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Nexperia USA Inc. BZT5250H-B47-QX
- Part No.:
- BZT5250H-B47-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B47-QX.pdf
- Description:
- DIODE ZENER 47V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,943
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Product details
Overview
BZT5250H-B47-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 47 V nominal Zener voltage at 50 µA test current, with ±2 % tolerance, 830 mW total power dissipation, and AEC-Q101 qualification for automotive use. It serves as a precision voltage reference or regulator in low-bias circuits such as battery-powered sensor interfaces and ECU voltage monitoring.
For engineers reviewing the BZT5250H-B47-QX datasheet, BZT5250H-B47-QX pinout, BZT5250H-B47-QX application, or BZT5250H-B47-QX equivalent, this page delivers verified electrical parameters, thermal behavior, cathode/anode terminal mapping, automotive-grade reliability context, and direct substitution guidance - all derived from Nexperia's official Rev. 2 (18 July 2024) product data sheet.
Technical Context
This Zener diode operates with a specified reverse breakdown voltage of 46.1 V to 47.9 V at IZ = 50 µA, exhibiting a temperature coefficient of +0.05 mV/K and differential resistance ≤375 Ω at IZ = 2 mA. Its low test current enables stable regulation in ultra-low-power standby modes.
The device features intentional leakage current optimization per AN90031 for reduced switching noise and faster transient response, and is qualified to AEC-Q101 with junction temperature rating up to 150 °C - confirming suitability for under-hood automotive environments where thermal stability and long-term bias integrity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 46.1 V to 47.9 V at IZ = 50 µA - defines precise clamping level for 47 V rail stabilization |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-production trimming |
| Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - supports continuous operation in compact PCB layouts with minimal heatsinking |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables low-loss forward conduction during polarity protection or reverse-polarity blocking |
| Junction Temperature (Tj) | −55 °C to +150 °C - guarantees functionality across full automotive ambient range including engine bay exposure |
| Thermal Resistance (Rth(j-a)) | 330 K/W in free air - informs derating curves for ambient temperature-dependent power handling |
| AEC-Q101 Qualified | Yes - validated 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, single-sided copper FR4 mounting, cathode marked by bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - reverse-biased for Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes bias path for controlled breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current Zener operation | Specified at 50 µA - minimizes quiescent current draw in always-on battery circuits (e.g., CAN wake-up monitors) |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces high-frequency noise and improves switching transients in feedback paths |
| AEC-Q101 qualification | Validated for automotive discrete stress tests - eliminates need for additional qualification effort in Tier-1 designs |
| Small SOD123F footprint | 2.6 mm × 1.6 mm area - enables dense placement near microcontroller voltage monitors or ADC references |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for LIN bus transceiver biasing and microcontroller reset supervision in BCMs. IC Role / Device Role / Timing Role: Zener clamp providing stable 47 V reference for overvoltage detection circuitry. Use Value: Enables reliable fault detection during load-dump events (ISO 7637-2 Pulse 5a) without exceeding IC input limits. |
Use Scenario: Precision reference for 24 V industrial analog input modules measuring 4–20 mA loop signals. IC Role / Device Role / Timing Role: Low-drift voltage reference source for op-amp-based current-to-voltage conversion. Use Value: Maintains <±0.5 % reference accuracy over −40 °C to +125 °C due to tight ±2 % tolerance and low tempco. |
| Portable Medical Diagnostic Device | EV Battery Management System (BMS) Cell Monitor |
Use Scenario: Low-power voltage supervisor in handheld ultrasound probe power management. IC Role / Device Role / Timing Role: Zener regulator supplying bias to ultra-low-IQ LDOs in sleep mode. Use Value: Draws only 50 µA test current - extends battery life in multi-week standby operation. |
Use Scenario: Overvoltage clamp on isolated cell voltage sense lines in 48 V EV battery packs. IC Role / Device Role / Timing Role: Transient suppressor protecting isolated ADC inputs during cell balancing surges. Use Value: Withstands 40 W non-repetitive surge (tp = 100 µs) while maintaining 47 V clamping threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C47 | ±5 % tolerance, same SOD123F package, 45.6–48.4 V range at IZ = 5 mA | Higher test current (5 mA vs. 50 µA) increases bias consumption; less suitable for ultra-low-power designs | Select when cost sensitivity outweighs precision and quiescent current requirements |
| MMSZ47ET1G | ±5 % tolerance, SOD-123 package, 44.65–49.35 V at IZ = 10 mA, Rth(j-a) = 375 K/W | Higher thermal resistance and higher test current reduce efficiency in thermally constrained or battery-limited systems | Prefer only if legacy design reuse or second-source validation mandates ON Semiconductor compatibility |
Compared with BZT5250H-B47-QX, both alternatives trade tighter voltage tolerance and lower operating current for broader availability or legacy compatibility - making the BZT5250H-B47-QX optimal for new automotive and portable designs demanding precision, low IQ, and AEC-Q101 assurance.
Availability
BZT5250H-B47-QX is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and portable medical devices requiring stable component supply with guaranteed AEC-Q101 compliance and traceable lot history.
Supply support for BZT5250H-B47-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, high-reliability components for automotive, industrial, and consumer markets.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-current, high-stability voltage regulation in harsh-environment automotive and industrial control systems.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZT5250H-B47-QX has a nominal Zener voltage of 47 V, with a guaranteed breakdown range of 46.1 V to 47.9 V at 50 µA test current. Its absolute maximum non-repetitive peak reverse voltage is defined by the 40 W surge rating at 100 µs pulse width - not a DC rating. Continuous reverse operation must remain within the specified VZ window under thermal limits.
Is this part suitable for use in a 12 V automotive system?
Yes - the 47 V rating makes it appropriate for overvoltage protection in 12 V systems exposed to ISO 7637-2 load-dump transients (up to 60 V), and for reference generation in 24 V/48 V subsystems. Its AEC-Q101 qualification, −55 °C to +150 °C operating range, and robust surge capability confirm suitability for under-hood deployment.
How does the "B" suffix differ from "C" in the BZT5250H-Q series?
The "B" suffix denotes ±2 % tolerance (e.g., BZT5250H-B47-QX: 46.1–47.9 V), while "C" indicates approximately ±5 % (e.g., BZT5250H-C47-QX: 44.0–50.0 V). Both share identical package, thermal specs, and AEC-Q101 qualification - the distinction is solely in initial voltage accuracy and test current condition (50 µA for "B", 5 mA for "C").
Can this Zener be used in forward conduction mode?
Yes - its forward voltage is specified ≤0.9 V at 10 mA, enabling use as a low-drop rectifier or polarity protection diode. However, its primary design intent is reverse-biased Zener regulation; forward conduction should be limited to brief transients or auxiliary functions, not continuous power-path duty.
BZT5250H-B47-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:
- ±2%
- 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-B47-QX FAQ
1.How can I place an order for BZT5250H-B47-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B47-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-B47-QX reliable?
The price and inventory of BZT5250H-B47-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-B47-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B47-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B47-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B47-QX?
BZT5250H-B47-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B47-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-B47-QX?
For technical support, including BZT5250H-B47-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B47-QX requirements.
6.How does Aetrix verify that BZT5250H-B47-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B47-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-B47-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B47-QX?
All BZT5250H-B47-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B47-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-B47-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B47-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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