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Diodes Incorporated BZT52C8V2Q-7-F
- Part No.:
- BZT52C8V2Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C8V2Q-7-F.pdf
- Description:
- DIODE ZENER 8.2V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BZT52C8V2Q-7-F from Diodes Incorporated is an AEC-Q101 qualified surface-mount Zener diode with nominal 8.2 V zener voltage, 5 mA test current, 15 Ω maximum zener impedance at 5 mA, 0.7 µA maximum reverse leakage at 6.2 V, and ±5% voltage tolerance. It delivers precise voltage regulation in automotive power supply monitoring and ECU reference circuits.
For engineers reviewing the BZT52C8V2Q-7-F datasheet, BZT52C8V2Q-7-F pinout, BZT52C8V2Q-7-F application, or BZT52C8V2Q-7-F equivalent, this part supports stable 8.2 V clamping in low-power bias networks, overvoltage protection for microcontroller I/O, and precision reference generation where thermal stability and automotive qualification are required.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 8.2 V reference across its cathode–anode terminals under controlled current conditions. Its 15 Ω dynamic impedance at 5 mA ensures minimal voltage deviation during load transients, while the −3.5 mV/°C temperature coefficient enables predictable drift compensation in ambient-varying environments.
The device uses planar die construction in an SOD123 package with matte tin–plated alloy 42 leads, supporting automated reflow assembly and meeting J-STD-020 Level 1 moisture sensitivity. Its 370 mW power dissipation at 25°C and 500 mW at 75°C allow operation in compact PCB layouts without forced cooling.
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 clamping threshold for overvoltage protection and reference accuracy |
| Zener Impedance (ZZT) | 15 Ω max at 5 mA - limits output voltage variation under changing load current |
| Reverse Leakage (IR) | 0.7 µA max at 6.2 V - ensures minimal standby current in high-impedance bias networks |
| Power Dissipation (PD) | 370 mW at TA = 25°C - sets maximum continuous power handling on standard FR-4 PCB |
| Temperature Coefficient | −3.5 mV/°C - quantifies voltage drift per degree Celsius for thermal design margining |
| Package | SOD123 - 2-pin surface-mount outline with 2.65 mm body width and 3.65 mm length, optimized for pick-and-place |
Pinout & Package
Package: SOD123 - molded plastic case with cathode band marking; dimensions: 2.65 mm × 1.55 mm × 1.05 mm (L × W × H); weight ≈ 0.010 g; UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lower-potential node; establishes reference point for reverse-biased operation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to voltage source or signal line requiring clamping; carries reverse current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Planar die construction | Enables tight voltage tolerance (±5%) and repeatable zener characteristics across production lots |
| Lead-free & halogen-free | Fully RoHS-compliant with <900 ppm Br/Cl and <1000 ppm Sb - meets automotive environmental standards |
| Low thermal resistance (RθJL = 150 °C/W) | Supports reliable operation up to +150°C junction temperature in under-hood environments |
Applications
| Automotive ECU Power Monitoring | Microcontroller I/O Protection |
|---|---|
Use Scenario: Monitoring 12 V battery rail in engine control unit to detect undervoltage or overvoltage faults. IC Role / Device Role / Timing Role: Zener diode provides fixed 8.2 V reference for comparator input against which battery voltage is scaled. Use Value: Enables accurate fault detection within ±0.5 V due to tight 7.7–8.7 V tolerance and low 15 Ω impedance. |
Use Scenario: Protecting 3.3 V GPIO pins of automotive-grade MCU from transient spikes on shared signal lines. IC Role / Device Role / Timing Role: Clamps induced surges above 8.2 V to prevent latch-up or oxide damage in CMOS inputs. Use Value: Limits peak voltage to safe level with sub-microamp leakage, preserving signal integrity during normal operation. |
| Industrial Sensor Reference | Low-Power Analog Bias Network |
Use Scenario: Generating stable reference for analog front-end of temperature sensor in HVAC control module. IC Role / Device Role / Timing Role: Supplies precision 8.2 V bias to op-amp gain stage and ADC reference divider network. Use Value: Maintains reference stability over −40°C to +125°C with predictable −3.5 mV/°C drift for calibration compensation. |
Use Scenario: Setting bias point for discrete transistor amplifier in battery-powered wireless sensor node. IC Role / Device Role / Timing Role: Provides regulated 8.2 V supply to base bias resistor network with negligible quiescent current draw. Use Value: Achieves <1 µA total standby current via 0.7 µA max reverse leakage, extending battery life by >20% vs. higher-leakage alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5231BS-7-F | Same 8.2 V nominal, but ±5% tolerance, 20 Ω ZZT, 1 µA IR at 6.2 V, SOT-23 package | Higher thermal resistance (RθJA = 350 °C/W) limits power handling in dense layouts | Select when board space allows larger SOT-23 footprint and higher leakage is acceptable |
| BZX84-C8V2 | 8.2 V nominal, ±5%, 20 Ω ZZT, 0.5 µA IR at 6.2 V, SOT-23 package, no AEC-Q101 qualification | Lacks automotive qualification and has higher impedance - unsuitable for safety-critical ECU use | Acceptable only for commercial-grade consumer products with non-automotive reliability requirements |
Compared with MMBZ5231BS-7-F and BZX84-C8V2, BZT52C8V2Q-7-F offers superior thermal performance (RθJL = 150 °C/W), guaranteed AEC-Q101 compliance, and lower zener impedance - making it the preferred choice for automotive power monitoring and reference applications demanding long-term reliability.
Availability
BZT52C8V2Q-7-F is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor reference circuits, and low-power analog bias networks requiring stable component supply and full traceability.
Supply support for BZT52C8V2Q-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 BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for precision voltage regulation and transient suppression in harsh-environment electronic control modules.
FAQ
What is the maximum reverse voltage (VR) that BZT52C8V2Q-7-F can withstand before breakdown?
The device is rated for 8.2 V nominal zener voltage at 5 mA test current, with a guaranteed breakdown range of 7.7–8.7 V. It does not specify a separate "maximum reverse voltage" rating; operation beyond 8.7 V at rated current will exceed specified limits and may cause thermal runaway if power dissipation exceeds 370 mW at 25°C ambient.
Is BZT52C8V2Q-7-F compatible with lead-free reflow soldering processes?
Yes - it features matte tin finish over alloy 42 leadframe, qualified to JEDEC J-STD-020 Level 1 moisture sensitivity, and fully compliant with lead-free reflow profiles up to 260°C peak temperature. The SOD123 package is designed for compatibility with standard automated assembly equipment.
How does the −3.5 mV/°C temperature coefficient affect circuit performance?
This coefficient means the zener voltage decreases by 3.5 mV for every 1°C rise in junction temperature. In a 125°C operating environment, the voltage shift is approximately −350 mV from 25°C baseline, resulting in ~7.85 V output. Designers must account for this drift in precision references using calibration or compensation techniques.
Can BZT52C8V2Q-7-F replace a 9.1 V Zener in an existing design?
No - it is not a drop-in replacement. The 8.2 V nominal rating differs from 9.1 V by over 10%, and its 7.7–8.7 V tolerance range does not overlap with typical 9.1 V Zener specifications (8.5–9.6 V). Substituting would shift clamping thresholds, potentially causing incorrect fault detection or reference errors.
BZT52C8V2Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±6.1%
- Power - Max:
- 370 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:
- SOD-123
BZT52C8V2Q-7-F FAQ
1.How can I place an order for BZT52C8V2Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C8V2Q-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 BZT52C8V2Q-7-F reliable?
The price and inventory of BZT52C8V2Q-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 BZT52C8V2Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C8V2Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C8V2Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C8V2Q-7-F?
BZT52C8V2Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C8V2Q-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 BZT52C8V2Q-7-F?
For technical support, including BZT52C8V2Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C8V2Q-7-F requirements.
6.How does Aetrix verify that BZT52C8V2Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C8V2Q-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 BZT52C8V2Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C8V2Q-7-F?
All BZT52C8V2Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C8V2Q-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 BZT52C8V2Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C8V2Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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