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

onsemi BZX84C6V2ET3G

Name: BZX84C6V2ET3G
Brand: onsemi
SKU: BZX84C6V2ET3G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84C6V2ET3G

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: BZX84C6V2ET3G.pdf

Description:: DIODE ZENER 6.2V 225MW SOT23

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Product details

Overview

BZX84C6V2ET3G from onsemi is a 6.2 V, 250 mW surface-mount Zener diode in SOT-23 package, designed for precision voltage regulation and reference applications with ±0.4 V tolerance at 5 mA test current, 10 Ω dynamic impedance, and −65 °C to +150 °C operating range-used in power supply feedback loops, overvoltage protection, and voltage clamping circuits.

For engineers reviewing the BZX84C6V2ET3G datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (6.2 V), power dissipation (250 mW on FR-5 board), temperature coefficient (+3.7 mV/°C), cathode-anode polarity marking, and SOT-23 footprint compatibility with automated assembly.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and line conditions. It features a low dynamic impedance of 10 Ω at 5 mA test current and exhibits a positive temperature coefficient of +3.7 mV/°C, indicating voltage increases with junction temperature.

The device uses a silicon planar epitaxial construction in a void-free thermosetting plastic SOT-23 case with corrosion-resistant finish, rated for 260 °C soldering (10 s) and UL 94 V-0 flammability compliance. Its ESD rating exceeds 16 kV per Human Body Model.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.2 V nominal, 5.8–6.6 V min–max at 5 mA - defines regulated output voltage tolerance in feedback or clamp circuits
Power Dissipation	250 mW on FR-5 board - sets maximum continuous power handling without derating below 25 °C
Dynamic Impedance (Z_ZT)	10 Ω at 5 mA - determines regulation accuracy under load transients
Temperature Coefficient	+3.7 mV/°C at 5 mA - quantifies voltage drift with ambient/junction temperature change
Reverse Leakage Current	3.0 µA max at 4.0 V - ensures minimal parasitic current in standby or high-impedance bias networks
Capacitance	185 pF at 0 V, 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent designs
ESD Rating	Class 3 (>16 kV HBM) - supports robust handling in manual assembly and field-replaceable modules

Pinout & Package

SOT-23 (TO-236) surface-mount package: 2.90 mm × 1.30 mm × 1.00 mm body, 1.90 mm lead pitch, void-free thermosetting plastic case with cathode band marking.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode	Connected to lower-potential node in reverse-bias configuration; forms cathode-to-anode voltage drop during regulation
2	No Connection	Internally unconnected; no electrical function or PCB trace required
3	Cathode	Connected to higher-potential node; marked by polarity band; carries regulated output voltage referenced to anode

Key Features

Feature	Design Value
Pb-Free & RoHS Compliant	Meets global environmental regulations; enables unrestricted use in EU, China, and other regulated markets
Automated Assembly Optimized	SOT-23 footprint and marking support high-speed pick-and-place and reflow soldering without manual alignment
High-Density Packaging	Small 2.9 × 1.3 mm outline allows placement in space-constrained portable electronics like wearables and IoT sensors
Thermal Robustness	Rated for 150 °C max junction temperature and 260 °C soldering - supports reliability in thermally aggressive environments
Low Capacitance Clamping	185 pF capacitance minimizes signal distortion in data-line protection and analog reference buffering

Applications

Power Supply Feedback	Voltage Reference
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener diode provides precise 6.2 V reference to TL431 or optocoupler LED anode, setting feedback threshold. Use Value: Tight 5.8–6.6 V tolerance and low 10 Ω impedance ensure <±1% output regulation under line/load variation.	Use Scenario: Generating stable bias voltage for op-amp input stages or ADC reference buffers in battery-powered sensors. IC Role / Device Role / Timing Role: Acts as shunt reference, sinking current to maintain fixed 6.2 V node independent of supply ripple. Use Value: +3.7 mV/°C TC and 3.0 µA leakage enable stable reference over −40 °C to +85 °C industrial temperature range.
Overvoltage Protection	Signal Line Clamping
Use Scenario: Protecting microcontroller I/O pins from transient surges on 5 V logic rails in automotive body control modules. IC Role / Device Role / Timing Role: Shunts excess energy above 6.2 V to ground before IC damage occurs, triggered by fast ESD or load dump events. Use Value: 225 W peak pulse rating (8 × 20 µs) and >16 kV HBM ESD withstand allow reliable surge suppression without external TVS.	Use Scenario: Limiting RS-232 signal swing to safe levels for level-shifting interfaces in medical handheld devices. IC Role / Device Role / Timing Role: Clamps negative excursions to −0.7 V (forward) and positive excursions to +6.2 V (reverse), protecting downstream receivers. Use Value: 185 pF capacitance avoids signal edge degradation at 115.2 kbps baud rates while maintaining tight voltage limits.

Power Supply Feedback

Voltage Reference

Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler-coupled feedback loop.

IC Role / Device Role / Timing Role: Zener diode provides precise 6.2 V reference to TL431 or optocoupler LED anode, setting feedback threshold.

Use Value: Tight 5.8–6.6 V tolerance and low 10 Ω impedance ensure <±1% output regulation under line/load variation.

Use Scenario: Generating stable bias voltage for op-amp input stages or ADC reference buffers in battery-powered sensors.

IC Role / Device Role / Timing Role: Acts as shunt reference, sinking current to maintain fixed 6.2 V node independent of supply ripple.

Use Value: +3.7 mV/°C TC and 3.0 µA leakage enable stable reference over −40 °C to +85 °C industrial temperature range.

Overvoltage Protection

Signal Line Clamping

Use Scenario: Protecting microcontroller I/O pins from transient surges on 5 V logic rails in automotive body control modules.

IC Role / Device Role / Timing Role: Shunts excess energy above 6.2 V to ground before IC damage occurs, triggered by fast ESD or load dump events.

Use Value: 225 W peak pulse rating (8 × 20 µs) and >16 kV HBM ESD withstand allow reliable surge suppression without external TVS.

Use Scenario: Limiting RS-232 signal swing to safe levels for level-shifting interfaces in medical handheld devices.

IC Role / Device Role / Timing Role: Clamps negative excursions to −0.7 V (forward) and positive excursions to +6.2 V (reverse), protecting downstream receivers.

Use Value: 185 pF capacitance avoids signal edge degradation at 115.2 kbps baud rates while maintaining tight voltage limits.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMSZ4688T1G	6.2 V nominal, 500 mW rating, SOD-123 package, 10 Ω Z_ZT at 5 mA, +3.7 mV/°C TC	Larger footprint (3.7 × 1.6 mm), higher power - suited for higher-current regulation where thermal margin is critical	Select when board layout allows larger package and >250 mW dissipation is needed; not drop-in due to different pad geometry
BZX84-C6V2LT1G	Identical 6.2 V spec, same SOT-23 package, but 3,000-piece tape-and-reel vs. 10,000-piece for BZX84C6V2ET3G	Same electrical and mechanical performance - differs only in packaging quantity and date-code marking format	Choose for smaller batch procurement or legacy inventory alignment; fully interchangeable electrically and physically

Compared with MMSZ4688T1G and BZX84-C6V2LT1G, the BZX84C6V2ET3G offers optimal balance of compact SOT-23 size, 250 mW power handling, and high-volume 10,000-piece reel packaging-making it preferred for high-density consumer and industrial PCBs requiring cost-effective, automated assembly.

Availability

BZX84C6V2ET3G is available at Aetrix Electronics and suitable for power supply feedback, voltage reference, and overvoltage protection applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for BZX84C6V2ET3G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The BZX84C6V2ET3G belongs to the BZX84CxxxETxG Zener regulator family, engineered for space-constrained, high-reliability voltage stabilization in portable and dense electronic systems.

FAQ

What is the Zener voltage tolerance of BZX84C6V2ET3G at 5 mA test current?

The BZX84C6V2ET3G has a Zener voltage range of 5.8 V to 6.6 V at 5 mA test current (IZT), corresponding to a nominal 6.2 V with ±0.4 V absolute tolerance. This specification is verified per onsemi's August 2024 datasheet revision 11 and applies under TA = 25 °C conditions. The BZX84C6V2ET3G maintains this tolerance across its qualified operating temperature range when used within derated power limits.

Does BZX84C6V2ET3G have a built-in ESD protection rating?

Yes, the BZX84C6V2ET3G is rated Class 3 for ESD per Human Body Model (HBM) with >16 kV withstand capability. This rating is confirmed in the "Specification Features" section of the official onsemi datasheet and reflects the device's robustness during handling, PCB assembly, and end-use in electrostatic-prone environments such as handheld electronics manufacturing and field service.

What is the thermal resistance junction-to-ambient for BZX84C6V2ET3G on FR-5 board?

The thermal resistance junction-to-ambient (R_JA) for BZX84C6V2ET3G is 500 °C/W when mounted on FR-5 board, with total power dissipation derated at 2.0 mW/°C above 25 °C ambient. This value is specified in the "Maximum Ratings" table of the onsemi datasheet and directly informs thermal design margins for continuous operation at 250 mW.

Can BZX84C6V2ET3G be used in automotive applications?

The standard BZX84C6V2ET3G is not AEC-Q101 qualified; however, the SZBZX84C6V2ET3G variant (with SZ prefix) is automotive-grade, AEC-Q101 qualified, and PPAP capable. For automotive use, engineers must specify the SZ-prefixed part-BZX84C6V2ET3G itself is intended for industrial and consumer applications per onsemi's product segmentation.

What is the forward voltage drop of BZX84C6V2ET3G at 10 mA forward current?

The forward voltage (V_F) of BZX84C6V2ET3G is guaranteed ≤ 0.90 V at 10 mA forward current (I_F), as stated in the "Electrical Characteristics" table of the onsemi datasheet. This parameter is relevant for reverse-polarity protection or series diode configurations where the device conducts in forward bias, and confirms low conduction loss in such roles.

BZX84C6V2ET3G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 6.2 V

Tolerance:: ±6%

Power - Max:: 225 mW

Impedance (Max) (Zzt):: 10 Ohms

Current - Reverse Leakage @ Vr:: 3 µA @ 4 V

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

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3 (TO-236)

BZX84C6V2ET3G FAQ

1.How can I place an order for BZX84C6V2ET3G through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84C6V2ET3G 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 BZX84C6V2ET3G reliable?

The price and inventory of BZX84C6V2ET3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C6V2ET3G is usually 5 days.

3.What payment methods are accepted for BZX84C6V2ET3G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C6V2ET3G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84C6V2ET3G?

BZX84C6V2ET3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84C6V2ET3G 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 BZX84C6V2ET3G?

For technical support, including BZX84C6V2ET3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C6V2ET3G requirements.

6.How does Aetrix verify that BZX84C6V2ET3G is sourced from the original manufacturer or authorized distributors?

All BZX84C6V2ET3G 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 BZX84C6V2ET3G meets industry standards.

7.What is the process for return or replacement of BZX84C6V2ET3G?

All BZX84C6V2ET3G units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C6V2ET3G, 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 BZX84C6V2ET3G part is unused and in its original packaging.

Return procedure for BZX84C6V2ET3G:

1.Submit a request within 90 days.

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

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