BZB784-C4V3-QX

Overview

The Nexperia BZB784-C4V3-QX is a low-power voltage regulator double diode housed in an SOT323 (SC-70) surface-mounted device plastic package. It features a common anode configuration with two cathodes, offering a nominal Zener voltage of 4.3 V with approximately ±5% tolerance at IZ = 5 mA. The device supports a total power dissipation of up to 350 mW and operates within a junction temperature range of -55 °C to +150 °C. It is qualified according to AEC-Q101 standards for automotive applications.

Feature Summary

• Dual-diode architecture in a compact SC-70 package suitable for high-density circuit designs
• AEC-Q101 qualification ensuring reliability for demanding automotive environments
• Narrow working-voltage tolerances for precise regulation functions

Applications

• General voltage regulation
• Voltage reference circuits
• ESD and surge protection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm packaging details such as reel or cut tape specifications. Ensure that the component meets the required automotive quality standards by checking the latest product status information directly from official Nexperia channels before finalizing procurement orders.

Selection Notes

Select this component when a dual-diode configuration with a common anode is required in a small form factor. The BZB784-C4V3-QX provides a 4.3 V regulation point with tight tolerance. Consider the thermal resistance characteristics and maximum forward current limits when designing for high-density PCB layouts to ensure reliable operation under varying load conditions.

Part Context

This part belongs to the BZB784-Q series of voltage regulator double diodes designed for automotive and general electronic applications. The series offers various nominal voltages ranging from 2.4 V to 15 V, all sharing the same SOT323 package footprint. The '-Q' designation indicates compliance with AEC-Q101 stress test qualifications for discrete semiconductors.

Replacement Considerations

Direct substitutes within the same series include other BZB784-C variants with different Zener voltages if the voltage requirement changes. Cross-series replacements like the BZX84W require verification of pin compatibility and electrical parameter alignment.