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

Nexperia USA Inc. BZX79-C36,113

Name: BZX79-C36,113
Brand: Nexperia USA Inc.
SKU: BZX79-C36,113
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX79-C36,113

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX79-C36,113.pdf

Description:: DIODE ZENER 36V 400MW ALF2

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Product details

Overview

BZX79-C36,113 from Nexperia is a ±5% tolerance Zener voltage regulator diode with nominal 36 V breakdown voltage at 2 mA test current, 80 Ω typical differential resistance, and −35 mV/K temperature coefficient at 2 mA. It operates in hermetically sealed SOD27 (DO-35) glass package, rated for 500 mW total power dissipation at 50 °C ambient, and serves as a low-power voltage reference in analog signal conditioning and power supply feedback networks.

For engineers reviewing the BZX79-C36,113 datasheet, BZX79-C36,113 pinout, BZX79-C36,113 application, or BZX79-C36,113 equivalent, this page delivers verified electrical parameters, thermal behavior, reverse leakage limits at 25.2 V, non-repetitive surge capability (45 A peak), and validated alternatives for precision reference design.

Technical Context

This Zener diode functions as a two-terminal shunt voltage regulator, maintaining stable output voltage across variable load currents by operating in reverse breakdown. Its 36 V nominal Zener voltage is specified at I_Ztest = 2 mA, with differential resistance of 80 Ω (typ.) and 350 Ω (max.), enabling predictable regulation slope under dynamic load conditions.

The device exhibits a negative temperature coefficient of −35 mV/K at 2 mA, indicating decreasing Zener voltage with rising junction temperature - critical for thermal drift analysis in reference circuits. Reverse leakage is limited to 50 nA at V_R = 25.2 V (0.7 × V_Znom), ensuring minimal quiescent current in high-impedance bias networks.

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 regulated output range for feedback or reference use
Differential Resistance (r_dif)	80 Ω (typ.), 350 Ω (max.) at I_Z = 2 mA - determines output impedance and load regulation error
Temperature Coefficient (S_Z)	−35 mV/K (typ.) at I_Z = 2 mA - quantifies voltage drift per degree Celsius rise in junction temperature
Reverse Leakage (I_R)	50 nA max. at V_R = 25.2 V (0.7 × V_Znom) - sets minimum bias current requirement in high-Z circuits
Non-repetitive Peak Current (I_ZSM)	0.8 A at t_p = 100 μs - supports transient overvoltage clamping without failure
Total Power Dissipation (P_tot)	500 mW at T_amb = 50 °C - defines maximum continuous DC power handling on standard PCB
Junction-to-Ambient R_th	380 K/W - enables thermal derating calculation for elevated ambient temperatures

Pinout & Package

Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking; lead pitch not applicable (two-terminal discrete device).

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-side connection in shunt configuration	Connected to circuit ground or lower potential node when used as voltage reference
Cathode	Zener breakdown terminal / regulated output node	Connected to input voltage source via series resistor; provides stable 36 V reference point

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables cost-effective voltage referencing where tight regulation is not required, e.g., power supply sensing
Hermetic SOD27 glass package	Ensures long-term stability and moisture resistance in industrial environments without conformal coating
40 W non-repetitive peak power rating	Supports transient suppression in low-energy surge events (e.g., ESD coupling paths)
Low 50 nA leakage at 70% V_Z	Minimizes error in high-impedance divider networks and battery-powered reference circuits
−35 mV/K tempco at 2 mA	Allows predictable thermal compensation when paired with positive-tempco components in reference designs

Applications

Power Supply Feedback

Overvoltage Protection

Use Scenario: Regulating output voltage in linear or switching power supplies using optocoupler feedback loops.

IC Role / Device Role / Timing Role: Zener diode provides precise 36 V reference to TL431 or optocoupler LED anode, setting feedback threshold.

Use Value: Stable 36 V reference ensures ±1.5% output regulation accuracy despite line/load variation and 50 °C ambient operation.

Use Scenario: Clamping transient spikes on 24 V DC rails in industrial control modules.

IC Role / Device Role / Timing Role: Shunt element that conducts above 36 V to divert excess energy away from sensitive downstream ICs.

Use Value: 0.8 A non-repetitive surge current rating handles 100 μs transients without degradation, preserving system reliability.

Reference Voltage Source

Signal Level Translation

Use Scenario: Generating stable bias voltages for op-amp input stages in sensor signal conditioning circuits.

IC Role / Device Role / Timing Role: Provides fixed 36 V reference for resistive divider networks feeding precision ADC references or comparator thresholds.

Use Value: 50 nA leakage at 25.2 V ensures <0.1% error in 1 MΩ divider arms, critical for 12-bit+ measurement accuracy.

Use Scenario: Level-shifting logic signals between 3.3 V microcontrollers and 36 V fieldbus interfaces.

IC Role / Device Role / Timing Role: Zener clamp limits input voltage to 36 V while allowing normal logic swing below breakdown threshold.

Use Value: 80 Ω differential resistance ensures fast recovery from overvoltage events, maintaining signal integrity during bus faults.

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 W P_tot, 9 Ω r_dif	Higher power rating but lower voltage; unsuitable for 36 V systems without series stacking	Select only if 33 V reference suffices and board space allows larger DO-41 footprint
BZX84-C36	36 V nominal, ±5%, SOT-23 package, 300 mW P_tot, 90 Ω r_dif	Surface-mount alternative with lower power rating; requires PCB rework for through-hole replacement	Choose for automated assembly or space-constrained designs where thermal margin permits 300 mW operation

Compared with BZX79-C36,113, the 1N4738A offers higher power handling but mismatches the 36 V requirement, while the BZX84-C36 matches voltage and tolerance but sacrifices 40% power capacity and requires SMT layout changes - making the original optimal for through-hole 36 V reference designs needing 500 mW thermal headroom.

Availability

BZX79-C36,113 is available at Aetrix Electronics and suitable for industrial power supply feedback, analog sensor reference circuits, and 24 V DC overvoltage protection requiring stable component supply and long-lifecycle support.

Supply support for BZX79-C36,113 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 and industrial markets.

The BZX79 series belongs to Nexperia's legacy Zener diode portfolio designed for cost-sensitive, low-power voltage regulation and reference applications in consumer, computing, and industrial electronics.

FAQ

What is the maximum continuous reverse current this diode can handle at 36 V?

The BZX79-C36,113 is not rated for continuous reverse current at its Zener voltage - it operates in controlled breakdown. At V_R = 36 V, power dissipation would exceed 500 mW even at 14 mA, violating absolute maximum ratings. Design must limit I_Z using a series resistor to maintain P_tot ≤ 500 mW at the operating ambient temperature.

Can this diode be used in parallel for higher current capability?

No - Zener diodes exhibit manufacturing variations in V_Z and r_dif, causing unequal current sharing. Parallel connection risks thermal runaway in the unit with lowest V_Z. For higher current, use a single higher-power Zener or active regulation with a transistor pass element.

How does the −35 mV/K temperature coefficient affect circuit accuracy over −40 °C to +85 °C?

Over a 125 °C junction temperature range, the Zener voltage shifts by approximately −4.4 V (−35 mV/K × 125 K), resulting in ~12% deviation from 36 V nominal. This must be compensated via circuit topology (e.g., complementary tempcos) or calibrated out in closed-loop systems.

Is the SOD27 package compatible with wave soldering processes?

Yes - the hermetic glass SOD27 package is rated for standard wave soldering profiles with peak temperatures up to 260 °C for ≤10 seconds. Lead finish is matte tin, and thermal resistance data confirms safe operation under typical PCB thermal mass conditions.

BZX79-C36,113 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):: 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-C36,113 FAQ

1.How can I place an order for BZX79-C36,113 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX79-C36,113 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-C36,113 reliable?

The price and inventory of BZX79-C36,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C36,113 is usually 5 days.

3.What payment methods are accepted for BZX79-C36,113?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C36,113 transactions.

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4.How is shipping managed for BZX79-C36,113?

BZX79-C36,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX79-C36,113 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-C36,113?

For technical support, including BZX79-C36,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C36,113 requirements.

6.How does Aetrix verify that BZX79-C36,113 is sourced from the original manufacturer or authorized distributors?

All BZX79-C36,113 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-C36,113 meets industry standards.

7.What is the process for return or replacement of BZX79-C36,113?

All BZX79-C36,113 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C36,113, 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-C36,113 part is unused and in its original packaging.

Return procedure for BZX79-C36,113:

1.Submit a request within 90 days.

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

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