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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V TO-236AB
- Series：BZB84-Q
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：45 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 12.6 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-B18-QR is a dual voltage regulator diode in a SOT-23 surface-mount package. It features a common anode configuration with two independent cathodes. The nominal Zener voltage is 18 V, with a tolerance of ±2%. Total power dissipation is 300 mW, while non-repetitive peak reverse power dissipation reaches 40 W per diode. Operating temperature ranges from -55 °C to +150 °C. Reverse current is 225 μA at 5 mA test current. Diode capacitance is 12.6 pF at 1 MHz. Forward voltage is 0.9 V at 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
- Automotive electronic circuits
Procurement Notes
Verify the specific suffix and marking code against official Nexperia documentation before ordering. Confirm that the B series tolerance matches the design requirements. Ensure the SOT-23 footprint aligns with the PCB layout specifications. Check for any recent product change notifications that might affect availability or parameters.
Selection Notes
Select this component when a dual Zener solution with a shared ground reference is required. The B series provides tighter voltage tolerance compared to the C series. Consider the thermal resistance and total power dissipation limits when designing for high ambient temperatures. Verify compatibility with the target operating voltage range and current requirements.
Part Context
This device belongs to the BZB84-Q series of dual voltage regulator diodes. The series offers various nominal working voltages from 2.4 V to 75 V. All variants share the same SOT-23 package and common anode structure. The Q suffix indicates AEC-Q101 qualification for automotive use.
Replacement Considerations
Other BZB84-Q series parts with different voltage ratings can replace this unit if the circuit allows. Single Zener diodes like BZX84-Q may be used if only one channel is needed. Ensure the replacement maintains the common anode configuration if both channels are utilized.
