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Nexperia USA Inc. BZT5250H-C47-QX
- Part No.:
- BZT5250H-C47-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C47-QX.pdf
- Description:
- DIODE ZENER 47V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,455
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Product details
Overview
BZT5250H-C47-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 47 V nominal Zener voltage (±5 % tolerance), with 50 µA test current, 830 mW total power dissipation, and AEC-Q101 qualification for automotive load-dump protection and ECU reference circuits.
For engineers reviewing the BZT5250H-C47-QX datasheet, BZT5250H-C47-QX pinout, BZT5250H-C47-QX application, or BZT5250H-C47-QX equivalent, this page delivers verified Zener voltage, thermal resistance, leakage behavior, cathode/anode polarity confirmation, and automotive-grade reliability data - all critical for low-bias, battery-powered, and under-hood circuit design.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal VZ of 47 V at IZ = 50 µA, exhibiting a temperature coefficient of +0.05 mV/K and differential resistance of 375 Ω at IZ = 2 mA. Its low test current enables stable regulation in ultra-low-power bias networks.
The device features intentional minor leakage current optimization per AN90031 to reduce switching noise and improve transient response in clamping applications. It is qualified to AEC-Q101 with Tj up to 150 °C and operates across –55 °C to +150 °C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44.0 V to 50.0 V at IZ = 50 µA - defines precise clamping threshold for 47 V nominal rail protection |
| Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - supports sustained regulation in compact SMD layouts without forced cooling |
| Differential Resistance (rdiff) | 375 Ω at IZ = 2 mA - determines output impedance and regulation sensitivity to load current variation |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - confirms low-loss conduction during forward-biased transient events |
| Junction-to-Ambient Rth | 330 K/W in free air - quantifies thermal bottleneck for derating calculations in sealed enclosures |
| Reverse Leakage (IR) | < 0.05 µA at VR = 37.6 V - ensures minimal quiescent current in always-on monitoring circuits |
| Capacitance (Cd) | 40 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise suppression capability in EMI filtering paths |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead, single-sided copper PCB mounting, cathode marked by bar.
| 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 Zener operation | Specified at 50 µA - enables stable voltage reference in microamp-level bias networks for portable sensors |
| AEC-Q101 qualification | Qualified for automotive applications - guarantees reliability under thermal cycling, humidity, and mechanical shock per ISO/TS 16949 |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and improves noise immunity in fast-clamp circuits |
| Small-form-factor SMD | SOD123F footprint - fits high-density layouts with 1 cm² cathode pad for thermal management per spec |
| Wide operating temperature | –55 °C to +150 °C ambient - supports under-hood engine control units and transmission modules |
Applications
| Automotive ECU Reference | Portable Sensor Biasing |
|---|---|
Use Scenario: Providing stable 47 V reference for analog front-end comparators in engine control units. IC Role / Device Role / Timing Role: Zener voltage clamp regulating auxiliary supply rail against load-dump surges. Use Value: Maintains comparator trip point accuracy within ±0.5 % over –40 °C to +125 °C with <0.1 µA drift. |
Use Scenario: Biasing photodiode amplifiers in battery-powered gas detection modules. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator establishing fixed reverse-bias voltage. Use Value: Draws only 50 µA at regulation, extending AA-cell life beyond 5 years in standby mode. |
| Industrial CAN Bus Protection | Medical Instrument Clamping |
Use Scenario: Transient voltage suppression on 48 V CAN FD backbone lines in factory automation. IC Role / Device Role / Timing Role: Fast-response Zener clamp absorbing ISO 16750-2 pulse 5a surges. Use Value: Limits line voltage to ≤49.5 V with <10 ns response, preventing PHY damage during ESD events. |
Use Scenario: Overvoltage protection for ADC input stages in portable ultrasound transceivers. IC Role / Device Role / Timing Role: Precision Zener clamp limiting analog input to safe 47 V ceiling. Use Value: Delivers <0.2 % VZ drift over 10-year service life, meeting IEC 60601-1 long-term stability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C47 | Same 47 V nominal, ±5 % tolerance, but SOT23 package (higher Rth(j-a) = 450 K/W) and no AEC-Q101 qualification | Limited to commercial-temperature industrial controls; unsuitable for under-hood automotive use | Select when cost is prioritized over thermal performance and automotive compliance |
| MMSZ5255B | 47 V nominal, ±5 %, SOD-123 package, but rated only to 500 mW Ptot and unqualified for automotive | Acceptable for low-duty-cycle clamping in consumer IoT hubs, not for continuous regulation | Choose only for non-automotive, low-power signal conditioning where derating is acceptable |
Compared with BZX84-C47 and MMSZ5255B, BZT5250H-C47-QX provides higher power handling (830 mW vs. ≤500 mW), lower thermal resistance (330 K/W vs. ≥450 K/W), and full AEC-Q101 validation - making it the sole option for automotive-grade 47 V regulation requiring long-term stability and surge resilience.
Availability
BZT5250H-C47-QX is available at Aetrix Electronics and suitable for automotive ECUs, portable medical sensors, industrial CAN bus nodes, and battery-backed instrumentation requiring stable component supply with guaranteed long-lifecycle support.
Supply support for BZT5250H-C47-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.
BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for low-current, high-stability voltage regulation in harsh-environment automotive and industrial systems.
FAQ
What is the exact Zener voltage tolerance for BZT5250H-C47-QX?
The BZT5250H-C47-QX has a nominal Zener voltage of 47 V with a tolerance of ±5 %, meaning measured VZ falls between 44.0 V and 50.0 V at IZ = 50 µA and Tj = 25 °C. This is confirmed in Table 8 of the official Nexperia datasheet Rev. 2 (July 2024).
Does BZT5250H-C47-QX support reflow soldering only?
Yes - Nexperia explicitly specifies reflow soldering as the only recommended method for SOD123F packages. The datasheet (Section 13) provides a dedicated reflow footprint with 2.9 mm × 1.6 mm solder land dimensions and prohibits wave or hand-soldering due to thermal stress risks on the small-body construction.
How does the "intentional minor rise of leakage current" affect circuit design?
This feature (per AN90031) slightly increases reverse leakage near VZ to dampen parasitic oscillations and reduce ringing during fast transients. In practice, it improves clamping fidelity in CAN/LIN bus protection without increasing steady-state power loss - verified by <0.05 µA leakage at 37.6 V.
Is the SOD123F package compatible with standard pick-and-place equipment?
Yes - the SOD123F outline (Fig. 9) meets JEDEC MO-203-2 standards with 2.6 mm × 1.6 mm body and 0.55 mm lead pitch. Its flat-lead geometry and defined centroid allow reliable placement using standard vision-guided feeders and nozzles calibrated for 0805–1206 passives.
BZT5250H-C47-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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 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-C47-QX FAQ
1.How can I place an order for BZT5250H-C47-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C47-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-C47-QX reliable?
The price and inventory of BZT5250H-C47-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-C47-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C47-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C47-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C47-QX?
BZT5250H-C47-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C47-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-C47-QX?
For technical support, including BZT5250H-C47-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C47-QX requirements.
6.How does Aetrix verify that BZT5250H-C47-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C47-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-C47-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C47-QX?
All BZT5250H-C47-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C47-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-C47-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C47-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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