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

Nexperia USA Inc. BZX84-B3V0,215

Name: BZX84-B3V0,215
Brand: Nexperia USA Inc.
SKU: BZX84-B3V0,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B3V0,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-B3V0,215.pdf

Description:: DIODE ZENER 3V 250MW TO236AB

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Product details

Overview

BZX84-B3V0,215 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 3.0 V nominal breakdown at 5 mA, with 250 mW total power dissipation and 40 W non-repetitive peak reverse power handling. It serves as a precision reference or overvoltage clamp in low-power analog supply rails and sensor biasing circuits.

For engineers reviewing the BZX84-B3V0,215 datasheet, BZX84-B3V0,215 pinout, BZX84-B3V0,215 application, or BZX84-B3V0,215 equivalent, key selection considerations include its 3.0 V Zener voltage tolerance, differential resistance ≤95 Ω at 5 mA, temperature coefficient of −3.5 to 0.0 mV/K, and SOT23-compatible thermal resistance of 330 K/W to solder point.

Technical Context

This device operates in reverse-bias breakdown mode to maintain stable voltage across its cathode-anode terminals under varying load or input conditions. Its regulation relies on controlled avalanche and Zener mechanisms, with specified test current of 5 mA and maximum reverse current of 10 μA at 2.4 V.

The diode exhibits a negative-to-slightly-positive temperature coefficient depending on working voltage and current, enabling predictable drift compensation in reference designs. Its 500 K/W junction-to-ambient thermal resistance assumes FR4 PCB mounting with single-sided 70 µm copper and standard footprint.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.94 V to 3.06 V at I_Z = 5 mA - defines regulated output voltage window under nominal bias
Differential Resistance (r_dif)	≤95 Ω at I_Z = 5 mA - determines voltage regulation stiffness against load current changes
Reverse Current (I_R)	≤10 μA at V_R = 2.4 V - sets minimum leakage in sub-breakdown standby operation
Total Power Dissipation (P_tot)	250 mW at T_amb ≤ 25 °C - limits continuous DC power handling on standard FR4 PCB
Non-repetitive Peak Reverse Power (P_ZSM)	40 W for t_p = 100 μs - enables transient surge suppression without failure
Temperature Coefficient (S_Z)	−3.5 to 0.0 mV/K at I_Z = 5 mA - quantifies voltage drift per degree Celsius for stability analysis
Junction Temperature (T_j)	150 °C maximum - constrains thermal design margin under worst-case ambient and power conditions

Pinout & Package

Package: SOT23 (TO-236AB), surface-mount plastic package with 3 leads, 1.9 mm × 1.1 mm body, 0.9 mm height, and standard reflow footprint per Figure 12.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-bias terminal; connects to lower-potential node in regulation path
2	Not Connected (n.c.)	Internal die pad with no electrical connection; must remain unconnected on PCB
3	Cathode (K)	Reverse-bias terminal; connects to higher-potential node and provides regulated output reference

Key Features

Feature	Design Value
±2 % Zener voltage tolerance	Enables tighter regulation than ±5 % variants (BZX84-C) for mid-precision references
250 mW power rating	Supports continuous operation in space-constrained consumer and industrial PCBs without heatsinking
40 W surge capability	Withstands short-duration transients such as ESD or inductive kickback without degradation
SOT23 footprint compatibility	Allows drop-in replacement in existing 3-pin SMD layouts and automated assembly with standard pick-and-place
−3.5 to 0.0 mV/K tempco	Permits predictable thermal drift modeling in temperature-sensitive analog signal chains

Applications

Power Supply Reference

Sensor Biasing

Use Scenario: Providing stable 3.0 V reference for ADC voltage dividers or op-amp feedback networks in battery-powered IoT nodes.

IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential relative to ground.

Use Value: Delivers 3.0 V ±2 % accuracy at 5 mA with <95 Ω dynamic impedance, minimizing code error in 12-bit ADC systems.

Use Scenario: Biasing photodiode or RTD front-end amplifiers requiring low-noise, stable excitation voltage.

IC Role / Device Role / Timing Role: Low-leakage (≤10 μA @ 2.4 V) voltage clamp establishing fixed bias point for transducer interface.

Use Value: Ensures sensor output linearity by holding bias within ±30 mV over temperature via predictable −3.5 to 0.0 mV/K drift.

Overvoltage Clamp

Logic-Level Translation

Use Scenario: Protecting 3.3 V microcontroller I/O pins from transient overvoltage events exceeding 3.6 V.

IC Role / Device Role / Timing Role: Fast-acting shunt element diverting surge current when reverse voltage exceeds 3.06 V.

Use Value: Clamps spikes up to 40 W for 100 μs without damage, limiting pin voltage to ≤3.3 V during ESD events.

Use Scenario: Level-shifting 5 V digital signals down to 3.0 V logic thresholds in mixed-voltage MCU interfaces.

IC Role / Device Role / Timing Role: Forward-biased diode (V_F ≤ 0.9 V @ 10 mA) dropping voltage between rail domains.

Use Value: Provides deterministic 0.9 V forward drop with <100 ns switching, enabling clean 3.0 V logic high assertion.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5226BS-7-F	3.0 V ±5 %, 200 mW, SOT23, 100 Ω r_dif	Looser tolerance and lower power limit reduce precision in reference use but suit cost-sensitive clamping	Select when ±5 % regulation accuracy and lower surge immunity are acceptable for non-critical protection
Vishay BZX84-C3V0-TP	3.0 V ±5 %, 250 mW, SOT23, 100 Ω r_dif, 10 μA I_R @ 2.4 V	Same power and leakage as BZX84-B3V0 but wider voltage spread increases reference uncertainty	Choose where board-level calibration compensates for tolerance, or where cost drives ±5 % acceptance

Compared with BZX84-B3V0,215, MMBZ5226BS-7-F offers lower cost but sacrifices 3× tighter voltage control and 20 % lower power rating, while BZX84-C3V0-TP matches power and leakage but trades ±2 % precision for broader ±5 % tolerance-making the original optimal for mid-accuracy analog references.

Availability

BZX84-B3V0,215 is available at Aetrix Electronics and suitable for power supply reference, sensor biasing, overvoltage clamp, and logic-level translation requiring stable component supply and consistent SOT23 packaging.

Supply support for BZX84-B3V0,215 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, headquartered in Nijmegen, Netherlands.

The BZX84 series belongs to Nexperia's voltage regulator diode product line, engineered for compact, low-power voltage reference and protection in consumer, industrial, and computing applications.

FAQ

What is the maximum continuous reverse current this diode can handle?

The BZX84-B3V0,215 is rated for a maximum forward current of 200 mA, but its continuous reverse (Zener) current is limited by power dissipation: at 25 °C ambient, 250 mW / 3.0 V ≈ 83 mA maximum steady-state Zener current. Exceeding this risks thermal runaway due to junction temperature rise beyond 150 °C.

Can this diode be used in parallel for higher power handling?

No-Zener diodes exhibit manufacturing variations in breakdown voltage that cause current hogging when paralleled. Even two BZX84-B3V0,215 units will not share current evenly; one will conduct most of the load and overheat. For higher power, select a single higher-rated Zener or use active regulation instead.

Is the not-connected pin (Pin 2) required to be left floating on the PCB?

Yes-Pin 2 is internally unconnected and must remain electrically isolated on the PCB layout. Routing a trace to it or applying solder paste may cause unintended shorts or mechanical stress. The official Nexperia SOT23 footprint (Figure 12) omits copper for Pin 2, confirming its non-functional status.

How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?

With a temperature coefficient of −3.5 to 0.0 mV/K, the BZX84-B3V0,215 exhibits up to 438 mV total drift across a 125 K range (−40 °C to +85 °C). At typical operating current (5 mA), this translates to ±14.6 mV/°C × 125 K = ±1.825 V worst-case shift-so actual regulation stays within 2.94–3.06 V only at 25 °C; full-range accuracy requires external compensation or calibration.

BZX84-B3V0,215 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:: ±2%

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-B3V0,215 FAQ

1.How can I place an order for BZX84-B3V0,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B3V0,215 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-B3V0,215 reliable?

The price and inventory of BZX84-B3V0,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B3V0,215 is usually 5 days.

3.What payment methods are accepted for BZX84-B3V0,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B3V0,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B3V0,215?

BZX84-B3V0,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B3V0,215 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-B3V0,215?

For technical support, including BZX84-B3V0,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B3V0,215 requirements.

6.How does Aetrix verify that BZX84-B3V0,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-B3V0,215 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-B3V0,215 meets industry standards.

7.What is the process for return or replacement of BZX84-B3V0,215?

All BZX84-B3V0,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B3V0,215, 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-B3V0,215 part is unused and in its original packaging.

Return procedure for BZX84-B3V0,215:

1.Submit a request within 90 days.

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

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