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

Nexperia USA Inc. BZX84-C2V4,215

Name: BZX84-C2V4,215
Brand: Nexperia USA Inc.
SKU: BZX84-C2V4,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-C2V4,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-C2V4,215.pdf

Description:: DIODE ZENER 2.4V 250MW TO236AB

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Product details

Overview

BZX84-C2V4,215 from Nexperia is a ±5 % 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 linear regulators and sensor biasing circuits.

For engineers reviewing the BZX84-C2V4,215 datasheet, BZX84-C2V4,215 pinout, BZX84-C2V4,215 application, or BZX84-C2V4,215 equivalent, key selection criteria include its 2.2–2.6 V Zener range, 600 Ω max differential resistance at 5 mA, -3.5 to 0.0 mV/K temperature coefficient, 450 pF capacitance at 0 V, and SOT23-compatible thermal resistance of 500 K/W junction-to-ambient.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across load variations and supply fluctuations. Its 2.4 V nominal Zener voltage is specified at I_Z = 5 mA with ±5 % tolerance, and it exhibits a negative-to-zero temperature coefficient between -3.5 mV/K and 0.0 mV/K depending on test current.

The device supports pulsed operation up to 40 W for 100 μs square-wave surges at T_j = 25 °C, and delivers ≤0.9 V forward voltage at 10 mA. Thermal performance is characterized by R_th(j-a) = 500 K/W (FR4 PCB, single-sided copper) and R_th(j-sp) = 330 K/W to cathode solder point.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	2.2 V to 2.6 V at I_Z = 5 mA - defines regulation window under nominal bias
Differential Resistance r_dif	≤600 Ω at I_Z = 5 mA - determines output impedance and load regulation error
Reverse Current I_R	≤100 μA at V_R = 1 V - sets minimum leakage in clamping or reference use
Power Dissipation P_tot	250 mW at T_amb ≤ 25 °C - limits continuous DC power in PCB-mounted operation
Peak Reverse Power P_ZSM	40 W for t_p = 100 μs - enables transient overvoltage suppression without failure
Temperature Coefficient S_Z	-3.5 to 0.0 mV/K at I_Z = 5 mA - quantifies voltage drift over operating temperature range
Diode Capacitance C_d	450 pF at f = 1 MHz, V_R = 0 V - impacts high-frequency noise filtering and stability

Pinout & Package

Package: SOT23 (TO-236AB), surface-mount plastic package with 3 leads, 1.9 mm × 1.1 mm footprint, 1.4 mm height, and standard FR4 reflow solder land pattern (0.6 mm pad width × 0.7 mm length).

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-bias terminal; connects to lower-potential node in Zener regulation configuration
2	Not Connected (n.c.)	Internal die bond wire stub; electrically isolated and must remain unconnected in PCB layout
3	Cathode (K)	Reverse-bias terminal; connects to higher-potential node and serves as primary heat path to PCB

Key Features

Feature	Design Value
±5 % Zener tolerance	Enables cost-effective voltage referencing where tight regulation is not required
250 mW continuous power rating	Supports stable operation in space-constrained low-power analog and digital supply rails
40 W surge capability	Provides robust ESD and transient protection without external TVS devices
SOT23 footprint compatibility	Ensures drop-in replacement in legacy designs and compatibility with standard pick-and-place equipment
150 °C maximum junction temperature	Allows reliable operation in industrial ambient environments up to +125 °C with derating

Applications

Power Supply Reference

Sensor Biasing

Use Scenario: Providing stable 2.4 V reference for ADC voltage dividers in battery-powered IoT nodes.

IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, sinking excess current to maintain fixed node voltage.

Use Value: Delivers <2.5 % voltage error over -40 to +85 °C due to bounded temperature coefficient and low dynamic impedance.

Use Scenario: Biasing photodiode anodes in optical smoke detectors requiring low-noise, stable reverse bias.

IC Role / Device Role / Timing Role: Functions as low-capacitance (450 pF) voltage clamp to set photodiode reverse bias while minimizing signal coupling.

Use Value: Enables sub-100 nA dark current stability via controlled 100 μA max leakage at 1 V reverse bias.

Overvoltage Clamp

Logic-Level Translation

Use Scenario: Protecting 3.3 V microcontroller GPIO pins against accidental 5 V misconnection during prototyping.

IC Role / Device Role / Timing Role: Shunt limiter that conducts above 2.6 V to clamp input to safe level before damage occurs.

Use Value: Absorbs 40 W transient energy within 100 μs, preventing latch-up or gate oxide rupture in CMOS inputs.

Use Scenario: Level-shifting 1.8 V logic outputs to interface with 2.4 V analog comparators in mixed-signal systems.

IC Role / Device Role / Timing Role: Passive pull-up element establishing 2.4 V high-state threshold with minimal propagation delay.

Use Value: Achieves <1 ns rise/fall time contribution due to low 450 pF capacitance and absence of active circuitry.

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	2.4 V ±5 %, 350 mW P_tot, 200 Ω r_dif at 20 mA - lower dynamic impedance but higher power rating	Preferred in higher-current reference designs (>10 mA), less suitable for ultra-low-leakage biasing	Select when tighter regulation under varying load is needed; verify thermal margin on FR4 board
Vishay NZ9F2V4ST5G	2.4 V ±5 %, 200 mW P_tot, 600 Ω r_dif at 5 mA, 100 nA I_R at 1 V - lower leakage but reduced surge capability (25 W)	Better for ultra-low-power sensor biasing; insufficient for repetitive transient suppression	Choose for battery-critical applications where leakage dominates power budget; avoid in surge-prone environments

Compared with BZX84-C2V4,215, MMBZ5221BS offers superior regulation accuracy under load but requires more board area for thermal management, while NZ9F2V4ST5G reduces standby current by 10× yet sacrifices 37.5 % peak surge resilience - making the Nexperia part optimal for balanced cost, size, and transient robustness in general-purpose SMT regulation.

Availability

BZX84-C2V4,215 is available at Aetrix Electronics and suitable for power supply reference, sensor biasing, overvoltage clamp, and logic-level translation requiring stable component supply and SOT23 footprint compatibility.

Supply support for BZX84-C2V4,215 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, with leadership in automotive-qualified and industrial-grade components.

The BZX84 series belongs to Nexperia's precision Zener regulator portfolio, designed specifically for cost-sensitive, space-constrained applications demanding stable voltage references and transient protection in consumer, industrial, and computing systems.

FAQ

What is the maximum continuous reverse current this diode can handle at 2.4 V?

The BZX84-C2V4,215 does not specify a maximum continuous reverse current at exactly 2.4 V; instead, its Zener region begins at V_Z = 2.2 V min and extends to 2.6 V max. At I_Z = 5 mA, it maintains regulation within tolerance. Continuous operation beyond 250 mW (e.g., >104 mA at 2.4 V) exceeds its thermal limit and risks junction failure.

Can this diode be used in place of a 2.4 V TL431-based shunt regulator?

No - the BZX84-C2V4,215 lacks active feedback and cannot replicate the TL431's 2.5 V reference, adjustable output, or 100 mA sink capability. It provides passive, fixed-voltage clamping only. For regulated output with load current >5 mA or programmability, a TL431 remains necessary.

Is the "n.c." pin internally bonded or truly floating?

Pin 2 is a true no-connect terminal: it corresponds to an unused bond wire stub inside the SOT23 package and has no electrical connection to the silicon die. It must remain unconnected on PCBs; routing traces or vias to it may cause assembly defects or unintended parasitic coupling.

How does its 450 pF capacitance affect high-frequency signal integrity?

At 1 MHz, the 450 pF junction capacitance presents ~354 Ω impedance, which may load high-impedance nodes or distort fast edges. In RF or >100 kHz analog paths, this capacitance introduces measurable phase shift and attenuation - use only in DC/low-frequency biasing or clamping, not in signal-path applications.

BZX84-C2V4,215 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:: ±5%

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-C2V4,215 FAQ

1.How can I place an order for BZX84-C2V4,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-C2V4,215 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-C2V4,215 reliable?

The price and inventory of BZX84-C2V4,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C2V4,215 is usually 5 days.

3.What payment methods are accepted for BZX84-C2V4,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C2V4,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-C2V4,215?

BZX84-C2V4,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-C2V4,215 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-C2V4,215?

For technical support, including BZX84-C2V4,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C2V4,215 requirements.

6.How does Aetrix verify that BZX84-C2V4,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-C2V4,215 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-C2V4,215 meets industry standards.

7.What is the process for return or replacement of BZX84-C2V4,215?

All BZX84-C2V4,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C2V4,215, 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-C2V4,215 part is unused and in its original packaging.

Return procedure for BZX84-C2V4,215:

1.Submit a request within 90 days.

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

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