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Nexperia USA Inc. BZT52H-B3V0-QX
- Part No.:
- BZT52H-B3V0-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B3V0-QX.pdf
- Description:
- DIODE ZENER 3V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,988
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Product details
Overview
BZT52H-B3V0-QX from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, rated for 3.0 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation and reference applications.
For engineers reviewing the BZT52H-B3V0-QX datasheet, BZT52H-B3V0-QX pinout, BZT52H-B3V0-QX application, or BZT52H-B3V0-QX equivalent, this page delivers verified Zener parameters, thermal resistance values, reverse current limits at 1 mA/5 mA, temperature coefficient behavior, and automotive-grade reliability context - all critical for precision biasing, overvoltage clamping, and low-power reference design.
Technical Context
This Zener diode operates in reverse breakdown mode with a tightly controlled 3.0 V (±2 %) nominal Zener voltage at IZ = 5 mA, exhibiting a typical differential resistance of 95 Ω and a temperature coefficient of –3.5 to 0.0 mV/K across its operating current range. Its low forward voltage (≤0.9 V at 10 mA) supports bidirectional protection configurations.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 830 mW total power dissipation at Tamb ≤ 25 °C and maintains junction temperatures up to 150 °C, supported by Rth(j-a) = 330 K/W (free air) and Rth(j-sp) = 70 K/W (cathode solder point).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.0 V ±2 % at IZ = 5 mA - ensures stable reference within 60 mV tolerance for precision analog circuits |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - enables continuous regulation in compact automotive PCB layouts without forced cooling |
| Differential Resistance rdif | 95 Ω max at IZ = 5 mA - minimizes output impedance drift under load variation in feedback networks |
| Reverse Current IR | 10 μA max at VR = 1 V - guarantees low leakage in high-impedance bias chains and sensor interfaces |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - allows use as bidirectional clamp or ESD protection element in low-voltage signal paths |
| Thermal Resistance Rth(j-sp) | 70 K/W - enables effective heat transfer from junction to cathode solder pad, critical for sustained operation near thermal limits |
| Junction Temperature Tj | –65 °C to +150 °C - supports deployment in under-hood automotive environments and industrial control enclosures |
Pinout & Package
SOD123F plastic surface-mounted package: 2-terminal, flat lead, small outline (3.6 mm × 2.7 mm × 1.2 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - essential for correct polarity in voltage reference and clamping circuits |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration establishes stable Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test standard - enables use in engine control units, body modules, and ADAS sensors without additional qualification effort |
| ±2 % Zener voltage tolerance | Tighter than standard ±5 % variants - reduces calibration overhead in precision voltage references and feedback dividers |
| 830 mW power rating | Higher than legacy SOD-123 devices - supports higher current regulation (up to ~250 mA pulsed) while maintaining thermal stability on standard FR4 |
| Low thermal resistance (70 K/W) | Optimized cathode pad thermal path - improves long-term reliability in thermally constrained automotive PCBs |
| Wide operating temperature range | –65 °C to +150 °C - ensures functionality across cold-cranking, hot-soak, and extended ambient conditions in vehicle systems |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 3.0 V reference for microcontroller ADC inputs monitoring door lock status, window position, and interior lighting feedback. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precise bias point for analog front-end circuitry. Use Value: ±2 % tolerance and low temperature coefficient ensure consistent ADC code mapping across –40 °C to +125 °C operating range. |
Use Scenario: Regulating supply to low-power analog sensors (e.g., pressure transducers, RTD interfaces) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining constant excitation voltage independent of input rail fluctuations. Use Value: 95 Ω differential resistance minimizes output voltage shift under varying sensor load currents (0–2 mA). |
| USB-C Port Overvoltage Protection | Medical Wearable Battery Monitoring |
Use Scenario: Clamping transient surges on VBUS line during hot-plug events in portable docking stations. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting voltage to 3.3 V logic rails downstream of USB-C PD negotiation ICs. Use Value: 40 W non-repetitive peak power rating (100 μs pulse) absorbs ESD and inductive spikes without degradation. |
Use Scenario: Generating accurate threshold voltage for battery fuel gauge comparators in implantable and diagnostic wearables. IC Role / Device Role / Timing Role: Low-leakage (≤10 μA at 1 V) Zener reference enabling ultra-low-quiescent-current monitoring circuits. Use Value: Sub-μA reverse current preserves battery life over multi-year device operation while maintaining 3.0 V accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-A3V0-Q | ±1 % tolerance, 3.0 V nominal, same SOD123F package and thermal specs | Higher precision required for metrology-grade references or closed-loop feedback where <±15 mV error is mandatory | Select when tighter initial accuracy outweighs cost sensitivity; identical layout and thermal behavior |
| BZT52H-C3V0-Q | ±5 % tolerance, 3.0 V nominal, same package and power rating | Cost-sensitive consumer electronics or non-critical biasing where >±150 mV variation is acceptable | Choose for high-volume, non-automotive designs where AEC-Q101 compliance is not required |
Compared with BZT52H-B3V0-QX, the ±1 % A-series offers superior initial accuracy for calibration-critical systems, while the ±5 % C-series trades tolerance for lower unit cost in non-automotive applications - all share identical thermal performance, footprint, and surge capability.
Availability
BZT52H-B3V0-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C protection circuits, and medical wearable battery monitoring requiring stable component supply with AEC-Q101 assurance.
Supply support for BZT52H-B3V0-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-performance, reliable discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and reference functions in harsh automotive and industrial environments.
FAQ
What is the maximum reverse current at 1 V for BZT52H-B3V0-QX?
The maximum reverse current IR is 10 μA at VR = 1 V and Tj = 25 °C, measured per Table 8. This low leakage supports high-impedance bias networks and extends battery life in always-on monitoring circuits without compromising reference stability.
Can BZT52H-B3V0-QX be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients and manufacturing spread, causing current imbalance and thermal runaway when paralleled. For higher power, use a single higher-rated device or implement active regulation instead of passive parallel stacking.
Is the SOD123F package compatible with standard reflow profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method for SOD123F. The package supports JEDEC J-STD-020-compliant profiles, with peak temperature up to 260 °C and time above liquidus of 60–90 seconds, provided the footprint matches Figure 12 dimensions.
How does temperature affect the 3.0 V Zener voltage?
At IZ = 5 mA, the temperature coefficient ranges from –3.5 mV/K to 0.0 mV/K depending on operating point and batch. This means VZ may decrease by up to 3.5 mV per Kelvin rise - critical for wide-temperature applications where drift must stay within system error budgets.
BZT52H-B3V0-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:
- ±2%
- 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-B3V0-QX FAQ
1.How can I place an order for BZT52H-B3V0-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B3V0-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-B3V0-QX reliable?
The price and inventory of BZT52H-B3V0-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-B3V0-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-B3V0-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B3V0-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B3V0-QX?
BZT52H-B3V0-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B3V0-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-B3V0-QX?
For technical support, including BZT52H-B3V0-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B3V0-QX requirements.
6.How does Aetrix verify that BZT52H-B3V0-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-B3V0-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-B3V0-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-B3V0-QX?
All BZT52H-B3V0-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B3V0-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-B3V0-QX part is unused and in its original packaging.
Return procedure for BZT52H-B3V0-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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