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Diodes Incorporated BZX84B8V2Q-7-F
- Part No.:
- BZX84B8V2Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B8V2Q-7-F.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,575
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Product details
Overview
BZX84B8V2Q-7-F from Diodes Incorporated is an AEC-Q101 qualified surface-mount precision Zener diode with nominal 8.2 V zener voltage (±2% tolerance), 350 mW power dissipation, and 15 Ω dynamic impedance at 5 mA test current - used for voltage regulation and reference in automotive power supply monitoring circuits.
For engineers reviewing the BZX84B8V2Q-7-F datasheet, BZX84B8V2Q-7-F pinout, BZX84B8V2Q-7-F application, or BZX84B8V2Q-7-F equivalent, key selection criteria include zener voltage stability over temperature (3.2 mV/°C TC), low reverse leakage (0.7 µA at 5.0 V), SOT23 package compatibility with automated assembly, and automotive-grade reliability qualification.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable reference voltage under varying load and temperature conditions. Its ±2% VZ tolerance at IZT = 5 mA and low 15 Ω zener impedance ensure tight regulation in feedback loops and sensing nodes.
The device exhibits a positive temperature coefficient of +3.2 mV/°C above 6 V, enabling predictable drift compensation in voltage references. It is rated for continuous operation from –65 °C to +150 °C and meets AEC-Q101 stress testing requirements for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal, 8.04–8.36 V range at 5 mA - enables precise 8.2 V rail clamping or reference generation |
| Power Dissipation | 350 mW at TA = 25 °C - supports sustained regulation in compact SOT23 footprint without forced cooling |
| Zener Impedance (ZZT) | 15 Ω at 5 mA - ensures minimal output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | 0.7 µA max at 5.0 V - reduces quiescent current error in high-impedance bias networks |
| Temperature Coefficient | +3.2 mV/°C - allows predictable voltage drift modeling for temperature-compensated designs |
| Package | SOT23 - compatible with standard pick-and-place equipment and IPC-7351B land patterns |
Pinout & Package
Package: SOT23 - three-terminal surface-mount plastic case with matte tin-plated alloy 42 leadframe; moisture sensitivity level 1 per J-STD-020; weight ≈ 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Cathode-side connection in reverse-biased configuration | Connected to lower-potential node; polarity must be observed to avoid forward conduction |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage node; carries full zener current during regulation |
| No-Connect / Heat Sink (Pin 3) | Internal die attach pad (non-functional) | Not electrically connected; serves mechanical anchoring and thermal path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Reduces need for post-production trimming in voltage reference circuits |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics with extended temperature cycling and HTRB |
| Lead-free & halogen-free "Green" construction | Complies with RoHS 3 (2015/863/EU) and JEDEC JS709C material definitions |
| Low 0.7 µA reverse leakage at 5 V | Minimizes error in high-resistance voltage divider-based sensing networks |
Applications
| Automotive Battery Monitoring | Industrial Sensor Reference |
|---|---|
Use Scenario: Monitoring 12 V battery voltage in engine control units with microcontroller ADC input. IC Role / Device Role / Timing Role: Precision voltage reference for analog front-end scaling and overvoltage clamp. Use Value: ±2% VZ tolerance and +3.2 mV/°C TC enable accurate state-of-charge estimation across –40 °C to +125 °C ambient. |
Use Scenario: Providing stable 8.2 V reference for RTD or thermistor signal conditioning in PLC analog inputs. IC Role / Device Role / Timing Role: Low-drift shunt reference replacing higher-cost bandgap ICs in isolated sensor interfaces. Use Value: 15 Ω zener impedance and 0.7 µA leakage support <0.1% reference error in 10 kΩ divider networks. |
| USB-C Power Delivery Clamp | Motor Drive Gate Bias Stabilization |
Use Scenario: Overvoltage protection on USB-C VBUS line during hot-plug transients. IC Role / Device Role / Timing Role: Fast-response shunt clamp limiting peak voltage to 8.36 V during ESD or surge events. Use Value: 350 mW rating and SOT23 thermal resistance (357 °C/W) sustain 100 ms transient clamping without thermal runaway. |
Use Scenario: Stabilizing gate drive voltage for N-channel MOSFETs in 24 V industrial motor inverters. IC Role / Device Role / Timing Role: Zener clamp regulating bootstrap capacitor voltage against overshoot during switching transitions. Use Value: Low 15 Ω impedance maintains gate voltage within ±0.15 V under 10 mA dynamic current spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4701T1G | 8.2 V nominal, ±5% tolerance, 500 mW rating, SOD-123 package | Higher power but looser tolerance; larger footprint limits high-density layouts | Select when higher surge energy handling is required and board space permits SOD-123 |
| BZX84-C8V2 | 8.2 V nominal, ±5% tolerance, non-automotive grade, same SOT23 package | Lacks AEC-Q101 qualification and tighter tolerance; unsuitable for automotive use | Acceptable only for cost-sensitive consumer applications where qualification is not mandated |
Compared with MMSZ4701T1G and BZX84-C8V2, BZX84B8V2Q-7-F uniquely delivers automotive qualification, ±2% tolerance, and SOT23 compatibility - making it optimal for space-constrained, safety-critical voltage reference and clamp functions.
Availability
BZX84B8V2Q-7-F is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial sensor reference, USB-C power delivery clamp, and motor drive gate bias stabilization requiring stable component supply and AEC-Q101 compliance.
Supply support for BZX84B8V2Q-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 and manufacturing operations across Asia and the Americas.
The BZX84B series belongs to Diodes' precision Zener diode product line, engineered specifically for automotive and industrial applications demanding tight voltage tolerance, high reliability, and RoHS-compliant packaging.
FAQ
What is the maximum reverse voltage this Zener can regulate before breakdown?
The BZX84B8V2Q-7-F has a nominal zener voltage of 8.2 V with a guaranteed range of 8.04 V to 8.36 V at 5 mA test current. Breakdown begins near the lower limit and stabilizes across the specified range; operation below 8.04 V results in negligible reverse current (<0.7 µA at 5.0 V).
Is this part suitable for use in a 12 V automotive system's overvoltage protection circuit?
Yes - its 8.2 V zener voltage provides safe margin below typical 13.5–14.5 V alternator output, and its AEC-Q101 qualification ensures robustness against automotive temperature cycling, vibration, and load dump transients up to 350 mW.
How does the +3.2 mV/°C temperature coefficient affect long-term voltage accuracy?
Over a –40 °C to +125 °C range, the coefficient contributes ±0.53 V drift (165 °C × 3.2 mV/°C), resulting in total VZ shift from ~7.7 V to ~8.7 V. For high-accuracy systems, this must be compensated via calibration or paired with negative-TC components.
Can this Zener diode replace a 3-terminal voltage reference IC in low-power applications?
It can serve as a simple, low-cost shunt reference where ±2% initial accuracy and moderate temperature drift are acceptable - e.g., in comparator thresholds or ADC scaling. However, it lacks the ultra-low drift, low noise, and buffered output of dedicated reference ICs like TL431 or REF50xx.
BZX84B8V2Q-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):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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
BZX84B8V2Q-7-F FAQ
1.How can I place an order for BZX84B8V2Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B8V2Q-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 BZX84B8V2Q-7-F reliable?
The price and inventory of BZX84B8V2Q-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 BZX84B8V2Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84B8V2Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B8V2Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B8V2Q-7-F?
BZX84B8V2Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B8V2Q-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 BZX84B8V2Q-7-F?
For technical support, including BZX84B8V2Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B8V2Q-7-F requirements.
6.How does Aetrix verify that BZX84B8V2Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84B8V2Q-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 BZX84B8V2Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84B8V2Q-7-F?
All BZX84B8V2Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B8V2Q-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 BZX84B8V2Q-7-F part is unused and in its original packaging.
Return procedure for BZX84B8V2Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84B8V2Q-7-F Tags
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