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

Nexperia USA Inc. BZX8450-C2V4VL

Name: BZX8450-C2V4VL
Brand: Nexperia USA Inc.
SKU: BZX8450-C2V4VL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX8450-C2V4VL

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX8450-C2V4VL.pdf

Description:: DIODE ZENER 2.4V 250MW TO236AB

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Product details

Overview

BZX8450-C2V4VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and biasing in ultra-low-power circuits. It delivers 2.4 V nominal regulation at 50 µA test current, with ±5 % tolerance, 200 mW total power dissipation, and 200 Ω differential resistance at 5 mA - enabling stable operation in portable battery-powered sensors and microcontroller reset circuits.

For engineers reviewing the BZX8450-C2V4VL datasheet, BZX8450-C2V4VL pinout, BZX8450-C2V4VL application, or BZX8450-C2V4VL equivalent, key selection criteria include its low 50 µA regulation test current, intentional leakage optimization for noise reduction (per AN90031), SOT23 footprint compatibility, and thermal resistance of 330 K/W to solder point - critical for space-constrained, thermally sensitive designs.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified working voltage of 2.28 V to 2.52 V at I_Z = 50 µA, exhibiting a negative temperature coefficient of −3.5 mV/K. Its differential resistance remains ≤200 Ω up to 5 mA, ensuring minimal voltage deviation under varying load conditions.

The device features a not-connected (n.c.) terminal (Pin 2) to reduce parasitic capacitance and improve high-frequency stability. Its optimized leakage profile supports fast switching transients while suppressing supply noise in analog front-ends and LDO feedback paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	2.4 V (2.28–2.52 V range at 50 µA; enables precise low-voltage biasing)
Tolerance	±5 % (C-series grade; balances cost and accuracy for non-critical references)
Test Current	50 µA (ultra-low bias requirement; extends battery life in always-on sensor nodes)
Differential Resistance	≤200 Ω at 5 mA (low dynamic impedance ensures <5 mV output shift per 1 mA load change)
Max Power Dissipation	250 mW at T_amb ≤25 °C (supports continuous operation on standard FR4 PCB without heatsinking)
Reverse Leakage	≤2 µA at V_R = 1 V (intentionally elevated vs. B-series for improved noise performance)
Junction Temperature	−55 °C to +150 °C (enables deployment in industrial ambient environments)

Pinout & Package

Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch).

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Connected to lower-potential node; reverse-biased during regulation
2	Not Connected (n.c.)	Internally unconnected; electrically isolated to minimize stray capacitance
3	Cathode (K)	Connected to higher-potential node; defines regulated output reference point

Key Features

Feature	Design Value
Low test current operation	Specified at 50 µA - reduces quiescent current in battery-backed real-time clocks and IoT wake-up circuits
Optimized leakage profile	Intentional minor rise in IR supports faster transient response and lower broadband noise in LDO feedback networks
SOT23 footprint compatibility	Standard 3-terminal, 1.9 mm pitch layout - enables drop-in replacement in existing compact PCB designs
Thermal resistance to solder point	330 K/W - improves power handling reliability when mounted on copper pours or thermal pads
Wide operating temperature range	−55 °C to +150 °C - suitable for under-hood automotive modules and industrial control enclosures

Applications

Microcontroller Reset Circuit

Portable Sensor Biasing

Use Scenario: Providing clean, stable reset threshold for ARM Cortex-M0+ MCUs in wearable health monitors.

IC Role / Device Role / Timing Role: Zener diode establishes precise 2.4 V reset voltage for external supervisor ICs or internal brown-out detection.

Use Value: Low 50 µA test current minimizes battery drain during sleep mode; ±5 % tolerance meets typical reset window requirements (2.2–2.6 V).

Use Scenario: Supplying reference voltage to MEMS accelerometer signal conditioning circuitry in wireless vibration sensors.

IC Role / Device Role / Timing Role: Acts as low-noise voltage reference for op-amp biasing and ADC input scaling.

Use Value: Optimized leakage profile reduces 1/f noise; 200 Ω r_diff maintains reference stability across 0–100 µA load variations.

LDO Feedback Divider

Low-Power RTC Backup

Use Scenario: Setting output voltage of adjustable 3.3 V LDOs in battery-powered edge AI inference nodes.

IC Role / Device Role / Timing Role: Replaces one resistor in feedback network to create programmable reference point.

Use Value: SOT23 size allows integration near LDO pins; −3.5 mV/K tempco compensates for LDO's positive drift.

Use Scenario: Maintaining accurate timekeeping during main power loss in smart meter RTC modules.

IC Role / Device Role / Timing Role: Provides stable 2.4 V reference for crystal oscillator bias and backup SRAM retention.

Use Value: 250 mW rating supports sustained operation from coin-cell backup; 150 °C max junction temperature accommodates sealed enclosure heating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5222BS	2.5 V nominal, ±5 %, 200 mW, SOT23, but rated at 20 mA test current - higher dynamic impedance (≤700 Ω)	Less suitable for sub-100 µA bias circuits due to higher minimum operating current	Select when higher power margin is needed and 20 mA test condition aligns with system bias design
Vishay BZX84-C2V4	Identical 2.4 V/±5 %/SOT23 spec, but lacks intentional leakage optimization (AN90031); r_diff = 220 Ω at 5 mA	Higher noise floor in sensitive analog signal chains; no documented fast-switching enhancement	Prefer for cost-sensitive, non-noise-critical applications where legacy compatibility is required

Compared with MMBZ5222BS and BZX84-C2V4, BZX8450-C2V4VL offers superior low-current regulation fidelity and noise-optimized leakage behavior - making it the preferred choice for battery-constrained, high-fidelity analog subsystems where 50 µA operation and transient response matter.

Availability

BZX8450-C2V4VL is available at Aetrix Electronics and suitable for portable sensor nodes, microcontroller reset circuits, and LDO feedback networks requiring stable component supply with guaranteed long-term traceability and lifecycle continuity.

Supply support for BZX8450-C2V4VL 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 discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

BZX8450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for ultra-low-power voltage reference and biasing in battery-operated and thermally constrained systems.

FAQ

What is the maximum reverse current at 1 V for BZX8450-C2V4VL?

The maximum reverse current (I_R) is 2 µA at V_R = 1 V and T_j = 25 °C. This value is intentionally elevated relative to B-series variants to improve switching speed and reduce broadband noise, as documented in application note AN90031.

Can BZX8450-C2V4VL be used in place of BZX84-C2V4 in existing designs?

Yes - it shares identical pinout, voltage rating, tolerance, and package. However, BZX8450-C2V4VL exhibits optimized leakage for faster transients and lower noise. No layout changes are needed, but verify noise sensitivity and transient response in final system validation.

What is the thermal resistance from junction to solder point (R_th(j-sp))?

R_th(j-sp) is 330 K/W, measured at the cathode tab solder point under standard FR4 PCB mounting (single-sided 70 µm copper, tin-plated). This value enables accurate thermal modeling when the cathode is connected to a thermal pad or copper pour.

Is the n.c. pin internally bonded or floating?

Pin 2 is not connected - it is electrically isolated with no internal bond wire or die connection. This design eliminates parasitic capacitance coupling and ensures predictable high-frequency behavior in RF-adjacent or fast-switching applications.

BZX8450-C2V4VL Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZX8450

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 2.4 V

Tolerance:: ±5%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 2 µA @ 1 V

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

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX8450-C2V4VL FAQ

1.How can I place an order for BZX8450-C2V4VL through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX8450-C2V4VL 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-C2V4VL reliable?

The price and inventory of BZX8450-C2V4VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C2V4VL is usually 5 days.

3.What payment methods are accepted for BZX8450-C2V4VL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C2V4VL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX8450-C2V4VL?

BZX8450-C2V4VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX8450-C2V4VL 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-C2V4VL?

For technical support, including BZX8450-C2V4VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C2V4VL requirements.

6.How does Aetrix verify that BZX8450-C2V4VL is sourced from the original manufacturer or authorized distributors?

All BZX8450-C2V4VL 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-C2V4VL meets industry standards.

7.What is the process for return or replacement of BZX8450-C2V4VL?

All BZX8450-C2V4VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C2V4VL, 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-C2V4VL part is unused and in its original packaging.

Return procedure for BZX8450-C2V4VL:

1.Submit a request within 90 days.

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

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