Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi BZX84C6V2

Name: BZX84C6V2
Brand: onsemi
SKU: BZX84C6V2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BZX84C6V2

Manufacturer:: onsemi

Category:: Single Zener Diodes

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

Datasheet:: BZX84C6V2.pdf

Description:: DIODE ZENER 6.2V 350MW SOT23

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,814

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BZX84C6V2 from ON Semiconductor (formerly Fairchild) is a 6.2 V, ±5% tolerance Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C ambient, with 6 Ω dynamic impedance at 20 mA and 185 pF capacitance at 0 V reverse bias, widely used for voltage regulation and overvoltage protection in low-power analog circuits.

For engineers reviewing the BZX84C6V2 datasheet, pinout, applications, or equivalent options, key selection criteria include its precise 6.2 V nominal breakdown voltage, low 6 Ω impedance at 20 mA, temperature coefficient of +0.4 mV/°C, and compatibility with space-constrained PCB layouts requiring SOT-23 footprint.

Technical Context

The BZX84C6V2 operates as a silicon planar epitaxial Zener diode optimized for stable voltage reference and clamping in low-current signal conditioning paths. Its design targets operation at test currents of 1.0 mA, 5.0 mA, and 20 mA, with specified V_Z min/max across all three conditions.

Thermal performance is defined by junction-to-ambient resistance of 465 °C/W on FR-4 PCB (76.2 mm × 114.3 mm), and junction-to-lead resistance of 220 °C/W referenced to cathode. Maximum operating junction temperature is 150 °C, with storage range from –55 °C to +150 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	6.2 V ±5% - defines regulated output level under 5 mA test current; actual range 5.8–6.6 V ensures predictable clamping threshold
Zener Impedance	6 Ω at I_Z = 20 mA - low dynamic resistance maintains tight voltage regulation during load transients
Power Dissipation	250 mW at T_A = 25°C - sets maximum continuous DC power handling on standard FR-4 board
Reverse Capacitance	185 pF at V_R = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits
Temperature Coefficient	+0.4 mV/°C at I_Z = 5 mA - positive drift enables compensation against negative-drift components in precision references
Forward Voltage	≤0.9 V at I_F = 10 mA - ensures minimal conduction loss when used bidirectionally or in series with other diodes

Pinout & Package

Package: SOT-23 (TO-236AB), surface-mount, 3-terminal plastic package with cathode marked by band. Standard JEDEC MO-215 outline; body dimensions 2.9 mm × 1.3 mm × 1.0 mm.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal in forward bias; connected to lower-potential node in Zener mode	Used for forward conduction or as reference ground return in shunt regulator topologies
Cathode	Current exit terminal in forward bias; higher-potential node in Zener breakdown	Connected to regulated voltage rail; thermal path to PCB via cathode pad per R_θJL = 220 °C/W
Case / Not Connected	Non-electrical mechanical termination	No internal connection; serves only structural support and thermal mass; not to be biased or grounded

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables use without post-production trimming in cost-sensitive consumer and industrial controls
Low 6 Ω dynamic impedance at 20 mA	Minimizes output voltage deviation under varying load current, critical for ADC reference stability
185 pF junction capacitance	Supports effective ESD suppression and broadband noise filtering up to ~100 MHz
+0.4 mV/°C tempco at 5 mA	Allows predictable voltage shift across –40°C to +85°C ambient, simplifying thermal error budgeting

Applications

Power Supply Rail Clamp	ADC Reference Stabilization
Use Scenario: Clamping 3.3 V or 5 V logic supply rails against transient overvoltage events in microcontroller-based systems. IC Role / Device Role: Shunt regulator providing low-energy crowbar action during ESD or inductive kickback. Use Value: Limits rail excursion to ≤6.6 V, protecting downstream CMOS inputs rated for 6.5 V absolute max.	Use Scenario: Providing stable 6.2 V reference for 12-bit SAR ADCs in sensor signal chains. IC Role / Device Role: Precision voltage source replacing higher-cost bandgap references where ±1% accuracy suffices. Use Value: Delivers <6 Ω output impedance and +0.4 mV/°C drift, enabling <0.5 LSB gain error over 0–70°C.
Signal-Level Voltage Translation	Overvoltage Protection for I²C Bus
Use Scenario: Level-shifting 1.8 V GPIO signals to interface with 5 V peripherals using passive resistor-Zener networks. IC Role / Device Role: Bidirectional clamp defining upper voltage limit while allowing forward conduction below 0.9 V. Use Value: Enables robust translation without active circuitry; 185 pF capacitance avoids signal edge degradation at ≤1 MHz rates.	Use Scenario: Protecting open-drain I²C SDA/SCL lines from accidental 12 V misconnection or hot-swap surges. IC Role / Device Role: Low-capacitance shunt limiter placed between bus line and ground, activated above 6.6 V. Use Value: 185 pF loading preserves 400 kHz timing margins; 250 mW rating handles short-duration faults without failure.

Power Supply Rail Clamp

ADC Reference Stabilization

Use Scenario: Clamping 3.3 V or 5 V logic supply rails against transient overvoltage events in microcontroller-based systems.

IC Role / Device Role: Shunt regulator providing low-energy crowbar action during ESD or inductive kickback.

Use Value: Limits rail excursion to ≤6.6 V, protecting downstream CMOS inputs rated for 6.5 V absolute max.

Use Scenario: Providing stable 6.2 V reference for 12-bit SAR ADCs in sensor signal chains.

IC Role / Device Role: Precision voltage source replacing higher-cost bandgap references where ±1% accuracy suffices.

Use Value: Delivers <6 Ω output impedance and +0.4 mV/°C drift, enabling <0.5 LSB gain error over 0–70°C.

Signal-Level Voltage Translation

Overvoltage Protection for I²C Bus

Use Scenario: Level-shifting 1.8 V GPIO signals to interface with 5 V peripherals using passive resistor-Zener networks.

IC Role / Device Role: Bidirectional clamp defining upper voltage limit while allowing forward conduction below 0.9 V.

Use Value: Enables robust translation without active circuitry; 185 pF capacitance avoids signal edge degradation at ≤1 MHz rates.

Use Scenario: Protecting open-drain I²C SDA/SCL lines from accidental 12 V misconnection or hot-swap surges.

IC Role / Device Role: Low-capacitance shunt limiter placed between bus line and ground, activated above 6.6 V.

Use Value: 185 pF loading preserves 400 kHz timing margins; 250 mW rating handles short-duration faults without failure.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5234BS-7-F (Diodes Inc.)	Same 6.2 V nominal, ±5%, SOT-23, but 350 mW P_D rating and 7 Ω Z_Z at 20 mA	Higher power margin supports longer surge duration; slightly higher impedance affects regulation tightness	Prefer when extended transient energy absorption is required and layout allows same footprint
1N4735A (ON Semiconductor)	6.2 V, ±5%, DO-41 package, 1 W P_D, 5 Ω Z_Z at 41 mA - larger through-hole package, higher power, lower impedance	Not suitable for dense SMT designs; better for prototyping or high-energy clamping where thermal mass matters	Select only if SOT-23 is unavailable or board-level thermal constraints permit through-hole mounting

Compared with MMBZ5234BS-7-F and 1N4735A, the BZX84C6V2 offers optimal balance of SMT compatibility, 250 mW capability, and 6 Ω impedance for compact, low-power regulation-making it preferred for modern embedded PCBs where space and thermal management are constrained.

Availability

BZX84C6V2 is available at Aetrix Electronics and suitable for voltage reference stabilization, overvoltage protection, and signal-level clamping requiring stable component supply in automotive body electronics, industrial sensor modules, and consumer IoT endpoints.

Supply support for BZX84C6V2 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

ON Semiconductor is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The BZX84C6V2 belongs to ON Semiconductor's legacy Zener diode portfolio, designed specifically for cost-effective, space-efficient voltage regulation and protection in high-volume consumer and industrial electronics.

FAQ

What is the nominal Zener voltage and tolerance of the BZX84C6V2?

The BZX84C6V2 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 5.0 mA. This specification is verified per the ON Semiconductor datasheet Rev. 1.10, and applies directly to the BZX84C6V2 under standard conditions (T_A = 25°C). The tolerance band enables reliable use in untrimmed circuits without calibration.

What is the maximum power dissipation rating for the BZX84C6V2?

The BZX84C6V2 is rated for 250 mW power dissipation at an ambient temperature of 25°C when mounted on a standard FR-4 PCB (76.2 mm × 114.3 mm). Derating is required above 25°C at 0.54 mW/°C based on its 465 °C/W junction-to-ambient thermal resistance. This rating defines safe continuous DC operation for the BZX84C6V2 in typical SMT applications.

Does the BZX84C6V2 have a specified temperature coefficient, and what is its value?

Yes, the BZX84C6V2 has a temperature coefficient of +0.4 mV/°C at I_Z = 5.0 mA, indicating its Zener voltage increases linearly with temperature. This positive coefficient is confirmed in the "Electrical Characteristics (Continued)" table of the official datasheet. For the BZX84C6V2, this behavior supports predictable drift compensation in mixed-component reference designs.

What is the Zener impedance of the BZX84C6V2 at 20 mA, and why does it matter?

The BZX84C6V2 exhibits a Zener impedance of 6 Ω at I_Z = 20 mA, as specified in the Electrical Characteristics table. This low dynamic impedance ensures minimal voltage variation under changing load current-critical for maintaining accuracy in shunt-regulated supplies or ADC references. For the BZX84C6V2, this value directly determines regulation error in real-world signal conditioning circuits.

Is the BZX84C6V2 compatible with automated SMT assembly processes?

Yes, the BZX84C6V2 uses the industry-standard SOT-23 (TO-236AB) package, fully compatible with pick-and-place equipment and reflow soldering profiles per J-STD-020. Its cathode marking, dimensional consistency, and moisture sensitivity level (MSL) 1 rating confirm suitability for high-yield automated assembly. The BZX84C6V2 is routinely deployed in volume production of consumer and industrial PCBs without process adaptation.

BZX84C6V2 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:: 350 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:: -55°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

BZX84C6V2 FAQ

1.How can I place an order for BZX84C6V2 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84C6V2 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 BZX84C6V2 reliable?

The price and inventory of BZX84C6V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C6V2 is usually 5 days.

3.What payment methods are accepted for BZX84C6V2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C6V2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84C6V2?

BZX84C6V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84C6V2 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 BZX84C6V2?

For technical support, including BZX84C6V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C6V2 requirements.

6.How does Aetrix verify that BZX84C6V2 is sourced from the original manufacturer or authorized distributors?

All BZX84C6V2 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 BZX84C6V2 meets industry standards.

7.What is the process for return or replacement of BZX84C6V2?

All BZX84C6V2 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C6V2, 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 BZX84C6V2 part is unused and in its original packaging.

Return procedure for BZX84C6V2:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…