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Nexperia USA Inc. BZT52H-A3V0-QX
- Part No.:
- BZT52H-A3V0-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A3V0-QX.pdf
- Description:
- DIODE ZENER 3V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,528
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Product details
Overview
BZT52H-A3V0-QX from Nexperia is a precision Zener voltage regulator diode in SOD123F package, rated for 3.0 V nominal breakdown voltage at 5 mA with ±1 % tolerance, 95 Ω differential resistance, and qualified to AEC-Q101 for automotive power rail stabilization and overvoltage protection.
For engineers reviewing the BZT52H-A3V0-QX datasheet, BZT52H-A3V0-QX pinout, BZT52H-A3V0-QX application, or BZT52H-A3V0-QX equivalent, this part supports low-power voltage reference, ESD-robust clamping, and stable biasing in space-constrained automotive ECUs, sensor interfaces, and industrial control modules where tight voltage regulation and thermal reliability are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable 3.0 V reference across its cathode-anode terminals under controlled current conditions (IZ = 5 mA). Its ±1 % tolerance and low 95 Ω dynamic impedance ensure minimal output variation under load transients.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 830 mW total power dissipation at Tamb ≤ 25 °C and features a negative temperature coefficient of −3.5 mV/K, enabling predictable drift compensation in temperature-sensitive analog circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.0 V at IZ = 5 mA - provides precise DC reference for low-voltage logic supply monitoring and ADC reference buffering |
| Voltage Tolerance | ±1 % - ensures consistent regulation across production batches without post-assembly trimming |
| Differential Resistance | 95 Ω max - limits output voltage shift under ±1 mA current variation, critical for stable feedback loops |
| Forward Voltage | 0.9 V max at IF = 10 mA - enables reliable anode-cathode conduction during reverse-polarity fault detection |
| Total Power Dissipation | 830 mW at Tamb ≤ 25 °C - supports continuous operation in compact automotive modules with limited heatsinking |
| Junction Temperature Range | −65 °C to +150 °C - validated for under-hood environments and industrial ambient extremes |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability including HTOL, TC, and HAST stress testing |
Pinout & Package
The BZT52H-A3V0-QX is housed in a compact SOD123F surface-mount plastic package (3.6 mm × 2.7 mm × 1.2 mm) with flat leads optimized for automated reflow assembly and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output node; marking bar identifies polarity for correct orientation during placement |
| 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 |
|---|---|
| Automotive qualification | AEC-Q101 compliant - meets stress test requirements for vibration, thermal cycling, and humidity exposure in vehicle electronics |
| Precision voltage regulation | ±1 % tolerance at 3.0 V - eliminates need for external trimming in battery monitoring and CAN transceiver bias networks |
| Thermal performance | Rth(j-a) = 330 K/W - enables operation up to 150 °C junction temperature with standard FR4 mounting |
| Low leakage stability | IR ≤ 10 μA at VR = 1 V - ensures minimal standby current draw in always-on automotive subsystems |
| Robust surge handling | IZSM = 6.0 A (tp = 100 μs) - clamps transient overvoltages without degradation in infotainment power rails |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 3.3 V microcontroller supply rail in door module ECUs exposed to load dump transients. IC Role / Device Role / Timing Role: Zener shunt regulator providing overvoltage clamping and reference stabilization for LDO input stage. Use Value: Maintains <3.6 V clamp during 12 V system surges, preventing MCU brownout and ensuring CAN communication continuity. |
Use Scenario: Biasing precision op-amp inputs in 4–20 mA transmitter circuits operating in factory-floor environments. IC Role / Device Role / Timing Role: Low-drift voltage reference establishing fixed common-mode level for current-loop sensing. Use Value: Delivers <±10 mV regulation error over −40 °C to +85 °C, enabling <0.1 % full-scale measurement accuracy. |
| USB-C Power Delivery Interface | Smart Meter Voltage Monitoring |
Use Scenario: Protecting CC line voltage translators from ESD events and VBUS coupling noise in portable chargers. IC Role / Device Role / Timing Role: Fast-response clamping diode absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Limits CC line excursion to <3.6 V during discharge, preserving USB PD controller integrity without signal distortion. |
Use Scenario: Monitoring 3-phase AC mains voltage via resistive divider with embedded MCU ADC. IC Role / Device Role / Timing Role: Precision reference source for ADC reference buffer and overvoltage alarm threshold. Use Value: Enables accurate RMS calculation within ±0.5 % error across 10-year field deployment due to stable 3.0 V reference point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C3V0-Q | ±5 % tolerance, 100 Ω rdif, same SOD123F package | Lower cost for non-critical biasing; unsuitable for precision reference paths | Select when budget constraints outweigh regulation accuracy requirements |
| MMSZ5226B-TP | ±5 % tolerance, 300 mW Ptot, SOD-123 package (slightly larger footprint) | Higher thermal resistance (400 K/W), reduced surge capability (IZSM = 4.5 A) | Choose only if legacy design reuse mandates identical pin compatibility with older MMSZ series |
Compared with BZT52H-A3V0-QX, the BZT52C3V0-Q trades ±1 % accuracy for broader tolerance and higher leakage, while MMSZ5226B-TP lacks AEC-Q101 qualification and delivers inferior thermal performance-making the original part optimal for new automotive and high-reliability industrial designs requiring guaranteed 3.0 V precision.
Availability
BZT52H-A3V0-QX is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor transmitters, USB-C interface protection, and smart meter voltage monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for BZT52H-A3V0-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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZT52H-Q series targets automotive and industrial voltage regulation needs, delivering AEC-Q101-compliant Zener diodes with tight tolerances, low impedance, and robust surge handling for next-generation electronic control units.
FAQ
What is the maximum reverse current before breakdown for BZT52H-A3V0-QX?
At VR = 1 V, the reverse current is ≤10 μA; at VR = 2.5 V, it remains ≤1 μA. This ultra-low leakage ensures minimal power loss in always-on automotive subsystems and preserves battery life in remote sensors.
Can BZT52H-A3V0-QX be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients and mismatched breakdown voltages, causing current hogging and thermal runaway. Use a single device within its 830 mW rating or select a higher-power alternative like PZTA44.
Is the SOD123F package compatible with standard reflow profiles?
Yes-Nexperia specifies reflow soldering only, with peak temperature ≤260 °C and time above 217 °C ≤60 seconds. The package outline matches IPC-7351B SOIC-2 footprint standards for seamless integration into automated SMT lines.
How does the −3.5 mV/K temperature coefficient affect circuit performance?
Over −40 °C to +125 °C, the Zener voltage shifts by approximately −0.35 V, resulting in a 3.0 V reference drifting to 2.65 V. This must be compensated in precision references using dual-diode cancellation or temperature-aware calibration algorithms.
BZT52H-A3V0-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):
- 3 V
- Tolerance:
- ±1%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 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-A3V0-QX FAQ
1.How can I place an order for BZT52H-A3V0-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A3V0-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-A3V0-QX reliable?
The price and inventory of BZT52H-A3V0-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-A3V0-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-A3V0-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A3V0-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A3V0-QX?
BZT52H-A3V0-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A3V0-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-A3V0-QX?
For technical support, including BZT52H-A3V0-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A3V0-QX requirements.
6.How does Aetrix verify that BZT52H-A3V0-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-A3V0-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-A3V0-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-A3V0-QX?
All BZT52H-A3V0-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A3V0-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-A3V0-QX part is unused and in its original packaging.
Return procedure for BZT52H-A3V0-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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