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The BZX84-B12,215 is a surface-mount Zener diode from Nexperia's BZX84 series, providing precise 12V voltage regulation. Housed in a compact SOT-23-3 package, it features a tight voltage tolerance of ±2% and a low maximum Zener impedance of 25 Ohms. Designed to deliver stable voltage references and overvoltage protection, it is widely used in power management, signal conditioning, and any electronic circuit requiring accurate voltage clamping.
Category:Discrete Semiconductor Products;Diodes;Zener;Single Zener Diodes
Mfr:Nexperia USA Inc.
Series:BZX84
Packaging:Tape & Reel (TR);Cut Tape (CT)
Part Status:Active
Voltage - Zener (Nom) (Vz):12 V
Tolerance:±2%
Power - Max:250 mW
Impedance (Max) (Zzt):25 Ohms
Current - Reverse Leakage @ Vr:100 nA @ 8 V
Voltage - Forward (Vf) (Max) @ If:900 mV @ 10 mA
Operating Temperature:-65°C ~ 150°C
Mounting Type:Surface Mount
Package / Case:TO-236-3, SC-59, SOT-23-3
Supplier Device Package:TO-236AB
Base Product Number:BZX84-B12
Precise Voltage Regulation:A nominal 12V Zener voltage with a tight ±2% tolerance provides a high-accuracy voltage reference and clamping point for circuits.
Low Dynamic Impedance:A maximum Zener impedance of only 25 Ohms ensures stable output voltage within the rated current range, minimizing the impact of load variations.
Compact Surface-Mount Package:The ubiquitous SOT-23-3 package offers a small footprint, ideal for high-density PCB layouts.
Wide Operating Temperature Range:Supports extreme temperatures from -65°C to 150°C, meeting the demands of industrial and automotive environments.
Low Reverse Leakage Current:Leakage current is just 100 nA at 8V reverse voltage, aiding in reducing system standby power consumption.
Good Power Efficiency:With a maximum power dissipation of 250 mW, it provides effective voltage regulation while maintaining low self-power loss.
Voltage Reference Source:Provides a stable and precise reference voltage for ADCs, DACs, and comparator circuits.
Overvoltage Protection and Voltage Clamping:Used to protect microcontroller I/Os, MOSFET gates, or other sensitive circuitry from damage caused by voltage transients or electrostatic discharge (ESD).
Output Regulation for Low-Dropout Linear Regulators:Serves as the core component in simple regulator circuits, offering a cost-effective voltage regulation solution for low-current loads.
Signal Level Shifting and Limiting:Used in communication interfaces or analog signal chains to limit signal amplitude or perform simple level shifting.
Transient Suppression for Power Rails:Connected in parallel at power inputs to absorb voltage spikes caused by inductive load switching or other factors, enhancing system reliability.
The BZX84-B12,215 is a reliable, high-precision, and compact 12V Zener diode. Its excellent regulation characteristics, wide-temperature operation, and low dynamic impedance make it an ideal choice for implementing voltage reference, overvoltage protection, and signal conditioning functions in various electronic systems. It is particularly suitable for automotive, industrial, and consumer electronic applications where space is constrained and high voltage stability is required.
Industry Information
