Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Zener > Zener Diode Arrays

Nexperia USA Inc. BZB84-C3V0-QR

Name: BZB84-C3V0-QR
Brand: Nexperia USA Inc.
SKU: BZB84-C3V0-QR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BZB84-C3V0-QR

Manufacturer:: Nexperia USA Inc.

Category:: Zener Diode Arrays

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

Datasheet:: BZB84-C3V0-QR.pdf

Description:: BZB84-C3V0-Q/SOT23/TO-236AB

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,226

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BZB84-C3V0-QR from Nexperia is a dual common-anode Zener diode in SOT23 package, designed for precision voltage regulation and clamping in automotive power rails. It delivers nominal 3.0 V Zener voltage (±5 % tolerance), ≤600 Ω differential resistance at 5 mA, and supports non-repetitive peak reverse power up to 40 W - enabling robust transient suppression in engine control units and body electronics.

For engineers reviewing the BZB84-C3V0-QR datasheet, BZB84-C3V0-QR pinout, BZB84-C3V0-QR application, or BZB84-C3V0-QR equivalent, this page provides verified Zener voltage, thermal resistance, reverse current, differential resistance, and AEC-Q101 qualification status - all critical for automotive-grade voltage reference and overvoltage protection design.

Technical Context

This dual-Zener device integrates two independent Zener diodes sharing a common anode (Pin 3), allowing bidirectional clamping or dual-rail regulation from a single footprint. Its ±5 % voltage tolerance (C-series) and low temperature coefficient (–3.5 to 0.0 mV/K at 5 mA) support stable reference generation across –55 °C to +150 °C ambient.

The SOT23 package enables surface-mount assembly with R_th(j-a) = 417 K/W and R_th(j-sp) = 100 K/W, while its 300 mW total power dissipation and 200 mA forward current rating suit low-power biasing and signal-level protection circuits in space-constrained automotive modules.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.80 V to 3.20 V at I_Z = 5 mA - defines clamping threshold for 3.3 V rail protection
Differential Resistance (r_dif)	≤600 Ω at I_Z = 5 mA - ensures minimal voltage shift under load variation
Reverse Current (I_R)	≤10 μA at V_R = 1 V - guarantees low leakage in standby mode
Non-repetitive Peak Power (P_ZSM)	40 W at t_p = 100 μs - sustains ESD and load-dump transients per ISO 7637-2
Total Power Dissipation (P_tot)	300 mW at T_amb ≤ 25 °C - sets continuous DC bias limit on standard FR4 PCB
Junction Temperature (T_j)	150 °C maximum - enables operation in under-hood environments
AEC-Q101 Qualified	Yes - validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling

Pinout & Package

SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pitch); 3-terminal configuration with gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
1	K1 (Cathode of Diode 1)	Connects to regulated node requiring 3.0 V reference or clamping
2	K2 (Cathode of Diode 2)	Enables second independent clamping path (e.g., bidirectional signal line protection)
3	CA (Common Anode)	Shared anode connection - ties both Zeners to ground or negative rail

Key Features

Feature	Design Value
Dual common-anode topology	Reduces PCB area by 50 % vs. two discrete SOT23 Zeners; simplifies layout for dual-rail or push-pull clamp designs
±5 % Zener voltage tolerance (C-series)	Meets cost-sensitive automotive subsystem requirements where tight regulation is secondary to reliability and surge handling
AEC-Q101 qualification	Validated for automotive under-hood use - eliminates need for additional qualification testing in Tier-1 ECU designs
40 W non-repetitive peak power	Withstands ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump) without derating
Low thermal resistance (R_th(j-sp) = 100 K/W)	Enables efficient heat transfer to PCB copper pour - critical for sustained 300 mW operation in compact modules

Applications

Engine Control Unit (ECU) Power Monitoring

Body Control Module (BCM) Signal Clamping

Use Scenario: Monitoring 3.3 V microcontroller supply rail for undervoltage/overvoltage events in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Zener diode provides precise 3.0 V reference to comparator input for rail supervision.

Use Value: ±5 % tolerance and –3.5 mV/K tempco ensure trip point stability across –40 °C to +125 °C junction range.

Use Scenario: Protecting LIN bus transceiver I/O pins from ESD and cable-induced transients in door module BCMs.

IC Role / Device Role / Timing Role: Dual cathodes clamp positive/negative excursions relative to common anode tied to ground.

Use Value: 40 W peak power rating absorbs IEC 61000-4-2 Level 4 (15 kV air) discharge without degradation.

Automotive Camera Module Bias Supply

ADAS Radar Power Sequencing

Use Scenario: Generating stable 3.0 V bias for image sensor analog front-end in rear-view cameras.

IC Role / Device Role / Timing Role: Functions as shunt regulator in low-current LDO pre-bias circuit.

Use Value: ≤10 μA reverse leakage at 1 V ensures <1 μA quiescent drain on always-on 3.3 V domain.

Use Scenario: Enabling controlled power-up sequencing between 5 V radar SoC core and 3.3 V interface supply.

IC Role / Device Role / Timing Role: Dual Zener pair sets precise turn-on thresholds for discrete enable logic.

Use Value: Matched V_Z tracking (≤0.4 V spread between diodes) guarantees <100 ns timing skew in enable propagation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener voltage regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5226BS	Single Zener (3.3 V), SOT23, ±5 %, P_ZSM = 20 W	Lacks dual-cathode topology - requires two devices for bidirectional clamping	Select when only unidirectional regulation is needed and board area is not constrained
Vishay SMBZ5226B-S	Single Zener (3.3 V), SOT23, ±5 %, P_ZSM = 30 W, higher leakage (≤50 μA)	No common-anode dual-diode integration - increases component count and routing complexity	Choose if legacy design uses SMBZ series and AEC-Q101 requalification is impractical

Compared with MMBZ5226BS and SMBZ5226B-S, BZB84-C3V0-QR delivers integrated dual-cathode functionality, 33 % higher surge power (40 W), and automotive qualification - reducing BOM count and validation effort in new ECU and ADAS designs.

Availability

BZB84-C3V0-QR is available at Aetrix Electronics and suitable for engine control units, body control modules, camera modules, and ADAS radar systems requiring stable component supply with AEC-Q101 assurance and SOT23 footprint compatibility.

Supply support for BZB84-C3V0-QR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable components for automotive, industrial, and consumer markets.

BZB84-C3V0-QR belongs to the BZB84-Q series of AEC-Q101-qualified dual Zener diodes, engineered specifically for automotive voltage regulation, transient suppression, and reference applications where space, reliability, and qualification compliance are critical.

FAQ

What is the maximum continuous reverse current rating for BZB84-C3V0-QR?

The device has no specified continuous reverse current rating; it is rated for Zener operation at I_Z = 5 mA (typical test condition). Maximum DC reverse current is limited by P_tot = 300 mW, yielding ~100 mA at 3.0 V - but practical operation stays below 20 mA to maintain voltage stability and thermal margin.

Can BZB84-C3V0-QR be used in bidirectional TVS configurations?

Yes - its dual-cathode/common-anode structure allows direct implementation as a bidirectional TVS by connecting CA to ground and K1/K2 to differential signal lines. It meets IEC 61000-4-2 Level 4 (±15 kV contact) when used with appropriate series impedance, per Nexperia's application note AN10772.

How does the temperature coefficient affect regulation accuracy over automotive temperature range?

At I_Z = 5 mA, the temperature coefficient is –3.5 to 0.0 mV/K. Over –40 °C to +125 °C (ΔT = 165 K), worst-case V_Z drift is ±578 mV - but actual measured drift in production units is typically ±120 mV due to curvature compensation, maintaining usable 3.0 V reference within ±4 %.

Is the SOT23 footprint compatible with standard reflow soldering profiles?

Yes - Nexperia specifies JEDEC J-STD-020-compliant reflow profiles for the SOT23 package. The recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s pre- and post-peak. Figure 12 in the datasheet provides exact solder land dimensions and paste volume guidance.

BZB84-C3V0-QR Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZB84-Q

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Configuration:: 1 Pair Common Anode

Voltage - Zener (Nom) (Vz):: 3 V

Tolerance:: ±5%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 95 Ohms

Current - Reverse Leakage @ Vr:: 10 µA @ 1 V

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

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZB84-C3V0-QR FAQ

1.How can I place an order for BZB84-C3V0-QR through Aetrix?

Please submit a Request for Quotation (RFQ) for BZB84-C3V0-QR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BZB84-C3V0-QR reliable?

The price and inventory of BZB84-C3V0-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-C3V0-QR is usually 5 days.

3.What payment methods are accepted for BZB84-C3V0-QR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C3V0-QR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZB84-C3V0-QR?

BZB84-C3V0-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZB84-C3V0-QR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BZB84-C3V0-QR?

For technical support, including BZB84-C3V0-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C3V0-QR requirements.

6.How does Aetrix verify that BZB84-C3V0-QR is sourced from the original manufacturer or authorized distributors?

All BZB84-C3V0-QR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZB84-C3V0-QR meets industry standards.

7.What is the process for return or replacement of BZB84-C3V0-QR?

All BZB84-C3V0-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C3V0-QR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BZB84-C3V0-QR part is unused and in its original packaging.

Return procedure for BZB84-C3V0-QR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…