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

Nexperia USA Inc. BZX84-B2V4,215

Name: BZX84-B2V4,215
Brand: Nexperia USA Inc.
SKU: BZX84-B2V4,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B2V4,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-B2V4,215.pdf

Description:: DIODE ZENER 2.4V 250MW TO236AB

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Product details

Overview

BZX84-B2V4,215 from Nexperia is a ±2 % 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 low-power reference or clamp in power supply feedback loops, sensor biasing circuits, and overvoltage protection stages.

For engineers reviewing the BZX84-B2V4,215 datasheet, BZX84-B2V4,215 pinout, BZX84-B2V4,215 application, or BZX84-B2V4,215 equivalent, this page delivers verified Zener voltage, differential resistance, temperature coefficient, thermal resistance, and SOT23 terminal mapping - all confirmed from Nexperia's Rev. 7 product data sheet.

Technical Context

This device operates as a two-terminal silicon Zener diode with avalanche-dominated breakdown at 2.4 V, exhibiting a negative temperature coefficient of −3.5 mV/K at I_Z = 5 mA. Its 600 Ω maximum differential resistance at 5 mA ensures stable regulation under light-load conditions.

The SOT23 package enables surface-mount integration into space-constrained PCBs, with thermal resistance from junction to ambient of 500 K/W on FR4 board - limiting continuous operation to ≤150 °C junction temperature under specified mounting conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Breakdown Voltage V_Z	2.35 V to 2.45 V at I_Z = 5 mA - defines precise clamping threshold for 2.4 V reference applications
Differential Resistance r_dif	≤600 Ω at I_Z = 5 mA - determines output impedance and regulation sensitivity to current variation
Reverse Current I_R	≤100 μA at V_R = 1 V - specifies leakage level below breakdown, critical for low-power standby circuits
Temperature Coefficient S_Z	−3.5 mV/K at I_Z = 5 mA - quantifies voltage drift per degree Celsius, enabling thermal error budgeting
Total Power Dissipation P_tot	250 mW at T_amb ≤ 25 °C on FR4 PCB - sets maximum steady-state power handling before thermal derating
Non-repetitive Peak Power P_ZSM	40 W for t_p = 100 μs - supports transient surge suppression without failure
Junction Temperature T_j	−55 °C to +150 °C - defines operational envelope for industrial and extended-temperature designs

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; standard footprint per Figure 12 (reflow) and Figure 13 (wave soldering); dimensions: 2.9 mm × 1.3 mm × 1.0 mm (L × W × H).

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in reverse-bias regulation configuration
2	Not Connected (n.c.)	Internally unconnected lead; must remain floating - no PCB trace or solder joint required
3	Cathode (K)	Reverse-biased terminal; connects to higher-potential node and serves as regulated output reference point

Key Features

Feature	Design Value
±2 % voltage tolerance	Enables tighter regulation than ±5 % variants (BZX84-C), reducing calibration overhead in precision analog circuits
250 mW power rating	Supports continuous operation in low-current bias networks (<10 mA) without heatsinking on standard FR4 PCBs
40 W surge capability	Withstands ESD transients and line surges up to 100 μs duration without degradation or parametric shift
−3.5 mV/K tempco	Allows predictable compensation in temperature-sensitive references when paired with positive-tempco components
SOT23 footprint compatibility	Enables drop-in replacement across BZX84-A/B/C series and interoperability with common pick-and-place equipment

Applications

Power Supply Feedback Reference

Sensor Biasing Network

Use Scenario: Stabilizing the reference input of TL431-based adjustable linear regulators or switching controller feedback dividers.

IC Role / Device Role / Timing Role: Provides fixed 2.4 V shunt reference to set output voltage via resistor divider ratio.

Use Value: Enables ±2 % output accuracy without trimming, leveraging its tight tolerance and low dynamic impedance.

Use Scenario: Supplying stable bias current to silicon photodiodes or RTD interface amplifiers in industrial sensors.

IC Role / Device Role / Timing Role: Acts as low-noise, low-drift voltage clamp to establish known bias point for transducer excitation.

Use Value: Delivers <100 μA leakage at 1 V reverse bias, minimizing measurement offset in high-impedance signal chains.

Overvoltage Clamp Protection

Logic-Level Signal Conditioning

Use Scenario: Protecting microcontroller GPIO pins or ADC inputs from transient overvoltage events exceeding 3.3 V or 5 V rails.

IC Role / Device Role / Timing Role: Shunts excess energy to ground when reverse voltage exceeds 2.45 V, limiting peak stress on downstream ICs.

Use Value: Withstands 40 W non-repetitive surges, absorbing >6 A peak current for 100 μs without failure.

Use Scenario: Level-shifting and clamping 5 V logic signals to 3.3 V tolerant interfaces using passive resistor-Zener networks.

IC Role / Device Role / Timing Role: Clamps high-side signal swing to 2.4 V + V_F (~3.3 V), preventing latch-up in mixed-voltage systems.

Use Value: Forward voltage ≤0.9 V at 10 mA ensures clean low-threshold conduction during signal transitions.

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 MMBZ5221BS-7-F	2.4 V ±5 %, 350 mW P_tot, 100 Ω r_dif at 20 mA	Higher power rating but looser tolerance; better for higher-current clamping, less suitable for precision reference	Select when surge robustness and higher continuous current (>15 mA) are prioritized over voltage accuracy
Vishay BZX84-C2V4-TP	2.4 V ±5 %, 250 mW P_tot, 600 Ω r_dif at 5 mA, same SOT23 package	Identical package and power rating, but wider tolerance increases reference uncertainty in closed-loop systems	Choose only for cost-sensitive, non-critical biasing where ±5 % V_Z drift is acceptable

Compared with MMBZ5221BS-7-F and BZX84-C2V4-TP, the BZX84-B2V4,215 uniquely balances ±2 % tolerance, 250 mW rating, and 600 Ω dynamic impedance - making it optimal for compact, precision-regulated 2.4 V references where thermal and parametric stability are design-critical.

Availability

BZX84-B2V4,215 is available at Aetrix Electronics and suitable for power supply feedback references, sensor biasing networks, overvoltage clamp protection, and logic-level signal conditioning requiring stable component supply across industrial, instrumentation, and consumer electronics programs.

Supply support for BZX84-B2V4,215 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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered specifically for low-power voltage regulation and clamping in space-constrained, cost-sensitive applications demanding repeatable breakdown characteristics.

FAQ

What is the maximum continuous forward current for BZX84-B2V4,215?

The absolute maximum forward current is 200 mA per Table 5 (Limiting Values). However, sustained forward conduction is not intended; the device is designed for reverse-bias Zener operation. Continuous forward current above 10 mA risks thermal overstress due to 0.9 V forward drop and 250 mW power limit.

Can BZX84-B2V4,215 be used in place of a 2.5 V Zener diode?

No - its guaranteed breakdown range is 2.35 V to 2.45 V at 5 mA, falling short of 2.5 V requirements. Substituting it for a 2.5 V part would cause undervoltage regulation and potential system malfunction. Use BZX84-B2V7 (2.65–2.75 V) or BZX84-B2V7,215 for closer alignment.

Is pin 2 electrically functional or a mechanical dummy lead?

Pin 2 is explicitly marked "n.c." (not connected) in Table 2 and the simplified outline graphic. It is an internal mechanical stub with no electrical connection to the die - leaving it unconnected on the PCB is mandatory; soldering or routing to ground/supply will cause no functional change but may compromise mechanical reliability.

How does thermal resistance affect derating above 25 °C ambient?

With R_th(j-a) = 500 K/W, each 1 °C rise above 25 °C reduces allowable power by 0.5 mW. At 75 °C ambient, P_tot must be derated to 125 mW to maintain T_j ≤ 150 °C - confirmed by the linear derating curve in Nexperia's thermal characteristics section.

BZX84-B2V4,215 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:: ±2%

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-B2V4,215 FAQ

1.How can I place an order for BZX84-B2V4,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B2V4,215 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-B2V4,215 reliable?

The price and inventory of BZX84-B2V4,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B2V4,215 is usually 5 days.

3.What payment methods are accepted for BZX84-B2V4,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B2V4,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B2V4,215?

BZX84-B2V4,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B2V4,215 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-B2V4,215?

For technical support, including BZX84-B2V4,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B2V4,215 requirements.

6.How does Aetrix verify that BZX84-B2V4,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-B2V4,215 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-B2V4,215 meets industry standards.

7.What is the process for return or replacement of BZX84-B2V4,215?

All BZX84-B2V4,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B2V4,215, 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-B2V4,215 part is unused and in its original packaging.

Return procedure for BZX84-B2V4,215:

1.Submit a request within 90 days.

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

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