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Nexperia USA Inc. BZT52H-A10-QX
- Part No.:
- BZT52H-A10-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A10-QX.pdf
- Description:
- DIODE ZENER 10V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,058
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Product details
Overview
BZT52H-A10-QX from Nexperia is a precision Zener voltage regulator diode in SOD123F package, rated for 10 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-A10-QX datasheet, BZT52H-A10-QX pinout, BZT52H-A10-QX application, or BZT52H-A10-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 under temperature cycling are critical.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable DC reference voltage across its terminals under varying load and temperature conditions. Its differential resistance of 70 Ω at 5 mA ensures low dynamic impedance for effective noise suppression and regulation fidelity.
The device exhibits a positive temperature coefficient of +4.5 mV/K at IZ = 5 mA, enabling predictable drift behavior in ambient ranges from −65 °C to +150 °C, and supports non-repetitive surge currents up to 3.0 A (100 μs pulse) for transient overvoltage resilience.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 10.0 V at IZ = 5 mA - precise reference point for voltage regulation and clamping |
| Tolerance | ±1 % - enables high-accuracy biasing and feedback networks without trimming |
| Differential Resistance | 70 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load changes |
| Total Power Dissipation | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - defines continuous thermal operating envelope |
| Forward Voltage | 0.9 V max at IF = 10 mA - limits conduction loss when used in series or bidirectional configurations |
| Reverse Current | 10 μA max at VR = 7.6 V - guarantees low leakage in standby and low-power monitoring circuits |
| Temperature Coefficient | +4.5 mV/K at IZ = 5 mA - quantifies predictable voltage drift over temperature for compensation design |
Pinout & Package
SOD123F surface-mount plastic package: 2-terminal, flat lead, small outline (3.6 × 1.6 mm footprint), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation during PCB layout |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| ±1 % voltage tolerance | Reduces need for external trimming in precision reference designs such as ADC biasing and op-amp feedback |
| 830 mW power rating | Supports higher current regulation (up to ~83 mA at 10 V) without heatsinking in compact layouts |
| SOD123F package | Enables automated placement and reflow soldering while minimizing board area vs. DO-35 or SOD-123 |
| Low thermal resistance | Rth(j-sp) = 70 K/W to cathode solder point - improves thermal coupling to PCB copper for sustained power handling |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC inputs monitoring battery voltage and cabin temperature sensors. IC Role / Device Role / Timing Role: Zener diode provides stable 10 V reference to analog front-end circuitry, independent of supply rail fluctuations. Use Value: ±1 % tolerance and +4.5 mV/K TC ensure measurement accuracy remains within 0.5 % over −40 °C to +125 °C operating range. |
Use Scenario: Clamping and level-shifting analog outputs from 4–20 mA transmitters before feeding into isolation amplifiers. IC Role / Device Role / Timing Role: Acts as precision shunt limiter to protect downstream ICs from overvoltage transients and rail excursions. Use Value: 70 Ω differential resistance and 3.0 A non-repetitive surge capability suppress fast spikes without latch-up or degradation. |
| Automotive Infotainment Power Sequencing | Medical Diagnostic Equipment Reference |
Use Scenario: Providing clean, stable bias to voltage supervisors and reset generators during multi-rail power-up sequencing. IC Role / Device Role / Timing Role: Functions as low-noise, low-drift voltage source for POR (Power-On Reset) circuit timing thresholds. Use Value: Low 10 μA reverse leakage at 7.6 V prevents false triggering and ensures reliable reset assertion across temperature. |
Use Scenario: Establishing calibrated reference for analog-to-digital conversion in portable ECG and pulse oximeter front-ends. IC Role / Device Role / Timing Role: Delivers metrology-grade 10 V reference traceable to system-level calibration standards. Use Value: AEC-Q101 qualification and 150 °C max junction temperature support extended field-life requirements and sterilization cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-B10-Q | ±2 % tolerance, identical VZ, package, and power rating | Lower cost for non-critical biasing where ±1 % is not required | Select when tighter tolerance is unnecessary and BOM cost optimization is prioritized |
| MMSZ5240B-TP | 10 V ±5 %, SOD-123 package, 500 mW Ptot, no AEC-Q101 qualification | Limited to commercial-grade consumer electronics due to lower power and unqualified reliability | Use only in non-automotive, low-power applications where qualification and thermal margin are not mandatory |
Compared with BZT52H-A10-QX, the BZT52H-B10-Q offers relaxed tolerance at equal form factor and automotive qualification, while MMSZ5240B-TP trades qualification and power headroom for cost reduction in non-automotive contexts.
Availability
BZT52H-A10-QX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, infotainment power sequencing, and medical diagnostic equipment requiring stable component supply with full AEC-Q101 traceability.
Supply support for BZT52H-A10-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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with strong focus on automotive, industrial, and mobile markets.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for precision voltage reference and overvoltage protection in harsh-environment automotive electronics.
FAQ
What is the maximum continuous Zener current for BZT52H-A10-QX at 25 °C ambient?
At Tamb = 25 °C with proper PCB thermal relief (1 cm² cathode pad), the maximum continuous Zener current is 83 mA, calculated from Ptot = 830 mW ÷ VZ = 10 V. Derating is required above 25 °C per the Rth(j-a) = 150 K/W thermal resistance specification.
Is BZT52H-A10-QX suitable for bidirectional ESD protection?
No - BZT52H-A10-QX is a unidirectional Zener diode optimized for reverse-bias regulation. It lacks symmetric breakdown characteristics and specified ESD ratings (e.g., IEC 61000-4-2). For bidirectional ESD clamping, use purpose-built TVS diodes like PESD5V0S1BA.
How does the +4.5 mV/K temperature coefficient affect regulation accuracy over temperature?
Over a −40 °C to +125 °C range (165 K ΔT), the voltage shift is +4.5 mV/K × 165 K = +743 mV, resulting in a 10.0 V ±1 % unit drifting from ~9.9 V to ~10.74 V. This must be accounted for in high-accuracy systems via compensation or calibration.
Can BZT52H-A10-QX replace older BZT52C10 in existing designs?
Yes - BZT52H-A10-QX shares identical SOD123F package, pinout, and 10 V nominal voltage, but offers ±1 % tolerance (vs. ±5 % for BZT52C10), AEC-Q101 qualification, and improved thermal performance (830 mW vs. 500 mW), enabling direct drop-in upgrades in automotive and industrial applications.
BZT52H-A10-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):
- 10 V
- Tolerance:
- ±1%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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-A10-QX FAQ
1.How can I place an order for BZT52H-A10-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A10-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-A10-QX reliable?
The price and inventory of BZT52H-A10-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-A10-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-A10-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A10-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A10-QX?
BZT52H-A10-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A10-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-A10-QX?
For technical support, including BZT52H-A10-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A10-QX requirements.
6.How does Aetrix verify that BZT52H-A10-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-A10-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-A10-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-A10-QX?
All BZT52H-A10-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A10-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-A10-QX part is unused and in its original packaging.
Return procedure for BZT52H-A10-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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