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

Nexperia USA Inc. BZX84-C3V6,235

Name: BZX84-C3V6,235
Brand: Nexperia USA Inc.
SKU: BZX84-C3V6,235
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-C3V6,235

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-C3V6,235.pdf

Description:: DIODE ZENER 3.6V 250MW TO236AB

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Product details

Overview

BZX84-C3V6,235 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 3.6 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and 90 Ω maximum differential resistance - used for precision low-power voltage reference and overvoltage protection in sensor biasing and microcontroller I/O rail clamping circuits.

For engineers reviewing the BZX84-C3V6,235 datasheet, BZX84-C3V6,235 pinout, BZX84-C3V6,235 application, or BZX84-C3V6,235 equivalent, key selection criteria include Zener voltage tolerance (±5 %), thermal resistance (330 K/W to solder point), non-repetitive peak reverse power (40 W), and cathode-anode polarity confirmation for PCB layout and ESD-safe placement.

Technical Context

This Zener diode operates in reverse-biased breakdown mode with a nominal 3.6 V regulation voltage at 5 mA test current, exhibiting a temperature coefficient of −3.5 mV/K and typical reverse leakage ≤5 μA at 1 V reverse bias. Its low 90 Ω dynamic impedance ensures stable regulation under small-signal load variations.

The device uses silicon planar epitaxial construction for repeatable breakdown characteristics and integrates into compact SMT designs where space-constrained voltage referencing or transient suppression is required - such as on analog front-end supply rails or ADC reference buffers.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	3.40 V to 3.80 V at I_Z = 5 mA - defines regulation window for 3.3 V system rail stabilization
Differential Resistance (r_dif)	≤90 Ω - limits output voltage shift under ±1 mA load change, critical for reference accuracy
Total Power Dissipation (P_tot)	250 mW at T_amb ≤ 25 °C - sets maximum continuous DC power in FR4 PCB mounting
Non-repetitive Peak Reverse Power (P_ZSM)	40 W for t_p = 100 μs - enables transient surge suppression up to 6 A peak reverse current
Forward Voltage (V_F)	≤0.9 V at I_F = 10 mA - confirms low-loss forward conduction for bidirectional clamp configurations
Junction Temperature (T_j)	−55 °C to +150 °C - supports operation in industrial ambient environments without derating below −40 °C
Thermal Resistance (R_th(j-sp))	330 K/W to cathode solder point - determines thermal rise per watt in standard SOT23 footprint

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 1.3 mm × 2.9 mm footprint, 1.1 mm height, and gull-wing lead form compatible with reflow and wave soldering per IPC-7351B.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Connected to lower-potential node in reverse-bias configuration; must be routed away from high-noise digital traces
2	Not Connected (n.c.)	Internal die pad with no electrical bond; must remain unconnected on PCB to avoid parasitic coupling
3	Cathode (K)	Connected to regulated voltage node; serves as primary thermal path to PCB copper pour via solder point

Key Features

Feature	Design Value
±5 % Zener voltage tolerance	Enables cost-effective regulation where tight tolerance is not required - e.g., non-critical biasing in consumer-grade sensors
250 mW power rating in SOT23	Supports continuous regulation in space-limited applications without external heatsinking
40 W non-repetitive peak power	Provides robust ESD and lightning-induced transient immunity when placed across IC supply pins
Low 90 Ω dynamic impedance	Maintains <±10 mV output variation under 1 mA load step, suitable for ADC reference buffering
−55 °C to +150 °C operating range	Validates use in automotive under-hood modules and industrial motor control enclosures without derating

Applications

Microcontroller I/O Protection

Sensor Bias Reference

Use Scenario: Clamping 3.3 V GPIO lines against ESD events and bus overvoltage in embedded controllers.

IC Role / Device Role / Timing Role: Zener diode configured in reverse-bias between I/O pin and ground to shunt transients above 3.6 V.

Use Value: Limits pin voltage to ≤3.8 V during 8 kV HBM ESD strikes, preventing latch-up in ARM Cortex-M peripherals.

Use Scenario: Providing stable bias voltage for analog output sensors (e.g., pressure transducers) in battery-powered IoT nodes.

IC Role / Device Role / Timing Role: Low-power Zener reference replacing higher-cost bandgap ICs in 3.3 V signal conditioning paths.

Use Value: Delivers 3.6 V ±0.2 V regulation with <1 mV/mA line regulation, enabling 12-bit ADC accuracy without trimming.

ADC Reference Stabilization

Power Rail Clamp

Use Scenario: Stabilizing internal reference voltage for SAR ADCs in portable medical devices.

IC Role / Device Role / Timing Role: Shunt regulator connected to REF+ input to suppress noise and ripple from LDO outputs.

Use Value: Reduces 100 kHz switching noise by >30 dB via 90 Ω impedance, improving ENOB by 0.8 bits at 1 MSPS.

Use Scenario: Protecting 3.3 V logic rails from inductive kickback in relay driver circuits.

IC Role / Device Role / Timing Role: Cathode tied to VCC, anode to ground - clamps positive surges exceeding 3.6 V.

Use Value: Absorbs 40 W transient energy within 100 μs, limiting rail overshoot to <4.0 V during 100 mA coil de-energization.

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 MMBZ5226BS-7-F	3.3 V nominal, ±5 %, 350 mW P_tot, SOT23 package	Lower regulation voltage; higher power rating allows greater surge margin	Select when 3.3 V clamping is required and board layout permits 350 mW thermal budget
Vishay BZX84-C3V9-7-F	3.9 V nominal, ±5 %, identical SOT23 package and 250 mW rating	Higher Zener voltage shifts clamping threshold upward; same thermal behavior	Choose for systems requiring tighter margin above 3.3 V rail - e.g., 3.6 V brown-out detection

Compared with BZX84-C3V6,235, the MMBZ5226BS-7-F offers higher power handling but lower regulation voltage, while the BZX84-C3V9-7-F maintains identical thermal and packaging characteristics but shifts clamping to 3.9 V - making it suitable for designs needing increased headroom above nominal 3.3 V supplies.

Availability

BZX84-C3V6,235 is available at Aetrix Electronics and suitable for microcontroller I/O protection, sensor bias reference, and ADC reference stabilization requiring stable component supply across high-mix, low-volume production runs.

Supply support for BZX84-C3V6,235 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions optimized for efficiency, size, and cost in mass-market electronics.

The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered specifically for low-power voltage regulation and transient suppression in consumer, industrial, and computing applications with strict SMT footprint constraints.

FAQ

What is the maximum reverse current before breakdown for BZX84-C3V6,235?

At 1 V reverse bias and 25 °C, the reverse current is ≤5 μA. This low leakage ensures minimal quiescent power draw in always-on sensor bias circuits and prevents unintended loading of high-impedance reference nodes.

Can BZX84-C3V6,235 be used in parallel for higher power dissipation?

No - Zener diodes exhibit negative temperature coefficients and mismatched breakdown voltages; paralleling causes current hogging and thermal runaway. Use a single device within its 250 mW limit or select a higher-rated package like SOD-123 for >300 mW needs.

Is the n.c. pin (pin 2) electrically isolated or thermally coupled?

Pin 2 is internally unconnected with no bond wire or die attachment; it is electrically isolated and provides no thermal path. PCB layout must omit copper connection to avoid parasitic capacitance or accidental shorting during reflow.

How does temperature affect regulation voltage stability?

With a temperature coefficient of −3.5 mV/K, the Zener voltage decreases by ~0.35 V over a 100 °C rise (25 °C to 125 °C). This drift is predictable and acceptable in non-precision applications like overvoltage clamping, but requires compensation in metrology-grade references.

BZX84-C3V6,235 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):: 3.6 V

Tolerance:: ±5%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 90 Ohms

Current - Reverse Leakage @ Vr:: 5 µA @ 1 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-C3V6,235 FAQ

1.How can I place an order for BZX84-C3V6,235 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-C3V6,235 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-C3V6,235 reliable?

The price and inventory of BZX84-C3V6,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C3V6,235 is usually 5 days.

3.What payment methods are accepted for BZX84-C3V6,235?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C3V6,235 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-C3V6,235?

BZX84-C3V6,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-C3V6,235 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-C3V6,235?

For technical support, including BZX84-C3V6,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C3V6,235 requirements.

6.How does Aetrix verify that BZX84-C3V6,235 is sourced from the original manufacturer or authorized distributors?

All BZX84-C3V6,235 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-C3V6,235 meets industry standards.

7.What is the process for return or replacement of BZX84-C3V6,235?

All BZX84-C3V6,235 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C3V6,235, 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-C3V6,235 part is unused and in its original packaging.

Return procedure for BZX84-C3V6,235:

1.Submit a request within 90 days.

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

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