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

Nexperia USA Inc. BZX84-A5V1,215

Name: BZX84-A5V1,215
Brand: Nexperia USA Inc.
SKU: BZX84-A5V1,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-A5V1,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-A5V1,215.pdf

Description:: DIODE ZENER 5.1V 250MW TO236AB

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Product details

Overview

BZX84-A5V1,215 from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for precision low-power voltage reference and regulation in space-constrained PCBs. It delivers 5.1 V nominal breakdown voltage at 5 mA test current, with 480 Ω max differential resistance, 2 μA max reverse leakage at 1 V, and -2.7 to +1.2 mV/K temperature coefficient - deployed in power supply feedback loops and analog sensor biasing.

For engineers reviewing the BZX84-A5V1,215 datasheet, BZX84-A5V1,215 pinout, BZX84-A5V1,215 application, or BZX84-A5V1,215 equivalent, this page provides verified electrical parameters, thermal behavior under FR4 mounting, SOT23 terminal mapping, real-world regulation use cases, and validated alternative parts for ±1 % Zener replacement in industrial and consumer power management circuits.

Technical Context

This device operates as a two-terminal shunt voltage regulator, maintaining stable output by conducting reverse current above its specified Zener voltage. Its ±1 % tolerance ensures tight regulation across production batches, while the 250 mW total power dissipation rating defines safe DC and pulsed operating limits on standard FR4 PCBs.

The 480 Ω maximum differential resistance at I_Z = 5 mA directly impacts load regulation error in feedback networks, and the -2.7 to +1.2 mV/K temperature coefficient determines drift magnitude over -55 °C to +150 °C ambient range - critical for precision analog references where thermal stability governs system accuracy.

Key Specifications

Parameter	Value and Actual Design Meaning
Breakdown Voltage V_Z	5.04 V to 5.16 V at I_Z = 5 mA - defines regulated output voltage window under nominal test conditions
Differential Resistance r_dif	≤480 Ω at I_Z = 5 mA - determines regulation sensitivity to load current changes
Reverse Leakage I_R	≤2 μA at V_R = 1 V - sets minimum quiescent current in standby mode
Total Power Dissipation P_tot	250 mW at T_amb ≤ 25 °C on FR4 PCB - establishes maximum continuous DC power handling
Non-repetitive Peak Power	40 W for t_p = 100 μs - supports transient surge suppression in clamp applications
Junction Temperature Range	-55 °C to +150 °C - enables operation in extended industrial environments
Thermal Resistance R_th(j-a)	500 K/W in free air - quantifies self-heating impact on voltage drift and reliability

Pinout & Package

Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with 1.9 mm × 1.1 mm footprint and 1.2 mm height - optimized for automated placement and reflow soldering on high-density PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in shunt regulation configuration
2	Not Connected (n.c.)	Internally unconnected lead - must remain floating; no PCB trace or pad required
3	Cathode (K)	Reverse-biased terminal; connects to regulated output node and current-limiting resistor

Key Features

Feature	Design Value
±1 % voltage tolerance	Enables precise feedback in switching regulator ICs without external trimming components
250 mW power rating	Supports regulation in low-current auxiliary rails (e.g., microcontroller V_REF, op-amp bias)
SOT23 package	Reduces board area by >60 % vs. DO-35; compatible with standard pick-and-place and reflow processes
150 °C max junction temperature	Permits operation in sealed enclosures or near heat-generating components without derating
40 W non-repetitive peak power	Provides transient overvoltage clamping capability in ESD-protected signal lines

Applications

Power Supply Feedback

Sensor Bias Reference

Use Scenario: Regulating output voltage of isolated flyback or buck converter via optocoupler feedback loop.

IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.1 V threshold to TL431 or optocoupler input LED.

Use Value: Tight ±1 % tolerance minimizes output voltage variation across line/load/temperature, improving overall PSU accuracy to ±2 %.

Use Scenario: Providing stable bias voltage to bridge-based pressure or temperature sensors.

IC Role / Device Role / Timing Role: Low-drift Zener reference replacing higher-cost bandgap ICs in analog front-end circuits.

Use Value: -2.7 to +1.2 mV/K tempco enables <±10 mV drift over -40 °C to +85 °C, meeting industrial sensor calibration requirements.

Overvoltage Clamp

Microcontroller Reset Circuit

Use Scenario: Protecting 5 V logic inputs from transient surges exceeding 5.5 V.

IC Role / Device Role / Timing Role: Fast-acting shunt clamp absorbing energy during ESD events or inductive kickback.

Use Value: 40 W non-repetitive peak power handles 100 μs transients up to 6.5 V without degradation, preserving downstream IC integrity.

Use Scenario: Generating clean reset signal for ARM Cortex-M0+ MCU during brown-out conditions.

IC Role / Device Role / Timing Role: Threshold detector triggering RC-based reset generator when supply drops below 4.7 V.

Use Value: 2 μA max reverse leakage at 1 V ensures minimal current draw in battery-powered sleep modes, extending shelf life.

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	Same 5.1 V nominal, ±5 % tolerance, 200 mW P_tot, SOT23 package	Higher voltage tolerance relaxes BOM control but increases output variation in closed-loop systems	Select when cost sensitivity outweighs regulation precision and thermal drift requirements
Vishay BZX84-C5V1	Same 5.1 V nominal, ±5 % tolerance, 250 mW P_tot, identical SOT23 pinout	Looser tolerance increases risk of out-of-spec output in feedback paths requiring tight DC accuracy	Choose only for non-critical biasing where ±5 % V_Z variation is acceptable

Compared with BZX84-A5V1,215, MMBZ5222BS offers lower cost but sacrifices 4× tighter voltage tolerance and 20 % lower power rating, while BZX84-C5V1 retains full package compatibility but trades ±1 % precision for broader ±5 % spread - making the A-grade part essential for closed-loop regulation where <±20 mV error is mandatory.

Availability

BZX84-A5V1,215 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, consumer IoT sensor nodes, and medical diagnostic equipment requiring stable component supply with guaranteed long-term continuity.

Supply support for BZX84-A5V1,215 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 discrete and logic devices, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.

The BZX84 series belongs to Nexperia's precision Zener regulator product line, engineered specifically for compact, low-power voltage reference and regulation in space-constrained applications where ±1 % tolerance and SOT23 mountability are critical.

FAQ

What is the maximum continuous forward current for BZX84-A5V1,215?

The absolute maximum forward current is 200 mA per limiting values table. However, sustained forward conduction is not intended in normal Zener operation; the device is rated for reverse-bias regulation. Forward voltage is specified at 10 mA (≤0.9 V), and continuous forward bias above 100 mA risks thermal runaway due to low thermal resistance and lack of forward power rating.

Can BZX84-A5V1,215 replace a 5.1 V TL431-based reference in feedback circuits?

No - the BZX84-A5V1,215 is a passive two-terminal Zener diode, while TL431 is an active three-terminal adjustable shunt regulator with 2.5 V reference and gain. It can replace fixed-voltage TL431 configurations only when used with external resistive dividers, but lacks the TL431's low dynamic impedance (<0.2 Ω) and wide bandwidth, limiting transient response in high-frequency PSUs.

How does the "215" suffix in BZX84-A5V1,215 affect specifications?

The "215" is Nexperia's packaging and reel code indicating 3,000-unit tape-and-reel format with specific carrier tape dimensions and orientation. It does not alter electrical or thermal characteristics - all BZX84-A5V1 variants share identical Zener voltage, tolerance, power rating, and thermal performance regardless of suffix.

Is BZX84-A5V1,215 qualified for automotive applications?

No - per Revision 7 datasheet section 13, this part is explicitly marked non-automotive qualified. Nexperia offers separate -Q automotive-qualified versions (e.g., BZX84-A5V1,215-Q) with AEC-Q101 stress testing, enhanced traceability, and PPAP documentation. Using the standard version in automotive systems voids warranty and violates functional safety requirements.

BZX84-A5V1,215 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):: 5.1 V

Tolerance:: ±1%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 60 Ohms

Current - Reverse Leakage @ Vr:: 2 µA @ 2 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-A5V1,215 FAQ

1.How can I place an order for BZX84-A5V1,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-A5V1,215 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-A5V1,215 reliable?

The price and inventory of BZX84-A5V1,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-A5V1,215 is usually 5 days.

3.What payment methods are accepted for BZX84-A5V1,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-A5V1,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-A5V1,215?

BZX84-A5V1,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-A5V1,215 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-A5V1,215?

For technical support, including BZX84-A5V1,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-A5V1,215 requirements.

6.How does Aetrix verify that BZX84-A5V1,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-A5V1,215 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-A5V1,215 meets industry standards.

7.What is the process for return or replacement of BZX84-A5V1,215?

All BZX84-A5V1,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-A5V1,215, 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-A5V1,215 part is unused and in its original packaging.

Return procedure for BZX84-A5V1,215:

1.Submit a request within 90 days.

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

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