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Diodes Incorporated BZX84C6V8-7-F
- Part No.:
- BZX84C6V8-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C6V8-7-F.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,836
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Product details
Overview
BZX84C6V8-7-F from Diodes Incorporated is a 350 mW surface-mount Zener diode with a nominal zener voltage of 6.8 V (±0.4 V tolerance), 15 Ω dynamic impedance at 5 mA test current, and 2.0 µA maximum reverse leakage at 4.0 V. It operates in SOT23 package, supports automated assembly, and is AEC-Q101 qualified for automotive-grade reliability. It serves as a precision voltage reference or overvoltage clamp in low-power power supply regulation circuits.
For engineers reviewing the BZX84C6V8-7-F datasheet, BZX84C6V8-7-F pinout, BZX84C6V8-7-F application, or BZX84C6V8-7-F equivalent, key selection criteria include zener voltage tolerance (±5.9%), thermal resistance (357 °C/W), junction temperature range (–65 to +150 °C), and RoHS/Green compliance status - all critical for stable biasing in automotive sensor interfaces and industrial control I/O protection.
Technical Context
This Zener diode uses planar die construction for stable breakdown characteristics and low noise performance. Its 6.8 V nominal zener voltage is specified at 5 mA test current (IZT), with a positive temperature coefficient of +1.2 mV/°C - enabling predictable drift compensation in temperature-sensitive references.
The device exhibits 15 Ω zener impedance (ZZT) at IZT and 80 Ω knee impedance (ZZK) at 1 mA, ensuring sharp regulation onset and minimal voltage deviation under varying load conditions. Its 350 mW power dissipation rating is valid under ambient-temperature terminal conditions per JESD51-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V nominal, 6.4–7.2 V min/max at 5 mA - defines precise clamping threshold for 5 V rail protection |
| Power Dissipation (PD) | 350 mW - sets maximum continuous power handling without heatsinking on FR-4 PCB |
| Zener Impedance (ZZT) | 15 Ω at 5 mA - ensures <100 mV output variation across 1–10 mA load changes |
| Reverse Leakage (IR) | 2.0 µA max at 4.0 V - guarantees negligible quiescent current in standby bias networks |
| Thermal Resistance (RθJA) | 357 °C/W - determines junction temperature rise of ~126 °C at full 350 mW dissipation |
| Operating Temperature | –65 to +150 °C - enables deployment in under-hood automotive and industrial ambient environments |
| AEC-Q101 Qualified | Yes - validates reliability for automotive electronics per stress-test requirements |
Pinout & Package
Package: SOT23 - 3-terminal surface-mount plastic package with matte tin-plated Alloy 42 leadframe, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Cathode-side reference node | Connected to ground or lower-potential rail; reverse-biased operation requires cathode at higher potential |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage node; conducts when forward voltage exceeds 0.9 V or reverse voltage exceeds 6.8 V |
| No-Connect (Pin 3) | Internal die attach pad | Electrically isolated; serves mechanical support only - must not be connected in circuit layout |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ tolerance (±5.9%) and repeatable breakdown behavior across production lots |
| AEC-Q101 qualification | Validates robustness against temperature cycling, HAST, and mechanical shock for automotive ECUs |
| Lead-free & Green compliant | Meets RoHS 3 (2015/863/EU) and halogen-free (<900 ppm Br+Cl, <1000 ppm Sb) requirements |
| Automated assembly optimized | SOT23 footprint and matte tin plating ensure reliable solder paste release and reflow wetting |
| Low thermal resistance | 357 °C/W RθJA allows direct PCB mounting without thermal vias in ≤100 mW applications |
Applications
| Automotive Sensor Biasing | Industrial I/O Protection |
|---|---|
Use Scenario: Providing stable 6.8 V reference for analog front-end amplifiers in engine coolant temperature sensors. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC input scaling and op-amp biasing. Use Value: Maintains ±0.4 V regulation window across –40 to +125 °C ambient, minimizing sensor offset drift. |
Use Scenario: Clamping transient surges on 24 V PLC digital input lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Overvoltage protection element shunting ESD or inductive kickback above 7.2 V. Use Value: Limits voltage excursion to <7.2 V within 10 ns, preventing damage to downstream logic inputs. |
| USB Port Voltage Clamp | Low-Power MCU Reset Circuit |
Use Scenario: Protecting USB 2.0 data line receivers from 15 kV HBM ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Fast-response transient voltage suppressor placed in series with 100 Ω termination. Use Value: Delivers <2.0 µA leakage at 3.3 V, preserving signal integrity while clamping >6.8 V transients. |
Use Scenario: Generating clean reset pulse for ARM Cortex-M0 microcontrollers during 3.3 V power-up sequencing. IC Role / Device Role / Timing Role: Zener-based RC delay element setting reset timeout via capacitor charging threshold. Use Value: Enables accurate 100 ms reset hold time using 1 µF capacitor and 15 Ω ZZT for predictable timing slope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5235B-7-F | 6.8 V nominal, 500 mW PD, 10 Ω ZZT at 20 mA - higher power but larger SOT23-3 footprint mismatch | Requires PCB layout revision due to different thermal pad geometry and higher IZT test current | Select when >200 mW transient clamping energy must be absorbed without derating |
| BZX84-C6V8,115 | Same 6.8 V VZ and SOT23 package, but Nexperia variant with 25 Ω ZZT and non-AEC-Q101 qualification | Lacks automotive stress-test validation; suitable only for commercial-grade consumer products | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with MMBZ5235B-7-F and BZX84-C6V8,115, BZX84C6V8-7-F offers optimal balance of automotive qualification, low-impedance regulation (15 Ω), and industry-standard SOT23 compatibility - making it preferred for safety-critical biasing where long-term parametric stability matters.
Availability
BZX84C6V8-7-F is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, USB interface protection circuits, and low-power MCU reset networks requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for BZX84C6V8-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
BZX84C6V8-7-F belongs to the BZX84C series of precision Zener diodes engineered for voltage regulation and reference applications in space-constrained, high-reliability systems - especially automotive, industrial, and computing peripherals.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C6V8-7-F?
The BZX84C6V8-7-F has a nominal zener voltage of 6.8 V, with guaranteed breakdown occurring between 6.4 V and 7.2 V at 5 mA test current (IZT). Below 4.0 V, reverse leakage remains ≤2.0 µA - confirming no conduction until near the specified zener threshold.
Is BZX84C6V8-7-F suitable for use in automotive applications?
Yes - BZX84C6V8-7-F is explicitly qualified to AEC-Q101 standards, including temperature cycling, high-acceleration stress testing, and humidity exposure. Its operating range (–65 to +150 °C) and green/halogen-free construction meet automotive electronics requirements for engine control, body electronics, and ADAS sensor interfaces.
How does the SOT23 package affect thermal performance?
In the SOT23 package, BZX84C6V8-7-F achieves 357 °C/W junction-to-ambient thermal resistance when terminals are held at ambient temperature. On standard FR-4 PCB with recommended pad layout, RθJA rises to 417 °C/W - limiting continuous power to ~250 mW at +70 °C ambient to maintain TJ ≤ +150 °C.
Can BZX84C6V8-7-F replace older BZX84C6V8 variants with different suffixes?
Yes - the "-7-F" suffix denotes 3,000-piece tape-and-reel packaging and lead-free/Green compliance. Electrically and dimensionally identical to other BZX84C6V8 variants (e.g., -13-F or Q-7-F), it is fully interchangeable unless automotive qualification (Q-suffix) is specifically required for the target application.
BZX84C6V8-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- 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:
- ±6%
- Power - Max:
- 300 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:
- SOT-23-3
BZX84C6V8-7-F FAQ
1.How can I place an order for BZX84C6V8-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C6V8-7-F 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 BZX84C6V8-7-F reliable?
The price and inventory of BZX84C6V8-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C6V8-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C6V8-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C6V8-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C6V8-7-F?
BZX84C6V8-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C6V8-7-F 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 BZX84C6V8-7-F?
For technical support, including BZX84C6V8-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C6V8-7-F requirements.
6.How does Aetrix verify that BZX84C6V8-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C6V8-7-F 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 BZX84C6V8-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C6V8-7-F?
All BZX84C6V8-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C6V8-7-F, 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 BZX84C6V8-7-F part is unused and in its original packaging.
Return procedure for BZX84C6V8-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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