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Nexperia USA Inc. BZT5250H-B16-QX
- Part No.:
- BZT5250H-B16-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B16-QX.pdf
- Description:
- DIODE ZENER 16V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,872
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Product details
Overview
BZT5250H-B16-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 15.2–16.8 V nominal Zener voltage with ±5 % tolerance, 200 mW power dissipation at 25 °C ambient, and specified test current of 50 µA - ideal for battery-powered sensor biasing and automotive microcontroller reference rails.
For engineers reviewing the BZT5250H-B16-QX datasheet, BZT5250H-B16-QX pinout, BZT5250H-B16-QX application, or BZT5250H-B16-QX equivalent, key selection criteria include its AEC-Q101 qualification, low-leakage optimized switching behavior, thermal resistance of 150 K/W to solder point, and compatibility with reflow-only assembly on FR4 PCBs.
Technical Context
This Zener diode operates as a two-terminal shunt voltage regulator, maintaining stable reverse-biased breakdown across its cathode-anode terminals. Its differential resistance is ≤200 Ω at IZ = 5 mA, and temperature coefficient is +0.05 mV/K at 16 V nominal, enabling predictable drift compensation in automotive ambient ranges (−55 °C to +150 °C).
The device uses intentional minor leakage current rise per AN90031 to reduce switching noise and improve transient response in low-power analog monitoring circuits. It is not intended for high-current regulation but excels in signal-level clamping and reference stabilization where <100 µA bias current suffices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 15.2 V to 16.8 V at IZ = 50 µA - defines precise regulation threshold for low-bias circuits |
| Tolerance | ±5 % - supports cost-optimized designs where tighter tolerance is unnecessary |
| Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - enables operation on standard FR4 PCB with 1 cm² cathode pad |
| Differential Resistance rdiff | ≤200 Ω at IZ = 5 mA - ensures minimal output voltage shift under small load variations |
| Forward Voltage VF | 0.9 V at IF = 10 mA - confirms low-loss conduction when used in forward-biased protection paths |
| Junction Temperature | 150 °C maximum - supports continuous operation in under-hood automotive environments |
| Thermal Resistance Rth(j-sp) | 150 K/W to solder point - informs thermal design margin for surface-mount layout |
Pinout & Package
SOD123F plastic surface-mount 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 voltage node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms shunt path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Low test current specification | Rated at 50 µA - reduces quiescent current in always-on battery systems |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - improves switching speed and noise immunity |
| Reflow-only soldering | Compatible with standard Pb-free reflow profiles - eliminates need for wave or hand-soldering |
| Small footprint | SOD123F outline fits high-density layouts without compromising thermal pad area |
Applications
| Automotive Body Control Module (BCM) Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 16 V reference for LIN transceiver biasing in door module ECUs. IC Role / Device Role / Timing Role: Shunt Zener regulator establishing fixed voltage node for analog comparator input. Use Value: Enables accurate threshold detection despite battery voltage fluctuations from 9 V to 16 V. | Use Scenario: Biasing thermistor bridge in HVAC temperature sensing circuit powered by coin cell. IC Role / Device Role / Timing Role: Low-current voltage reference stabilizing bridge excitation voltage. Use Value: Maintains measurement accuracy with <1 µA standby current draw over 10-year shelf life. |
| Portable Medical Pulse Oximeter LED Driver | Smart Meter Real-Time Clock (RTC) Backup |
Use Scenario: Regulating drive voltage for red/IR LEDs in battery-operated wearable oximeters. IC Role / Device Role / Timing Role: Precision shunt regulator limiting peak LED forward voltage during pulsed operation. Use Value: Prevents LED overvoltage while consuming only 50 µA - extends single-charge runtime by 12 %. | Use Scenario: Supplying clean 16 V bias to RTC oscillator circuit during main power loss. IC Role / Device Role / Timing Role: Low-leakage Zener clamp protecting supercapacitor-backed RTC supply rail. Use Value: Limits voltage drift to ±0.2 V over −40 °C to +85 °C, ensuring ±2 ppm timekeeping stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT5250H-C16-Q | Same Zener voltage range (15.2–16.8 V) but ±2 % tolerance and lower rdiff (≤170 Ω) | Used where tighter regulation stability is required, e.g., precision ADC reference buffers | Select when system-level voltage error budget is <0.3 V and cost premium is acceptable |
| MMSZ5245B-TP | 16 V nominal, ±5 %, 500 mW Ptot, SOD-123 package, no AEC-Q101 qualification | Suitable for industrial consumer products but not automotive under-hood use | Choose for non-automotive cost-sensitive designs requiring higher power headroom |
Compared with BZT5250H-B16-QX, the C16-Q offers tighter tolerance and lower dynamic impedance for improved regulation fidelity, while MMSZ5245B-TP provides higher power rating but lacks automotive qualification and optimized leakage behavior.
Availability
BZT5250H-B16-QX is available at Aetrix Electronics and suitable for automotive body electronics, portable medical sensors, smart meter backup supplies, and industrial IoT edge nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT5250H-B16-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.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current voltage reference and regulation in harsh-environment automotive and portable electronics.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZT5250H-B16-QX has a nominal Zener voltage of 16 V with a guaranteed range of 15.2 V to 16.8 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, corresponding to ~200 V transient clamping capability under short-duration events.
Is this part suitable for use in a 12 V automotive system with load-dump transients?
Yes - BZT5250H-B16-QX is AEC-Q101 qualified and rated for 150 °C junction temperature. While it regulates at 16 V, its 40 W non-repetitive surge rating allows it to absorb brief load-dump energy when used with appropriate series impedance, making it suitable for post-regulator clamping or reference stabilization in 12 V domains.
How does the "B" suffix differ from "C" in the BZT5250H-Q series?
The "B" suffix denotes ±5 % Zener voltage tolerance (e.g., B16-Q = 15.2–16.8 V), while "C" indicates ±2 % tolerance (e.g., C16-Q = 15.68–16.32 V). Both share identical package, thermal specs, and AEC-Q101 qualification, but "C" variants offer tighter regulation for precision analog circuits.
Can this diode be used in forward conduction mode as a regular rectifier?
No - BZT5250H-B16-QX is optimized for reverse-biased Zener operation. Its forward voltage is 0.9 V at 10 mA, but it lacks the surge current rating (IFSM) and reverse recovery characteristics required for rectification. Use dedicated Schottky or general-purpose rectifiers instead.
BZT5250H-B16-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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12.1 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-B16-QX FAQ
1.How can I place an order for BZT5250H-B16-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B16-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-B16-QX reliable?
The price and inventory of BZT5250H-B16-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-B16-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B16-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B16-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B16-QX?
BZT5250H-B16-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B16-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-B16-QX?
For technical support, including BZT5250H-B16-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B16-QX requirements.
6.How does Aetrix verify that BZT5250H-B16-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B16-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-B16-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B16-QX?
All BZT5250H-B16-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B16-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-B16-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B16-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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