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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 4.3V TO-236AB
- Series：BZB84-Q
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：4.3 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：90 Ohms
- Current - Reverse Leakage @ Vr：3 µA @ 1 V
- Operating Temperature：150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：TO-236AB
- Voltage - Forward (Vf) (Max) @ If：900 mV @ 10 mA
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Overview
The Nexperia BZB84-B4V3-QR is a dual voltage regulator diode in a SOT23 surface-mounted package. It features a nominal Zener voltage of 4.3 V with a ±2% tolerance series (B). The device has a total power dissipation of 300 mW and operates within a junction temperature range of -55 °C to +150 °C. Key electrical parameters include a maximum reverse current of 90 μA at IZ=5 mA, a differential resistance of 3 Ω, and a temperature coefficient of -3.5 mV/K. The forward voltage is typically 0.9 V at IF=10 mA.
Feature Summary
- Dual common anode configuration for compact circuit design
- Qualified according to AEC-Q101 for automotive applications
- High non-repetitive peak reverse power dissipation capability
Applications
- General regulation functions
Procurement Notes
Verify the specific ordering suffix against official Nexperia documentation to confirm packaging details and availability status. Ensure that the component matches the required automotive qualification standards if deployed in vehicle electronics. Cross-reference the marking code 'VF%' with the datasheet to validate authenticity upon receipt.
Selection Notes
Select this component when a precise 4.3 V reference is needed in a dual-diode arrangement. The B-series offers tighter voltage tolerance compared to the C-series. Consider the negative temperature coefficient for thermal stability requirements in the target operating environment.
Part Context
This part belongs to the BZB84-Q series, which provides general-purpose Zener diodes in small SMD packages. The series covers a wide working voltage range from 2.4 V to 75 V. The BZB84-B4V3-QR specifically utilizes the SOT23 plastic package suitable for automated surface-mount assembly processes.
Replacement Considerations
Other variants within the BZB84-Q series share identical pinouts and package dimensions. Substitution requires matching the Zener voltage and tolerance class. Verify that alternative components meet the same AEC-Q101 qualification if automotive reliability is mandated.
