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

onsemi BZX84C6V2ET1

Name: BZX84C6V2ET1
Brand: onsemi
SKU: BZX84C6V2ET1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84C6V2ET1

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: BZX84C6V2ET1.pdf

Description:: DIODE ZENER 6.2V 225MW SOT23-3

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Product details

Overview

BZX84C6V2ET1 from onsemi is a 6.2 V ±5% Zener diode in SOT-23 package, rated for 225 mW power dissipation at 25°C on FR-5 board, with 10 Ω dynamic impedance at 5 mA test current and 3.0 µA max reverse leakage at 4.0 V, used for precision voltage reference and overvoltage protection in portable power rails.

For engineers reviewing the BZX84C6V2ET1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance (±5%), thermal resistance (556 °C/W), ESD rating (>16 kV HBM), capacitance (185 pF at 0 V), and Pb-free SOT-23 packaging compatibility with automated assembly.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at 6.2 V with temperature coefficient of +0.4 mV/°C. Its 225 mW DC power rating is derated linearly above 25°C at 1.8 mW/°C on FR-5 board.

The SOT-23 package features Pin 1 (Anode), Pin 2 (No Connection), and Pin 3 (Cathode), with cathode polarity indicated by band. It delivers stable regulation under pulse conditions up to 225 W (8 × 20 µs) and supports high-density PCB layouts due to 2.9 mm × 1.3 mm footprint.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	5.8–6.6 V @ 5 mA - Ensures tight 6.2 V regulation with ±5% tolerance for stable reference in low-power circuits.
Dynamic Impedance (Z_ZT)	10 Ω @ 5 mA - Low AC impedance maintains voltage stability under varying load currents.
Reverse Leakage (I_R)	3.0 µA max @ 4.0 V - Minimal standby current preserves battery life in always-on portable devices.
Power Dissipation (P_D)	225 mW @ T_A = 25°C on FR-5 - Defines maximum continuous DC power handling before thermal derating applies.
Capacitance (C)	185 pF @ V_R = 0 V, f = 1 MHz - Limits high-frequency noise coupling in signal path applications.
ESD Rating	Class 3 (>16 kV HBM) - Enables robust handling during automated PCB assembly without external protection.
Thermal Resistance (R_JA)	556 °C/W - Determines junction temperature rise per mW dissipated; critical for reliability in confined spaces.

Pinout & Package

SOT-23 (Case 318, Style 8) surface-mount package with 2.9 mm × 1.3 mm footprint, void-free thermosetting plastic case, UL 94 V-0 flammability rating, and corrosion-resistant solderable finish. Maximum soldering temperature: 260°C for 10 seconds.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode	Forward-biased terminal; connects to lower-potential side of regulated rail.
2	No Connection	Internally unconnected; must remain floating-no PCB trace or pad required.
3	Cathode	Reverse-biased terminal; connects to higher-potential side and carries Zener current during regulation.

Key Features

Feature	Design Value
225 mW Power Rating	Enables use in space-constrained, low-power applications without heatsinking.
Pb-Free SOT-23 Package	Complies with RoHS and JEDEC standards for lead-free reflow assembly.
+0.4 mV/°C Tempco	Minimizes voltage drift across −65°C to +150°C operating range for stable references.
185 pF Junction Capacitance	Supports moderate-speed transient suppression without excessive signal distortion.
225 W Pulse Withstand	Handles short-duration surges (8 × 20 µs) without degradation in protection circuits.

Applications

Smartphone Power Rail Clamping	USB Port Overvoltage Protection
Use Scenario: Clamps 5 V USB input rail against transient spikes exceeding 6.2 V during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as passive voltage clamp between VBUS and GND. Use Value: Prevents damage to downstream USB controller ICs by limiting peak voltage to ≤6.6 V with <3 µA leakage at 4 V.	Use Scenario: Protects microcontroller I/O pins powered from 3.3 V LDO against accidental 5 V misconnection or backfeed. IC Role / Device Role / Timing Role: Zener-based level translator and fault limiter placed between I/O line and local 3.3 V rail. Use Value: Maintains safe logic-high threshold (≤3.6 V) while drawing only 3 µA standby current, preserving sleep-mode battery life.
Portable Medical Sensor Reference	IoT Node Battery Monitor
Use Scenario: Provides stable 6.2 V reference for ADC measurement of lithium-ion cell voltage in wearable health monitors. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric analog-to-digital conversion. Use Value: Delivers ±5% initial accuracy and +0.4 mV/°C tempco, enabling <1% total error over −20°C to +60°C operating range.	Use Scenario: Monitors primary battery voltage in LPWAN sensor nodes using resistive divider into MCU ADC. IC Role / Device Role / Timing Role: Low-leakage Zener shunt element stabilizing divider node against supply variation. Use Value: Limits divider current error to <0.1% with 3 µA max IR at 4 V, ensuring accurate state-of-charge estimation over multi-year deployment.

Smartphone Power Rail Clamping

USB Port Overvoltage Protection

Use Scenario: Clamps 5 V USB input rail against transient spikes exceeding 6.2 V during hot-plug events or ESD discharge.

IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as passive voltage clamp between VBUS and GND.

Use Value: Prevents damage to downstream USB controller ICs by limiting peak voltage to ≤6.6 V with <3 µA leakage at 4 V.

Use Scenario: Protects microcontroller I/O pins powered from 3.3 V LDO against accidental 5 V misconnection or backfeed.

IC Role / Device Role / Timing Role: Zener-based level translator and fault limiter placed between I/O line and local 3.3 V rail.

Use Value: Maintains safe logic-high threshold (≤3.6 V) while drawing only 3 µA standby current, preserving sleep-mode battery life.

Portable Medical Sensor Reference

IoT Node Battery Monitor

Use Scenario: Provides stable 6.2 V reference for ADC measurement of lithium-ion cell voltage in wearable health monitors.

IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric analog-to-digital conversion.

Use Value: Delivers ±5% initial accuracy and +0.4 mV/°C tempco, enabling <1% total error over −20°C to +60°C operating range.

Use Scenario: Monitors primary battery voltage in LPWAN sensor nodes using resistive divider into MCU ADC.

IC Role / Device Role / Timing Role: Low-leakage Zener shunt element stabilizing divider node against supply variation.

Use Value: Limits divider current error to <0.1% with 3 µA max IR at 4 V, ensuring accurate state-of-charge estimation over multi-year deployment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5234BLT1	6.2 V nominal, 7 Ω Z_ZT @ 20 mA, 100 pF capacitance, SOT-23 package	Lower dynamic impedance but tighter 5% tolerance only at 20 mA; less suitable for low-current biasing	Select when higher test current (≥20 mA) is available and lower AC impedance is prioritized over ultra-low leakage.
BZX84-C6V2LT1G	Identical electrical specs, same SOT-23 package, but marked "LT1G" and shipped in 10,000/reel tape-and-reel	No functional difference; differs only in packaging format and date-code marking convention	Choose for high-volume production requiring larger reel size and compatible with same placement equipment.

Compared with MMBZ5234BLT1, BZX84C6V2ET1 offers superior low-current regulation (10 Ω @ 5 mA vs. 7 Ω @ 20 mA) and lower leakage (3.0 µA vs. 5.0 µA @ 4 V), making it better suited for battery-powered systems; versus BZX84-C6V2LT1G, it shares identical performance but uses 3,000/reel packaging optimized for prototyping and mid-volume builds.

Availability

BZX84C6V2ET1 is available at Aetrix Electronics and suitable for smartphone power rail clamping, USB port overvoltage protection, and portable medical sensor reference requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for BZX84C6V2ET1 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 management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The BZX84C6V2ET1 belongs to the BZX84CxxxET1 series of 225 mW Zener regulators designed specifically for compact, high-density PCB applications in portable electronics where space, power efficiency, and assembly compatibility are critical.

FAQ

What is the Zener voltage tolerance of BZX84C6V2ET1?

The BZX84C6V2ET1 has a nominal Zener voltage of 6.2 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 5.8 V and 6.6 V when tested at 5 mA (IZT). This tolerance is guaranteed across the full operating temperature range of −65°C to +150°C and is verified per the onsemi datasheet revision 6.

Does BZX84C6V2ET1 have a no-connect pin, and how should it be handled on the PCB?

Yes, BZX84C6V2ET1 has Pin 2 designated as "No Connection" per its official pinout. This terminal is internally unconnected and must remain electrically floating-no PCB trace, pad, or solder mask opening is required. Routing or grounding Pin 2 may cause unintended parasitic effects or assembly defects.

What is the maximum reverse leakage current for BZX84C6V2ET1, and at what voltage is it specified?

The maximum reverse leakage current for BZX84C6V2ET1 is 3.0 µA, specified at VR = 4.0 V and TA = 25°C. This value ensures minimal quiescent current draw in battery-sensitive applications such as wearables and IoT sensors, directly supporting multi-year operation on coin-cell power sources.

Is BZX84C6V2ET1 RoHS-compliant and Pb-free?

Yes, BZX84C6V2ET1 is RoHS-compliant and Pb-free, as confirmed by the "G" suffix in its full ordering code (BZX84C6V2ET1G) and documented in the onsemi Pb-Free Packaging Specification. It meets JEDEC J-STD-020 moisture sensitivity level 1 and supports standard lead-free reflow profiles up to 260°C.

How does the temperature coefficient of BZX84C6V2ET1 affect its voltage stability over temperature?

The BZX84C6V2ET1 exhibits a positive temperature coefficient of +0.4 mV/°C at IZT = 5 mA, meaning its Zener voltage increases by 0.4 mV for every 1°C rise in junction temperature. This results in a total shift of approximately ±60 mV over −65°C to +150°C, enabling predictable compensation in reference designs where drift must stay within ±1%.

BZX84C6V2ET1 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)

BZX84C6V2ET1 FAQ

1.How can I place an order for BZX84C6V2ET1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84C6V2ET1 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 BZX84C6V2ET1 reliable?

The price and inventory of BZX84C6V2ET1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C6V2ET1 is usually 5 days.

3.What payment methods are accepted for BZX84C6V2ET1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C6V2ET1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84C6V2ET1?

BZX84C6V2ET1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84C6V2ET1 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 BZX84C6V2ET1?

For technical support, including BZX84C6V2ET1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C6V2ET1 requirements.

6.How does Aetrix verify that BZX84C6V2ET1 is sourced from the original manufacturer or authorized distributors?

All BZX84C6V2ET1 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 BZX84C6V2ET1 meets industry standards.

7.What is the process for return or replacement of BZX84C6V2ET1?

All BZX84C6V2ET1 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C6V2ET1, 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 BZX84C6V2ET1 part is unused and in its original packaging.

Return procedure for BZX84C6V2ET1:

1.Submit a request within 90 days.

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

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