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Nexperia USA Inc. BZT52H-A8V2-QX
- Part No.:
- BZT52H-A8V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A8V2-QX.pdf
- Description:
- DIODE ZENER 8.2V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
BZT52H-A8V2-QX from Nexperia is a precision Zener voltage regulator diode in SOD123F package, rated for 8.2 V nominal breakdown voltage at 5 mA, ±1 % tolerance, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZT52H-A8V2-QX datasheet, BZT52H-A8V2-QX pinout, BZT52H-A8V2-QX application, or BZT52H-A8V2-QX equivalent, this part delivers tight-tolerance regulation in space-constrained automotive ECUs, sensor signal conditioning, and power rail clamping where thermal stability and long-term reliability are critical.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its differential resistance of 80 Ω at 5 mA and temperature coefficient of +3.2 mV/K (typical) enable predictable regulation drift in automotive ambient ranges.
Designed for surface-mount reflow assembly on FR4 PCBs with single-sided copper, it leverages a 1 cm² cathode pad for thermal management and achieves 70 K/W junction-to-solder-point thermal resistance-critical for sustained 830 mW operation in engine bay or ADAS modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 8.2 V at IZ = 5 mA - defines precise regulation point for reference or clamp function |
| Tolerance | ±1 % - ensures voltage accuracy within ±82 mV for high-precision feedback loops |
| Differential Resistance (rdif) | 80 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - sets maximum continuous power handling on standard PCB layout |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction loss during forward-bias fault conditions |
| Reverse Current (IR) | 0.7 μA max at VR = 6.5 V - ensures low leakage in standby or high-impedance sensing nodes |
| Junction Temperature (Tj) | 150 °C max - supports operation in under-hood automotive environments |
Pinout & Package
SOD123F surface-mount plastic package: 2-pin, flat lead, small outline (3.6 mm × 1.7 mm × 1.0 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias current flows from cathode to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per discrete semiconductor stress test standard |
| ±1 % voltage tolerance | Enables direct replacement of higher-cost laser-trimmed references in cost-sensitive ECU voltage monitors |
| 830 mW power rating | Supports robust transient suppression in 12 V automotive systems without external heatsinking on standard FR4 |
| Low 80 Ω dynamic impedance | Minimizes output voltage deviation under load step changes in sensor biasing or ADC reference circuits |
| Thermal resistance (Rth(j-sp)) | 70 K/W to solder point - enables predictable derating curves for board-level thermal design in compact modules |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 5 V reference for microcontroller ADC inputs in door module electronics exposed to 12 V battery transients. IC Role / Device Role / Timing Role: Zener diode provides stable shunt reference voltage independent of supply ripple or load variation. Use Value: ±1 % tolerance and 80 Ω rdif ensure ADC measurement accuracy remains within ±0.5 LSB across temperature and aging. |
Use Scenario: Clamping analog output of a 4–20 mA transmitter to protect downstream op-amp inputs from overvoltage faults. IC Role / Device Role / Timing Role: Acts as fast-acting voltage limiter during field wiring errors or surge events. Use Value: 830 mW Ptot and 4.0 A non-repetitive peak current (IZSM) absorb 100 μs surges without degradation. |
| Automotive Infotainment Power Sequencing | Medical Grade Portable Monitor Bias Supply |
Use Scenario: Providing clean 3.3 V bias for display backlight driver ICs during cold-cranking when battery dips to 6 V. IC Role / Device Role / Timing Role: Shunt regulator maintains stable voltage while series pass element handles bulk current. Use Value: +3.2 mV/K temperature coefficient allows predictable compensation in firmware-based voltage calibration routines. |
Use Scenario: Generating isolated 8.2 V reference for precision current source driving optical sensors in battery-powered patient monitors. IC Role / Device Role / Timing Role: Low-leakage (0.7 μA) Zener ensures minimal quiescent drain on Li-ion cells during sleep mode. Use Value: AEC-Q101 qualification confirms long-term parametric stability required for Class II medical device certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C8V2-Q | ±5 % tolerance, 150 Ω rdif, same SOD123F package | Lower accuracy and higher impedance limit use in precision references but acceptable for general-purpose clamping | Select when cost is prioritized over regulation stability and thermal drift is less critical |
| MMSZ5231B-TP | ±5 % tolerance, 300 Ω rdif, SOD-123 package (not SOD123F), 500 mW Ptot | Higher impedance and lower power rating reduce surge handling and load regulation capability | Choose only for legacy designs where footprint compatibility exists and 830 mW rating is not required |
Compared with BZT52C8V2-Q and MMSZ5231B-TP, the BZT52H-A8V2-QX offers superior voltage accuracy, lower dynamic impedance, and higher power dissipation-making it the preferred choice for automotive and industrial applications demanding long-term stability and transient resilience.
Availability
BZT52H-A8V2-QX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, infotainment power sequencing, and medical portable monitor bias supplies requiring stable component supply with AEC-Q101 compliance and traceable sourcing.
Supply support for BZT52H-A8V2-QX 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET devices, with leadership in automotive-qualified components and efficient manufacturing.
The BZT52H-Q series belongs to Nexperia's automotive-grade Zener diode product line, engineered specifically for voltage reference, overvoltage protection, and biasing functions in harsh-environment electronic control units.
FAQ
What is the maximum reverse current at 6.5 V for BZT52H-A8V2-QX?
The maximum reverse current (IR) is 0.7 μA at VR = 6.5 V and Tj = 25 °C, measured under specified test conditions. This low leakage ensures minimal error in high-impedance reference circuits and preserves battery life in always-on monitoring applications.
Can BZT52H-A8V2-QX be used in place of a 5.1 V Zener diode?
No-BZT52H-A8V2-QX has a nominal Zener voltage of 8.2 V and is not interchangeable with 5.1 V parts. Substituting requires verifying circuit voltage margins, power dissipation, and regulation stability; using an incorrect VZ risks overvoltage damage or failure to regulate.
Is the SOD123F package compatible with standard SOD-123 reflow footprints?
Yes-the SOD123F package shares identical external dimensions and pad layout with standard SOD-123, enabling drop-in replacement on existing PCBs. Nexperia's recommended reflow footprint (2.9 mm × 1.6 mm solder land) matches industry-standard SOD-123 land patterns.
How does the +3.2 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
Over that range, the Zener voltage shifts approximately +520 mV (3.2 mV/K × 165 K), resulting in a final VZ of ~8.72 V at +125 °C. System-level calibration or compensation algorithms must account for this drift in precision applications like ADC references.
BZT52H-A8V2-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±1.1%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52H-A8V2-QX FAQ
1.How can I place an order for BZT52H-A8V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A8V2-QX 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 BZT52H-A8V2-QX reliable?
The price and inventory of BZT52H-A8V2-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-A8V2-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-A8V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A8V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A8V2-QX?
BZT52H-A8V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A8V2-QX 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 BZT52H-A8V2-QX?
For technical support, including BZT52H-A8V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A8V2-QX requirements.
6.How does Aetrix verify that BZT52H-A8V2-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-A8V2-QX 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 BZT52H-A8V2-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-A8V2-QX?
All BZT52H-A8V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A8V2-QX, 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 BZT52H-A8V2-QX part is unused and in its original packaging.
Return procedure for BZT52H-A8V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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