BZX84C18S-7-F

Overview

The BZX84C18S-7-F is a dual surface mount Zener diode manufactured by Diodes Incorporated, housed in an SOT-363 package. It provides two independent Zener diodes with a nominal voltage of 18V and a tolerance range of 16.8V to 19.1V at a test current of 5mA. The device supports a maximum power dissipation of 200mW and operates within a temperature range of -65°C to +150°C. Electrical characteristics include a maximum Zener impedance (ZZT) of 45 Ohms and a maximum reverse leakage current of 0.1µA at 12.6V. The component features matte tin plating and complies with RoHS standards.

Feature Summary

• Dual configuration providing two independent Zener diodes in a single ultra-small surface mount package
• Planar die construction designed for high reliability and consistent performance
• Lead-free and RoHS compliant manufacturing process utilizing green molding compounds

Applications

• Voltage reference circuits requiring dual independent references
• Clamping and protection applications for sensitive electronic components
• General-purpose voltage regulation in compact consumer electronics

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to ensure correct packaging and compliance status. Confirm that the requested part number matches the exact electrical specifications required for the design. Cross-reference the date code and marking information to validate production batch details. Ensure all procurement activities adhere to the manufacturer's life support policy restrictions.

Selection Notes

Select this component when a dual Zener solution is required in a space-constrained SOT-363 footprint. Evaluate the thermal resistance and power derating curves to ensure adequate heat dissipation under operating conditions. Compare the Zener impedance and leakage current specifications against circuit requirements to verify signal integrity. Consider the voltage tolerance range to determine if tighter precision variants are necessary for the application.

Part Context

This component belongs to the BZX84C series of dual surface mount Zener diodes produced by Diodes Incorporated. The series covers a wide voltage range from 2.4V to 39V, offering flexibility for various low-power regulation needs. The SOT-363 package allows for automated assembly and reduced board space compared to discrete single diodes. This specific variant targets applications needing two regulated voltages from a single package.

Replacement Considerations

Direct replacements must match the SOT-363 package, 18V nominal voltage, and dual configuration. Verify that alternative manufacturers provide equivalent Zener impedance and leakage current specifications. Ensure the replacement part maintains the same thermal characteristics and operating temperature range. Check for any differences in marking codes or packaging formats that might affect assembly processes.