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Nexperia USA Inc. BZT5250H-B2V4-QX
- Part No.:
- BZT5250H-B2V4-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B2V4-QX.pdf
- Description:
- DIODE ZENER 2.4V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:4,782
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Product details
Overview
BZT5250H-B2V4-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 2.4 V nominal with ±2 % tolerance. It delivers stable reference voltage at 50 µA test current, features 600 Ω differential resistance at 5 mA, and supports automotive-grade operation per AEC-Q101. It is used in battery-powered sensor biasing and low-power microcontroller reset circuits.
For engineers reviewing the BZT5250H-B2V4-QX datasheet, BZT5250H-B2V4-QX pinout, BZT5250H-B2V4-QX application, or BZT5250H-B2V4-QX equivalent, this page provides verified Zener voltage, thermal resistance (150 K/W junction-to-solder point), leakage behavior, AEC-Q101 qualification status, and SOD123F footprint compatibility for PCB layout and automotive design validation.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 2.4 V at IZ = 50 µA, exhibiting a temperature coefficient of −3.5 mV/K and 200 pF capacitance at 0 V. Its low test current enables minimal quiescent power draw in always-on monitoring circuits.
The device uses silicon planar technology with intentional minor leakage optimization for fast switching and noise reduction per AN90031. It achieves 830 mW total power dissipation on FR4 PCB with 1 cm² cathode pad and withstands non-repetitive 40 W surge pulses (100 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.35 V to 2.45 V at IZ = 50 µA - tight ±2 % tolerance ensures accurate low-voltage reference in 3.3 V or 2.5 V rail monitoring. |
| Differential Resistance (rdiff) | 600 Ω max at IZ = 5 mA - defines regulation stiffness under small load variations in precision analog sensing. |
| Reverse Current (IR) | 2.0 µA max at VR = 1.0 V - ultra-low leakage preserves battery life in portable IoT node power domains. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - enables use as clamping diode in bidirectional signal protection paths. |
| Thermal Resistance (Rth(j-sp)) | 150 K/W - quantifies junction-to-solder-point heat transfer efficiency for thermal relief design on standard FR4. |
| Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on recommended PCB layout. |
| AEC-Q101 Qualified | Yes - validated for automotive under-hood and infotainment applications requiring discrete semiconductor reliability. |
Pinout & Package
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; carries reverse breakdown current during regulation. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path enabling Zener conduction at VZ. |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current Zener operation | Specified at 50 µA - minimizes standby current in battery-critical applications like wearables and remote sensors. |
| Automotive qualification | AEC-Q101 compliant - guarantees reliability across −40 °C to +125 °C ambient, including thermal cycling and humidity exposure. |
| Optimized leakage profile | Intentional minor rise in IR per AN90031 - reduces switching noise and improves transient response in feedback loops. |
| Small-form-factor SMD | SOD123F footprint - occupies only 4.16 mm² board area, compatible with high-density routing in compact ECUs and modules. |
| Tight voltage tolerance | ±2 % (B-series) - eliminates need for post-assembly trimming in factory-calibrated voltage references. |
Applications
| Automotive Cabin Sensors | Industrial Temperature Transducers |
|---|---|
Use Scenario: Voltage reference for thermistor-based cabin temperature sensing in HVAC control modules. IC Role / Device Role / Timing Role: Zener regulator providing stable 2.4 V bias to ADC input stage and Wheatstone bridge excitation. Use Value: ±2 % VZ tolerance ensures <±0.5 °C measurement accuracy over full automotive temperature range without software calibration. |
Use Scenario: Reference source for RTD interface circuitry in programmable logic controller (PLC) analog input cards. IC Role / Device Role / Timing Role: Low-drift Zener supplying excitation current to 100 Ω Pt100 sensor via constant-current mirror. Use Value: −3.5 mV/K temperature coefficient enables predictable compensation in firmware, reducing hardware trimming components. |
| Portable Medical Pulse Oximeters | Smart Home Smoke Detectors |
Use Scenario: Bias voltage generator for red/IR LED drivers in battery-powered pulse oximetry modules. IC Role / Device Role / Timing Role: Low-quiescent Zener regulating LED current-setting reference to maintain consistent optical output intensity. Use Value: 2.0 µA max IR at 1.0 V extends coin-cell battery life beyond 12 months in standby mode. |
Use Scenario: Stable supply rail for electrochemical CO sensor amplifier and microcontroller reset circuit. IC Role / Device Role / Timing Role: Zener clamp protecting MCU VDD from transient overvoltage during alarm siren activation. Use Value: 830 mW Ptot rating allows safe energy absorption during 100 µs ESD events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C2V4 | ±5 % tolerance, higher rdiff (750 Ω), no AEC-Q101 qualification | Acceptable for consumer-grade power rails where cost outweighs precision and reliability | Select when budget constraints preclude automotive-grade parts and ±5 % VZ drift is acceptable. |
| MMSZ4676T1G | 2.4 V nominal, ±5 %, 500 mW Ptot, SOD-123 package (not SOD123F), Rth(j-a) = 330 K/W | Limited thermal performance on FR4; unsuitable for sustained >150 mW dissipation in confined layouts | Choose only if legacy footprint compatibility with older SOD-123 (not SOD123F) is required and power is strictly <100 mW. |
Compared with BZT5250H-B2V4-QX, BZT52-C2V4 trades precision and automotive reliability for lower cost, while MMSZ4676T1G sacrifices thermal robustness and qualification for broader distributor availability-neither matches the 2.4 V ±2 % + AEC-Q101 + 830 mW combination.
Availability
BZT5250H-B2V4-QX is available at Aetrix Electronics and suitable for automotive cabin electronics, industrial sensor interfaces, portable medical devices, and smart home safety systems requiring stable component supply with traceable automotive-grade sourcing.
Supply support for BZT5250H-B2V4-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, low-noise voltage reference and regulation in automotive and industrial edge-sensing applications.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-B2V4-QX?
The nominal Zener voltage is 2.4 V with a guaranteed range of 2.35 V to 2.45 V at 50 µA test current. Breakdown begins within this band; operation below 2.35 V ensures non-conductive state with ≤2.0 µA leakage at 1.0 V reverse bias. Exceeding 2.45 V initiates controlled regulation.
Can BZT5250H-B2V4-QX be used in forward-bias applications?
Yes-it exhibits 0.9 V max forward voltage at 10 mA, making it suitable as a low-drop clamping diode in signal lines or ESD protection networks. However, its primary design intent and characterization are for reverse-bias Zener regulation, not rectification or switching.
How does the SOD123F package differ from standard SOD-123 in layout?
SOD123F has a flatter profile (1.1 mm height vs. 1.3 mm) and optimized thermal pad geometry: cathode pad is extended to 1 cm² for improved heat transfer, and solder land dimensions are specified as 2.1 mm × 1.2 mm per terminal. Standard SOD-123 footprints may cause solder joint stress or thermal derating.
Is the −3.5 mV/K temperature coefficient linear across the full operating range?
Yes-the coefficient is specified as typical and linear from −40 °C to +125 °C per datasheet Section 10, Table 8. This enables first-order temperature compensation in analog front-ends without lookup tables, provided ambient gradients remain within AEC-Q101 limits.
BZT5250H-B2V4-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):
- 2.4 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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-B2V4-QX FAQ
1.How can I place an order for BZT5250H-B2V4-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B2V4-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-B2V4-QX reliable?
The price and inventory of BZT5250H-B2V4-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-B2V4-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B2V4-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B2V4-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B2V4-QX?
BZT5250H-B2V4-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B2V4-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-B2V4-QX?
For technical support, including BZT5250H-B2V4-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B2V4-QX requirements.
6.How does Aetrix verify that BZT5250H-B2V4-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B2V4-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-B2V4-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B2V4-QX?
All BZT5250H-B2V4-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B2V4-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-B2V4-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B2V4-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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