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Diodes Incorporated BZX84B6V8Q-7-F
- Part No.:
- BZX84B6V8Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B6V8Q-7-F.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,955
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Product details
Overview
BZX84B6V8Q-7-F from Diodes Incorporated is an AEC-Q101-qualified surface-mount precision Zener diode with nominal 6.8 V zener voltage (±2% tolerance), 350 mW power dissipation, and 15 Ω dynamic impedance at 5 mA test current. It operates across –65 °C to +150 °C and is used for voltage regulation and reference in automotive body control modules.
For engineers reviewing the BZX84B6V8Q-7-F datasheet, BZX84B6V8Q-7-F pinout, BZX84B6V8Q-7-F application, or BZX84B6V8Q-7-F equivalent, key selection criteria include its ±2% VZ tolerance, low 15 Ω ZZT, AEC-Q101 qualification, SOT23 package compatibility, and thermal resistance of 357 °C/W under ambient-terminal conditions.
Technical Context
This Zener diode delivers stable voltage reference performance with a temperature coefficient of +1.2 mV/°C at 4.0 V reverse bias and exhibits low leakage (≤2.0 µA at 4.0 V) and tight 6.66–6.94 V zener range. Its 350 mW rating applies when terminals are held at ambient temperature, enabling reliable operation in thermally constrained PCB layouts.
The device uses a planar epitaxial construction with matte tin-plated Alloy 42 leads and green molding compound compliant with RoHS 3, halogen-free, and antimony-free standards. Polarity is defined by cathode band marking on the SOT23 package top view.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V nominal, 6.66–6.94 V range at 5 mA - ensures precise voltage clamping in feedback loops |
| Zener Impedance (ZZT) | 15 Ω at IZT = 5 mA - minimizes output voltage variation under load transients |
| Power Dissipation (PD) | 350 mW at ambient-terminal condition - supports higher continuous power than FR-4-mounted 300 mW derating |
| Reverse Leakage (IR) | ≤2.0 µA at VR = 4.0 V - reduces quiescent current loss in low-power voltage monitors |
| Temp. Coefficient (αVZ) | +1.2 mV/°C at 4.0 V - enables predictable drift compensation in temperature-sensitive references |
| Thermal Resistance (RθJA) | 357 °C/W - defines junction-to-ambient rise per watt when leads are actively cooled |
| Operating Temp. Range | –65 °C to +150 °C - validated for under-hood automotive environments per AEC-Q101 |
Pinout & Package
Package: SOT23 - three-terminal surface-mount plastic case with 0.008 g mass, UL 94V-0 flammability rating, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during reverse-bias regulation; requires proper PCB polarity alignment |
| Cathode (Pin 2) | Zener breakdown terminal | Marked with band on top view; connects to regulated voltage rail or error amplifier input |
| Collector / Heat Sink (Pin 3) | Common leadframe connection | Electrically tied to cathode internally; serves as primary thermal path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct replacement in high-accuracy 6.8 V reference designs without recalibration |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and lighting drivers |
| SOT23 footprint compatibility | Supports automated pick-and-place assembly and reflow soldering per J-STD-020 Level 1 |
| Halogen- and antimony-free "Green" construction | Meets EU RoHS 3 (2015/863/EU) with Br+Cl <1500 ppm and Sb <1000 ppm |
| Low 15 Ω dynamic impedance | Reduces output ripple in LDO feedback networks and analog sensor biasing circuits |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring door lock status and window position. IC Role / Device Role / Timing Role: Precision voltage reference for analog front-end comparators and ADC reference buffers. Use Value: ±2% VZ tolerance ensures consistent threshold detection across temperature and unit variance. |
Use Scenario: Providing stable 6.8 V bias to bridge-based pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Low-drift voltage reference source for Wheatstone bridge excitation. Use Value: +1.2 mV/°C tempco allows predictable offset correction in 0–70 °C operating range. |
| USB-C Power Delivery Monitor | Medical Infusion Pump Voltage Supervisor |
Use Scenario: Clamping overvoltage on CC line monitoring circuitry during USB PD negotiation. IC Role / Device Role / Timing Role: Transient voltage suppressor and precision clamp for logic-level signal integrity. Use Value: 15 Ω ZZT limits clamping voltage excursion to <100 mV above 6.8 V during fast transients. |
Use Scenario: Monitoring main supply rail in battery-powered infusion pumps to trigger low-voltage shutdown. IC Role / Device Role / Timing Role: Low-leakage (≤2 µA) voltage supervisor reference for comparator hysteresis. Use Value: Sub-µA reverse current preserves battery life while maintaining accurate 6.8 V trip point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4688-7-F | 6.8 V nominal, ±5% tolerance, 500 mW PD, 30 Ω ZZT at 5 mA | Higher power but looser tolerance and higher impedance - suitable for non-critical clamping | Select when cost or power margin outweighs precision requirements |
| BZX84-C6V8,115 | 6.8 V nominal, ±5% tolerance, 350 mW PD, 40 Ω ZZT at 5 mA, no AEC-Q101 | Lacks automotive qualification and has higher impedance - limited to commercial-grade systems | Choose only for non-automotive consumer electronics with relaxed reliability needs |
Compared with MMSZ4688-7-F and BZX84-C6V8,115, BZX84B6V8Q-7-F provides tighter ±2% tolerance, lower 15 Ω impedance, and AEC-Q101 validation-making it the sole choice for automotive voltage reference designs requiring long-term stability and thermal robustness.
Availability
BZX84B6V8Q-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C power delivery monitors, and medical infusion pump voltage supervisors requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for BZX84B6V8Q-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 computing markets.
The BZX84B series belongs to Diodes' precision Zener diode product line, engineered specifically for AEC-Q101-compliant voltage regulation and reference in space-constrained, thermally demanding automotive subsystems.
FAQ
What is the maximum reverse voltage (VR) this Zener can withstand before breakdown?
The BZX84B6V8Q-7-F has a nominal zener voltage of 6.8 V, with guaranteed breakdown occurring between 6.66 V and 6.94 V at 5 mA test current. It is not rated for sustained reverse voltage above its specified VZ range; operation beyond 6.94 V risks exceeding power limits unless current is strictly limited by external series resistance.
Does this part support reflow soldering, and what profile is recommended?
Yes, BZX84B6V8Q-7-F is qualified for lead-free reflow soldering per J-STD-020 Level 1 moisture sensitivity. Diodes Incorporated recommends peak temperatures ≤260 °C, with time above 217 °C limited to 60–150 seconds, using standard Pb-free profiles compatible with SOT23 packages.
How does the +1.2 mV/°C temperature coefficient affect circuit accuracy over –40 °C to +125 °C?
Over that 165 °C span, the coefficient contributes up to ±0.20 V drift (165 × 1.2 mV) relative to 25 °C. Combined with initial ±2% tolerance (±0.136 V), total worst-case VZ variation is ±0.336 V - critical for designs requiring better than ±3% absolute accuracy across temperature.
Can this Zener be used in parallel for higher power handling?
No - Zener diodes exhibit manufacturing variations in VZ and dynamic impedance, causing current imbalance and thermal runaway when paralleled. For higher power, use a single higher-rated device or implement active regulation; do not rely on parallel BZX84B6V8Q-7-F units.
BZX84B6V8Q-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:
- ±2%
- 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
BZX84B6V8Q-7-F FAQ
1.How can I place an order for BZX84B6V8Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B6V8Q-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 BZX84B6V8Q-7-F reliable?
The price and inventory of BZX84B6V8Q-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 BZX84B6V8Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84B6V8Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B6V8Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B6V8Q-7-F?
BZX84B6V8Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B6V8Q-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 BZX84B6V8Q-7-F?
For technical support, including BZX84B6V8Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B6V8Q-7-F requirements.
6.How does Aetrix verify that BZX84B6V8Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84B6V8Q-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 BZX84B6V8Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84B6V8Q-7-F?
All BZX84B6V8Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B6V8Q-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 BZX84B6V8Q-7-F part is unused and in its original packaging.
Return procedure for BZX84B6V8Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84B6V8Q-7-F Tags
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