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Nexperia USA Inc. BZT5250H-B5V1X
- Part No.:
- BZT5250H-B5V1X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B5V1X.pdf
- Description:
- DIODE ZENER 5.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,117
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Product details
Overview
BZT5250H-B5V1X from Nexperia is a low-current Zener diode in SOD123F package, providing 5.1 V ±2 % nominal regulation at 50 µA test current, with 500 Ω differential resistance at 5 mA and 3.0 µA reverse leakage at 3.7 V, used for precision voltage reference and biasing in portable battery-powered sensor nodes.
For engineers reviewing the BZT5250H-B5V1X datasheet, BZT5250H-B5V1X pinout, BZT5250H-B5V1X application, or BZT5250H-B5V1X equivalent, this page delivers verified electrical characteristics, thermal performance under PCB-mount conditions, SOD123F footprint compliance, and direct comparison to functionally aligned Zener alternatives.
Technical Context
This Zener operates in reverse breakdown with specified regulation at low test current (50 µA), enabling stable reference generation in ultra-low-power circuits where quiescent current must remain below 100 µA. Its 500 Ω dynamic impedance at 5 mA ensures predictable voltage deviation under small-signal load variations.
The device exhibits a temperature coefficient of −2.0 mV/K and junction-to-ambient thermal resistance of 330 K/W on FR4 PCB, making it suitable for ambient-stable bias networks in industrial temperature ranges (−55 °C to +150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.00 V to 5.20 V at IZ = 50 µA - tight ±2 % tolerance enables accurate 5.1 V reference without trimming |
| Differential Resistance (rdiff) | 500 Ω at IZ = 5 mA - defines voltage shift per 1 mA load change in regulation loop |
| Reverse Leakage (IR) | 3.0 µA max at VR = 3.7 V - ensures minimal parasitic current in standby mode |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports use as polarity-sensitive clamp or protection element |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on 1 cm² cathode pad - sets maximum continuous power in thermally constrained layouts |
| Junction Temperature (Tj) | 150 °C max - defines upper thermal limit for reliability in sealed enclosures |
| Package | SOD123F - 2.6 mm × 1.6 mm × 1.1 mm surface-mount outline with standardized reflow footprint |
Pinout & Package
SOD123F is a 2-pin surface-mount plastic package with cathode marked by a bar on the body. Mounting requires tin-plated single-sided FR4 PCB with 1 cm² copper pad under cathode for rated 830 mW dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse-bias current during regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | 50 µA - enables stable regulation in microamp-level bias networks without loading source |
| Tight voltage tolerance | ±2 % (B-series) - reduces need for post-layout calibration in precision analog front-ends |
| Optimized leakage profile | Controlled 3.0 µA IR at 3.7 V - balances noise suppression and standby power in always-on sensors |
| Thermally robust mounting | 150 °C max Tj with 330 K/W Rth(j-a) - supports operation in unventilated industrial control modules |
Applications
| Portable Sensor Biasing | Low-Power ADC Reference |
|---|---|
Use Scenario: Providing stable 5.1 V reference for MEMS pressure sensor signal conditioning in coin-cell–powered IoT nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed reference voltage for op-amp bias and ADC input scaling. Use Value: 5.00–5.20 V regulation at 50 µA ensures <10 ppm/°C drift contribution and <1 µA total quiescent draw from supply. |
Use Scenario: Supplying reference voltage to 12-bit SAR ADC in battery-operated environmental monitor with 10-year shelf life. IC Role / Device Role / Timing Role: Precision shunt regulator establishing VREF independent of supply rail variation between 3.0 V and 4.2 V. Use Value: 500 Ω rdiff limits reference error to <0.5 LSB across 0–1 mA ADC reference current range. |
| Microcontroller Reset Circuit | ESD-Sensitive Interface Clamp |
Use Scenario: Generating threshold voltage for RC-based reset generator in ultra-low-power MCU subsystems. IC Role / Device Role / Timing Role: Zener clamping resistor divider output to define precise 4.5 V reset release point. Use Value: ±2 % VZ tolerance eliminates need for external trim pot, reducing BOM count and layout area. |
Use Scenario: Protecting UART TX/RX lines in medical wearable against 8 kV HBM ESD while preserving signal integrity. IC Role / Device Role / Timing Role: Low-capacitance (130 pF) shunt clamp limiting line voltage to 5.1 V during transient events. Use Value: 130 pF capacitance at 0 V ensures <0.5 ns rise-time degradation on 1 Mbps UART signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F | 5.1 V ±5 %, 600 Ω rdiff, 10 µA IR at 3.7 V, SOT-23 package | Higher leakage and looser tolerance; larger footprint increases board area by 40 % | Select when cost sensitivity outweighs precision and space constraints |
| BZX384-B5V1 | 5.1 V ±2 %, 600 Ω rdiff, 2.0 µA IR at 3.7 V, SOD-323 package | Lower leakage but 30 % smaller pad area limits power handling to 300 mW | Select only for sub-100 mW regulation where thermal margin is non-critical |
Compared with MMBZ5221BS-7-F and BZX384-B5V1, BZT5250H-B5V1X delivers tighter tolerance, lower leakage, and higher power capability in the same SOD123F footprint-making it optimal for space-constrained, battery-limited designs requiring long-term voltage stability.
Availability
BZT5250H-B5V1X is available at Aetrix Electronics and suitable for portable sensor biasing, low-power ADC reference, and microcontroller reset circuitry requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZT5250H-B5V1X 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 delivering high-performance logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial and consumer electronics.
BZT5250H-B5V1X belongs to the BZT5250H series of low-current Zener diodes engineered specifically for ultra-low-power voltage reference and biasing in battery-operated and energy-harvesting systems.
FAQ
What is the maximum continuous power dissipation for BZT5250H-B5V1X on standard FR4 PCB?
The maximum continuous power dissipation is 830 mW at ambient temperature ≤25 °C when mounted on an FR4 PCB with a 1 cm² tin-plated copper pad under the cathode terminal. Derating is required above 25 °C at 8.3 mW/°C based on 330 K/W junction-to-ambient thermal resistance.
Does BZT5250H-B5V1X meet automotive AEC-Q200 requirements?
No. BZT5250H-B5V1X is not automotive-qualified and has not undergone AEC-Q200 stress testing. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products are unsuitable for safety-critical or automotive applications unless separately validated by the customer.
How does the 50 µA test current affect circuit design?
The 50 µA test current means the diode achieves its specified 5.1 V regulation point only when biased at that exact current. Designers must ensure the series resistor delivers ~50 µA under minimum supply voltage to maintain accuracy; deviation causes measurable VZ shift due to the 500 Ω dynamic impedance.
Can BZT5250H-B5V1X be used in forward conduction mode?
Yes. With forward voltage ≤0.9 V at 10 mA, it functions as a low-drop silicon diode for polarity protection or basic rectification in low-current paths (<200 mA peak), though its primary design intent and characterization are for reverse-bias Zener regulation.
BZT5250H-B5V1X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT5250H
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±2%
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-B5V1X FAQ
1.How can I place an order for BZT5250H-B5V1X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B5V1X 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-B5V1X reliable?
The price and inventory of BZT5250H-B5V1X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B5V1X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B5V1X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B5V1X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B5V1X?
BZT5250H-B5V1X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B5V1X 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-B5V1X?
For technical support, including BZT5250H-B5V1X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B5V1X requirements.
6.How does Aetrix verify that BZT5250H-B5V1X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B5V1X 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-B5V1X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B5V1X?
All BZT5250H-B5V1X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B5V1X, 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-B5V1X part is unused and in its original packaging.
Return procedure for BZT5250H-B5V1X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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