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

Nexperia USA Inc. BZX84-B36,215

Name: BZX84-B36,215
Brand: Nexperia USA Inc.
SKU: BZX84-B36,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B36,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BZX84-B36,215.pdf

Description:: DIODE ZENER 36V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,655

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Product details

Overview

BZX84-B36,215 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 36 V nominal breakdown voltage at 2 mA test current, 250 mW total power dissipation, and 0.9 V forward voltage at 10 mA - used for precision low-power voltage reference and overvoltage protection in DC power rails.

For engineers reviewing the BZX84-B36,215 datasheet, BZX84-B36,215 pinout, BZX84-B36,215 application, or BZX84-B36,215 equivalent, key selection criteria include Zener voltage tolerance (±2 %), thermal resistance (330 K/W junction-to-solder-point), non-repetitive peak reverse power (40 W), differential resistance (350 Ω max), and temperature coefficient (±0.05 mV/K).

Technical Context

This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage by conducting reverse current above its specified Zener breakdown threshold. Its 36 V nominal working voltage is defined at I_Z = 2 mA with ±2 % tolerance, and it exhibits a typical temperature coefficient of ±0.05 mV/K over 25–150 °C.

The SOT23 package enables surface-mount integration with low thermal resistance (R_th(j-sp) = 330 K/W), while its 40 W non-repetitive peak reverse power rating supports transient surge suppression in low-energy circuits without external clamping components.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	36 V nominal at I_Z = 2 mA; defines regulated output voltage under stable bias conditions
Zener Tolerance	±2 %; ensures voltage accuracy within ±0.72 V across production lot
Total Power Dissipation	250 mW at T_amb ≤ 25 °C on FR4 PCB; sets maximum continuous DC power handling
Differential Resistance	350 Ω max at I_Z = 2 mA; determines regulation stiffness against load current variation
Forward Voltage	0.9 V max at I_F = 10 mA; defines conduction drop when used in forward-biased polarity
Non-repetitive Peak Power	40 W for t_p = 100 μs; enables short-duration transient suppression without failure
Junction Temperature	150 °C max; constrains thermal design margin in enclosed or high-ambient environments

Pinout & Package

Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with standard footprint per Figure 12 (reflow) and Figure 13 (wave soldering); dimensions 2.9 × 1.3 × 1.0 mm (L × W × H).

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-bias terminal; connects to lower-potential side in Zener operation
2	Not Connected (n.c.)	Internally unconnected; no electrical function; must remain floating
3	Cathode (K)	Reverse-bias terminal; connects to higher-potential side in Zener operation

Key Features

Feature	Design Value
Low-power regulation	250 mW P_tot enables use in battery-powered and space-constrained systems without heatsinking
±2 % voltage tolerance	Meets tight reference requirements for analog sensing, ADC reference buffering, and feedback loop stability
3-lead SOT23 package	Standardized footprint compatible with automated pick-and-place and reflow processes
Non-repetitive surge capability	40 W peak power rating allows single-event ESD/inductive kick suppression without external TVS
Thermal performance	330 K/W junction-to-solder-point resistance supports reliable operation on standard FR4 PCBs

Applications

Power Supply Reference

Overvoltage Clamp

Use Scenario: Providing stable 36 V reference for op-amp comparators monitoring DC bus voltage in industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise trip threshold independent of supply ripple.

Use Value: ±2 % tolerance ensures comparator activation occurs within ±0.72 V of nominal 36 V, minimizing false triggers.

Use Scenario: Protecting microcontroller GPIO pins from 40 V transients induced by relay coil de-energization in HVAC control boards.

IC Role / Device Role / Timing Role: Passive clamp limiting voltage excursion to 36 V + diode forward drop during surge events.

Use Value: 40 W non-repetitive peak power rating absorbs 100 μs surges without degradation, eliminating need for discrete TVS.

Sensor Excitation Bias

ADC Input Protection

Use Scenario: Biasing resistive temperature detector (RTD) bridges requiring stable excitation voltage in medical thermometry front-ends.

IC Role / Device Role / Timing Role: Low-noise voltage source delivering constant current through bridge arms via series resistor.

Use Value: 350 Ω max differential resistance minimizes voltage shift under varying bridge current loads, preserving measurement linearity.

Use Scenario: Preventing damage to 12-bit SAR ADC input stages exposed to accidental 30 V connection in test equipment signal conditioning paths.

IC Role / Device Role / Timing Role: Reverse-biased limiter clamping input to 36 V before internal ESD structures activate.

Use Value: 0.9 V forward voltage ensures safe forward conduction if polarity is reversed, avoiding latch-up or burnout.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5245B	36 V nominal, ±5 % tolerance, 350 mW P_tot, SOT23 package	Looser voltage accuracy; higher power rating allows marginally higher continuous dissipation	Select when cost sensitivity outweighs ±2 % tolerance requirement and board layout permits same footprint
Vishay BZX84-C36	36 V nominal, ±5 % tolerance, 250 mW P_tot, identical SOT23 package	Reduced voltage accuracy increases reference uncertainty to ±1.8 V; otherwise pin- and form-compatible	Choose for legacy designs where ±5 % is acceptable and cross-supplier sourcing flexibility is prioritized

Compared with BZX84-B36,215, MMBZ5245B trades tighter voltage control for higher power margin, while BZX84-C36 retains identical thermal and mechanical behavior but sacrifices 2.5× voltage accuracy - making the BZX84-B36,215 optimal for precision reference roles where ±0.72 V tolerance is critical.

Availability

BZX84-B36,215 is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) analog input protection, and embedded power management subsystems requiring stable component supply and long-term obsolescence mitigation.

Supply support for BZX84-B36,215 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 semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.

The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered for low-power voltage regulation and transient suppression in consumer, industrial, and communication equipment where compact size and parametric consistency are essential.

FAQ

What is the Zener test current for BZX84-B36,215 and why does it matter?

The Zener voltage is specified at I_Z = 2 mA, which establishes the operating point for guaranteed 36 V ±2 % regulation. Using significantly lower currents increases differential resistance and voltage drift, while higher currents risk exceeding thermal limits - so biasing near 2 mA ensures optimal accuracy and stability in reference applications.

Can BZX84-B36,215 be used in place of a 33 V or 39 V Zener diode?

No - BZX84-B36,215 is specifically characterized for 36 V breakdown at 2 mA; substituting with 33 V or 39 V variants alters regulation threshold by ≥3 V, potentially causing undervoltage lockout or overvoltage damage in sensitive circuits. Always match nominal Zener voltage to system design requirements.

How does the not-connected (n.c.) pin affect PCB layout and routing?

Pin 2 is internally unconnected and must remain electrically isolated - no trace, pad, or copper pour should contact it. This avoids unintended parasitic coupling or solder bridging that could compromise reliability; standard SOT23 footprints accommodate this by omitting metal under pin 2 per Nexperia's recommended land pattern.

Is BZX84-B36,215 qualified for automotive applications?

No - per Nexperia's Revision 7 datasheet (January 2023), the BZX84 series is explicitly designated as non-automotive qualified. Automotive use requires -Q qualified alternatives such as BZX84-Q series, which undergo additional AEC-Q200 stress testing and have distinct part numbering and qualification documentation.

BZX84-B36,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZX84

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

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

Tolerance:: ±2%

Power - Max:: 250 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 ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX84-B36,215 FAQ

1.How can I place an order for BZX84-B36,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B36,215 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 BZX84-B36,215 reliable?

The price and inventory of BZX84-B36,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B36,215 is usually 5 days.

3.What payment methods are accepted for BZX84-B36,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B36,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B36,215?

BZX84-B36,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B36,215 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 BZX84-B36,215?

For technical support, including BZX84-B36,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B36,215 requirements.

6.How does Aetrix verify that BZX84-B36,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-B36,215 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 BZX84-B36,215 meets industry standards.

7.What is the process for return or replacement of BZX84-B36,215?

All BZX84-B36,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B36,215, 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 BZX84-B36,215 part is unused and in its original packaging.

Return procedure for BZX84-B36,215:

1.Submit a request within 90 days.

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

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