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Nexperia USA Inc. BZT5250H-C1V8-QX
- Part No.:
- BZT5250H-C1V8-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C1V8-QX.pdf
- Description:
- DIODE ZENER 1.8V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,892
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Product details
Overview
BZT5250H-C1V8-Q from Nexperia is a low-current Zener diode in SOD123F package, rated for 1.8 V nominal Zener voltage at 50 µA test current, with ±5 % tolerance, 830 mW total power dissipation, and AEC-Q101 qualification for automotive use - deployed in precision biasing and low-power voltage reference circuits.
For engineers reviewing the BZT5250H-C1V8-Q datasheet, BZT5250H-C1V8-Q pinout, BZT5250H-C1V8-Q application, or BZT5250H-C1V8-Q equivalent, key selection criteria include low-test-current regulation (50 µA), intentional leakage optimization for noise reduction, thermal resistance (150 K/W junction-to-solder point), and automotive-grade reliability per AEC-Q101.
Technical Context
This Zener diode operates as a two-terminal voltage reference with cathode-anode polarity, specified at IZ = 50 µA for stable low-bias performance. Its differential resistance is ≤600 Ω at 5 mA, and temperature coefficient is −3.5 mV/K over 25 °C, enabling predictable drift compensation in portable systems.
The device features intentionally elevated reverse leakage (≤1.0 µA at VR = 1.0 V) to improve switching speed and reduce high-frequency noise - a design trade-off validated in AN90031 and distinct from standard B-series variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 1.71 V to 1.89 V at IZ = 50 µA - ensures tight 1.8 V regulation under ultra-low bias conditions typical in battery-powered sensors. |
| Tolerance | ±5 % - defines worst-case output deviation for reference stability in cost-sensitive automotive subsystems. |
| Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - supports sustained operation in compact surface-mount layouts without forced cooling. |
| Differential Resistance (rdiff) | ≤600 Ω at IZ = 5 mA - limits output impedance impact on load regulation in feedback networks. |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables efficient forward conduction during transient clamping or dual-mode circuit operation. |
| Junction Temperature (Tj) | −55 °C to +150 °C - guarantees functionality across full automotive under-hood thermal range. |
| AEC-Q101 Qualified | Yes - certified for stress testing including HTGB, HTRB, and ESD per AEC standard, required for engine control and ADAS modules. |
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) | Negative terminal; marking bar identifies this pin - connects to regulated node or ground return in shunt configuration. |
| 2 | Anode (A) | Positive terminal; ties to unregulated supply - reverse-biased operation establishes stable VZ drop across terminals. |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at IZ = 50 µA - enables accurate voltage reference in micro-power MCU sleep modes and energy-harvesting circuits. |
| Optimized leakage profile | Intentional IR ≤1.0 µA at VR = 1.0 V - reduces high-frequency noise and improves turn-on speed vs. standard Zeners. |
| Automotive qualification | AEC-Q101 compliant - validated for temperature cycling, humidity, and mechanical shock in safety-critical vehicle ECUs. |
| Thermal performance | Rth(j-sp) = 150 K/W - allows reliable power handling on standard FR4 PCBs without thermal vias or heatsinks. |
Applications
| Automotive Cabin Sensors | Portable Medical Monitors |
|---|---|
|
Use Scenario: Voltage reference for analog front-end of tire pressure monitoring system (TPMS) sensor ICs operating on coin-cell batteries. IC Role / Device Role / Timing Role: Shunt Zener regulator providing stable 1.8 V bias to ADC reference input and op-amp rails. Use Value: Ultra-low 50 µA test current minimizes quiescent drain, extending 10-year battery life while maintaining ±5 % accuracy over −40 °C to +125 °C. |
Use Scenario: Precision biasing of low-power ECG amplifier stages in wearable cardiac monitors. IC Role / Device Role / Timing Role: Low-noise voltage reference stabilizing gain-setting resistors and comparator thresholds. Use Value: Intentionally elevated leakage suppresses RF interference from Bluetooth LE transceivers, reducing baseline noise by >3 dB in clinical-grade signal chains. |
| Industrial IoT Edge Nodes | ADAS Camera Power Sequencing |
|
Use Scenario: Reference source for 12-bit SAR ADC measuring thermistor-based temperature in smart building controllers. IC Role / Device Role / Timing Role: Passive Zener shunt regulating LDO input to maintain clean 1.8 V supply for digital logic and sensor interface. Use Value: ±5 % tolerance and −3.5 mV/K tempco allow direct calibration in firmware without external trimming components. |
Use Scenario: Biasing voltage supervisor ICs that control power-up sequencing of image signal processors in surround-view camera modules. IC Role / Device Role / Timing Role: Stable 1.8 V reference triggering reset assertion when main 3.3 V rail falls below threshold. Use Value: AEC-Q101 qualification ensures functional integrity during cold-crank transients and ISO 16750-2 load-dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT5250H-B1V8-Q | ±2 % tolerance, lower leakage (≤0.8 µA at VR = 1.0 V), same VZ range and package | Preferred where tighter regulation is critical and noise sensitivity is secondary | Select for high-accuracy analog measurement paths requiring <±20 mV error budget |
| MMSZ5221B-TP | 1.8 V nominal, ±5 %, SOD-123 package, but only AEC-Q200 rated (not Q101), Ptot = 500 mW | Acceptable for non-safety automotive modules (e.g., infotainment), not for powertrain or ADAS | Choose only for cost-driven consumer or industrial designs lacking automotive qualification requirements |
Compared with BZT5250H-C1V8-Q, the B-series offers higher precision at the expense of noise performance, while MMSZ5221B-TP sacrifices automotive reliability and power capability for lower unit cost - making the C-series optimal for noise-sensitive, AEC-Q101–mandated applications.
Availability
BZT5250H-C1V8-Q is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, industrial IoT edge nodes, and ADAS camera power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT5250H-C1V8-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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101–qualified Zener portfolio, engineered specifically for low-current, low-noise voltage regulation in automotive and portable electronics where precision, thermal robustness, and long-term stability are essential.
FAQ
What is the maximum reverse voltage (VR) before breakdown for BZT5250H-C1V8-Q?
The device exhibits sharp Zener breakdown at nominal 1.8 V, with guaranteed VZ between 1.71 V and 1.89 V at IZ = 50 µA. Below 1.71 V, reverse current remains ≤1.0 µA - no defined "maximum reverse voltage" exists prior to breakdown, as it is a graded junction designed for controlled conduction above VZ.
Can BZT5250H-C1V8-Q be used in forward-biased mode as a regular diode?
Yes - its forward voltage is ≤0.9 V at 10 mA, matching standard silicon diodes. However, it is not optimized for rectification: maximum continuous forward current is limited to 200 mA, and thermal resistance is higher than dedicated signal diodes, making it suitable only for low-duty-cycle or auxiliary bias functions.
How does the "C" suffix differ from "B" in the BZT5250H-Q series?
The "C" suffix denotes ±5 % tolerance and intentional leakage current optimization for fast switching and noise reduction (per AN90031), whereas "B" indicates ±2 % tolerance and lower leakage. Both share identical package, power rating, and thermal specs - the choice depends on whether precision or noise performance is prioritized.
Is thermal derating required above 25 °C ambient?
Yes - total power dissipation must be linearly reduced above 25 °C using Rth(j-a) = 330 K/W. At 85 °C ambient, maximum allowable Ptot drops to approximately 420 mW. Derating curves are provided in Figure 1 of the datasheet for non-repetitive surge and steady-state conditions.
BZT5250H-C1V8-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):
- 1.8 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 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-C1V8-QX FAQ
1.How can I place an order for BZT5250H-C1V8-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C1V8-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-C1V8-QX reliable?
The price and inventory of BZT5250H-C1V8-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-C1V8-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C1V8-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C1V8-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C1V8-QX?
BZT5250H-C1V8-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C1V8-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-C1V8-QX?
For technical support, including BZT5250H-C1V8-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C1V8-QX requirements.
6.How does Aetrix verify that BZT5250H-C1V8-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C1V8-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-C1V8-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C1V8-QX?
All BZT5250H-C1V8-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C1V8-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-C1V8-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C1V8-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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