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

Nexperia USA Inc. BZX79-C13,143

Name: BZX79-C13,143
Brand: Nexperia USA Inc.
SKU: BZX79-C13,143
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX79-C13,143

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX79-C13,143.pdf

Description:: DIODE ZENER 13V 400MW ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:4,996

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Product details

Overview

BZX79-C13,143 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 13 V nominal working voltage at 5 mA test current, 500 mW total power dissipation, and 100 nA reverse leakage at 8 V. It serves as a low-power voltage reference or stabilization element in linear power supplies, sensor biasing circuits, and overvoltage protection clamps.

For engineers reviewing the BZX79-C13,143 datasheet, BZX79-C13,143 pinout, BZX79-C13,143 application, or BZX79-C13,143 equivalent, this part is selected for precision low-current voltage referencing where ±5% tolerance, low thermal drift (7.0 mV/K typ.), and stable 13 V regulation under 5 mA are design-critical parameters.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified differential resistance of 50–170 Ω at 5 mA, enabling predictable dynamic impedance behavior in feedback or reference paths. Its temperature coefficient of +7.0 mV/K (typ.) indicates positive drift above ~6 V, supporting stable biasing across industrial temperature ranges.

The device features non-repetitive peak reverse power dissipation up to 40 W for 100 μs pulses and exhibits 80 pF junction capacitance at 0 V, making it suitable for DC and low-frequency stabilization-not RF or high-speed switching applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage (V_Z)	13 V at I_Z = 5 mA - defines stable regulation point for reference circuits
Tolerance	±5% - supports cost-sensitive designs where tight voltage accuracy is not required
Total Power Dissipation	500 mW at T_amb = 50 °C - sets maximum continuous DC power handling in PCB-mounted configuration
Reverse Leakage Current	100 nA at V_R = 8 V - ensures minimal quiescent current draw in standby or battery-powered references
Differential Resistance	50–170 Ω at I_Z = 5 mA - determines output impedance and load regulation sensitivity
Temperature Coefficient	+7.0 mV/K (typ.) - quantifies voltage drift per degree Celsius rise, critical for thermal stability
Junction Capacitance	80 pF at f = 1 MHz, V_R = 0 V - limits use in high-frequency signal paths or fast transient suppression

Pinout & Package

Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode indicated by a colored band. Lead length ≤8 mm; no metallization pad required on PCB.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / reverse breakdown reference node	Connected to lower potential side in Zener configuration; used for forward-bias testing
Cathode	Regulated output node in reverse breakdown	Marked with band; connected to higher potential side to enable Zener operation at 13 V

Key Features

Feature	Design Value
Low-leakage Zener operation	100 nA max. reverse current at 8 V enables microampere-level reference biasing
Stable thermal coefficient	+7.0 mV/K typical allows predictable voltage shift over −65 °C to +200 °C operating range
Robust surge capability	40 W non-repetitive peak reverse power at 100 μs supports transient overvoltage clamping
Standardized E24 voltage series	13 V selection aligns with common logic supply rails and analog reference points

Applications

Power Supply Reference

Sensor Biasing

Use Scenario: Providing stable 13 V reference for adjustable linear regulators or op-amp feedback networks in offline AC/DC adapters.

IC Role / Device Role / Timing Role: Zener diode functions as shunt voltage reference, maintaining constant voltage across load despite input variation.

Use Value: Enables accurate output regulation without active ICs, reducing BOM count and cost in low-power auxiliary supplies.

Use Scenario: Biasing resistive temperature detectors (RTDs) or bridge sensors requiring precise excitation voltage.

IC Role / Device Role / Timing Role: Acts as passive voltage clamp to set fixed bias point for sensor elements in measurement front-ends.

Use Value: Delivers repeatable 13 V excitation with <100 nA leakage, minimizing self-heating error in precision analog sensing.

Overvoltage Protection Clamp

Microcontroller Reset Circuit

Use Scenario: Clamping transient spikes on 12 V automotive or industrial control bus lines.

IC Role / Device Role / Timing Role: Zener conducts during overvoltage events to limit rail voltage to 13 V, protecting downstream ICs.

Use Value: Absorbs 40 W surges for 100 μs without failure, providing robust first-line protection before TVS devices activate.

Use Scenario: Generating clean reset threshold for 3.3 V or 5 V microcontrollers using resistor-divider and Zener clamp.

IC Role / Device Role / Timing Role: Sets reliable trip voltage for external reset supervisor ICs or RC-based reset generators.

Use Value: ±5% tolerance and low tempco ensure consistent reset assertion across temperature and unit-to-unit variation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4742A	12 V nominal, ±5%, DO-41 package, 1.0 W power rating	Higher power handling but larger footprint; less suitable for space-constrained PCBs	Select when 12 V reference is acceptable and higher surge margin is needed
BZX79-B13,113	13 V nominal, ±2% tolerance, same SOD27 package, identical thermal specs	Improved voltage accuracy at cost of tighter process control and higher unit price	Select when system-level calibration or tighter regulation tolerance is required

Compared with 1N4742A and BZX79-B13,113, the BZX79-C13,143 offers optimal balance of 13 V targeting, compact DO-35 form factor, and cost-effective ±5% tolerance-ideal for volume production where moderate accuracy suffices and board space is constrained.

Availability

BZX79-C13,143 is available at Aetrix Electronics and suitable for power supply references, sensor biasing, overvoltage clamping, and microcontroller reset circuits requiring stable component supply and long-term obsolescence management.

Supply support for BZX79-C13,143 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, consumer, and wearable markets with high-volume, high-reliability components.

The BZX79 series belongs to Nexperia's standard Zener diode product line, engineered for low-cost, high-yield voltage regulation in general-purpose analog and power management circuits.

FAQ

What is the maximum continuous power dissipation for BZX79-C13,143?

The BZX79-C13,143 has a total power dissipation rating of 500 mW at ambient temperature of 50 °C with leads ≤8 mm mounted on a PCB without metallization pad. Derating applies above 50 °C per the thermal resistance of 380 K/W junction-to-ambient.

How does the temperature coefficient affect regulation accuracy?

With a typical temperature coefficient of +7.0 mV/K, the BZX79-C13,143's Zener voltage increases by ~0.91 V over a 130 °C range (−65 °C to +65 °C), directly impacting reference stability in unregulated thermal environments-designers must account for this drift in precision applications.

Can BZX79-C13,143 be used in place of BZX79-B13,113?

Yes, electrically and mechanically interchangeable in SOD27 packages, but BZX79-C13,143 has ±5% tolerance versus ±2% for the B-series. Substitution is valid where looser voltage accuracy is acceptable, though system-level calibration may require adjustment.

What is the reverse leakage current specification at 8 V?

The reverse leakage current for BZX79-C13,143 is guaranteed ≤100 nA at V_R = 8 V and T_j = 25 °C. This low leakage supports energy-efficient biasing in battery-powered or ultra-low-power analog circuits without significant quiescent current penalty.

BZX79-C13,143 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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

Packaging:: Cut Tape (CT)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 13 V

Tolerance:: ±5%

Power - Max:: 400 mW

Impedance (Max) (Zzt):: 30 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 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-C13,143 FAQ

1.How can I place an order for BZX79-C13,143 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX79-C13,143 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-C13,143 reliable?

The price and inventory of BZX79-C13,143 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C13,143 is usually 5 days.

3.What payment methods are accepted for BZX79-C13,143?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C13,143 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX79-C13,143?

BZX79-C13,143 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX79-C13,143 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-C13,143?

For technical support, including BZX79-C13,143 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C13,143 requirements.

6.How does Aetrix verify that BZX79-C13,143 is sourced from the original manufacturer or authorized distributors?

All BZX79-C13,143 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-C13,143 meets industry standards.

7.What is the process for return or replacement of BZX79-C13,143?

All BZX79-C13,143 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C13,143, 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-C13,143 part is unused and in its original packaging.

Return procedure for BZX79-C13,143:

1.Submit a request within 90 days.

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

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