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Diodes Incorporated BZX84C8V2Q-7-F
- Part No.:
- BZX84C8V2Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C8V2Q-7-F.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
BZX84C8V2Q-7-F from Diodes Incorporated is an automotive-grade 8.2 V, 350 mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and overvoltage protection in low-power analog circuits. It delivers ±5% nominal Zener voltage tolerance at 5 mA test current, 15 Ω dynamic impedance, and 0.7 µA maximum reverse leakage at 6.2 V, with AEC-Q101 qualification for under-hood automotive applications.
For engineers reviewing the BZX84C8V2Q-7-F datasheet, BZX84C8V2Q-7-F pinout, BZX84C8V2Q-7-F application, or BZX84C8V2Q-7-F equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (357 °C/W), power derating behavior above 25°C, and automotive qualification status - all critical for stable reference and clamp functionality in sensor interfaces and power rail supervision.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 8.2 V reference across load and line variations. Its planar die construction ensures consistent voltage regulation and low temperature coefficient (+3.2 mV/°C), enabling predictable performance from −65°C to +150°C operating range.
The device exhibits 15 Ω Zener impedance at 5 mA and 80 Ω at knee current (1 mA), supporting both shunt regulation and transient clamping roles. Its 350 mW power rating applies under ambient-temperature terminal conditions, with derating to 300 mW on FR-4 PCB per JEDEC guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal, 7.7–8.7 V range at 5 mA - defines precise clamping threshold for 9 V rail protection |
| Power Dissipation | 350 mW at ambient-temperature terminals - supports continuous operation in thermally managed layouts |
| 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 6.2 V - enables low-quiescent-current biasing in battery-powered sensors |
| Temperature Coefficient | +3.2 mV/°C - allows accurate drift compensation in temperature-critical references |
| Thermal Resistance (RθJA) | 357 °C/W - informs PCB copper area requirements for thermal reliability at full power |
| Operating Temperature | −65°C to +150°C - validated for engine control unit and transmission control module environments |
Pinout & Package
Package: SOT23 - surface-mount plastic case with matte tin-plated Alloy 42 leadframe, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system GND or low-side return path; polarity must match schematic symbol orientation |
| Cathode (Pin 2) | Regulated output node | Connected to protected rail or reference point; reverse-biased during regulation/clamping |
| No-connect (Pin 3) | Internal die attach flag | Not electrically connected; serves mechanical support and thermal conduction only |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including powertrain and body control modules |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets RoHS 3 and OEM sustainability mandates |
| Planar die construction | Enables tight Zener voltage distribution and repeatable breakdown characteristics across production lots |
| SOT23 footprint | Compatible with high-speed pick-and-place assembly and reflow profiles per J-STD-020 |
| Low leakage at low voltage | 0.7 µA @ 6.2 V enables use in ultra-low-power wake-up circuits without compromising standby current |
Applications
| Automotive Sensor Signal Conditioning | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting 0–10 V analog inputs of engine coolant temperature sensors against load dump transients. IC Role / Device Role / Timing Role: Shunt voltage clamp placed between signal line and ground to limit excursion beyond 9 V. Use Value: Prevents ADC saturation and input stage damage while maintaining <1% gain error due to 15 Ω ZZT. |
Use Scenario: Regulating local 8.2 V reference for 16-bit sigma-delta ADC in programmable logic controller I/O modules. IC Role / Device Role / Timing Role: Precision voltage reference source with low tempco for stable conversion accuracy. Use Value: Enables ±0.05% full-scale accuracy over −40°C to +85°C ambient via +3.2 mV/°C compensation. |
| Consumer Power Adapter Feedback | Medical Instrument Overvoltage Clamp |
Use Scenario: Providing feedback voltage to optocoupler-based secondary-side regulation in 12 V wall adapters. IC Role / Device Role / Timing Role: Zener reference in TL431-like feedback divider network. Use Value: Maintains ±2% output regulation across line/load variations with 0.7 µA leakage minimizing divider error. |
Use Scenario: Clamping ESD pulses on patient-connected ECG electrode inputs before instrumentation amplifier. IC Role / Device Role / Timing Role: Fast-response transient voltage suppressor at front-end analog interface. Use Value: Limits voltage to ≤9 V within 10 ns while adding <0.5 pF parasitic capacitance to preserve signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4702T1G | 8.2 V nominal, 500 mW rating, 30 Ω ZZT, no AEC-Q101 qualification | Higher power margin but higher impedance and non-automotive grade | Select when board-level thermal design supports >350 mW and automotive qualification is not required |
| BZX84-C8V2-7-F | Identical electrical specs, same SOT23 package, but standard (non-automotive) qualification | Lacks AEC-Q101 validation; unsuitable for under-hood deployment | Acceptable for consumer or industrial applications where extended temperature reliability is not mandated |
Compared with MMSZ4702T1G and BZX84-C8V2-7-F, BZX84C8V2Q-7-F uniquely combines automotive qualification, low 15 Ω impedance, and green material compliance - making it the only choice for AEC-compliant 8.2 V reference designs requiring both precision and supply-chain traceability.
Availability
BZX84C8V2Q-7-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial analog input protection, and medical instrument front-end clamping requiring stable component supply with full AEC-Q101 traceability and RoHS 3 compliance.
Supply support for BZX84C8V2Q-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.
This part belongs to the BZX84C series of automotive-qualified Zener diodes, engineered specifically for voltage reference and overvoltage protection in harsh-environment electronics where AEC-Q101 validation and green material compliance are mandatory.
FAQ
What is the maximum reverse voltage (VR) this Zener can withstand before breakdown?
The BZX84C8V2Q-7-F has a nominal Zener voltage of 8.2 V at 5 mA, with a guaranteed breakdown range of 7.7–8.7 V. Its absolute maximum reverse voltage before destructive failure is not specified separately - operation beyond 8.7 V at rated current risks exceeding 350 mW dissipation and thermal runaway. For safe clamping, design margins should keep peak reverse voltage ≤9 V.
Does this part have a specified total capacitance value?
No specific capacitance value is listed for BZX84C8V2Q-7-F in the datasheet. However, Figure 5 shows typical total capacitance for 8.2 V Zeners is ~15 pF at 1 V reverse bias and ~10 pF at 2 V reverse bias, measured at 1 MHz. This low capacitance supports use in high-frequency signal paths without significant loading.
Can this Zener be used in series or parallel configurations?
Series connection is acceptable for higher-voltage references (e.g., two 8.2 V devices for ~16.4 V), provided current matching and thermal coupling are controlled. Parallel use is strongly discouraged due to mismatched Zener impedances and thermal runaway risk - even small voltage differences cause current hogging and localized overheating.
How does the "Q" suffix affect packaging and marking?
"Q" denotes automotive qualification per AEC-Q101 and corresponds to green (halogen/antimony-free) molding compound. Marking includes "Z7" as the type code and a date code (e.g., "YM") per Diodes' SOT23 top-view layout. Packaging is 3,000 units per tape-and-reel reel (7-F designation), with full traceability documentation for automotive PPAP submission.
BZX84C8V2Q-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:
- ±6.1%
- 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
BZX84C8V2Q-7-F FAQ
1.How can I place an order for BZX84C8V2Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C8V2Q-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 BZX84C8V2Q-7-F reliable?
The price and inventory of BZX84C8V2Q-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 BZX84C8V2Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C8V2Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C8V2Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C8V2Q-7-F?
BZX84C8V2Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C8V2Q-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 BZX84C8V2Q-7-F?
For technical support, including BZX84C8V2Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C8V2Q-7-F requirements.
6.How does Aetrix verify that BZX84C8V2Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C8V2Q-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 BZX84C8V2Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C8V2Q-7-F?
All BZX84C8V2Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C8V2Q-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 BZX84C8V2Q-7-F part is unused and in its original packaging.
Return procedure for BZX84C8V2Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C8V2Q-7-F Tags
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Diodes Incorporated
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MMSZ5231B-7-F
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