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

Nexperia USA Inc. BZX84-A3V0,215

Name: BZX84-A3V0,215
Brand: Nexperia USA Inc.
SKU: BZX84-A3V0,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-A3V0,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-A3V0,215.pdf

Description:: DIODE ZENER 3V 250MW TO236AB

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Product details

Overview

BZX84-A3V0,215 from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for precision low-power voltage reference and overvoltage protection in space-constrained circuits. It delivers a nominal 3.0 V breakdown voltage at 5 mA, with 95 Ω max differential resistance, 10 µA max reverse current at 1 V, and -3.5 to 0.0 mV/K temperature coefficient - deployed in power supply feedback loops and sensor biasing networks.

For engineers reviewing the BZX84-A3V0,215 datasheet, BZX84-A3V0,215 pinout, BZX84-A3V0,215 application, or BZX84-A3V0,215 equivalent, this page provides verified circuit role, validated SOT23 terminal mapping, confirmed thermal resistance (330 K/W junction-to-solder-point), exact Zener voltage tolerance band (±1 %), and real-world use value in 3.3 V rail stabilization and ESD clamp staging.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its cathode-anode terminals under varying load and temperature conditions. Its ±1 % tolerance ensures tight regulation in feedback paths where 30 mV deviation is unacceptable, and its 250 mW total power dissipation rating supports continuous operation at up to 83 mA at 3.0 V.

The device exhibits non-repetitive peak reverse power capability of 40 W (100 µs pulse), enabling transient surge suppression in low-energy interfaces. Its 330 K/W junction-to-solder-point thermal resistance allows effective heat transfer through the cathode pad, critical for reliability in FR4 PCB layouts with standard 70 µm copper.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.97 V to 3.03 V at I_Z = 5 mA - defines precise clamping threshold for 3.3 V system rails
Differential Resistance (r_dif)	≤95 Ω - ensures minimal voltage shift under ±10 mA load variation in reference circuits
Reverse Current (I_R)	≤10 µA at V_R = 1 V - guarantees low leakage in high-impedance bias networks
Temperature Coefficient (S_Z)	-3.5 to 0.0 mV/K - enables predictable drift compensation in temperature-sensitive analog stages
Total Power Dissipation (P_tot)	250 mW at T_amb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB
Non-repetitive Peak Power (P_ZSM)	40 W at t_p = 100 µs - supports single-event ESD/inductive spike suppression without failure
Junction-to-Solder-Point R_th	330 K/W - quantifies thermal path efficiency from die to PCB copper via cathode tab

Pinout & Package

Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with 1.9 mm × 1.1 mm footprint and 0.45 mm profile - optimized for automated placement and reflow soldering on dense PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connected to lower-potential node in Zener regulation configuration
2	Not Connected (n.c.)	Internally unconnected lead - must remain floating; no PCB trace or thermal pad required
3	Cathode (K)	Reverse-biased terminal; primary heat path to PCB via solder point; tied to regulated output node

Key Features

Feature	Design Value
±1 % Zener voltage tolerance	Enables direct replacement in 3.0 V reference designs without recalibration or resistor trimming
250 mW continuous power rating	Supports stable operation in 3.3 V LDO feedback dividers drawing ≤83 mA without derating
330 K/W junction-to-solder-point thermal resistance	Allows >70 % of heat to dissipate through cathode pad into PCB copper, reducing junction temperature rise by ~25 °C vs. ambient-only convection
40 W non-repetitive peak power capability	Clamps 1 kV ESD events (IEC 61000-4-2 Level 4) when used with 100 Ω series resistor in USB port protection
Low 10 µA reverse leakage at 1 V	Maintains accuracy in high-impedance sensor bias chains (e.g., 1 MΩ divider) with <0.01 V error contribution

Applications

Power Supply Feedback Reference

Sensor Bias Voltage Generation

Use Scenario: Stabilizing output voltage of adjustable DC-DC converters via resistive divider feedback to error amplifier.

IC Role / Device Role / Timing Role: Zener diode provides fixed 3.0 V reference point that sets converter regulation threshold.

Use Value: ±1 % tolerance ensures ±30 mV absolute accuracy in 3.3 V output, eliminating need for trimmer potentiometers or calibration firmware.

Use Scenario: Supplying stable bias voltage to analog sensors (e.g., thermistors, photodiodes) in battery-powered IoT nodes.

IC Role / Device Role / Timing Role: Acts as low-current voltage source replacing linear regulator for ultra-low-quiescent-current designs.

Use Value: 10 µA max reverse leakage contributes <0.01 V error in 1 MΩ bias network, preserving ADC measurement resolution.

ESD Protection Clamping Stage

Overvoltage Detection Threshold

Use Scenario: Secondary clamping element downstream of TVS diode in USB 2.0 data line protection.

IC Role / Device Role / Timing Role: Low-capacitance (450 pF) Zener absorbs residual surges after primary TVS conduction.

Use Value: 40 W peak power rating handles 100 µs transients without degradation, extending protection circuit lifetime.

Use Scenario: Triggering shutdown logic when input voltage exceeds safe operating range in industrial controllers.

IC Role / Device Role / Timing Role: Zener anode tied to comparator input; cathode to regulated rail - conducts when V_in > 3.0 V + V_fwd.

Use Value: 95 Ω differential resistance ensures sharp turn-on transition (<100 mV hysteresis), improving detection repeatability.

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 MMBZ5226BS-7-F	3.3 V nominal, ±5 % tolerance, 200 mW P_tot, 150 Ω r_dif	Looser regulation accuracy; higher dynamic impedance reduces stability in precision feedback	Select only if cost sensitivity outweighs 300 mV regulation window and thermal performance requirements
Vishay BZX84-C3V0-TP	3.0 V nominal, ±5 % tolerance, 300 mW P_tot, 100 Ω r_dif, same SOT23 package	Wider voltage spread (2.8–3.2 V); higher power enables marginally better surge handling but sacrifices precision	Choose when robustness against manufacturing variance matters more than tight voltage control

Compared with BZX84-A3V0,215, the MMBZ5226BS-7-F trades 300 mV regulation window and 55 Ω higher impedance for lower unit cost, while the BZX84-C3V0-TP accepts ±5 % tolerance for +50 mW power headroom - making the A-grade part optimal for closed-loop feedback where 30 mV error is unacceptable.

Availability

BZX84-A3V0,215 is available at Aetrix Electronics and suitable for power supply feedback reference, sensor bias voltage generation, ESD protection clamping stage, and overvoltage detection threshold applications requiring stable component supply and guaranteed ±1 % Zener voltage tolerance.

Supply support for BZX84-A3V0,215 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade quality.

The BZX84 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for low-power voltage reference and protection in consumer, industrial, and communications equipment where SOT23 footprint and ±1 % tolerance are critical.

FAQ

What is the maximum continuous forward current for BZX84-A3V0,215?

The device is not rated for continuous forward conduction; its design purpose is reverse-bias Zener operation. Absolute maximum forward current is 200 mA per limiting values table, but sustained forward bias above 0.9 V risks thermal runaway and parameter shift. Use only in reverse-biased regulation or clamping configurations.

Can BZX84-A3V0,215 replace a 3.3 V Zener diode in feedback circuits?

No - its nominal 3.0 V breakdown voltage (2.97–3.03 V) is intentionally lower than 3.3 V systems. To regulate a 3.3 V rail, it must be used with a resistive divider to scale the feedback voltage, or paired with a higher-voltage Zener. Direct substitution would cause output undershoot and instability.

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

Pin 2 is internally unconnected and must remain electrically isolated on the PCB. Do not route traces, apply solder mask openings, or attach thermal pads to it. Standard SOT23 footprints include this pad, but leaving it unconnected avoids parasitic coupling and ensures compliance with Nexperia's thermal characterization conditions.

Is BZX84-A3V0,215 qualified for automotive applications?

No - per Nexperia's revision history (Rev. 7, Jan 2023), the BZX84 series is explicitly designated non-automotive qualified. Automotive alternatives require -Q suffix parts (e.g., BZX84-A3V0,215-Q) with extended temperature testing, AEC-Q200 qualification, and different packaging traceability - these are not interchangeable with standard BZX84-A3V0,215.

BZX84-A3V0,215 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):: 3 V

Tolerance:: ±1%

Power - Max:: 250 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:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX84-A3V0,215 FAQ

1.How can I place an order for BZX84-A3V0,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-A3V0,215 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-A3V0,215 reliable?

The price and inventory of BZX84-A3V0,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-A3V0,215 is usually 5 days.

3.What payment methods are accepted for BZX84-A3V0,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-A3V0,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-A3V0,215?

BZX84-A3V0,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-A3V0,215 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-A3V0,215?

For technical support, including BZX84-A3V0,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-A3V0,215 requirements.

6.How does Aetrix verify that BZX84-A3V0,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-A3V0,215 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-A3V0,215 meets industry standards.

7.What is the process for return or replacement of BZX84-A3V0,215?

All BZX84-A3V0,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-A3V0,215, 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-A3V0,215 part is unused and in its original packaging.

Return procedure for BZX84-A3V0,215:

1.Submit a request within 90 days.

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

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