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Nexperia USA Inc. BZT5250H-B10-QX
- Part No.:
- BZT5250H-B10-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B10-QX.pdf
- Description:
- DIODE ZENER 10V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,806
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Product details
Overview
BZT5250H-B10-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 10 V nominal Zener voltage at 50 µA test current, with ±2 % tolerance, 830 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation in battery-powered sensor nodes and ECU bias circuits.
For engineers reviewing the BZT5250H-B10-QX datasheet, BZT5250H-B10-QX pinout, BZT5250H-B10-QX application, or BZT5250H-B10-QX equivalent, this page delivers verified Zener voltage, leakage behavior, thermal resistance, cathode/anode terminal mapping, and automotive-grade substitution guidance - all confirmed from Nexperia's Rev. 2 (18 July 2024) product data sheet.
Technical Context
This device operates as a precision shunt voltage regulator, specified at low 50 µA test current to minimize quiescent power draw in always-on automotive subsystems. Its Zener voltage exhibits a +4.5 mV/K temperature coefficient and 150 Ω typical differential resistance at 5 mA, enabling stable reference generation under light-load conditions.
The SOD123F package provides 150 K/W junction-to-solder-point thermal resistance and supports reflow-only assembly. Intentional minor leakage current rise (per AN90031) reduces switching noise in transient-sensitive analog monitoring paths without compromising DC regulation accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10 V nominal at IZ = 50 µA; tight ±2 % tolerance ensures predictable clamping in 12 V automotive rail monitoring. |
| Differential Resistance (rdiff) | 150 Ω max at IZ = 5 mA; low impedance maintains regulation stability across small load variations. |
| Temperature Coefficient (SZ) | +4.5 mV/K; positive drift compensates for ambient temperature effects in engine bay sensor interfaces. |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad; supports sustained operation in compact ECU layouts. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; enables use as low-drop rectifier or polarity protection in auxiliary power paths. |
| Reverse Current (IR) | 0.1 µA max at VR = 7.6 V; ultra-low leakage preserves battery life in sleep-mode vehicle modules. |
| Junction Temperature (Tj) | 150 °C max; AEC-Q101 qualified for continuous operation in under-hood environments. |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat leads, 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; carries reverse-bias current during regulation. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path when Vin exceeds VZ. |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at 50 µA - enables accurate voltage reference in µA-level standby circuits without loading sensitive sources. |
| AEC-Q101 qualification | Stress-tested per automotive discrete semiconductor standard - validated for 15-year service life in engine control, ADAS, and body electronics. |
| Optimized leakage profile | Intentionally elevated IR improves high-frequency noise suppression in CAN/LIN bus bias networks per AN90031. |
| Tight voltage tolerance | ±2 % tolerance (B-series) - eliminates post-assembly trimming in factory-calibrated sensor signal conditioning. |
| Thermal performance | 150 K/W Rth(j-sp) - allows direct thermal coupling to copper pour for reliable 830 mW dissipation in dense PCB layouts. |
Applications
| Automotive ECU Reference Supply | Portable Sensor Biasing |
|---|---|
|
Use Scenario: Providing stable 10 V reference for analog-to-digital conversion in engine coolant temperature sensors within an automotive ECU. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining precise bias point for op-amp front-end amplifiers. Use Value: ±2 % VZ tolerance and +4.5 mV/K temperature coefficient ensure ADC accuracy remains within 0.5 % over −40 °C to +125 °C operating range. |
Use Scenario: Regulating supply to MEMS accelerometer in battery-powered telematics tracker with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Low-quiescent Zener clamp limiting LDO input voltage during cold-cranking transients. Use Value: 0.1 µA max reverse leakage at 7.6 V prevents >1 nA parasitic drain, extending coin-cell battery life beyond 8 years. |
| Infotainment System Power Sequencing | ADAS Camera Module Protection |
|
Use Scenario: Enabling controlled power-up sequencing of display driver ICs by clamping auxiliary 10 V rail during startup ramp. IC Role / Device Role / Timing Role: Voltage limiter defining turn-on threshold for enable logic in multi-rail PMIC subsystems. Use Value: 150 Ω rdiff ensures <10 mV droop under 1 mA load steps, preventing false resets during hot-plug events. |
Use Scenario: Protecting image signal processor inputs from ESD-induced overvoltage in rear-view camera modules exposed to roadside EMI. IC Role / Device Role / Timing Role: Fast-switching Zener clamp absorbing 40 W non-repetitive surges per IEC 61000-4-2 Level 4. Use Value: Optimized leakage profile reduces RF noise coupling into analog video lines, preserving SNR above 65 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B10 | Same 10 V/±2 % rating but SOD323 package (1.7 × 1.3 mm); 375 mW Ptot; no AEC-Q101 qualification. | Limited to consumer-grade portable devices; unsuitable for under-hood automotive deployment. | Select only for space-constrained non-automotive designs where thermal margin is adequate and qualification is not required. |
| MMSZ5240B | 10 V/±5 % tolerance; SOD123 package (not SOD123F); 500 mW Ptot; no intentional leakage optimization. | Higher voltage drift and lower surge capability reduce reliability in noise-sensitive automotive analog chains. | Acceptable for cost-driven industrial controls where ±5 % regulation and basic ESD protection suffice. |
Compared with BZT5250H-B10-QX, BZX384-B10 trades automotive qualification and thermal headroom for smaller footprint, while MMSZ5240B sacrifices precision and noise performance for broader commercial availability - making the BZT5250H-B10-QX optimal for AEC-Q101-compliant, low-noise, 10 V reference designs.
Availability
BZT5250H-B10-QX is available at Aetrix Electronics and suitable for automotive ECUs, battery-powered sensor nodes, infotainment power sequencing, and ADAS camera protection requiring stable component supply with full traceability and long-lifecycle support.
Supply support for BZT5250H-B10-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 essential efficiency-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, and mobile markets.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-current, low-noise voltage regulation in automotive electronics where precision, longevity, and EMI resilience are critical.
FAQ
What is the maximum reverse voltage this Zener can regulate without breakdown?
The BZT5250H-B10-QX has a nominal Zener voltage of 10 V at 50 µA test current, with guaranteed minimum and maximum values of 9.50 V and 10.50 V respectively. It begins regulating in reverse breakdown at voltages ≥9.50 V and maintains stable clamping up to its absolute maximum reverse voltage limit of 10 V (as defined by VR in Table 8), beyond which irreversible damage may occur.
How does the SOD123F package differ thermally from standard SOD123?
The SOD123F variant features an enhanced thermal pad design on the cathode side, achieving 150 K/W junction-to-solder-point thermal resistance versus ~200 K/W for legacy SOD123. This 25 % improvement enables 830 mW power dissipation at 25 °C ambient - 120 mW higher than standard SOD123 - verified per Nexperia's mounting pad specification (1 cm² cathode copper area).
Is this diode suitable for protecting CAN bus lines against transients?
No - the BZT5250H-B10-QX is not designed for CAN bus protection. Its 40 W non-repetitive surge rating applies only to single-event clamping at the Zener node, not line-to-line or line-to-ground TVS operation. For CAN FD compliance, dedicated bidirectional TVS diodes such as PESD5V0S1BA with <1 ns response and IEC 61000-4-2 Level 4 rating are required.
Does the "QX" suffix indicate RoHS or automotive qualification?
The "QX" suffix denotes Nexperia's automotive-grade packaging variant: lead-free (RoHS-compliant) construction, AEC-Q101 qualification, and extended temperature screening (−55 °C to +150 °C). It replaces earlier "Q"-suffix parts with tighter process controls and 100 % wafer-level burn-in, as documented in Rev. 2 (18 July 2024) of the datasheet.
BZT5250H-B10-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT5250H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 7.6 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
BZT5250H-B10-QX FAQ
1.How can I place an order for BZT5250H-B10-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B10-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 BZT5250H-B10-QX reliable?
The price and inventory of BZT5250H-B10-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B10-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B10-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B10-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B10-QX?
BZT5250H-B10-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B10-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 BZT5250H-B10-QX?
For technical support, including BZT5250H-B10-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B10-QX requirements.
6.How does Aetrix verify that BZT5250H-B10-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B10-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 BZT5250H-B10-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B10-QX?
All BZT5250H-B10-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B10-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 BZT5250H-B10-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B10-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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