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

Nexperia USA Inc. BZX84-C6V8,235

Name: BZX84-C6V8,235
Brand: Nexperia USA Inc.
SKU: BZX84-C6V8,235
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-C6V8,235

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-C6V8,235.pdf

Description:: DIODE ZENER 6.8V 250MW TO236AB

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Product details

Overview

BZX84-C6V8,235 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 6.8 V nominal breakdown at 5 mA, with 80 Ω differential resistance, 15 μA reverse current at 4.76 V, and 1.2 mV/K temperature coefficient. It delivers stable reference voltage in low-power power supply rails and overvoltage protection circuits.

For engineers reviewing the BZX84-C6V8,235 datasheet, BZX84-C6V8,235 pinout, BZX84-C6V8,235 application, or BZX84-C6V8,235 equivalent, this page provides verified electrical parameters, thermal behavior under PCB mounting, real-world Zener knee characteristics, and validated alternatives for precision voltage reference design.

Technical Context

This Zener diode operates in reverse-bias breakdown mode to maintain a stable DC reference voltage across its cathode–anode terminals. Its 6.4 V to 7.2 V working voltage range (±5 %) and 80 Ω differential resistance ensure predictable regulation under load variations up to 200 mA forward current.

The device exhibits a positive temperature coefficient of +1.2 mV/K at I_Z = 5 mA, enabling compensation in temperature-sensitive references. Non-repetitive peak reverse power dissipation reaches 40 W for 100 μs pulses, supporting transient suppression in low-energy surge scenarios.

Key Specifications

Parameter	Value and Actual Design Meaning
Breakdown Voltage V_Z	6.4 V to 7.2 V at I_Z = 5 mA - defines usable regulation window under standard test conditions
Differential Resistance r_dif	80 Ω - determines output impedance and load regulation error in shunt reference configurations
Reverse Current I_R	15 μA at V_R = 4.76 V - sets minimum bias current needed to enter breakdown region
Temperature Coefficient S_Z	+1.2 mV/K at I_Z = 5 mA - quantifies drift per degree Celsius in precision reference applications
Total Power Dissipation P_tot	250 mW at T_amb ≤ 25 °C on FR4 PCB - limits continuous DC power handling in surface-mount layouts
Non-repetitive Peak Power	40 W for t_p = 100 μs - supports short-duration overvoltage clamping without failure
Junction-to-Ambient R_th(j-a)	500 K/W - governs steady-state temperature rise above ambient during continuous operation

Pinout & Package

Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with standard footprint on FR4 PCB (single-sided 70 µm copper, tin-plated).

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in Zener regulation configuration
2	Not Connected (n.c.)	Internal die bond wire stub; electrically isolated and must remain unconnected in PCB layout
3	Cathode (K)	Reverse-biased terminal; connects to higher-potential node and serves as regulated output reference point

Key Features

Feature	Design Value
Low-power Zener regulation	250 mW total dissipation enables use in space-constrained, battery-powered systems
±5 % voltage tolerance	Supports cost-sensitive designs where tight regulation is not required but stable thresholding is essential
Standard E24 voltage series	6.8 V nominal value aligns with industry-standard reference points for 5 V and 3.3 V rail monitoring
Thermally optimized SOT23	330 K/W junction-to-solder-point resistance allows effective heat transfer via cathode pad to PCB copper
High surge robustness	40 W non-repetitive peak power rating permits integration into basic transient voltage suppression paths

Applications

Power Supply Reference

Overvoltage Clamp

Use Scenario: Providing stable 6.8 V reference for linear regulator feedback or ADC reference divider networks.

IC Role / Device Role / Timing Role: Shunt voltage reference element establishing precise DC bias point independent of input variation.

Use Value: 80 Ω differential resistance minimizes output voltage shift under 1–5 mA load changes, ensuring <±10 mV regulation error.

Use Scenario: Clamping transient spikes on 5 V logic rails to prevent damage to downstream CMOS inputs.

IC Role / Device Role / Timing Role: Passive overvoltage protector triggered when rail exceeds 7.2 V (max V_Z).

Use Value: 40 W pulse rating absorbs 100 μs surges up to 6 A without degradation, meeting IEC 61000-4-4 level 3 requirements.

Signal Level Translation

Current Source Bias

Use Scenario: Generating fixed 6.8 V offset for op-amp input stages interfacing with bipolar sensor outputs.

IC Role / Device Role / Timing Role: DC level-shifting element defining common-mode voltage for analog signal conditioning.

Use Value: +1.2 mV/K temperature coefficient enables predictable offset tracking across –40 °C to +85 °C operating range.

Use Scenario: Setting bias current for LED drivers or transistor amplifiers using constant-current sink topology.

IC Role / Device Role / Timing Role: Voltage-controlled current reference node in two-resistor Zener-based current source.

Use Value: 15 μA reverse leakage at 4.76 V ensures reliable turn-on with minimal quiescent current overhead.

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 MMBZ5234BS	6.8 V ±5 %, 200 mW, 100 Ω r_dif, +2.0 mV/K S_Z	Higher tempco and impedance reduce accuracy in precision references	Prefer for legacy ON-design compatibility where thermal drift is less critical
Vishay BZX84-C6V8-7-F	6.8 V ±5 %, 300 mW, 75 Ω r_dif, +1.0 mV/K S_Z, same SOT23 package	Lower impedance and tighter tempco improve regulation stability	Select when upgrading for improved load regulation and reduced thermal drift

Compared with BZX84-C6V8,235, MMBZ5234BS trades higher differential resistance and temperature coefficient for broader second-source availability, while BZX84-C6V8-7-F offers superior regulation performance at marginally higher cost and identical board fit.

Availability

BZX84-C6V8,235 is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and signal level translation requiring stable component supply and consistent ±5 % Zener tolerance.

Supply support for BZX84-C6V8,235 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 leading semiconductor manufacturer specializing in high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands.

The BZX84 series targets cost-effective, space-efficient voltage regulation in consumer, industrial, and computing applications, emphasizing manufacturability, thermal robustness, and standardized E24 voltage selection.

FAQ

What is the maximum continuous reverse current the BZX84-C6V8,235 can sustain?

The device is rated for 200 mA maximum forward current, but as a Zener diode it operates in reverse breakdown. At its nominal 6.8 V regulation point and 250 mW power limit, the maximum continuous reverse current is approximately 36.8 mA (P_tot/V_Z = 250 mW / 6.8 V). Exceeding this risks thermal runaway on standard FR4 PCBs.

Can BZX84-C6V8,235 replace a 5.1 V Zener in an existing circuit?

No - it is not a direct replacement due to its 6.8 V nominal breakdown voltage. Substituting it for a 5.1 V Zener would raise the regulation threshold by 1.7 V, potentially causing undervoltage lockout or incorrect comparator triggering. Only interchange within the same nominal voltage grade and tolerance band.

How does the n.c. pin affect PCB layout and thermal performance?

Pin 2 is internally unconnected and must remain floating in layout. It does not contribute to thermal conduction; heat flows primarily through pins 1 (anode) and 3 (cathode), with the cathode tab providing the lowest R_th(j-sp) (330 K/W). Routing copper to the cathode pad maximizes thermal dissipation.

Is BZX84-C6V8,235 suitable for automotive applications?

No - this variant is non-automotive qualified. The datasheet explicitly states that only designated -Q suffix parts meet AEC-Q200 requirements. Using BZX84-C6V8,235 in automotive environments voids warranty and risks reliability failure under extended temperature cycling and vibration stress.

BZX84-C6V8,235 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):: 6.8 V

Tolerance:: ±5%

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-C6V8,235 FAQ

1.How can I place an order for BZX84-C6V8,235 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-C6V8,235 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-C6V8,235 reliable?

The price and inventory of BZX84-C6V8,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C6V8,235 is usually 5 days.

3.What payment methods are accepted for BZX84-C6V8,235?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C6V8,235 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-C6V8,235?

BZX84-C6V8,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-C6V8,235 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-C6V8,235?

For technical support, including BZX84-C6V8,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C6V8,235 requirements.

6.How does Aetrix verify that BZX84-C6V8,235 is sourced from the original manufacturer or authorized distributors?

All BZX84-C6V8,235 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-C6V8,235 meets industry standards.

7.What is the process for return or replacement of BZX84-C6V8,235?

All BZX84-C6V8,235 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C6V8,235, 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-C6V8,235 part is unused and in its original packaging.

Return procedure for BZX84-C6V8,235:

1.Submit a request within 90 days.

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

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