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Ⅰ.Overview of product

BZX84-C5V1-QR is a single zener diode under Nexperia USA Inc.’s BZX84-Q series, featuring surface mount design, compact packaging and stable electrical performance, suitable for general electronic voltage regulation and protection scenarios.

Ⅱ.Core parameter

Category:Discrete Semiconductor Products,Diodes,Zener,Single Zener Diodes

Mfr:Nexperia USA Inc.

Series:BZX84-Q

Packaging:Tape & Reel

Part Status:Active

Voltage - Zener (Nom) (Vz):5.1 V

Tolerance:±5%

Power - Max:250 mW

Impedance (Max) (Zzt):60 Ohms

Current - Reverse Leakage @ Vr:2 µA @ 2 V

Voltage - Forward (Vf) (Max) @ If:900 mV @ 10 mA

Operating Temperature:150°C (TJ)

Mounting Type:Surface Mount

Package / Case:TO-236-3, SC-59, SOT-23-3

Ⅲ.Main characteristics

Stable Vz:5.1V nominal zener voltage with ±5% tolerance, ensuring consistent voltage regulation in various working conditions, which is essential for precise circuit operation.

Low Leakage:Reverse leakage current is only 2 µA @ 2 V, minimizing power loss and improving the energy efficiency of the entire circuit system.

Low Impedance:Maximum zener impedance of 60 Ohms enables fast response to voltage fluctuations, maintaining stable output even when the load changes slightly.

High Temp Resistance:With a maximum junction temperature of 150°C (TJ), it can work reliably in high-temperature environments such as industrial control equipment or automotive auxiliary circuits.

Compact Package:Adopting TO-236-3, SC-59, SOT-23-3 packages, it is small in size and suitable for high-density PCB design, saving installation space for electronic products.

Surface Mount:Optimized for surface mount technology (SMT), it supports automated assembly, improving production efficiency and reducing manual operation errors.

Suitable Power:250 mW maximum power rating meets the requirements of most low-power electronic circuits, balancing performance and cost-effectiveness.

Ⅳ.Application field

Power Regulation:Used in portable charger modules to stabilize the output voltage at 5.1V, preventing overvoltage from damaging the charging interface of mobile phones or tablets.

Voltage Reference:Provides a precise 5.1V reference voltage for the sampling circuit of industrial temperature sensors, ensuring accurate temperature data collection and transmission.

Overvoltage Protection:Installed on the Bluetooth headset charging board to absorb transient voltage surges during charging, protecting the headset’s core control chip from damage.

Signal Clipping:Applied in the preamplifier circuit of portable speakers to limit the peak voltage of audio input signals, avoiding distortion and protecting the speaker’s voice coil.

MCU Protection:Connected to the I/O pins of smart home door sensor MCUs, preventing voltage spikes from external interference from burning out the MCU and ensuring stable operation of the door sensor.

Linear Regulator Protection:Used in USB small fan drive circuits to protect the linear regulator from overvoltage faults, ensuring the fan runs stably at the rated speed.

Instrument Calibration:Serves as a voltage benchmark in the calibration circuit of digital multimeters, helping to improve the measurement accuracy of the multimeter for low-voltage signals.

Ⅴ.Summary

BZX84-C5V1-QR is a cost-effective single zener diode with stable performance and compact structure. Its excellent electrical characteristics and wide application scenarios make it an ideal choice for voltage regulation, reference and protection in various small and medium-power electronic devices.