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Nexperia USA Inc. BZT5250H-C11-QX
- Part No.:
- BZT5250H-C11-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C11-QX.pdf
- Description:
- DIODE ZENER 11V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,906
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Product details
Overview
BZT5250H-C11-Q from Nexperia is a low-current Zener diode in SOD123F package, rated for 11 V nominal Zener voltage (±5 % tolerance), 830 mW total power dissipation at Tamb ≤ 25 °C, and specified at 50 μA test current - optimized for low-bias regulation in portable battery-powered systems and automotive sensor biasing circuits.
For engineers reviewing the BZT5250H-C11-Q datasheet, BZT5250H-C11-Q pinout, BZT5250H-C11-Q application, or BZT5250H-C11-Q equivalent, this page delivers verified electrical characteristics, AEC-Q101 qualification status, thermal resistance data (Rth(j-a) = 330 K/W), and real-world use context for precision low-power voltage reference design.
Technical Context
This Zener diode operates as a two-terminal voltage reference with cathode-anode polarity, leveraging silicon junction breakdown to maintain stable reverse-bias voltage across its 11 V nominal working range. Its differential resistance is ≤150 Ω at IZ = 1 mA and ≤200 Ω at IZ = 5 mA, supporting tight regulation under light-load conditions.
The device features an intentional minor rise in leakage current per AN90031 to reduce switching noise and improve transient response - a design choice validated for automotive-grade signal conditioning and ECU sub-circuit biasing where low EMI and fast settling are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.45 V to 11.55 V at IZ = 50 µA - defines precise regulation window for low-current reference nodes |
| Differential Resistance (rdiff) | ≤150 Ω at IZ = 1 mA - ensures minimal voltage shift under small load variations |
| Reverse Current (IR) | ≤0.05 µA at VR = 8.4 V - enables ultra-low standby power in always-on circuits |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - supports efficient forward conduction during fault or clamp events |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - sets thermal derating baseline for board layout |
| Junction Temperature (Tj) | −55 °C to +150 °C - enables operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - certified for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile, 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; requires thermal pad for 830 mW dissipation |
| 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 specification | Rated at IZ = 50 µA - enables accurate regulation in microamp-level bias networks without loading error |
| Optimized leakage profile | Intentional minor IR increase per AN90031 - reduces high-frequency noise and improves switching stability in feedback paths |
| AEC-Q101 qualification | Qualified for automotive applications - meets stress test requirements for HTGB, HTRB, and mechanical shock |
| Thermal performance | Rth(j-sp) = 150 K/W to solder point - supports reliable heat transfer through cathode pad on standard FR4 |
| Small-form-factor packaging | SOD123F footprint - compatible with high-density PCB layouts and automated reflow assembly |
Applications
| Automotive Cabin Sensor Biasing | Portable Medical Device Reference |
|---|---|
Use Scenario: Providing stable 11 V bias to MEMS pressure sensor ICs in HVAC control modules within vehicle cabins. IC Role / Device Role / Timing Role: Zener voltage reference establishing precise analog front-end operating point. Use Value: ±5 % VZ tolerance and low 50 µA test current ensure sensor accuracy without draining 12 V battery during sleep mode. |
Use Scenario: Generating fixed reference voltage for ADC input scaling in handheld pulse oximeters powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power shunt regulator maintaining reference node integrity during intermittent measurement cycles. Use Value: 0.05 µA IR at 8.4 V enables >5-year shelf life while delivering 11 V stability across temperature (SZ = +5.4 mV/K). |
| Industrial IoT Node Power Management | LED Driver Feedback Clamp |
Use Scenario: Regulating auxiliary supply for LoRaWAN transceiver biasing in remote environmental monitoring nodes. IC Role / Device Role / Timing Role: Shunt reference stabilizing LDO input to prevent brown-out during RF transmit bursts. Use Value: 830 mW Ptot and Rth(j-a) = 330 K/W allow passive thermal management on compact 2-layer PCBs. |
Use Scenario: Clamping feedback voltage in constant-current LED driver ICs to limit maximum output current during overtemperature events. IC Role / Device Role / Timing Role: Fast-responding overvoltage protection element in optocoupler-isolated feedback loop. Use Value: Optimized leakage profile reduces noise coupling into feedback path, improving current regulation accuracy by <0.5 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT5250H-B11-Q | ±2 % VZ tolerance (10.8 V–11.2 V), lower rdiff (≤150 Ω at IZ = 1 mA), tighter SZ (±0.05 mV/K) | Preferred where higher initial accuracy and lower tempco are required, e.g., precision sensor calibration | Select when absolute VZ stability over temperature outweighs cost sensitivity |
| MMSZ5240B-TP | 10 V nominal, ±5 %, SOD-123 package, 500 mW Ptot, higher IR (≤5 µA at VR = 8 V) | Suitable for non-automotive consumer applications with relaxed thermal and leakage requirements | Choose only if AEC-Q101 qualification and 11 V rating are not mandatory |
Compared with BZT5250H-C11-Q, the BZT5250H-B11-Q offers tighter voltage tolerance and lower temperature coefficient but at higher unit cost, while MMSZ5240B-TP lacks automotive qualification and delivers inferior thermal performance (500 mW vs. 830 mW) and leakage control (5 µA vs. 0.05 µA).
Availability
BZT5250H-C11-Q is available at Aetrix Electronics and suitable for automotive cabin electronics, portable medical instrumentation, industrial IoT sensor nodes, and LED driver feedback clamping requiring stable component supply with AEC-Q101 compliance and SOD123F footprint compatibility.
Supply support for BZT5250H-C11-Q 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 logic, discrete, and MOSFET devices, headquartered in Nijmegen, Netherlands.
The BZT5250H-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for low-current voltage regulation in safety-critical and thermally constrained environments such as engine control units and ADAS subsystems.
FAQ
What is the exact Zener voltage range for BZT5250H-C11-Q at 50 µA test current?
The confirmed Zener voltage range is 10.45 V to 11.55 V at IZ = 50 µA and Tj = 25 °C, per Table 8 of the official Nexperia datasheet Rev. 2 (18 July 2024). This ±5 % tolerance band is measured under standardized low-current conditions to ensure repeatability in battery-powered designs.
Does BZT5250H-C11-Q support reflow soldering, and what is the recommended footprint?
Yes - reflow soldering is the only recommended method. The official footprint (Fig. 10) specifies 2.8 mm × 1.2 mm solder land per pad, 2.9 mm × 1.1 mm occupied area, and 4.4 mm × 2.1 mm overall stencil opening for SOD123F, ensuring reliable thermal transfer and mechanical adhesion per IPC-7351B standards.
How does the "intentional minor rise of leakage current" affect circuit performance?
This design feature, documented in Application Note AN90031, slightly increases IR to suppress high-frequency oscillation and reduce switching noise in feedback loops - verified in automotive sensor biasing where it improves signal-to-noise ratio by up to 8 dB compared to conventional Zeners at 1 MHz.
Is thermal derating required above 25 °C ambient, and what is the slope?
Yes - linear derating applies above Tamb = 25 °C. From the datasheet's limiting values table, Ptot decreases by 6.64 mW/°C above 25 °C, calculated from (830 mW − 0) / (150 °C − 25 °C), enabling accurate power budgeting for under-hood deployments up to +125 °C ambient.
BZT5250H-C11-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:
- ±5%
- 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-C11-QX FAQ
1.How can I place an order for BZT5250H-C11-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C11-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-C11-QX reliable?
The price and inventory of BZT5250H-C11-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-C11-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C11-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C11-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C11-QX?
BZT5250H-C11-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C11-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-C11-QX?
For technical support, including BZT5250H-C11-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C11-QX requirements.
6.How does Aetrix verify that BZT5250H-C11-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C11-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-C11-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C11-QX?
All BZT5250H-C11-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C11-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-C11-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C11-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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