BZB784-C4V7-QX

Overview

The Nexperia BZB784-C4V7-QX is a low-power voltage regulator double diode housed in an SOT323 (SC-70) surface-mounted device package. It features a nominal working voltage of 4.7 V with approximately 5% tolerance and a total power dissipation of up to 350 mW. The component is qualified according to AEC-Q101 for automotive applications. Key electrical characteristics include a maximum reverse current of 3 µA at VR = 1 V, a differential resistance of 425 Ω typ at IZ = 5 mA, and a non-repetitive peak reverse current of 6.0 A.

Feature Summary

• Dual common-anode configuration for compact circuit designs
• Automotive qualification compliant with AEC-Q101 standards
• Low forward voltage drop for efficient operation

Applications

• General regulation functions
• ESD protection
• Surge protection

Procurement Notes

Verify the specific suffix 'QX' against official Nexperia documentation to confirm packaging details such as reel or cut tape specifications. Ensure the ordering code matches the exact voltage variant required for the design. Confirm that the AEC-Q101 qualification status meets the target application's reliability requirements before finalizing procurement.

Selection Notes

Select this component when a dual Zener diode solution is needed in a small SC-70 footprint. The 4.7 V nominal voltage suits reference circuits requiring moderate precision. Consider the thermal resistance values if multiple devices are mounted closely on the PCB. Verify that the operating temperature range of -55 °C to +150 °C aligns with the environmental conditions of the intended system.

Part Context

This part belongs to the BZB784-Q series, which offers a comprehensive range of nominal voltages from 2.4 V to 15 V. All variants share the same SOT323 package and AEC-Q101 automotive qualification. The series provides customized protection options for high-density circuit designs where space is limited.

Replacement Considerations

Other BZB784-Q series variants (e.g., BZB784-C4V3-Q, BZB784-C5V1-Q) offer different voltage ratings but share identical pinouts and packages. Non-automotive equivalents like the standard BZB784-C4V7 lack the Q-series automotive qualification.