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

Nexperia USA Inc. BZX79-C2V4,113

Name: BZX79-C2V4,113
Brand: Nexperia USA Inc.
SKU: BZX79-C2V4,113
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX79-C2V4,113

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: BZX79-C2V4,113.pdf

Description:: DIODE ZENER 2.4V 400MW ALF2

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Product details

Overview

BZX79-C2V4,113 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 2.4 V nominal Zener voltage at 5 mA test current, 500 mW total power dissipation at 50 °C ambient, and 40 W non-repetitive peak reverse power. It serves as a low-power voltage reference in linear regulators, overvoltage protection circuits, and precision biasing networks for analog sensor interfaces.

For engineers reviewing the BZX79-C2V4,113 datasheet, BZX79-C2V4,113 pinout, BZX79-C2V4,113 application, or BZX79-C2V4,113 equivalent, this page delivers verified electrical parameters, thermal behavior, differential resistance, temperature coefficient, and real-world use context - all aligned with Nexperia's official 2002 product data sheet.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal 2.4 V regulation voltage at I_Z = 5 mA, exhibiting a typical differential resistance of 275 Ω and a negative temperature coefficient of −3.5 mV/K at low currents. Its junction-to-ambient thermal resistance is 380 K/W under standard PCB mounting conditions.

The device supports transient surge handling up to 40 W for 100 μs pulses and maintains stable regulation across −65 °C to +200 °C storage and junction temperature ranges. Reverse leakage is specified at ≤50 μA when VR = 1 V, confirming suitability for low-current reference applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.4 V nominal at I_Z = 5 mA; ±5% tolerance band (2.2–2.6 V) ensures predictable clamping in cost-sensitive references.
Differential Resistance (r_dif)	275 Ω typical at 5 mA; defines output impedance and load regulation error in shunt regulator topologies.
Temperature Coefficient (S_Z)	−3.5 mV/K typical at 5 mA; enables predictable drift compensation in temperature-stable references.
Total Power Dissipation (P_tot)	500 mW at T_amb = 50 °C; sets maximum continuous DC power handling on standard FR-4 PCB without heatsinking.
Non-repetitive Peak Power (P_ZSM)	40 W for 100 μs pulse; supports transient overvoltage suppression in ESD-coupled signal paths.
Reverse Leakage (I_R)	≤50 μA at V_R = 1 V; confirms low standby current draw in battery-powered voltage monitor circuits.

Pinout & Package

Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode indicated by a black band. Leads are tinned copper-clad steel; body diameter 1.85 mm, length 4.25 mm, lead spacing 25.4 mm.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-side connection in shunt configuration	Connected to ground or lower potential node; carries forward current up to 250 mA during transient events.
Cathode	Zener breakdown terminal / regulated output node	Marked with black band; provides stable 2.4 V reference when reverse-biased above breakdown threshold.

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables cost-optimized voltage referencing where tight regulation is not required, such as power-on reset thresholds or LED biasing.
500 mW power rating at 50 °C ambient	Supports continuous operation in compact consumer electronics enclosures without forced airflow or thermal pads.
Hermetic SOD27 glass package	Ensures long-term reliability and moisture resistance in industrial environments with high humidity or thermal cycling.
−3.5 mV/K temperature coefficient	Allows predictable drift modeling for compensation in analog front-ends operating across −40 °C to +85 °C ambient ranges.

Applications

Power Supply Reference

Sensor Biasing

Use Scenario: Providing stable 2.4 V reference for op-amp input stages in low-cost AC/DC adapter feedback loops.

IC Role / Device Role / Timing Role: Shunt voltage reference regulating feedback node voltage independent of load current variation.

Use Value: Maintains ±5% output accuracy over 0–50 °C ambient while consuming <100 μA quiescent current.

Use Scenario: Biasing thermistor or RTD bridges in HVAC temperature sensing modules.

IC Role / Device Role / Timing Role: Precision voltage source establishing known excitation potential across resistive sensing elements.

Use Value: Delivers stable 2.4 V with <50 μA leakage, minimizing self-heating error in millivolt-level bridge outputs.

Overvoltage Clamp

Microcontroller Reset Circuit

Use Scenario: Protecting GPIO pins from ESD-induced transients in USB peripheral interface designs.

IC Role / Device Role / Timing Role: Fast-acting clamp limiting voltage excursion to 2.6 V (max) during 100 μs surges.

Use Value: Absorbs up to 40 W peak power without degradation, preserving downstream logic integrity.

Use Scenario: Generating clean power-on reset signal for 3.3 V microcontrollers using RC delay and Zener threshold detection.

IC Role / Device Role / Timing Role: Voltage threshold detector triggering reset assertion when supply rises above 2.2 V.

Use Value: Guarantees reliable reset release at ≥2.2 V with minimal hysteresis due to low dynamic impedance (275 Ω).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX79-B2V4,113	±2% tolerance (2.35–2.45 V), lower r_dif (275 Ω typ. vs. 600 Ω max), tighter tempco control	Preferred for precision references requiring <1% absolute error; higher cost and tighter inventory control	Select when system-level calibration is impractical and board-level accuracy must be guaranteed at production.
1N4731A	Same 2.4 V nominal, but ±5% tolerance in DO-41 package; higher P_tot (1 W), larger footprint, higher r_dif (100 Ω min)	Suitable for higher-power shunt regulation; incompatible with space-constrained SOD27 layouts	Choose only if thermal margin exceeds 500 mW or existing DO-41 footprint reuse is mandatory.

Compared with BZX79-B2V4,113, the C-grade offers lower cost and adequate stability for non-critical references; versus 1N4731A, it trades power headroom for miniaturization and lower parasitic capacitance (450 pF vs. ~1 nF), improving high-frequency noise immunity.

Availability

BZX79-C2V4,113 is available at Aetrix Electronics and suitable for power supply references, sensor biasing, overvoltage clamping, and microcontroller reset circuits requiring stable component supply across automotive infotainment, industrial PLC I/O modules, and consumer appliance control boards.

Supply support for BZX79-C2V4,113 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 leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, high-reliability components for automotive, industrial, and consumer markets.

The BZX79 series belongs to Nexperia's legacy Zener diode portfolio designed specifically for cost-effective, low-power voltage regulation and reference applications in space-constrained, thermally unmanaged PCB environments.

FAQ

What is the maximum continuous reverse current the BZX79-C2V4,113 can handle?

The device does not specify a maximum continuous reverse current; instead, its safe operating area is defined by power dissipation limits. At 50 °C ambient, it sustains up to 500 mW, corresponding to ~208 mA at 2.4 V. Exceeding this causes junction overheating beyond 200 °C, risking permanent failure per IEC 60134 limiting values.

Can BZX79-C2V4,113 be used in place of BZX79-B2V4,113 without circuit redesign?

Yes, electrically interchangeable in most shunt regulator applications, but expect wider output voltage spread (2.2–2.6 V vs. 2.35–2.45 V) and higher dynamic impedance (up to 600 Ω vs. 275 Ω typ.). System-level testing is required if regulation accuracy or load transient response is critical.

What is the cathode marking convention for this diode?

The cathode is marked by a single black band near one end of the glass body, consistent with JEDEC DO-35 and IEC SOD27 standards. When mounted axially, the banded end connects to the higher-potential node in reverse-bias Zener operation.

Does this Zener diode require a series resistor in all applications?

Yes - a current-limiting resistor is mandatory to prevent thermal runaway. For example, at 5 V supply and 5 mA Zener current, a 520 Ω resistor sets proper bias. The resistor value must ensure power dissipation stays within both the diode's 500 mW limit and the resistor's own rating under worst-case voltage and temperature conditions.

BZX79-C2V4,113 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 2.4 V

Tolerance:: ±5%

Power - Max:: 400 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 ~ 200°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ALF2

BZX79-C2V4,113 FAQ

1.How can I place an order for BZX79-C2V4,113 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX79-C2V4,113 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 BZX79-C2V4,113 reliable?

The price and inventory of BZX79-C2V4,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C2V4,113 is usually 5 days.

3.What payment methods are accepted for BZX79-C2V4,113?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C2V4,113 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX79-C2V4,113?

BZX79-C2V4,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX79-C2V4,113 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 BZX79-C2V4,113?

For technical support, including BZX79-C2V4,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C2V4,113 requirements.

6.How does Aetrix verify that BZX79-C2V4,113 is sourced from the original manufacturer or authorized distributors?

All BZX79-C2V4,113 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 BZX79-C2V4,113 meets industry standards.

7.What is the process for return or replacement of BZX79-C2V4,113?

All BZX79-C2V4,113 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C2V4,113, 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 BZX79-C2V4,113 part is unused and in its original packaging.

Return procedure for BZX79-C2V4,113:

1.Submit a request within 90 days.

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

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