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

Nexperia USA Inc. BZX79-C36,143

Name: BZX79-C36,143
Brand: Nexperia USA Inc.
SKU: BZX79-C36,143
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX79-C36,143

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX79-C36,143.pdf

Description:: DIODE ZENER 36V 400MW ALF2

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BZX79-C36,143 from Nexperia is a ±5% tolerance Zener voltage regulator diode with nominal working voltage 36 V at 2 mA test current, 80 Ω typical differential resistance, and 35 mV/K temperature coefficient. It operates in low-power stabilization circuits requiring stable reference voltages under ambient temperatures up to +200 °C, such as power supply feedback loops and sensor biasing networks.

For engineers reviewing the BZX79-C36,143 datasheet, BZX79-C36,143 pinout, BZX79-C36,143 application, or BZX79-C36,143 equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance, thermal resistance (380 K/W), reverse leakage at specified VR, and DO-35 package compatibility with through-hole PCB layouts.

Technical Context

This device functions as a passive two-terminal voltage reference, relying on controlled reverse breakdown conduction. Its Zener voltage is specified at I_Ztest = 2 mA per Table 2, with differential resistance measured under the same condition, and temperature coefficient derived from typical SZ vs. I_Z curves for 36 V types.

The SOD27 (DO-35) hermetically sealed glass package enables operation across −65 °C to +200 °C storage and junction temperature ranges. Non-repetitive peak reverse power dissipation is rated at 40 W for 100 μs pulses, with thermal resistance from junction to ambient at 380 K/W under standard mounting conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	35.3 V to 36.7 V at I_Z = 2 mA - defines stable regulation range for feedback or reference use
Differential Resistance (r_dif)	80 Ω typical at I_Z = 2 mA - determines output voltage variation under load current changes
Temperature Coefficient (S_Z)	26.0 mV/K typical at I_Z = 2 mA - quantifies voltage drift per degree Celsius in precision references
Reverse Current (I_R)	50 nA max at V_R = 25.2 V (0.7 × V_Znom) - ensures minimal leakage in high-impedance bias networks
Total Power Dissipation (P_tot)	500 mW at T_amb = 50 °C - sets maximum continuous DC power handling in PCB-mounted applications
Junction-to-Ambient Thermal Resistance	380 K/W - determines temperature rise above ambient at given power, critical for reliability in enclosed environments

Pinout & Package

Hermetically sealed axial-leaded glass package: SOD27 (JEDEC DO-35), cathode indicated by black band. No active terminals beyond anode and cathode; bidirectional polarity marking defines unidirectional reverse-breakdown operation.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-voltage side in reverse-bias configuration	Connected to circuit ground or lower potential node when used as shunt regulator
Cathode	Reverse breakdown terminal / high-voltage side in shunt regulation	Connected to input voltage source; clamps voltage at V_Z when reverse biased above threshold

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables cost-effective voltage referencing where tight regulation is not required, e.g., overvoltage detection thresholds
Non-repetitive peak reverse power: 40 W	Supports transient surge suppression in low-energy protection circuits without external series limiting resistors
Low reverse leakage: ≤50 nA at 0.7×V_Znom	Maintains accuracy in high-impedance divider networks and battery-powered sensor references
Wide operating temperature: −65 °C to +200 °C	Validates use in automotive engine compartments and industrial control enclosures without derating

Applications

Power Supply Feedback Loop

Sensor Bias Reference

Use Scenario: Stabilizing output voltage of linear regulators via TL431-like feedback network with resistor divider.

IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 36 V threshold for error amplifier comparison.

Use Value: Maintains ±1.4 V regulation window (35.3–36.7 V) under 2 mA test current, enabling predictable loop gain and stability margins.

Use Scenario: Providing stable excitation voltage to bridge-based pressure sensors in HVAC control units.

IC Role / Device Role / Timing Role: Low-drift DC bias source ensuring consistent sensor output scaling across temperature.

Use Value: 26.0 mV/K temperature coefficient minimizes offset drift, reducing calibration frequency in field-deployed units.

Overvoltage Clamp Circuit

Microcontroller Reset Threshold

Use Scenario: Protecting 3.3 V logic inputs from accidental 24 V transients in industrial I/O modules.

IC Role / Device Role / Timing Role: Passive clamp limiting voltage to safe level using series resistor and Zener breakdown.

Use Value: 40 W non-repetitive peak power rating absorbs 100 μs surges without degradation, extending system MTBF.

Use Scenario: Generating reliable reset signal for ARM Cortex-M0 microcontrollers during brown-out events.

IC Role / Device Role / Timing Role: Voltage threshold detector triggering POR circuitry when supply drops below 36 V reference.

Use Value: 50 nA max reverse leakage prevents loading of high-impedance reset comparator inputs, preserving timing accuracy.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4738A	33 V nominal, ±5%, DO-41 package, 1.0 W P_tot, 9 Ω r_dif	Higher power rating but lower voltage; requires board layout change for lead pitch and thermal pad	Select when higher power margin or lower dynamic impedance is needed, accepting larger footprint
BZX55-C36	36 V nominal, ±5%, DO-35 package, 500 mW P_tot, 100 Ω r_dif typical	Nearly identical form factor and rating; slightly higher differential resistance affects regulation precision	Choose for direct drop-in replacement where 20 Ω higher r_dif is acceptable in target circuit

Compared with BZX79-C36,143, the 1N4738A offers higher power and lower impedance but requires mechanical redesign, while the BZX55-C36 matches package and voltage but trades 20 Ω higher dynamic impedance for broader availability in legacy designs.

Availability

BZX79-C36,143 is available at Aetrix Electronics and suitable for power supply feedback loops, sensor bias references, overvoltage clamp circuits, and microcontroller reset threshold generation requiring stable component supply across automotive, industrial, and computing platforms.

Supply support for BZX79-C36,143 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, formed in 2017 from the former NXP Standard Products division, serving automotive, industrial, computing, and consumer markets.

The BZX79 series belongs to Nexperia's voltage regulator diode product line, designed specifically for low-power, cost-sensitive shunt regulation and voltage reference applications in space-constrained through-hole assemblies.

FAQ

What is the Zener test current for BZX79-C36,143?

The Zener voltage is specified at I_Ztest = 2 mA, as confirmed in Table 2 of the official Nexperia datasheet. This current establishes the operating point for measuring V_Z, differential resistance, and temperature coefficient. Operation outside this condition alters voltage and impedance values predictably per the device's IV curve.

Is BZX79-C36,143 RoHS compliant?

Yes, BZX79-C36,143 complies with EU RoHS Directive 2011/65/EU and subsequent amendments. Nexperia confirms lead-free termination and halogen-free construction for this SOD27-packaged device, with full compliance documentation available via their product change notifications portal.

Can BZX79-C36,143 be used in surface-mount designs?

No - BZX79-C36,143 uses an axial-leaded SOD27 (DO-35) glass package intended for through-hole mounting only. It lacks solder pads or terminations compatible with reflow or wave soldering processes. For SMT equivalents, consider Nexperia's PZM series or ON Semiconductor's NZ9F36V.

What is the maximum reverse voltage before breakdown?

The device begins controlled Zener breakdown at its nominal 36 V rating, with guaranteed regulation between 35.3 V and 36.7 V at 2 mA. Below this range, reverse leakage remains ≤50 nA at 25.2 V (0.7 × V_Znom). Sustained reverse voltage exceeding 36.7 V risks thermal runaway if power dissipation exceeds 500 mW limits.

BZX79-C36,143 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):: 36 V

Tolerance:: ±5%

Power - Max:: 400 mW

Impedance (Max) (Zzt):: 90 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 25.2 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-C36,143 FAQ

1.How can I place an order for BZX79-C36,143 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX79-C36,143 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-C36,143 reliable?

The price and inventory of BZX79-C36,143 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C36,143 is usually 5 days.

3.What payment methods are accepted for BZX79-C36,143?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C36,143 transactions.

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4.How is shipping managed for BZX79-C36,143?

BZX79-C36,143 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX79-C36,143 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-C36,143?

For technical support, including BZX79-C36,143 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C36,143 requirements.

6.How does Aetrix verify that BZX79-C36,143 is sourced from the original manufacturer or authorized distributors?

All BZX79-C36,143 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-C36,143 meets industry standards.

7.What is the process for return or replacement of BZX79-C36,143?

All BZX79-C36,143 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C36,143, 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-C36,143 part is unused and in its original packaging.

Return procedure for BZX79-C36,143:

1.Submit a request within 90 days.

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

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