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Nexperia USA Inc. BZT5250H-C9V1-QX
- Part No.:
- BZT5250H-C9V1-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C9V1-QX.pdf
- Description:
- DIODE ZENER 9.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,142
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Product details
Overview
BZT5250H-C9V1-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 9.1 V nominal Zener voltage with ±5 % tolerance, specified at 50 µA test current, and rated for 830 mW total power dissipation. It serves as a stable reference or clamp in low-power bias networks of automotive sensor interfaces, portable battery management circuits, and microcontroller reset supervision.
For engineers reviewing the BZT5250H-C9V1-QX datasheet, BZT5250H-C9V1-QX pinout, BZT5250H-C9V1-QX application, or BZT5250H-C9V1-QX equivalent, this device is selected for its AEC-Q101 qualification, intentional leakage optimization for noise reduction, and suitability in space-constrained SMT designs requiring stable low-current regulation.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal VZ of 9.1 V at IZ = 50 µA, exhibiting a differential resistance of 100 Ω at IZ = 5 mA and a temperature coefficient of +3.8 mV/K. Its low test current enables minimal quiescent current draw in always-on monitoring circuits.
The device features an intentionally elevated leakage current (≤0.1 µA at VR = 7.3 V) to improve switching speed and reduce high-frequency noise-confirmed in Application Note AN90031-and is qualified per AEC-Q101 for automotive underhood and cabin electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V ±5 % at IZ = 50 µA - defines precise clamping threshold for low-bias reference applications |
| Differential Resistance (rdiff) | 100 Ω max at IZ = 5 mA - ensures stable regulation under small load variations |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports reliable forward conduction in dual-direction protection schemes |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - sets thermal design boundary for compact layouts |
| Junction Temperature (Tj) | 150 °C max - enables operation in under-hood automotive environments |
| Reverse Current (IR) | ≤0.1 µA at VR = 7.3 V - optimized leakage supports fast transient response and reduced noise coupling |
| Thermal Resistance (Rth(j-sp)) | 70 K/W - quantifies junction-to-solder-point heat transfer efficiency for thermal relief design |
Pinout & Package
Package: SOD123F - surface-mount plastic package, 2.6 mm × 1.6 mm × 1.1 mm body, flat lead configuration with 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 |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
| Low 50 µA test current | Enables use in ultra-low-power systems such as coin-cell–powered sensors and sleep-mode supervisors |
| Optimized leakage profile | Controlled 0.1 µA max reverse current at 7.3 V improves transient response and reduces broadband noise in analog signal paths |
| SOD123F footprint | Compact 2.6 mm × 1.6 mm outline supports high-density PCB layouts without thermal derating penalties |
| ±5 % VZ tolerance (C-series) | Provides cost-effective regulation accuracy suitable for non-critical reference and overvoltage clamping |
Applications
| Automotive Cabin Sensors | Portable Battery Monitor IC Bias |
|---|---|
|
Use Scenario: Voltage reference for humidity/temperature sensor signal conditioning in HVAC control modules. IC Role / Device Role / Timing Role: Zener regulator providing stable 9.1 V supply to op-amp bias network and ADC reference divider. Use Value: AEC-Q101 qualification ensures long-term stability across -40 °C to +125 °C ambient, while low 50 µA test current minimizes battery drain during vehicle sleep mode. |
Use Scenario: Clamping and reference generation in lithium-ion battery fuel gauge circuits. IC Role / Device Role / Timing Role: Reverse-biased Zener establishes accurate 9.1 V threshold for overvoltage detection and provides clean bias to comparator input stages. Use Value: Optimized leakage current suppresses switching noise that could corrupt low-level cell voltage measurements, improving SOC estimation accuracy. |
| Microcontroller Reset Supervisor | Industrial IoT Edge Node Reference |
|
Use Scenario: Power-on reset circuit for ARM Cortex-M0+ MCU in telematics gateway. IC Role / Device Role / Timing Role: Zener diode holds reset line low until VCC rises above 9.1 V × 0.9 = ~8.2 V, ensuring deterministic boot sequence. Use Value: Tight ±5 % VZ tolerance guarantees consistent reset threshold across production lots, eliminating need for external trimming. |
Use Scenario: Precision voltage reference for isolated RS-485 transceiver bias in smart metering nodes. IC Role / Device Role / Timing Role: Provides stable 9.1 V rail to power isolated DC-DC converter feedback optocoupler and level-shifting logic. Use Value: 100 Ω differential resistance maintains regulation stability despite load transients from communication bursts, preventing false bus faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT5250H-B9V1-Q | Same 9.1 V nominal VZ, but ±2 % tolerance and lower leakage (≤0.05 µA at 7.3 V) | Better accuracy for precision references; slower transient response due to lower leakage | Select when tighter regulation tolerance is required and noise performance is secondary |
| MMSZ5240B-TP | 9.1 V nominal VZ, ±5 %, 500 mW Ptot, SOD-123 package, no AEC-Q101 qualification | Limited to industrial/commercial use; lower power rating requires larger thermal margin | Select for cost-sensitive non-automotive designs where AEC-Q101 compliance is not mandated |
Compared with BZT5250H-C9V1-QX, the BZT5250H-B9V1-Q offers higher accuracy at the expense of noise performance, while MMSZ5240B-TP sacrifices automotive qualification and thermal capability for broader distributor availability and lower unit cost.
Availability
BZT5250H-C9V1-QX is available at Aetrix Electronics and suitable for automotive cabin electronics, portable battery management systems, and industrial edge node reference designs requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BZT5250H-C9V1-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 portfolio, engineered specifically for low-current regulation in automotive and portable electronics where space, power, and noise constraints dominate design priorities.
FAQ
What is the maximum reverse voltage this Zener can regulate before breakdown?
The BZT5250H-C9V1-QX has a nominal Zener voltage of 9.1 V with ±5 % tolerance, meaning it begins regulating between 8.65 V and 9.56 V at 50 µA test current. Its absolute maximum reverse voltage is not defined-operation beyond VZ + margin risks exceeding Ptot or junction temperature limits. The device is intended for controlled breakdown within its specified VZ range.
Can this diode be used in forward-biased applications like ESD protection?
No-BZT5250H-C9V1-QX is optimized for reverse-biased Zener operation. Its forward voltage is 0.9 V max at 10 mA, but it lacks the low dynamic resistance, fast response, and robust surge handling of dedicated TVS or ESD protection diodes. Use only for voltage regulation or clamping in reverse bias; do not substitute for ESD-rated components.
How does the "C" in the part number affect performance versus "B" variants?
The "C" suffix denotes ±5 % VZ tolerance and intentional minor leakage current enhancement (≤0.1 µA at 7.3 V), which improves switching speed and reduces noise in analog signal paths. In contrast, "B" variants offer ±2 % tolerance and lower leakage (≤0.05 µA), prioritizing accuracy over dynamic performance.
Is thermal derating required above 25 °C ambient?
Yes-total power dissipation must be linearly derated above 25 °C ambient. With Rth(j-a) = 330 K/W, the allowable Ptot decreases by approximately 2.52 mW/°C above 25 °C. At 85 °C ambient, maximum dissipation drops to ~678 mW; full derating curves are provided in Section 9 of the Nexperia datasheet Rev. 2.
BZT5250H-C9V1-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):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.9 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-C9V1-QX FAQ
1.How can I place an order for BZT5250H-C9V1-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C9V1-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-C9V1-QX reliable?
The price and inventory of BZT5250H-C9V1-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-C9V1-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C9V1-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C9V1-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C9V1-QX?
BZT5250H-C9V1-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C9V1-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-C9V1-QX?
For technical support, including BZT5250H-C9V1-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C9V1-QX requirements.
6.How does Aetrix verify that BZT5250H-C9V1-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C9V1-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-C9V1-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C9V1-QX?
All BZT5250H-C9V1-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C9V1-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-C9V1-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C9V1-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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