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Diodes Incorporated BZX84B8V2-7-F
- Part No.:
- BZX84B8V2-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B8V2-7-F.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,860
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Product details
Overview
BZX84B8V2-7-F from Diodes Incorporated is a precision 8.2 V ±2% tolerance Zener diode in SOT23 package, rated for 350 mW power dissipation at 25°C ambient, with 15 Ω typical Zener impedance at 5 mA test current and 0.7 µA maximum reverse leakage at 5.0 V, widely used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZX84B8V2-7-F datasheet, BZX84B8V2-7-F pinout, BZX84B8V2-7-F application, or BZX84B8V2-7-F equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (357 °C/W), junction-to-ambient derating behavior, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its ±2% VZ tolerance, low 15 Ω dynamic impedance at IZT = 5 mA, and 3.2 mV/°C temperature coefficient enable precise voltage referencing in feedback loops and protection circuits.
The device is qualified to AEC-Q101 standards and features halogen- and antimony-free "Green" construction with matte tin lead finish. Its SOT23 package supports automated assembly and delivers 350 mW power dissipation when leads are held at ambient temperature, with thermal resistance reduced to 357 °C/W under that condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal, 8.04–8.36 V range at 5 mA - ensures tight regulation for 8 V reference rails. |
| Power Dissipation (PD) | 350 mW at TA = 25°C with leads at ambient - defines maximum continuous steady-state power handling. |
| Zener Impedance (ZZT) | 15 Ω at IZT = 5 mA - low dynamic resistance minimizes output voltage variation under load changes. |
| Reverse Leakage (IR) | 0.7 µA max at VR = 5.0 V - guarantees minimal quiescent current in standby or sensing paths. |
| Temperature Coefficient | +6.2 mV/°C - positive drift enables predictable compensation in temperature-sensitive references. |
| Thermal Resistance (RθJA) | 357 °C/W - determines junction temperature rise per milliwatt under specified mounting conditions. |
| Package | SOT23 - surface-mount, 3-terminal plastic case enabling high-density PCB layout and reflow compatibility. |
Pinout & Package
Package: SOT23 - three-terminal surface-mount plastic package with standard pin configuration: Anode (Pin 1), Cathode (Pin 2), and Anode (Pin 3) - Pin 2 is cathode, Pins 1 & 3 internally connected to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Internally tied to Pin 3; connects to lower-potential side of regulated circuit or ground reference. |
| Pin 2 | Cathode | Zener output terminal; connects to regulated voltage node or feedback point in shunt regulator. |
| Pin 3 | Anode | Redundant anode connection; improves thermal and mechanical robustness in high-reliability layouts. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables accurate voltage setting without post-production trimming in precision analog references. |
| AEC-Q101 qualification | Validates suitability for automotive electronics including body control modules and sensor interfaces. |
| 350 mW power rating with 357 °C/W RθJA | Supports stable operation in compact industrial PCBs with limited airflow or heatsinking. |
| Halogen- and antimony-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive environmental compliance requirements. |
| SOT23 tape-and-reel packaging (3000 pcs) | Enables direct integration into high-speed pick-and-place assembly lines without manual handling. |
Applications
| Automotive Sensor Reference | Industrial Power Supply Feedback |
|---|---|
|
Use Scenario: Providing stable 8.2 V reference for analog signal conditioning in engine coolant temperature sensors. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining excitation voltage accuracy despite battery voltage fluctuations. Use Value: Enables <±1% measurement linearity over -40°C to +125°C due to matched TC and low ZZT. |
Use Scenario: Setting output voltage in isolated flyback converter feedback loop via optocoupler divider. IC Role / Device Role / Timing Role: Precision Zener element in secondary-side error amplifier reference path. Use Value: Maintains ±0.5% output regulation across 10–100% load with minimal temperature-induced drift. |
| Portable Medical Instrument Biasing | IoT Node Voltage Clamp |
|
Use Scenario: Generating clean bias for op-amp front-end stages in handheld ECG amplifiers. IC Role / Device Role / Timing Role: Low-noise DC reference source decoupled from noisy digital supply rails. Use Value: Delivers <10 µVpp noise floor and 0.7 µA leakage to extend battery life beyond 5 years. |
Use Scenario: Clamping microcontroller I/O pins against ESD transients in smart meter communication interfaces. IC Role / Device Role / Timing Role: Fast-response overvoltage protector limiting pin voltage to 8.36 V peak. Use Value: Survives >1000x IEC 61000-4-2 contact discharge events without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5236B-7-F | 8.2 V ±5% tolerance, 500 mW PD, 20 Ω ZZT, no AEC-Q101 qualification | Higher power but looser tolerance; suitable for non-automotive cost-sensitive designs | Select when higher power margin outweighs need for tight regulation and automotive qualification. |
| BZX84-C8V2 | 8.2 V ±5% tolerance, same SOT23 package, 350 mW, not AEC-Q101 qualified | Lacks automotive reliability validation and tighter tolerance; lower cost alternative | Choose for consumer-grade applications where ±5% VZ and non-automotive qualification are acceptable. |
Compared with MMSZ5236B-7-F and BZX84-C8V2, BZX84B8V2-7-F provides superior voltage accuracy (±2% vs. ±5%), guaranteed automotive qualification, and lower dynamic impedance-critical for closed-loop regulation and high-reliability sensing.
Availability
BZX84B8V2-7-F is available at Aetrix Electronics and suitable for automotive sensor modules, industrial power supplies, portable medical instrumentation, and IoT node protection circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84B8V2-7-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, serving industrial, computing, communications, and automotive markets with high-reliability components.
BZX84B series belongs to Diodes' precision Zener diode product line, engineered specifically for voltage reference and regulation in space-constrained, thermally demanding, and automotive-qualified applications.
FAQ
What is the maximum reverse voltage before breakdown for BZX84B8V2-7-F?
The nominal Zener voltage is 8.2 V with a guaranteed range of 8.04 V to 8.36 V at 5 mA test current. Breakdown occurs within this band; operation below 5.0 V reverse bias yields ≤0.7 µA leakage, confirming stable non-conduction outside the Zener region.
Can BZX84B8V2-7-F be used in place of a 5.1 V Zener diode?
No - BZX84B8V2-7-F is strictly an 8.2 V device and cannot substitute for 5.1 V Zeners like BZX84B5V1. Voltage mismatch would cause incorrect regulation or failure to clamp, potentially damaging downstream circuitry reliant on precise 5.1 V reference.
Is the SOT23 package lead-free and RoHS compliant?
Yes - BZX84B8V2-7-F uses matte tin plating over Alloy 42 leadframe, contains no intentionally added lead, and complies fully with EU RoHS 2 (2011/65/EU) and RoHS 3 (2015/863/EU) directives, as confirmed in Diodes Incorporated's official documentation.
How does thermal derating affect power handling above 25°C ambient?
Per Figure 1 in DS36159 Rev. 3, power dissipation linearly derates from 350 mW at 25°C to zero at ~150°C ambient. At 85°C ambient, maximum allowable power drops to approximately 240 mW, calculated using the 357 °C/W RθJA value and TJ limit of 150°C.
BZX84B8V2-7-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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84B8V2-7-F FAQ
1.How can I place an order for BZX84B8V2-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B8V2-7-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 BZX84B8V2-7-F reliable?
The price and inventory of BZX84B8V2-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B8V2-7-F is usually 5 days.
3.What payment methods are accepted for BZX84B8V2-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B8V2-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B8V2-7-F?
BZX84B8V2-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B8V2-7-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 BZX84B8V2-7-F?
For technical support, including BZX84B8V2-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B8V2-7-F requirements.
6.How does Aetrix verify that BZX84B8V2-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84B8V2-7-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 BZX84B8V2-7-F meets industry standards.
7.What is the process for return or replacement of BZX84B8V2-7-F?
All BZX84B8V2-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B8V2-7-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 BZX84B8V2-7-F part is unused and in its original packaging.
Return procedure for BZX84B8V2-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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