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Diodes Incorporated BZX84C8V2-7
- Part No.:
- BZX84C8V2-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C8V2-7.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,336
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Product details
Overview
BZX84C8V2-7 from Diodes Incorporated is a 350 mW surface-mount Zener diode with a nominal zener voltage of 8.2 V (±0.5 V tolerance), 15 Ω maximum zener impedance at 5 mA test current, and 0.7 µA maximum reverse leakage at 5.0 V. It operates across –65 °C to +150 °C and is used for precision voltage regulation and overvoltage protection in low-power analog sensor interfaces and power supply feedback paths.
For engineers reviewing the BZX84C8V2-7 datasheet, BZX84C8V2-7 pinout, BZX84C8V2-7 application, or BZX84C8V2-7 equivalent, key selection criteria include zener voltage accuracy at 5 mA, thermal resistance (357 °C/W), SOT23 package compatibility, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode employs planar die construction for stable breakdown characteristics and low dynamic impedance. Its 8.2 V nominal zener voltage exhibits a +3.2 mV/°C temperature coefficient, enabling predictable drift compensation in reference circuits.
The device delivers regulated voltage clamping under reverse bias with 15 Ω zener impedance at IZT = 5 mA and maintains ≤0.7 µA reverse current at VR = 5.0 V - critical for low-quiescent-current bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal (7.7–8.7 V range at IZT = 5 mA); sets precise clamping threshold in voltage-reference designs. |
| Power Dissipation | 350 mW at TA = 25 °C; supports continuous regulation in compact SOT23 footprint without forced cooling. |
| Zener Impedance | 15 Ω max at 1 kHz, IZT = 5 mA; ensures minimal output voltage variation under load transients. |
| Reverse Leakage | 0.7 µA max at VR = 5.0 V; preserves signal integrity in high-impedance biasing and sensing nodes. |
| Temperature Coefficient | +3.2 mV/°C at IZT = 5 mA; enables predictable thermal drift modeling in precision references. |
| Thermal Resistance | 357 °C/W junction-to-ambient (free-air); defines safe operating margin for PCB layout without heatsinking. |
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) | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; anchors cathode-side reference point. |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; establishes regulated voltage drop when reverse biased above 8.2 V. |
| No-Connect (Pin 3) | Internal die attach flag | Electrically isolated; serves mechanical support only - must remain unconnected in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener voltage distribution and low parameter drift over time and temperature. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics requiring high-reliability voltage references. |
| Lead-free & halogen-free | Fully RoHS 3 compliant (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb); meets green manufacturing requirements for industrial and consumer end equipment. |
| SOT23 tape-and-reel packaging | Enables direct placement on automated SMT lines with 3,000-unit reels; reduces assembly cost and handling risk. |
Applications
| Industrial Sensor Signal Conditioning | Automotive Power Supply Feedback |
|---|---|
Use Scenario: Stabilizing reference voltage for 4–20 mA current-loop transmitters in factory automation systems. IC Role / Device Role / Timing Role: Zener diode provides fixed 8.2 V reference for op-amp biasing and ADC reference scaling. Use Value: Tight 7.7–8.7 V tolerance and low 15 Ω impedance maintain ±0.5% reference accuracy across temperature and load. |
Use Scenario: Regulating feedback voltage in buck converter ICs powering infotainment head units. IC Role / Device Role / Timing Role: Shunt regulator establishes stable 8.2 V threshold for optocoupler-driven feedback path. Use Value: AEC-Q101 qualification and –65 °C to +150 °C operation ensure reliability in under-hood thermal environments. |
| Portable Medical Device Power Monitoring | IoT Node Battery Voltage Supervision |
Use Scenario: Detecting low-battery condition in handheld pulse oximeters using resistive divider + Zener clamp. IC Role / Device Role / Timing Role: Zener acts as precision voltage threshold detector in comparator input stage. Use Value: 0.7 µA reverse leakage prevents measurable current drain during standby, extending battery life. |
Use Scenario: Providing overvoltage lockout for Li-ion battery charging circuits in smart home sensors. IC Role / Device Role / Timing Role: Clamps input rail to 8.2 V during surge events to protect downstream LDOs and microcontrollers. Use Value: 350 mW power rating sustains 100 ms transient surges without degradation, per IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5233BS-7-F | 8.2 V nominal, but 20 Ω zener impedance (vs. 15 Ω) and 1.0 µA reverse leakage at 5 V (vs. 0.7 µA). | Higher impedance limits regulation accuracy in high-precision references; acceptable for general-purpose clamping. | Select when cost sensitivity outweighs tight regulation needs and AEC-Q101 is not required. |
| BZX84-C8V2,115 | Same electrical specs, but packaged in 10,000-unit tape-and-reel (–13-F suffix) and manufactured by Nexperia. | Identical performance and SOT23 footprint; differs only in traceability and qualification documentation. | Select for volume procurement where dual-sourcing or alternate logistics are prioritized. |
Compared with MMBZ5233BS-7-F and BZX84-C8V2,115, the BZX84C8V2-7 offers superior regulation stability (lower ZZT), tighter leakage control, and automotive-grade qualification - making it optimal for safety-critical or high-accuracy voltage reference roles.
Availability
BZX84C8V2-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive power feedback, portable medical monitoring, and IoT battery supervision requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84C8V2-7 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, energy-efficient components for automotive, industrial, and consumer markets.
The BZX84 series belongs to Diodes' precision Zener diode product line, engineered for stable voltage reference and overvoltage protection in space-constrained, thermally demanding applications.
FAQ
What is the maximum power dissipation of BZX84C8V2-7 at 70°C ambient?
At 70°C ambient, the BZX84C8V2-7 derates linearly from its 350 mW rating at 25°C. Using the 357 °C/W thermal resistance, the allowable power drops to approximately 215 mW - calculated as 350 mW × (1 − (70 − 25)/357). This ensures safe operation without exceeding 150°C junction temperature.
Is BZX84C8V2-7 suitable for use in automotive ECUs?
Yes - BZX84C8V2-7 is qualified to AEC-Q101 standards and rated for –65 °C to +150 °C operation. Its planar die construction, low leakage, and stable zener voltage make it appropriate for engine control unit voltage references and CAN bus power rail protection circuits.
How does the 8.2 V zener voltage tolerance affect circuit design?
The BZX84C8V2-7 has a guaranteed 7.7–8.7 V range at 5 mA. Designers must account for this ±0.5 V spread in feedback divider calculations or reference buffer gain stages - especially in 12-bit ADC systems where 0.5 V error represents ~12 LSBs at 3.3 V full scale.
Can BZX84C8V2-7 replace BZX84C8V2 in existing PCB layouts?
Yes - both share identical SOT23 package dimensions, pinout (anode/cathode/no-connect), and thermal profile. The "-7" suffix denotes 3,000-unit tape-and-reel packaging; no layout or schematic changes are needed for drop-in replacement in production or rework scenarios.
BZX84C8V2-7 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:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±6%
- 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
BZX84C8V2-7 FAQ
1.How can I place an order for BZX84C8V2-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C8V2-7 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 BZX84C8V2-7 reliable?
The price and inventory of BZX84C8V2-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C8V2-7 is usually 5 days.
3.What payment methods are accepted for BZX84C8V2-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C8V2-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C8V2-7?
BZX84C8V2-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C8V2-7 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 BZX84C8V2-7?
For technical support, including BZX84C8V2-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C8V2-7 requirements.
6.How does Aetrix verify that BZX84C8V2-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C8V2-7 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 BZX84C8V2-7 meets industry standards.
7.What is the process for return or replacement of BZX84C8V2-7?
All BZX84C8V2-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C8V2-7, 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 BZX84C8V2-7 part is unused and in its original packaging.
Return procedure for BZX84C8V2-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C8V2-7 Tags
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