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

Nexperia USA Inc. BZX79-C24,113

Name: BZX79-C24,113
Brand: Nexperia USA Inc.
SKU: BZX79-C24,113
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX79-C24,113

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX79-C24,113.pdf

Description:: DIODE ZENER 24V 400MW ALF2

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Inventory:7,480

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Product details

Overview

BZX79-C24,113 from Nexperia is a ±5% tolerance Zener voltage regulator diode rated for 24 V nominal stabilization at 5 mA test current, with 60–250 Ω differential resistance, 15.9–22.0 mV/K temperature coefficient, and 55 pF capacitance at 1 MHz. It operates as a low-power voltage reference in bias networks, power supply feedback paths, and overvoltage clamp circuits.

For engineers reviewing the BZX79-C24,113 datasheet, BZX79-C24,113 pinout, BZX79-C24,113 application, or BZX79-C24,113 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (380 K/W), non-repetitive peak reverse power (40 W), and DO-35 package compatibility with through-hole PCB assembly.

Technical Context

This device functions as a passive two-terminal voltage reference relying on controlled reverse breakdown. Its Zener voltage is specified at I_Ztest = 5 mA, with differential resistance defining regulation stiffness under load variation. Temperature coefficient (SZ) ranges from +15.9 to +22.0 mV/K, indicating positive drift with junction temperature rise.

Designed for low-power stabilization, it supports continuous dissipation up to 500 mW at T_amb = 50 °C with 8 mm lead length, and withstands transient surges up to 40 W for 100 μs. The hermetically sealed SOD27 (DO-35) glass package ensures stable long-term parametric performance in industrial ambient conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	22.8–25.6 V at I_Z = 5 mA; defines stable reference point for feedback or clamping
Differential Resistance r_dif	60–250 Ω; determines output impedance and load regulation error
Temperature Coefficient S_Z	+15.9 to +22.0 mV/K; quantifies voltage drift per degree Celsius rise in junction temperature
Diode Capacitance C_d	55 pF at f = 1 MHz, V_R = 0 V; impacts high-frequency noise filtering and transient response
Non-repetitive Peak Reverse Power P_ZSM	40 W for t_p = 100 μs; enables short-duration surge suppression without failure
Total Power Dissipation P_tot	500 mW at T_amb = 50 °C; sets maximum steady-state thermal design limit
Reverse Current I_R	≤100 nA at V_R = 0.7 × V_Znom; ensures minimal leakage in high-impedance reference nodes

Pinout & Package

Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking; leads are tinned copper alloy, suitable for wave or hand soldering. Package dimensions: D = 4.25 mm max., L = 25.4 mm min., b = 0.56 mm max., G1 = 1.85 mm max.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-side connection	Connected to ground or lower potential node in Zener shunt configuration
Cathode	Reverse breakdown terminal / high-side connection	Marked by band; connected to input or regulated node; carries Zener current during regulation

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables cost-effective voltage referencing where tight regulation is not required
40 W non-repetitive surge rating	Provides transient overvoltage protection without external TVS components
Hermetic SOD27 glass package	Ensures long-term parameter stability and moisture resistance in harsh environments
500 mW total power dissipation	Supports operation in compact PCB layouts without forced cooling
Low 55 pF junction capacitance	Maintains signal integrity in medium-speed analog and feedback circuits

Applications

Power Supply Feedback

Overvoltage Clamp

Use Scenario: Regulating output voltage in linear or switching power supplies via optocoupler-coupled feedback loop.

IC Role / Device Role / Timing Role: Zener diode provides precise reference voltage to error amplifier input.

Use Value: Maintains ±5% output accuracy across line/load variations and temperature range.

Use Scenario: Protecting microcontroller I/O pins from ESD or inductive kickback in industrial sensor interfaces.

IC Role / Device Role / Timing Role: Shunts excess voltage above 24 V to ground before damage threshold is reached.

Use Value: Limits transient voltage to ≤25.6 V with 40 W surge capability for 100 μs events.

Bias Network Stabilization

Reference Voltage Source

Use Scenario: Setting stable operating point for transistor amplifiers or op-amp biasing in instrumentation circuits.

IC Role / Device Role / Timing Role: Provides fixed DC reference to establish quiescent current or offset voltage.

Use Value: Delivers <100 nA leakage and <250 Ω dynamic impedance for low-drift biasing.

Use Scenario: Generating precision reference for ADC/DAC calibration or comparator thresholds in data acquisition systems.

IC Role / Device Role / Timing Role: Supplies stable 24 V reference to analog front-end circuitry.

Use Value: Offers +15.9 to +22.0 mV/K tempco for predictable drift compensation in software.

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-B24,113	±2% tolerance (23.5–24.5 V), lower r_dif (60–200 Ω), tighter SZ (±1.2 mV/K)	Higher accuracy needed in feedback loops requiring <1% output regulation	Select when improved initial tolerance and thermal stability outweigh cost premium
1N4749A	24 V ±5%, 1 W power rating, DO-41 package, higher r_dif (20–30 Ω typical)	Higher power handling required; incompatible with DO-35 footprint	Choose only if board layout allows larger DO-41 and >500 mW continuous dissipation is needed

Compared with BZX79-C24,113, the BZX79-B24,113 offers tighter voltage control and lower dynamic impedance for precision feedback, while the 1N4749A trades smaller size for higher power capacity and different thermal characteristics-neither is drop-in compatible due to package or tolerance mismatch.

Availability

BZX79-C24,113 is available at Aetrix Electronics and suitable for industrial power supply feedback, overvoltage protection, and analog bias network stabilization requiring stable component supply and long-lifecycle support.

Supply support for BZX79-C24,113 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, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, and consumer markets with high-volume, high-reliability components.

The BZX79 series belongs to Nexperia's standard Zener diode portfolio, engineered for cost-sensitive, low-power voltage regulation and clamping in general-purpose electronics.

FAQ

What is the maximum continuous power dissipation for BZX79-C24,113?

The BZX79-C24,113 is rated for 500 mW total power dissipation at ambient temperature of 50 °C with 8 mm lead length. At higher ambient temperatures, derating applies per the thermal resistance of 380 K/W; for example, at 70 °C ambient, maximum allowable power drops to approximately 395 mW to maintain junction temperature below 200 °C.

How does the temperature coefficient affect regulation accuracy?

The BZX79-C24,113 exhibits a positive temperature coefficient of +15.9 to +22.0 mV/K, meaning its Zener voltage increases linearly with junction temperature. Over a 100 °C rise (e.g., 25 °C to 125 °C), voltage shifts by ~1.6–2.2 V-critical for designs requiring stable references across wide temperature ranges and must be compensated in system-level calibration.

Can BZX79-C24,113 be used in surface-mount designs?

No-BZX79-C24,113 uses the axial-leaded SOD27 (DO-35) glass package, designed exclusively for through-hole mounting. Surface-mount equivalents like the BZT52-C24 (SOT-23) exist but differ electrically (e.g., 350 mW rating, 100 nA leakage at V_R = 16.8 V) and are not functionally interchangeable without layout and thermal redesign.

What is the significance of the "C" suffix in BZX79-C24?

The "C" denotes the ±5% Zener voltage tolerance grade within the BZX79 series, distinguishing it from the tighter ±2% "B" grade. This reflects a cost-optimized variant for applications where moderate regulation accuracy suffices-such as non-critical biasing or coarse overvoltage limiting-without requiring tighter process control.

BZX79-C24,113 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):: 24 V

Tolerance:: ±5%

Power - Max:: 400 mW

Impedance (Max) (Zzt):: 70 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 16.8 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-C24,113 FAQ

1.How can I place an order for BZX79-C24,113 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX79-C24,113 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-C24,113 reliable?

The price and inventory of BZX79-C24,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C24,113 is usually 5 days.

3.What payment methods are accepted for BZX79-C24,113?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C24,113 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX79-C24,113?

BZX79-C24,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX79-C24,113 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-C24,113?

For technical support, including BZX79-C24,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C24,113 requirements.

6.How does Aetrix verify that BZX79-C24,113 is sourced from the original manufacturer or authorized distributors?

All BZX79-C24,113 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-C24,113 meets industry standards.

7.What is the process for return or replacement of BZX79-C24,113?

All BZX79-C24,113 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C24,113, 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-C24,113 part is unused and in its original packaging.

Return procedure for BZX79-C24,113:

1.Submit a request within 90 days.

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

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