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Nexperia USA Inc. BZT5250H-B11-QX
- Part No.:
- BZT5250H-B11-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B11-QX.pdf
- Description:
- DIODE ZENER 11V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,523
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Product details
Overview
BZT5250H-B11-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 11 V nominal (±2 % tolerance), with 50 µA test current, 830 mW total power dissipation, and AEC-Q101 qualification for automotive load-dump protection and sensor biasing.
For engineers reviewing the BZT5250H-B11-QX datasheet, BZT5250H-B11-QX pinout, BZT5250H-B11-QX application, or BZT5250H-B11-QX equivalent, this device serves as a stable, low-leakage voltage reference in battery-powered ECUs, CAN transceiver bias rails, and low-power analog front-ends where thermal efficiency and automotive-grade reliability are critical.
Technical Context
This Zener operates in reverse breakdown mode with a specified 11.0 V nominal Zener voltage at IZ = 50 µA, exhibiting a differential resistance of ≤150 Ω at IZ = 1 mA and a temperature coefficient of +5.4 mV/K - enabling predictable drift compensation in ambient-temperature-varying circuits.
Its intentional minor leakage rise (per AN90031) reduces switching noise and improves transient response in clamping applications, while its SOD123F footprint supports high-density PCB layouts with validated thermal resistance of 150 K/W (junction-to-solder point) under standard FR4 mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 11.0 V ±2 % at IZ = 50 µA - ensures tight regulation in low-bias sensor references |
| Differential Resistance rdiff | ≤150 Ω at IZ = 1 mA - maintains stable output under small load variations |
| Temperature Coefficient SZ | +5.4 mV/K - enables predictable voltage drift compensation across -40 °C to +125 °C |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - supports sustained operation in compact automotive modules |
| Forward Voltage VF | 0.9 V at IF = 10 mA - minimizes conduction loss during forward-biased fault conditions |
| Junction Temperature Tj | 150 °C maximum - allows reliable operation in under-hood environments |
| AEC-Q101 Qualified | Yes - certified for automotive discrete semiconductor stress testing per AEC standard |
Pinout & Package
SOD123F plastic surface-mount package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead, 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 for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables use in ultra-low-power wake-up circuits and energy-harvesting nodes |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching noise and improves EMI performance in clamping |
| Automotive qualification | AEC-Q101 compliant - validated for vibration, temperature cycling, and humidity robustness in vehicle ECUs |
| Thermal performance | Rth(j-sp) = 150 K/W - enables efficient heat transfer to PCB copper via cathode pad |
| Small-form-factor packaging | SOD123F footprint - fits high-density layouts without compromising thermal or electrical integrity |
Applications
| Automotive Body Control Module (BCM) | CAN FD Transceiver Bias Rail |
|---|---|
Use Scenario: Regulating 11 V supply for microcontroller I/O protection circuitry in door module ECUs. IC Role / Device Role / Timing Role: Zener clamp providing overvoltage protection and stable reference for level-shifting logic. Use Value: Maintains <11.2 V clamp during load-dump transients (ISO 7637-2 Pulse 5a), preventing damage to downstream 12 V-tolerant GPIOs. |
Use Scenario: Supplying precise 11 V bias to CAN FD transceiver VIO pin in gateway units. IC Role / Device Role / Timing Role: Low-drift voltage reference ensuring consistent common-mode range and signal integrity at 5 Mbps. Use Value: +5.4 mV/K temperature coefficient aligns with transceiver's internal reference drift, minimizing bus offset error across -40 °C to +125 °C. |
| Portable Diagnostic Tool Sensor Interface | Industrial IoT Node Reference Divider |
Use Scenario: Providing stable 11 V reference for thermistor-based cabin temperature sensing in handheld OBD-II scanners. IC Role / Device Role / Timing Role: Low-current Zener reference enabling accurate ADC input scaling with minimal quiescent draw. Use Value: 50 µA test current allows direct connection to coin-cell-powered MCU ADC reference inputs without burdening battery life. |
Use Scenario: Generating precision 11 V node in battery-operated wireless pressure sensor node using resistive divider feedback. IC Role / Device Role / Timing Role: Stable shunt reference anchoring feedback loop of low-quiescent LDO regulator. Use Value: ≤150 Ω rdiff ensures <0.15 % output variation under 100 µA load shifts, preserving measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C11 | ±5 % tolerance, SOT23 package, 350 mW Ptot, no AEC-Q101 qualification | Limited to non-automotive consumer or industrial use; higher voltage tolerance reduces regulation precision | Select only for cost-sensitive, non-automotive designs where ±5 % VZ and lower power are acceptable |
| MMSZ5240B | ±5 % tolerance, SOD123 package, 500 mW Ptot, no intentional leakage optimization or AEC-Q101 | Not qualified for automotive; lacks AN90031 noise-reduction design for fast-switching clamps | Prefer for general-purpose lab bench supplies or non-critical biasing where automotive reliability is not required |
Compared with BZT5250H-B11-QX, BZX84-C11 offers lower cost but sacrifices automotive qualification and regulation precision, while MMSZ5240B provides similar form factor but lacks both AEC-Q101 validation and the optimized leakage/noise behavior critical for CAN and ECU applications.
Availability
BZT5250H-B11-QX is available at Aetrix Electronics and suitable for automotive body control modules, CAN FD transceiver biasing, and portable diagnostic tool sensor interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT5250H-B11-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 technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for low-current, low-noise voltage regulation in automotive electronics where precision, thermal resilience, and EMI robustness are mandatory.
FAQ
What is the exact Zener voltage tolerance and test condition for BZT5250H-B11-QX?
The BZT5250H-B11-QX has a nominal Zener voltage of 11.0 V with ±2 % tolerance, measured at a test current of 50 µA and junction temperature of 25 °C. This tight tolerance is maintained across the full operating temperature range (-55 °C to +150 °C) and is verified per AEC-Q101 stress testing protocols.
How does the "intentional minor rise of leakage current" improve performance?
This design feature, documented in AN90031, slightly increases reverse leakage near breakdown to reduce minority-carrier storage time, thereby minimizing switching noise and improving transient response during fast overvoltage events - especially beneficial in CAN bus protection and ECU power-rail clamping.
Can BZT5250H-B11-QX be used in place of standard 11 V Zeners like BZX84-C11?
No - while electrically similar, BZT5250H-B11-QX is AEC-Q101 qualified, rated for 830 mW, and features optimized leakage/noise behavior per AN90031. BZX84-C11 lacks automotive qualification, has ±5 % tolerance, and only 350 mW rating, making it unsuitable for automotive or high-reliability applications.
What is the thermal resistance from junction to solder point, and how is it achieved?
Rth(j-sp) is 150 K/W, measured with the cathode pad soldered to a 1 cm² tin-plated copper area on FR4 PCB. This value is achieved through the SOD123F package's exposed cathode metallization and optimized thermal path design, enabling effective heat transfer without heatsinks in space-constrained automotive modules.
BZT5250H-B11-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):
- 11 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 8.4 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-B11-QX FAQ
1.How can I place an order for BZT5250H-B11-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B11-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-B11-QX reliable?
The price and inventory of BZT5250H-B11-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-B11-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B11-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B11-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B11-QX?
BZT5250H-B11-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B11-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-B11-QX?
For technical support, including BZT5250H-B11-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B11-QX requirements.
6.How does Aetrix verify that BZT5250H-B11-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B11-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-B11-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B11-QX?
All BZT5250H-B11-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B11-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-B11-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B11-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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