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

Diodes Incorporated BZX84C36W-7-F

Name: BZX84C36W-7-F
Brand: Diodes Incorporated
SKU: BZX84C36W-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84C36W-7-F

Manufacturer:: Diodes Incorporated

Category:: Single Zener Diodes

Package:: SC-70, SOT-323

Datasheet:: BZX84C36W-7-F.pdf

Description:: DIODE ZENER 36V 200MW SOT323

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Product details

Overview

BZX84C36W-7-F from Diodes Incorporated is a 36 V, 200 mW surface-mount Zener diode in SOT-323 package, rated for 2 mA test current with 34–38 V zener voltage range, 90 Ω dynamic impedance at 2 mA, and ±0.1 µA reverse leakage at 25.2 V, used for precision voltage regulation and overvoltage protection in low-power analog circuits.

For engineers reviewing the BZX84C36W-7-F datasheet, BZX84C36W-7-F pinout, BZX84C36W-7-F application, or BZX84C36W-7-F equivalent, key selection criteria include nominal zener voltage tolerance (±5.6%), thermal resistance (625 K/W), RoHS-compliant matte tin plating, and ultra-small footprint suitability for space-constrained PCBs.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. It features planar die construction for consistent parametric performance and is characterized at 25 °C with specified zener voltage, dynamic impedance, and temperature coefficient of +30.4 to +37.4 mV/°C.

The device exhibits low capacitance (<2 pF typical at 1 V reverse bias) and supports pulse operation up to 200 mW on FR4 boards with recommended pad layout. Its moisture sensitivity level is 1 per J-STD-020D, enabling standard reflow assembly without baking.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	36.0 V nominal, 34.0–38.0 V range at I_ZT = 2 mA - defines regulated output voltage window
Power Dissipation (P_D)	200 mW - maximum continuous power handling on FR4 board with specified pad layout
Zener Impedance (Z_ZT)	90 Ω at I_ZT = 2 mA - determines voltage regulation stiffness under load variation
Reverse Leakage (I_R)	0.1 µA max at V_R = 25.2 V - ensures minimal quiescent current in standby regulation
Temp Coefficient (α_VZ)	+30.4 to +37.4 mV/°C at I_ZT = 5 mA - quantifies drift of regulation point across operating temperature
Package	SOT-323 - 2.2 mm × 1.35 mm × 0.9 mm footprint with single-row 3-terminal configuration

Pinout & Package

SOT-323 package: three-terminal surface-mount outline with anode, cathode, and case (cathode marked by band). Molded green compound, UL 94V-0 rated, 0.006 g weight.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Forward conduction terminal	Connected to lower potential node during regulation; enables reverse-bias operation when cathode is at higher potential
Cathode (Pin 2)	Zener breakdown terminal	Connected to regulated voltage rail; polarity marking (band) identifies this terminal on top view
Case / Heat Sink (Pin 3)	Thermal path and mechanical anchor	Not electrically isolated; serves as primary thermal interface to PCB copper for junction-to-ambient heat dissipation

Key Features

Feature	Design Value
Planar die construction	Ensures tight parameter distribution and long-term stability of zener voltage and impedance
Lead-free matte tin plating	Enables compatibility with Pb-free reflow profiles while maintaining solderability per MIL-STD-202
Green molding compound	Halogen-free, antimony-free material compliant with environmental directives and flammability UL 94V-0
Moisture sensitivity Level 1	Eliminates need for pre-bake prior to reflow, reducing manufacturing complexity and cost

Applications

Power Supply Reference

Overvoltage Clamp

Use Scenario: Providing stable 36 V reference for feedback loop in DC-DC converter ICs or linear regulators.

IC Role / Device Role / Timing Role: Voltage reference element establishing precise output setpoint via feedback divider network.

Use Value: Maintains ±5.6% regulation accuracy across temperature and load, minimizing output drift in 12–48 V industrial power modules.

Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 36 V in sensor interface circuits.

IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground when input exceeds zener breakdown threshold.

Use Value: Limits peak voltage to ≤38 V with <0.1 µA leakage below clamp threshold, preserving signal integrity in 3.3 V/5 V logic domains.

ADC Voltage Reference

Signal Level Translation

Use Scenario: Generating accurate 36 V reference for high-resolution SAR ADC reference buffers in data acquisition systems.

IC Role / Device Role / Timing Role: Precision voltage source stabilizing reference input to ADC driver amplifier stage.

Use Value: Delivers <90 Ω dynamic impedance and +30.4 mV/°C tempco, enabling <0.1% full-scale error contribution over –40 to +85 °C.

Use Scenario: Biasing photodiode or op-amp input stage to fixed 36 V common-mode voltage in analog front-end designs.

IC Role / Device Role / Timing Role: DC bias generator establishing known operating point for active circuitry requiring elevated common-mode voltage.

Use Value: Provides stable, low-noise 36 V node with <2 pF capacitance, avoiding signal coupling or bandwidth degradation in MHz-range amplifiers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5257BS-7-F	36 V nominal, 200 mW, SOT-323, but 100 Ω Z_ZT at 5 mA and +35 mV/°C tempco	Higher dynamic impedance reduces regulation precision; tighter tempco improves thermal stability	Prefer for thermally stable references where impedance tolerance is acceptable
BZX84-C36LT1G	36 V nominal, 350 mW, SOT-23, 100 Ω Z_ZT at 5 mA, +35 mV/°C tempco, higher power rating	Larger SOT-23 footprint; suitable for higher-current clamping but incompatible with ultra-dense layouts	Choose when >200 mW surge handling is required and board area permits larger package

Compared with MMBZ5257BS-7-F and BZX84-C36LT1G, BZX84C36W-7-F offers lowest zener impedance (90 Ω) in SOT-323, making it optimal for high-precision low-power regulation where board space is constrained and thermal drift must be balanced against regulation stiffness.

Availability

BZX84C36W-7-F is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface protection circuits, and precision analog reference designs requiring stable component supply and full traceability.

Supply support for BZX84C36W-7-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, industry-standard components for power management, signal integrity, and protection applications.

The BZX84 series belongs to Diodes' general-purpose Zener diode product line, designed specifically for compact, low-power voltage regulation and clamping in consumer, industrial, and computing equipment where SMT scalability and RoHS compliance are essential.

FAQ

What is the maximum reverse voltage before breakdown for BZX84C36W-7-F?

The device exhibits a nominal zener voltage of 36.0 V with a guaranteed range of 34.0–38.0 V at 2 mA test current. Breakdown begins within this range; operation above 38.0 V risks exceeding absolute maximum ratings and may cause irreversible damage if power dissipation exceeds 200 mW.

Can BZX84C36W-7-F be used in place of a 33 V Zener diode?

No - its 34–38 V zener range does not overlap with typical 33 V Zener specifications (e.g., BZX84C33W: 31–35 V). Substituting would result in incorrect regulation voltage and potential system malfunction; always match nominal voltage and tolerance bands per design requirements.

Is the SOT-323 package compatible with standard reflow soldering profiles?

Yes - the device has moisture sensitivity level 1 per J-STD-020D and uses lead-free matte tin plating qualified to MIL-STD-202 Method 208, supporting standard Pb-free reflow profiles without pre-baking or special handling.

Does BZX84C36W-7-F have polarity marking on the package?

Yes - the cathode is identified by a visible band on the top surface of the SOT-323 package. Pin 2 (cathode) must be connected to the higher-potential node during reverse-bias operation to achieve zener breakdown and regulation.

BZX84C36W-7-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 36 V

Tolerance:: ±6%

Power - Max:: 200 mW

Impedance (Max) (Zzt):: 90 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 25.2 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: -65°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

BZX84C36W-7-F FAQ

1.How can I place an order for BZX84C36W-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84C36W-7-F 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 BZX84C36W-7-F reliable?

The price and inventory of BZX84C36W-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C36W-7-F is usually 5 days.

3.What payment methods are accepted for BZX84C36W-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C36W-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84C36W-7-F?

BZX84C36W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84C36W-7-F 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 BZX84C36W-7-F?

For technical support, including BZX84C36W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C36W-7-F requirements.

6.How does Aetrix verify that BZX84C36W-7-F is sourced from the original manufacturer or authorized distributors?

All BZX84C36W-7-F 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 BZX84C36W-7-F meets industry standards.

7.What is the process for return or replacement of BZX84C36W-7-F?

All BZX84C36W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C36W-7-F, 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 BZX84C36W-7-F part is unused and in its original packaging.

Return procedure for BZX84C36W-7-F:

1.Submit a request within 90 days.

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

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