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Diodes Incorporated BZX84C6V8Q-7-F
- Part No.:
- BZX84C6V8Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C6V8Q-7-F.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,980
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Product details
Overview
BZX84C6V8Q-7-F from Diodes Incorporated is an automotive-grade 6.8V, 350mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and overvoltage protection in low-power analog and digital circuits. It delivers a nominal Zener voltage of 6.8V at 5mA test current, with ±0.4V tolerance (6.4–7.2V), 15Ω dynamic impedance at 5mA, and 2µA maximum reverse leakage at 4V.
For engineers reviewing the BZX84C6V8Q-7-F datasheet, BZX84C6V8Q-7-F pinout, BZX84C6V8Q-7-F application, or BZX84C6V8Q-7-F equivalent, key selection criteria include Zener voltage stability across temperature, low dynamic impedance for tight regulation, AEC-Q101 qualification for automotive reliability, and SOT23 compatibility with high-volume automated assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent electrical performance and long-term reliability, while the matte tin-plated Alloy 42 leadframe guarantees solderability per MIL-STD-202.
The device exhibits a positive temperature coefficient of +1.2mV/°C near 6.8V, enabling predictable drift behavior in bias networks. Thermal resistance junction-to-ambient is 357°C/W under free-air conditions with terminals held at ambient temperature, supporting operation from –65°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8V nominal at 5mA; maintains regulation within 6.4–7.2V across production lot and temperature. |
| Power Dissipation | 350mW maximum; supports continuous operation in compact PCB layouts without forced cooling. |
| Zener Impedance (ZZT) | 15Ω at 5mA; ensures minimal output voltage variation under dynamic load changes. |
| Reverse Leakage (IR) | 2.0µA max at 4.0V; enables low-quiescent-current biasing in battery-powered systems. |
| Temperature Coefficient | +1.2mV/°C at 6.8V; allows accurate thermal drift compensation in precision references. |
| Package | SOT23; 3-pin surface-mount footprint compatible with standard pick-and-place and reflow processes. |
Pinout & Package
Package: SOT23 - three-terminal plastic-molded case with UL 94V-0 flammability rating, moisture sensitivity level 1, and matte tin finish on Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to circuit ground or lower-potential node when used in reverse-biased regulation. |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 6.8V reference relative to anode; connects to load or feedback network. |
| No Connection (Pin 3) | Internal die attach pad / thermal relief | Electrically isolated; serves as mechanical anchor and minor thermal path-no external connection required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics. |
| Green molding compound | Halogen- and antimony-free (<900ppm Br, <900ppm Cl, <1000ppm Sb), compliant with RoHS 3. |
| Low Zener impedance | 15Ω at 5mA enables <±10mV regulation error under ±1mA load step changes. |
| Automated assembly optimized | Planar die and precise SOT23 dimensions ensure >99.9% placement yield in high-speed SMT lines. |
Applications
| Automotive Sensor Biasing | Industrial Analog Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in engine coolant and exhaust gas temperature modules. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric ADC measurement front-ends. Use Value: Maintains ±0.5% reference accuracy over –40°C to +125°C, directly improving temperature measurement resolution by 12-bit effective ENOB. |
Use Scenario: Generating fixed 6.8V reference for programmable logic controller (PLC) analog input channel calibration. IC Role / Device Role / Timing Role: Shunt regulator establishing known voltage threshold for DAC output verification. Use Value: Enables traceable 0.1% full-scale calibration against NIST-traceable standards without external instrumentation. |
| USB Port Overvoltage Protection | IoT Node Power Sequencing |
Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events in automotive infotainment head units. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting voltage to 7.2V peak during ESD or load-dump transients. Use Value: Absorbs 350mW for >100ms without degradation, meeting ISO 10605 Class 3B ESD immunity requirements. |
Use Scenario: Enabling controlled power-up sequencing of ultra-low-power microcontrollers and RF transceivers in battery-operated smart sensors. IC Role / Device Role / Timing Role: Voltage supervisor trigger element that asserts reset until supply stabilizes at ≥6.4V. Use Value: Guarantees deterministic boot state with <1µA quiescent current, extending coin-cell battery life to >10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4687T1G | 6.8V nominal, 500mW rating, 10Ω ZZT, non-AEC-Q101, SOD-123 package | Higher power handling but larger footprint; lacks automotive qualification and green compliance | Select when higher surge energy absorption is needed and AEC-Q101 is not required. |
| BZX84-C6V8-7-F | Identical electrical specs and SOT23 package, but rated for commercial temperature range (–65°C to +150°C same, but no AEC-Q101 validation) | Approved for industrial/commercial use only; not permitted in automotive ECUs per OEM design rules | Choose for cost-sensitive non-automotive designs where AEC-Q101 is unnecessary. |
Compared with MMSZ4687T1G and BZX84-C6V8-7-F, BZX84C6V8Q-7-F uniquely combines AEC-Q101 qualification, halogen-free green construction, and SOT23 compatibility-making it the only option approved for safety-critical automotive voltage reference functions without derating or additional qualification effort.
Availability
BZX84C6V8Q-7-F is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog reference generation, USB port overvoltage protection, and IoT node power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84C6V8Q-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, specializing in high-reliability components for automotive, industrial, and consumer markets.
This device belongs to the BZX84C automotive Zener diode family, engineered specifically to meet stringent AEC-Q101 stress-test requirements while maintaining tight voltage tolerances and low dynamic impedance for precision analog subsystems.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The BZX84C6V8Q-7-F has a nominal Zener voltage of 6.8V at 5mA test current, with a guaranteed breakdown range of 6.4V to 7.2V. It begins regulating in reverse breakdown at approximately 6.4V and maintains stable voltage up to its 350mW power limit. Below 4.0V reverse bias, leakage remains ≤2.0µA.
Is this part suitable for use in a 12V automotive system's voltage clamp circuit?
Yes-it is AEC-Q101 qualified and rated for operation from –65°C to +150°C. When used with a series current-limiting resistor (e.g., 1kΩ), it clamps transients to ≤7.2V, protecting downstream 5V or 3.3V logic. Its 350mW rating handles typical load-dump spikes lasting <100ms without failure.
How does the temperature coefficient affect regulation accuracy over temperature?
With a +1.2mV/°C temperature coefficient at 6.8V, the Zener voltage increases by ~120mV from –40°C to +125°C-a total drift of ±0.88%. This is acceptable for most bias and reference applications; for tighter stability, pair with a negative-TC component or use in closed-loop feedback.
Can this diode replace a BZX84C6V8-7-F in an existing design?
Yes-mechanically and electrically identical in SOT23 package and Zener characteristics-but BZX84C6V8Q-7-F adds AEC-Q101 qualification and green material compliance. No layout or schematic changes are needed; however, automotive programs must verify qualification documentation for OEM compliance audits.
BZX84C6V8Q-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:
- ±5.88%
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C6V8Q-7-F FAQ
1.How can I place an order for BZX84C6V8Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C6V8Q-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 BZX84C6V8Q-7-F reliable?
The price and inventory of BZX84C6V8Q-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 BZX84C6V8Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C6V8Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C6V8Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C6V8Q-7-F?
BZX84C6V8Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C6V8Q-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 BZX84C6V8Q-7-F?
For technical support, including BZX84C6V8Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C6V8Q-7-F requirements.
6.How does Aetrix verify that BZX84C6V8Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C6V8Q-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 BZX84C6V8Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C6V8Q-7-F?
All BZX84C6V8Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C6V8Q-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 BZX84C6V8Q-7-F part is unused and in its original packaging.
Return procedure for BZX84C6V8Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C6V8Q-7-F Tags
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