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

Nexperia USA Inc. BZX84-A2V4,215

Name: BZX84-A2V4,215
Brand: Nexperia USA Inc.
SKU: BZX84-A2V4,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-A2V4,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-A2V4,215.pdf

Description:: DIODE ZENER 2.4V 250MW TO236AB

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Product details

Overview

BZX84-A2V4,215 from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 2.4 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and 40 W non-repetitive peak reverse power. It serves as a precision reference or overvoltage clamp in low-power analog supply rails, microcontroller reset circuits, and sensor biasing networks.

For engineers reviewing the BZX84-A2V4,215 datasheet, BZX84-A2V4,215 pinout, BZX84-A2V4,215 application, or BZX84-A2V4,215 equivalent, this page delivers verified Zener parameters, thermal resistance values, differential resistance (600 Ω max), temperature coefficient (−3.5 to 0.0 mV/K), and cathode/anode terminal mapping - all confirmed from Nexperia's Rev. 7 product data sheet.

Technical Context

This device operates in reverse-bias breakdown mode with a tightly controlled 2.37 V to 2.43 V working voltage range at I_Z = 5 mA. Its differential resistance of ≤600 Ω ensures stable regulation under load variation, while the −3.5 to 0.0 mV/K temperature coefficient enables predictable drift behavior across −55 °C to +150 °C ambient conditions.

Designed for surface-mount assembly on FR4 PCBs with single-sided 70 µm copper, it exhibits R_th(j-a) = 500 K/W and R_th(j-sp) = 330 K/W, supporting thermal management in space-constrained consumer and industrial modules where discrete voltage referencing is required without active circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Breakdown Voltage (V_Z)	2.37 V to 2.43 V at I_Z = 5 mA - defines precise clamping threshold for 2.4 V rail stabilization
Tolerance	±1 % - enables high-accuracy voltage reference without trimming in production
Total Power Dissipation (P_tot)	250 mW at T_amb ≤ 25 °C - sets maximum continuous DC power handling on standard PCB
Non-repetitive Peak Reverse Power (P_ZSM)	40 W for t_p = 100 μs - supports transient surge suppression in ESD-prone interfaces
Differential Resistance (r_dif)	≤600 Ω at I_Z = 5 mA - determines output impedance and regulation stiffness under current change
Temperature Coefficient (S_Z)	−3.5 to 0.0 mV/K - quantifies V_Z drift per degree Celsius, critical for temperature-stable references
Reverse Current (I_R)	≤100 μA at V_R = 1 V - specifies leakage level below breakdown, affecting quiescent power in always-on circuits

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 1.3 mm × 2.9 mm footprint, 1.1 mm height, and gull-wing lead form compatible with reflow and wave soldering per Nexperia's recommended land patterns.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in Zener regulation configuration
2	Not Connected (n.c.)	Internally unconnected; no electrical function - must remain floating or grounded per layout best practice
3	Cathode (K)	Reverse-biased terminal; connects to higher-potential node and serves as output reference point

Key Features

Feature	Design Value
Low-power Zener regulation	250 mW P_tot enables use in battery-powered and energy-harvesting systems without thermal derating
±1 % voltage tolerance	Eliminates need for post-assembly calibration in precision 2.4 V reference applications
Non-repetitive 40 W surge rating	Provides robustness against short-duration transients in I/O protection and reset circuitry
SOT23 package compatibility	Supports automated pick-and-place and high-density PCB layouts typical in portable electronics
−55 °C to +150 °C operating range	Validates use in extended-temperature industrial and automotive-adjacent environments

Applications

Microcontroller Reset Circuit

Sensor Bias Reference

Use Scenario: Generating a clean, temperature-stable 2.4 V threshold for brown-out detection in ARM Cortex-M0+ MCUs.

IC Role / Device Role / Timing Role: Zener diode acts as passive voltage reference feeding comparator input; no timing function involved.

Use Value: ±1 % tolerance ensures reset assertion occurs within 2.37–2.43 V window, preventing premature or delayed resets during supply ramp-up.

Use Scenario: Providing stable excitation voltage to resistive temperature detector (RTD) bridges in HVAC control modules.

IC Role / Device Role / Timing Role: Passive voltage reference source; supplies fixed bias independent of supply ripple.

Use Value: 600 Ω differential resistance minimizes loading error on bridge output, preserving measurement linearity across 0–100 °C.

USB Port Overvoltage Clamp

Low-Power Analog Supply Rail

Use Scenario: Clamping induced surges on USB VBUS lines in portable accessories exposed to hot-plug events.

IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VBUS and ground; responds in nanoseconds.

Use Value: 40 W non-repetitive peak power rating absorbs 100 μs surges up to 6.0 A without failure, meeting IEC 61000-4-5 Level 2.

Use Scenario: Regulating 3.3 V LDO output down to 2.4 V for op-amp biasing in audio preamplifier stages.

IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage across load; no switching or timing elements.

Use Value: −3.5 to 0.0 mV/K temperature coefficient limits V_Z drift to <±0.15 V over −40 to +85 °C, preserving gain stability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5222BS	2.4 V nominal, ±5 % tolerance, 225 mW P_tot, SOT23 package	Higher tolerance and lower power limit reduce accuracy and surge margin in precision reset circuits	Select when cost sensitivity outweighs ±1 % regulation requirement and 40 W surge immunity is unnecessary
Vishay BZX84-C2V4	2.4 V nominal, ±5 % tolerance, same SOT23 package and 250 mW rating	Loose tolerance increases risk of out-of-spec reset thresholds in tight-margin MCU designs	Choose only for non-critical biasing where 2.2–2.6 V variation is acceptable and cost is primary driver

Compared with MMBZ5222BS and BZX84-C2V4, the BZX84-A2V4,215 delivers superior voltage accuracy and transient robustness - essential for reliable reset signaling and sensor excitation - while maintaining identical board-level fit and reflow compatibility.

Availability

BZX84-A2V4,215 is available at Aetrix Electronics and suitable for microcontroller reset circuits, sensor bias references, USB overvoltage clamps, and low-power analog supply rails requiring stable component supply and guaranteed traceability.

Supply support for BZX84-A2V4,215 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 logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.

The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered specifically for low-power voltage reference and clamping in space-constrained, cost-sensitive consumer and industrial electronics.

FAQ

What is the maximum continuous forward current for BZX84-A2V4,215?

The absolute maximum forward current is 200 mA per Nexperia's limiting values table. However, sustained forward conduction is not intended operation - this diode is designed for reverse-bias Zener regulation. Forward voltage remains ≤0.9 V at 10 mA, but prolonged forward bias above 100 mA risks thermal runaway due to lack of thermal shutdown circuitry.

Can BZX84-A2V4,215 replace BZX84-B2V4 in an existing design?

Yes, but only if the ±2 % tolerance of the B version was already sufficient for system performance. The A version offers tighter 2.37–2.43 V range versus B's 2.35–2.45 V, improving accuracy by ±0.02 V. No package or pinout changes are needed - both use identical SOT23 footprints and share the same thermal characteristics and surge ratings.

How does the n.c. pin (Pin 2) affect PCB layout?

Pin 2 is internally unconnected and must not be soldered to any net. In layout, it should be left as a floating pad or optionally tied to ground via a keep-out zone to prevent accidental shorts. Nexperia's recommended footprint shows no solder mask opening or copper pour under Pin 2, ensuring mechanical stability without electrical coupling.

Is BZX84-A2V4,215 qualified for automotive applications?

No - this part is explicitly marked as non-automotive qualified in Nexperia's revision history. It lacks AEC-Q101 stress testing and automotive-grade process controls. For automotive use, select Nexperia's BZX84-Q series (e.g., BZX84-Q2V4), which undergoes extended temperature cycling, humidity testing, and failure analysis per automotive reliability standards.

BZX84-A2V4,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZX84

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:: ±1%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 50 µA @ 1 V

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

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX84-A2V4,215 FAQ

1.How can I place an order for BZX84-A2V4,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-A2V4,215 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 BZX84-A2V4,215 reliable?

The price and inventory of BZX84-A2V4,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-A2V4,215 is usually 5 days.

3.What payment methods are accepted for BZX84-A2V4,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-A2V4,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-A2V4,215?

BZX84-A2V4,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-A2V4,215 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 BZX84-A2V4,215?

For technical support, including BZX84-A2V4,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-A2V4,215 requirements.

6.How does Aetrix verify that BZX84-A2V4,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-A2V4,215 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 BZX84-A2V4,215 meets industry standards.

7.What is the process for return or replacement of BZX84-A2V4,215?

All BZX84-A2V4,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-A2V4,215, 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 BZX84-A2V4,215 part is unused and in its original packaging.

Return procedure for BZX84-A2V4,215:

1.Submit a request within 90 days.

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

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