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Nexperia USA Inc. BZT5250H-C5V1-QX
- Part No.:
- BZT5250H-C5V1-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C5V1-QX.pdf
- Description:
- DIODE ZENER 5.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,455
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Product details
Overview
BZT5250H-C5V1-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 5.1 V nominal with ±5 % tolerance, specified at 50 µA test current, and qualified to AEC-Q101 for automotive use in battery-powered sensor biasing and reference circuits.
For engineers reviewing the BZT5250H-C5V1-QX datasheet, BZT5250H-C5V1-QX pinout, BZT5250H-C5V1-QX application, or BZT5250H-C5V1-QX equivalent, this device is selected for low-leakage, low-power voltage clamping in space-constrained automotive ECUs, portable instrumentation, and analog front-end references where stable 5.1 V regulation at microampere bias is required.
Technical Context
This Zener diode operates as a two-terminal shunt voltage regulator with cathode-anode polarity, delivering 5.1 V nominal regulation at IZ = 50 µA (typical), with differential resistance of 500 Ω at 5 mA and temperature coefficient of −2.0 mV/K - enabling predictable drift compensation in temperature-sensitive analog circuits.
Its SOD123F package supports surface-mount reflow assembly on FR4 PCBs with 1 cm² cathode pad, achieving Rth(j-sp) = 150 K/W and total power dissipation up to 830 mW at Tamb ≤ 25 °C, while maintaining reverse leakage < 3.0 µA at VR = 4.0 V per datasheet Table 8.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.1 V ±5 % at IZ = 50 µA - ensures tight regulation in ultra-low-bias applications like CMOS sensor bias rails. |
| Differential Resistance | 500 Ω max at IZ = 5 mA - limits output impedance for stable reference performance under small load variations. |
| Temperature Coefficient | −2.0 mV/K - enables predictable negative drift, simplifying thermal compensation in automotive ambient ranges (−40 °C to +125 °C). |
| Forward Voltage | 0.9 V max at IF = 10 mA - defines low conduction loss when used in forward-biased protection or clamp configurations. |
| Total Power Dissipation | 830 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - supports continuous operation in thermally constrained automotive modules. |
| Junction Temperature | 150 °C max - aligns with AEC-Q101 automotive qualification for under-hood ECU deployment. |
| Reverse Leakage | 3.0 µA max at VR = 4.0 V - guarantees minimal quiescent current draw in always-on battery monitoring circuits. |
Pinout & Package
SOD123F package: surface-mount plastic case, 2.6 mm × 1.6 mm × 1.1 mm body, flat leads, 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 - critical for correct orientation during automated placement. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms shunt path to sink excess current when input exceeds 5.1 V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling - suitable for engine control and ADAS modules. |
| Low test current specification | 50 µA Zener test point - enables stable regulation in micropower systems where supply current must remain below 100 µA. |
| Optimized leakage profile | Intentional minor rise in leakage (per AN90031) - improves switching speed and reduces noise in dynamic reference applications. |
| SOD123F footprint | Standardized 2.6 mm × 1.6 mm land pattern - compatible with high-volume SMT lines and supports IPC-7351B Class L density layouts. |
Applications
| Automotive Cabin Sensor Biasing | Portable Medical Instrument Reference |
|---|---|
|
Use Scenario: Providing stable 5.1 V bias to MEMS pressure and humidity sensors in HVAC control modules. IC Role / Device Role / Timing Role: Shunt Zener regulator establishing precise reference voltage for ADC input scaling and sensor excitation. Use Value: Maintains ±0.255 V regulation window across −40 °C to +125 °C ambient, ensuring <0.5 % full-scale error in sensor output. |
Use Scenario: Supplying low-noise reference for analog front-end amplifiers in handheld pulse oximeters. IC Role / Device Role / Timing Role: Voltage clamp and reference source for op-amp bias networks operating from coin-cell batteries. Use Value: Draws only 50 µA quiescent current, extending battery life beyond 12 months while holding reference stability within ±1 %. |
| Industrial IoT Node Voltage Clamp | Smart Meter Analog Monitoring |
|
Use Scenario: Protecting MCU GPIOs and ADC inputs from transient overvoltage in wireless sensor nodes powered by energy harvesters. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting input voltage to 5.1 V during ESD or surge events. Use Value: Responds within nanoseconds due to low junction capacitance (130 pF), preventing latch-up in 3.3 V microcontrollers. |
Use Scenario: Generating local 5.1 V reference for metrology-grade current sensing amplifiers in electricity meters. IC Role / Device Role / Timing Role: Precision shunt regulator feeding isolated sigma-delta ADC reference inputs. Use Value: Delivers <5 ppm/°C effective TC via matched layout and −2.0 mV/K intrinsic coefficient, meeting IEC 62053-21 Class 0.2 accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B5V1 | Same 5.1 V ±2 % tolerance, SOD323 package (1.7 mm × 1.3 mm), 300 mW Ptot, higher rdiff (600 Ω) | Lower power handling and smaller footprint - suited for ultra-dense consumer wearables but not automotive under-hood use. | Select when board area is critical and thermal margin >200 mW is available; verify AEC-Q101 compliance separately. |
| MMSZ5231B | 5.1 V ±5 %, SOD123 package (same outline but non-flat leads), 500 mW Ptot, rdiff = 17 Ω at 20 mA | Higher test current (20 mA) and lower dynamic impedance - better for moderate-load regulation but incompatible with µA-bias designs. | Choose for higher-current analog references where 50 µA bias is insufficient; confirm solder joint reliability with flat-lead SOD123F requirement. |
Compared with BZX384-B5V1, BZT5250H-C5V1-QX offers 66 % higher power rating and AEC-Q101 assurance; versus MMSZ5231B, it delivers 10× lower bias current operation and optimized leakage for battery longevity - making it the sole choice for AEC-compliant, micropower Zener regulation.
Availability
BZT5250H-C5V1-QX is available at Aetrix Electronics and suitable for automotive cabin electronics, portable medical instrumentation, industrial IoT sensor nodes, and smart meter analog monitoring requiring stable component supply with AEC-Q101 traceability and long-term lifecycle support.
Supply support for BZT5250H-C5V1-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, reliable discrete and logic devices for automotive, industrial, and mobile markets.
BZT5250H-C5V1-QX belongs to the BZT5250H-Q series of low-current Zener diodes engineered specifically for AEC-Q101-compliant voltage regulation in space- and power-constrained automotive and portable electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-C5V1-QX?
The nominal Zener voltage is 5.1 V with ±5 % tolerance, meaning guaranteed breakdown occurs between 4.85 V and 5.36 V at IZ = 50 µA. The absolute maximum non-repetitive peak reverse voltage is not defined - instead, the device is rated for continuous operation up to its specified VZ range under controlled current conditions.
Can BZT5250H-C5V1-QX be used in forward conduction mode?
Yes - its forward voltage is specified at 0.9 V max at 10 mA, making it usable as a low-drop rectifier or clamp in forward bias. However, its primary design intent and characterization are for reverse-biased Zener regulation; forward characteristics are secondary and not optimized for high-current switching.
How does the "C" suffix in BZT5250H-C5V1-QX affect performance?
The "C" denotes the ±5 % tolerance grade and intentional minor leakage current optimization per AN90031 - resulting in faster switching response and reduced noise compared to "B"-grade (±2 %) variants, at the expense of slightly wider voltage spread. This trade-off benefits dynamic reference and clamp applications.
Is thermal derating required above 25 °C ambient?
Yes - total power dissipation must be linearly derated above 25 °C at 6.6 mW/°C (based on 830 mW @ 25 °C and Rth(j-a) = 150 K/W). At 85 °C ambient, maximum allowable Ptot drops to approximately 450 mW to maintain Tj ≤ 150 °C with proper PCB copper area.
BZT5250H-C5V1-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):
- 5.1 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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-C5V1-QX FAQ
1.How can I place an order for BZT5250H-C5V1-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C5V1-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-C5V1-QX reliable?
The price and inventory of BZT5250H-C5V1-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-C5V1-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C5V1-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C5V1-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C5V1-QX?
BZT5250H-C5V1-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C5V1-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-C5V1-QX?
For technical support, including BZT5250H-C5V1-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C5V1-QX requirements.
6.How does Aetrix verify that BZT5250H-C5V1-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C5V1-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-C5V1-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C5V1-QX?
All BZT5250H-C5V1-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C5V1-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-C5V1-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C5V1-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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