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

Nexperia USA Inc. BZX84-A6V8,215

Name: BZX84-A6V8,215
Brand: Nexperia USA Inc.
SKU: BZX84-A6V8,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-A6V8,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-A6V8,215.pdf

Description:: DIODE ZENER 6.8V 250MW TO236AB

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Product details

Overview

BZX84-A6V8,215 from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for precision low-power voltage reference and clamping in signal conditioning, power supply feedback, and overvoltage protection circuits. It delivers 6.8 V nominal breakdown at 5 mA with 80 Ω differential resistance, 2 μA reverse current at 4.76 V, and a +1.2 mV/K temperature coefficient.

For engineers reviewing the BZX84-A6V8,215 datasheet, BZX84-A6V8,215 pinout, BZX84-A6V8,215 application, or BZX84-A6V8,215 equivalent, this part supports stable 6.8 V regulation in space-constrained PCB designs requiring tight voltage tolerance, low thermal drift, and fast transient suppression under ≤250 mW dissipation.

Technical Context

This Zener diode operates in reverse-biased avalanche mode to maintain a stable 6.8 V reference across load variations and temperature shifts. Its ±1 % initial tolerance and +1.2 mV/K temperature coefficient ensure predictable regulation from −55 °C to +150 °C junction temperature.

Designed for surface-mount use on FR4 PCBs with standard SOT23 footprint, it sustains non-repetitive 40 W peak reverse power surges (100 μs pulse) while limiting steady-state dissipation to 250 mW at 25 °C ambient - requiring thermal management above 70 °C ambient due to 500 K/W junction-to-ambient resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
Breakdown Voltage V_Z	6.73 V to 6.87 V at I_Z = 5 mA - ensures precise 6.8 V regulation within ±1 % tolerance for feedback loop stability
Differential Resistance r_dif	80 Ω max - minimizes output voltage variation under changing load current in reference applications
Reverse Current I_R	2 μA max at V_R = 4.76 V - guarantees low leakage in high-impedance sensing or bias networks
Temperature Coefficient S_Z	+1.2 mV/K at I_Z = 5 mA - provides predictable positive drift for compensation-aware circuit design
Total Power Dissipation P_tot	250 mW at T_amb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB
Non-repetitive Peak Power	40 W for 100 μs - enables transient overvoltage clamping without device failure
Junction Temperature Range	−55 °C to +150 °C - supports operation in industrial and extended-temperature environments

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; compact 2.9 mm × 1.3 mm footprint optimized for automated assembly and high-density routing.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in reverse-regulation configuration
2	Not Connected (n.c.)	Internally unconnected lead; must remain floating - no PCB trace or solder joint
3	Cathode (K)	High-impedance reference node; ties to regulated output or feedback point in shunt regulator topologies

Key Features

Feature	Design Value
±1 % voltage tolerance	Enables direct replacement of higher-cost references in cost-sensitive 6.8 V feedback paths without trimming
Low 80 Ω dynamic impedance	Maintains <±10 mV output shift across 1–10 mA load changes - critical for ADC reference buffering
+1.2 mV/K tempco	Allows predictable offset correction in temperature-compensated sensor interfaces or bandgap references
40 W surge rating (100 μs)	Clamps ESD transients per IEC 61000-4-2 Level 4 without derating or external TVS stacking
SOT23 package compatibility	Supports reflow/wave soldering per JEDEC J-STD-020; footprint matches industry-standard 0.95 mm pitch layout

Applications

Power Supply Feedback

Signal Clamping

Use Scenario: Stabilizing output voltage in isolated flyback or buck converter feedback loops using optocoupler-coupled TL431 alternatives.

IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 6.8 V threshold to control PWM duty cycle via error amplifier input.

Use Value: Eliminates need for external resistor divider calibration; ±1 % tolerance reduces output variation to ±0.07 V at 6.8 V nominal.

Use Scenario: Protecting microcontroller GPIO pins from 12 V automotive transients or inductive kickback in industrial I/O modules.

IC Role / Device Role / Timing Role: Low-capacitance (200 pF) clamp limiting input voltage to 6.8 V before ESD diode conduction.

Use Value: Limits overshoot to safe levels within 100 ns, preventing latch-up without adding series resistance that degrades signal integrity.

Sensor Biasing

Reference Voltage Source

Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or strain gauges in portable instrumentation.

IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing op-amp-based references where quiescent current <100 μA is required.

Use Value: Delivers 6.8 V ±0.07 V from −40 °C to +85 °C ambient, reducing measurement error from voltage drift by >60 % vs. ±5 % Zeners.

Use Scenario: Generating fixed reference for analog comparators in battery monitoring circuits detecting overvoltage thresholds.

IC Role / Device Role / Timing Role: Precision shunt reference establishing 6.8 V trip point independent of supply rail fluctuations.

Use Value: Enables comparator hysteresis design with <±5 mV uncertainty, improving noise immunity in noisy 12 V automotive subsystems.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5235BS-7-F	6.8 V ±5 % tolerance; 100 Ω r_dif; 5 μA I_R at 4.76 V	Higher tolerance and leakage reduce accuracy in precision feedback; suitable only for non-critical clamping	Select when cost is primary constraint and ±5 % regulation error is acceptable
Vishay BZX84-C6V8-TP	6.8 V ±5 % tolerance; 150 Ω r_dif; 3 μA I_R at 4.76 V; same SOT23 package	Looser tolerance increases output variance; higher impedance degrades load regulation in active circuits	Choose for legacy designs already qualified with ±5 % parts or where thermal drift compensation is applied externally

Compared with MMBZ5235BS-7-F and BZX84-C6V8-TP, the BZX84-A6V8,215 offers tighter tolerance, lower dynamic impedance, and superior temperature stability - making it the preferred choice for closed-loop regulation, precision biasing, and noise-sensitive analog signal chains where voltage accuracy directly impacts system performance.

Availability

BZX84-A6V8,215 is available at Aetrix Electronics and suitable for power supply feedback, signal clamping, sensor biasing, and reference voltage source applications requiring stable component supply, consistent parametric performance, and long-term manufacturability.

Supply support for BZX84-A6V8,215 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 discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.

The BZX84 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for cost-effective, space-efficient voltage reference and protection in consumer, industrial, and computing power systems.

FAQ

What is the maximum continuous forward current for BZX84-A6V8,215?

The absolute maximum forward current is 200 mA per the datasheet limiting values table. However, forward conduction is not its intended operating mode; sustained forward bias above 100 mA risks thermal runaway due to low forward voltage (~0.9 V at 10 mA) and limited thermal resistance (500 K/W). It should only be briefly forward-biased during testing or fault conditions.

Can BZX84-A6V8,215 replace a 6.8 V TL431 in feedback circuits?

No - the BZX84-A6V8,215 is a passive two-terminal shunt regulator, while the TL431 is an active three-terminal programmable precision reference with 2.5 V internal reference and adjustable output. It can replace TL431 only in simple fixed-voltage shunt configurations where gain, sink current capability (>100 mA), and adjustable thresholds are unnecessary.

How does the n.c. pin (Pin 2) affect PCB layout?

Pin 2 is internally unconnected and must remain electrically floating - no copper pour, trace, or solder mask opening should contact it. Including it in ground planes or routing signals to it risks parasitic coupling or mechanical stress-induced damage. The recommended footprint (Fig. 12) specifies 0.6 mm solder land width and 0.5 mm spacing to isolate this terminal.

Is BZX84-A6V8,215 qualified for automotive applications?

No - per Nexperia's revision history (Section 13), the BZX84 series was explicitly changed to non-automotive qualification in Rev. 7 (Jan 2023). Automotive-grade alternatives include the BZX84-Q series (e.g., BZX84-Q6V8,215), which undergo AEC-Q101 stress testing and include enhanced robustness for 12 V/24 V vehicle electrical systems.

BZX84-A6V8,215 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):: 6.8 V

Tolerance:: ±1%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 15 Ohms

Current - Reverse Leakage @ Vr:: 2 µA @ 4 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-A6V8,215 FAQ

1.How can I place an order for BZX84-A6V8,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-A6V8,215 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-A6V8,215 reliable?

The price and inventory of BZX84-A6V8,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-A6V8,215 is usually 5 days.

3.What payment methods are accepted for BZX84-A6V8,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-A6V8,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-A6V8,215?

BZX84-A6V8,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-A6V8,215 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-A6V8,215?

For technical support, including BZX84-A6V8,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-A6V8,215 requirements.

6.How does Aetrix verify that BZX84-A6V8,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-A6V8,215 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-A6V8,215 meets industry standards.

7.What is the process for return or replacement of BZX84-A6V8,215?

All BZX84-A6V8,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-A6V8,215, 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-A6V8,215 part is unused and in its original packaging.

Return procedure for BZX84-A6V8,215:

1.Submit a request within 90 days.

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

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