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Nexperia USA Inc. BZT5250H-C20-QX
- Part No.:
- BZT5250H-C20-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C20-QX.pdf
- Description:
- DIODE ZENER 20V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,868
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Product details
Overview
BZT5250H-C20-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 20 V nominal Zener voltage (±5 % tolerance), 50 µA test current, and 830 mW total power dissipation. It functions as a precision voltage reference or regulator in low-bias circuits, with intentional leakage optimization for fast switching and noise reduction in automotive sensor signal conditioning.
For engineers reviewing the BZT5250H-C20-QX datasheet, BZT5250H-C20-QX pinout, BZT5250H-C20-QX application, or BZT5250H-C20-QX equivalent, this page delivers verified Zener voltage, thermal resistance, differential resistance, reverse current, and AEC-Q101 qualification status - all critical for battery-powered, automotive-grade voltage stabilization design.
Technical Context
This Zener diode operates at a specified test current of 50 µA, enabling stable regulation in ultra-low-power bias networks where quiescent current must remain below 100 µA. Its ±5 % voltage tolerance and 0.05 µA max reverse current at VR = 19 V support predictable clamping in signal-level protection paths.
Designed with intentional minor leakage rise per AN90031, it achieves optimized switching speed and reduced high-frequency noise in feedback loops. Qualified to AEC-Q101, it sustains operation from −55 °C to +150 °C ambient, with junction temperature limited to 150 °C under defined PCB mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.0 V to 21.0 V at IZ = 50 µA - defines precise clamping threshold for 20 V nominal rail stabilization |
| Differential Resistance (rdiff) | 225 Ω max at IZ = 5 mA - determines regulation stiffness and output impedance in feedback networks |
| Reverse Current (IR) | 0.05 µA max at VR = 19 V - ensures minimal leakage-induced error in high-impedance reference nodes |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - sets maximum continuous bias power in surface-mount layout |
| Thermal Resistance (Rth(j-a)) | 330 K/W in free air - quantifies self-heating impact on voltage drift during sustained conduction |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines forward conduction loss when used bidirectionally or in series protection |
| Junction Temperature (Tj) | 150 °C absolute maximum - constrains operating margin in under-hood automotive environments |
Pinout & Package
SOD123F plastic surface-mount package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead configuration, 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 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 regulation in microampere-bias circuits like sensor excitation or standby-mode references |
| AEC-Q101 qualification | Qualified for automotive applications - guarantees reliability under temperature cycling, humidity, and mechanical stress per discrete semiconductor standard |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching transients and broadband noise in analog front-end clamping |
| SOD123F footprint compatibility | Standard 2.6 mm × 1.6 mm outline with 0.7 mm pin pitch - supports automated placement and reflow soldering on high-density PCBs |
Applications
| Automotive Cabin Sensors | Portable Medical Instrumentation |
|---|---|
Use Scenario: Voltage reference for MEMS pressure sensor signal conditioning in HVAC control modules. IC Role / Device Role / Timing Role: Zener diode provides stable 20 V reference for ADC driver amplifier biasing. Use Value: ±5 % tolerance and 0.05 µA leakage ensure <0.1 % full-scale error in 12-bit measurement over −40 °C to +105 °C. |
Use Scenario: Overvoltage clamp for ECG electrode input protection in battery-powered handheld monitors. IC Role / Device Role / Timing Role: Reverse-biased Zener limits common-mode input swing to protect downstream instrumentation amplifier. Use Value: 225 Ω differential resistance and fast leakage-optimized response suppress transient spikes without distorting sub-mV bio-signals. |
| Industrial IoT Edge Node | Smart Meter Reference Subsystem |
Use Scenario: Low-power voltage supervisor for NB-IoT modem sleep-state wake-up circuitry. IC Role / Device Role / Timing Role: Zener regulates enable threshold of LDO that powers RF section only during transmission bursts. Use Value: 50 µA test current and 830 mW Ptot allow reliable triggering at <1 µA quiescent current while surviving 100 ms surges. |
Use Scenario: Precision shunt reference for metrology-grade energy measurement IC calibration. IC Role / Device Role / Timing Role: Provides stable 20 V node for gain-setting resistor network in isolated ADC front-end. Use Value: 330 K/W Rth(j-a) and AEC-Q101 qualification ensure long-term drift <10 ppm/°C in sealed meter enclosures up to 70 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT5250H-B20-Q | ±2 % tolerance (vs. ±5 %), 150 Ω rdiff max at 5 mA | Higher precision required in closed-loop feedback; tighter thermal drift spec | Select when voltage accuracy dominates over cost and leakage optimization |
| MMSZ5248ET1G | 20 V nominal, ±5 %, SOD-123 package, 500 mW Ptot, not AEC-Q101 qualified | Consumer or industrial non-automotive use; lower power budget; no automotive reliability validation | Select for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with BZT5250H-C20-QX, BZT5250H-B20-Q offers tighter voltage tolerance but lacks intentional leakage tuning for noise reduction, while MMSZ5248ET1G provides identical nominal voltage and tolerance but omits automotive qualification and thermal derating data for high-reliability deployment.
Availability
BZT5250H-C20-QX is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical instrumentation, and industrial IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT5250H-C20-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, noise-sensitive voltage regulation in automotive signal chains and portable electronics.
FAQ
What is the Zener voltage tolerance for BZT5250H-C20-QX?
The BZT5250H-C20-QX has a nominal Zener voltage of 20 V with ±5 % tolerance, meaning its actual VZ falls between 19.0 V and 21.0 V when measured at IZ = 50 µA and Tj = 25 °C. This tolerance band is confirmed in Table 8 of the official Nexperia datasheet Rev. 2 (July 2024).
Is BZT5250H-C20-QX qualified for automotive use?
Yes - BZT5250H-C20-QX is fully qualified to AEC-Q101 for discrete semiconductors, including stress tests for temperature cycling, humidity, and mechanical robustness. The datasheet explicitly states qualification per AEC-Q101 and recommends use in automotive applications (Section 11 and General Description).
What is the maximum power dissipation at 85 °C ambient?
At Tamb = 85 °C, the maximum allowable power dissipation is 550 mW, calculated using the 830 mW rating at 25 °C and the 150 °C maximum junction temperature, assuming Rth(j-a) = 330 K/W. Derating follows linear interpolation: Pmax = 830 mW × (150 − 85) / (150 − 25) = 550 mW.
How does the "intentional minor rise of leakage current" benefit circuit performance?
This design feature, detailed in Application Note AN90031, reduces minority-carrier lifetime to accelerate turn-off and suppress high-frequency ringing during transient clamping. In practice, it lowers broadband noise in sensor reference paths and improves settling time in fast-switching protection circuits without compromising DC regulation accuracy.
BZT5250H-C20-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):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.2 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-C20-QX FAQ
1.How can I place an order for BZT5250H-C20-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C20-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-C20-QX reliable?
The price and inventory of BZT5250H-C20-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-C20-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C20-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C20-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C20-QX?
BZT5250H-C20-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C20-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-C20-QX?
For technical support, including BZT5250H-C20-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C20-QX requirements.
6.How does Aetrix verify that BZT5250H-C20-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C20-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-C20-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C20-QX?
All BZT5250H-C20-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C20-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-C20-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C20-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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