resistance is 417 °C/W. The device operates across a temperature range of -65°C to +150°C. Electrical characteristics include a maximum Zener impedance (ZZT) of 100 Ω at 1 kHz and a typical temperature coefficient of +0.110 %/°C.

Feature Summary

• Dual Zener diodes integrated in a single common cathode configuration for space-efficient circuit design.
• High reliability qualification compliant with JEDEC standards for demanding applications.
• Environmentally compliant construction featuring lead-free plating, halogen-free, and antimony-free materials.

Applications

• Voltage reference circuits requiring stable dual supply rails.
• Transient voltage suppression in compact electronic assemblies.
• Clamping applications in signal processing paths.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm commercial versus automotive grade qualification. Confirm that the requested packaging matches the standard tape and reel quantity specified in the datasheet. Ensure compatibility with RoHS 3 directives if environmental compliance is a strict requirement for the target market.

Selection Notes

Select this component when a dual Zener solution is required in a minimal footprint SOT-23 package. Verify that the 51 V breakdown voltage aligns with the circuit's clamping or reference needs. Consider the positive temperature coefficient for thermal stability analysis. Evaluate the 300 mW power dissipation limit against the expected operating conditions to ensure adequate thermal headroom.

Part Context

This part belongs to the DZ23C series of dual surface mount Zener diodes produced by Diodes Incorporated. The series covers a wide voltage range from 2.7 V to 51 V, all sharing the same SOT-23 mechanical outline and 300 mW power rating. The family is designed for automated insertion and offers consistent electrical performance across various voltage options.

Replacement Considerations

Check for the AZ23 series variant if a common anode configuration is required instead of common cathode. Automotive qualified equivalents are available with a Q-suffix designation. Verify pinout compatibility and thermal resistance values when substituting with parts from other manufacturers.

FAQ

What is the typical temperature coefficient for the DZ23C51-7?

The typical temperature coefficient is +0.110 %/°C.

Is the DZ23C51-7 suitable for high-reliability applications?

Yes, the part is qualified to JEDEC standards for high reliability as referenced in AEC-Q specifications.

What is the maximum reverse leakage current specified for this device?

The datasheet does not specify a maximum reverse leakage current value for the DZ23C51-7; it only provides a minimum reverse voltage specification.