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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZX8450-C2V2-QVL

Name: BZX8450-C2V2-QVL
Brand: Nexperia USA Inc.
SKU: BZX8450-C2V2-QVL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX8450-C2V2-QVL

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX8450-C2V2-QVL.pdf

Description:: DIODE ZENER 2.2V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:6,229

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Product details

Overview

BZX8450-C2V2-Q from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, rated for 2.2 V nominal regulation at 50 µA test current, with ±5 % tolerance, 250 mW total power dissipation, and AEC-Q101 qualification for automotive use.

For engineers reviewing the BZX8450-C2V2-Q datasheet, BZX8450-C2V2-Q pinout, BZX8450-C2V2-Q application, or BZX8450-C2V2-Q equivalent, this device serves as a precision low-bias voltage reference in battery-powered sensor nodes, ECU voltage monitoring rails, and automotive infotainment power sequencing circuits.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified working voltage of 2.2 V (min 2.09 V, max 2.31 V) at I_Z = 50 µA, exhibiting low differential resistance (≤600 Ω) and negative temperature coefficient (−3.5 mV/K), enabling stable low-power biasing under ambient variations.

Its intentional minor leakage current optimization per AN90031 supports fast switching transients and reduced noise in signal conditioning paths, while its 210 pF capacitance at 0 V and 1 MHz makes it suitable for low-frequency regulation without high-speed signal coupling concerns.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	2.2 V at I_Z = 50 µA - defines precise low-voltage reference point for microcontroller reset or ADC reference scaling
Voltage Tolerance	±5 % - ensures predictable clamping within 2.09 V to 2.31 V across production lots
Max Power Dissipation	250 mW at T_amb ≤ 25 °C - limits thermal rise on FR4 PCB with standard footprint
Differential Resistance	≤600 Ω at I_Z = 50 µA - maintains regulation stability under small load current variations
Forward Voltage	≤0.9 V at I_F = 10 mA - enables reliable forward conduction for polarity protection or dual-mode biasing
Junction Temperature	−55 °C to +150 °C - supports operation in under-hood automotive environments
Reverse Capacitance	210 pF at V_R = 0 V, f = 1 MHz - avoids signal integrity issues in sub-10 MHz analog monitoring paths

Pinout & Package

SOT23 plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, FR4-compatible footprint.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Connects to lower-potential node; reverse-biased during regulation to establish reference voltage at cathode
2	Not Connected (n.c.)	Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress
3	Cathode (K)	Output reference node; supplies regulated 2.2 V to load when reverse-biased above breakdown threshold

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per discrete semiconductor stress test standard
Low test current operation	Specified at 50 µA - enables direct use in ultra-low-power sensor wake-up circuits without additional bias resistors
Optimized leakage profile	Intentional minor IR increase per AN90031 - reduces switching noise and improves transient response in power rail monitors
Two tolerance series	±2 % (B-series) and ±5 % (C-series) - allows cost/performance trade-off in volume automotive designs

Applications

Automotive ECU Voltage Monitoring

Portable Sensor Node Reference

Use Scenario: Real-time monitoring of 3.3 V supply rail in engine control unit to trigger fault logging if voltage drops below threshold.

IC Role / Device Role / Timing Role: Zener diode provides stable 2.2 V reference to comparator input, enabling accurate undervoltage detection independent of MCU VDD fluctuations.

Use Value: Enables deterministic fault response with <10 µs latency due to low capacitance and optimized leakage behavior.

Use Scenario: Biasing a low-power temperature sensor IC in a wireless tire pressure monitor powered by CR2032 coin cell.

IC Role / Device Role / Timing Role: Functions as shunt regulator to maintain constant 2.2 V supply to sensor analog front-end during battery discharge from 3.0 V to 2.4 V.

Use Value: Extends usable battery life by >15 % versus higher-current references, validated at 50 µA operating point.

Infotainment System Power Sequencing

Industrial CAN Transceiver Biasing

Use Scenario: Generating a delayed enable signal for audio amplifier IC after main 5 V rail stabilizes in head unit boot sequence.

IC Role / Device Role / Timing Role: Zener diode clamps RC-generated timing voltage to 2.2 V, defining precise turn-on threshold for downstream MOSFET gate driver.

Use Value: Achieves ±2 % timing accuracy over −40 °C to +105 °C due to matched temperature coefficient and low r_diff.

Use Scenario: Providing isolated 2.2 V bias to CAN transceiver's VIO pin in industrial gateway with mixed 3.3 V/5 V domains.

IC Role / Device Role / Timing Role: Acts as level-shifting clamp to ensure transceiver logic interface remains within absolute maximum ratings during bus fault conditions.

Use Value: Prevents latch-up during ±40 V common-mode surges by limiting VIO excursion to 2.31 V max, verified per ISO 11898-2.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C2V2,115	Same SOT23 package and 2.2 V rating but ±5 % tolerance only; no AEC-Q101 qualification; higher r_diff (700 Ω typical)	Limited to commercial-grade consumer electronics; not approved for automotive under-hood use	Select when cost sensitivity outweighs automotive qualification and tighter regulation stability requirements
MMSZ4678T1G	2.2 V Zener in SOD-123; ±5 % tolerance; 500 mW P_tot; 1000 Ω r_diff; no AEC-Q101	Higher power handling but larger footprint and inferior low-current regulation performance	Choose only if board space allows SOD-123 and thermal margin exceeds 250 mW requirement

Compared with BZX8450-C2V2-Q, the BZX84-C2V2,115 lacks automotive qualification and exhibits higher dynamic impedance, while MMSZ4678T1G trades compactness and low-current precision for raw power capacity-neither matches the combined AEC-Q101 compliance, 50 µA specification, and 210 pF capacitance of the BZX8450-C2V2-Q in space-constrained automotive modules.

Availability

BZX8450-C2V2-Q is available at Aetrix Electronics and suitable for automotive ECU monitoring, portable sensor node reference, and infotainment power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BZX8450-C2V2-Q 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

The BZX8450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current voltage regulation in automotive subsystems where precision, low bias, and robust thermal performance are critical.

FAQ

What is the maximum reverse voltage this diode can withstand before breakdown?

The BZX8450-C2V2-Q has a nominal Zener voltage of 2.2 V, with guaranteed breakdown occurring between 2.09 V and 2.31 V at 50 µA test current. It is not rated for sustained operation above 2.31 V in regulation mode; exceeding this risks thermal runaway if power dissipation exceeds 250 mW.

Can this Zener diode be used in forward conduction mode?

Yes - its forward voltage is specified at ≤0.9 V at 10 mA, making it suitable for polarity protection or dual-role biasing. However, forward conduction is not its primary function; design must ensure reverse-bias operation dominates during regulation to maintain voltage accuracy and thermal stability.

Is pin 2 truly unconnected, or does it serve a mechanical or thermal role?

Pin 2 is electrically unconnected (n.c.) per Nexperia's official pinning diagram and internal construction. It serves no electrical function and must remain unconnected on the PCB; it does not provide thermal relief or mechanical anchoring - thermal path is exclusively through pins 1 and 3 to the PCB copper.

How does the "C" suffix differ from "B" in the BZX8450-Q series?

The "C" suffix denotes ±5 % voltage tolerance (e.g., 2.09–2.31 V for 2.2 V nominal), while "B" indicates ±2 % (2.15–2.25 V). Both share identical package, power rating, and AEC-Q101 qualification; the C-series trades tighter regulation for broader process yield and lower cost in high-volume automotive applications.

BZX8450-C2V2-QVL Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZX8450-Q

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 2.2 V

Tolerance:: ±5%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 4 µA @ 1 V

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

Operating Temperature:: -55°C ~ 150°C (TA)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX8450-C2V2-QVL FAQ

1.How can I place an order for BZX8450-C2V2-QVL through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX8450-C2V2-QVL 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 BZX8450-C2V2-QVL reliable?

The price and inventory of BZX8450-C2V2-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C2V2-QVL is usually 5 days.

3.What payment methods are accepted for BZX8450-C2V2-QVL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C2V2-QVL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX8450-C2V2-QVL?

BZX8450-C2V2-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX8450-C2V2-QVL 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 BZX8450-C2V2-QVL?

For technical support, including BZX8450-C2V2-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C2V2-QVL requirements.

6.How does Aetrix verify that BZX8450-C2V2-QVL is sourced from the original manufacturer or authorized distributors?

All BZX8450-C2V2-QVL 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 BZX8450-C2V2-QVL meets industry standards.

7.What is the process for return or replacement of BZX8450-C2V2-QVL?

All BZX8450-C2V2-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C2V2-QVL, 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 BZX8450-C2V2-QVL part is unused and in its original packaging.

Return procedure for BZX8450-C2V2-QVL:

1.Submit a request within 90 days.

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

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