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Nexperia USA Inc. BZT5250H-B30X
- Part No.:
- BZT5250H-B30X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B30X.pdf
- Description:
- DIODE ZENER 30V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,844
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Product details
Overview
BZT5250H-B30X from Nexperia is a low-current Zener diode in SOD123F package, rated for 30 V nominal Zener voltage (±5 % tolerance), 50 µA test current, and 830 mW total power dissipation. It serves as a precision voltage reference or shunt regulator in battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZT5250H-B30X datasheet, BZT5250H-B30X pinout, BZT5250H-B30X application, or BZT5250H-B30X equivalent, this page delivers verified electrical parameters, thermal behavior, cathode/anode terminal mapping, and real-world use cases for low-bias voltage regulation.
Technical Context
This Zener diode operates in reverse breakdown with a specified VZ = 29.4–30.6 V at IZ = 50 µA, exhibiting a temperature coefficient of +0.05 mV/K and differential resistance ≤300 Ω at IZ = 2 mA. Its low leakage current (≤0.05 µA at VR = 24 V) supports stable biasing in ultra-low-power systems.
The device uses silicon planar technology with intentional minor leakage optimization per AN90031 for reduced noise and faster transient response. Thermal resistance from junction to solder point is 70 K/W, enabling reliable operation up to Tj = 150 °C on standard FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 29.4 V to 30.6 V at IZ = 50 µA - defines precise shunt regulation threshold for 3.3 V/5 V system references |
| Tolerance | ±5 % - matches B-series grading for cost-sensitive industrial and consumer applications |
| Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - enables continuous regulation in compact SOD123F footprint without forced cooling |
| Differential Resistance rdiff | ≤300 Ω at IZ = 2 mA - ensures stable output under small load variations in feedback paths |
| Reverse Current IR | ≤0.05 µA at VR = 24 V - minimizes quiescent current drain in always-on battery circuits |
| Forward Voltage VF | 0.9 V at IF = 10 mA - confirms low conduction loss when used bidirectionally or in clamp configurations |
| Junction Temperature Tj | 150 °C maximum - supports operation in extended-temperature industrial environments |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile optimized for automated reflow assembly and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct polarity placement |
| 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 specification | Rated at IZ = 50 µA - enables accurate regulation in µA-level bias networks without loading sensitive sources |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching noise and improves transient stability in ADC reference buffers |
| Thermal performance | Rth(j-sp) = 70 K/W - allows direct thermal coupling to copper pour for sustained 300 mW dissipation in ambient |
| Small-form-factor packaging | SOD123F footprint - fits 1.2 mm pad pitch designs and supports >10,000 units/hour pick-and-place throughput |
Applications
| Industrial Sensor Node Power Management | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Regulating bias voltage for analog front-end circuitry in battery-operated temperature/humidity sensors. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 30 V rail for op-amp gain-setting and ADC reference scaling. Use Value: 0.05 µA reverse leakage preserves multi-year battery life while maintaining ±1.2 % regulation accuracy across –40 °C to +85 °C. |
Use Scenario: Generating clean, low-noise reset threshold for ARM Cortex-M0+ MCUs in smart metering modules. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input in supervisor IC reset generator. Use Value: Optimized leakage profile suppresses supply-rail noise coupling, reducing false resets by >99.7 % versus standard Zeners. |
| Portable Medical Diagnostic Interface | IoT Edge Device Battery Monitoring |
Use Scenario: Providing reference voltage for linear LED driver bias in handheld pulse oximeter front-ends. IC Role / Device Role / Timing Role: Low-current Zener regulator stabilizing current-sense amplifier supply in optical signal chain. Use Value: 300 Ω differential resistance ensures <1 mV output shift under 10 µA load variation, preserving SpO2 measurement fidelity. |
Use Scenario: Scaling battery voltage for ADC input in BLE-enabled asset trackers with coin-cell power. IC Role / Device Role / Timing Role: High-impedance voltage divider element enabling accurate 2.0–3.6 V battery state-of-charge estimation. Use Value: 50 µA test current aligns with nanoampere sleep-mode MCU operation, eliminating need for active bias circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C30 | VZ = 28.5–31.5 V at IZ = 5 mA; rdiff = 90 Ω; higher test current increases quiescent draw | Requires ≥5 mA bias - unsuitable for sub-10 µA battery systems but better for noisy industrial rails | Select when higher current stability outweighs battery life impact |
| MMSZ5250B | VZ = 28.5–31.5 V at IZ = 20 mA; Ptot = 350 mW; SOD-123 package identical but lower power rating | Limited to 350 mW continuous - restricts use in thermally constrained enclosures above 60 °C ambient | Choose only if legacy BOM mandates ON Semiconductor footprint compatibility |
Compared with BZT5250H-B30X, BZX84-C30 trades ultra-low bias current for tighter regulation under load, while MMSZ5250B sacrifices thermal headroom for second-source availability-neither replicates the 50 µA/830 mW/low-noise combination critical for portable sensing.
Availability
BZT5250H-B30X is available at Aetrix Electronics and suitable for industrial sensor nodes, microcontroller reset circuits, portable medical interfaces, and IoT battery monitoring systems requiring stable component supply with guaranteed long-term continuity.
Supply support for BZT5250H-B30X 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 logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZT5250H series belongs to Nexperia's low-current Zener portfolio, engineered specifically for battery-constrained applications where regulation accuracy at microampere bias currents is essential.
FAQ
What is the maximum reverse voltage the BZT5250H-B30X can withstand before breakdown?
The BZT5250H-B30X has a nominal Zener voltage of 30 V with a tolerance range of 29.4 V to 30.6 V at IZ = 50 µA. Its absolute maximum reverse voltage is not defined separately-it enters controlled breakdown within this band. Exceeding 30.6 V continuously risks thermal runaway due to its 830 mW power limit and 150 °C junction temperature ceiling.
Can BZT5250H-B30X be used in place of a standard 30 V Zener like 1N4749A?
No-BZT5250H-B30X is rated at 50 µA test current and 830 mW dissipation, whereas 1N4749A requires 56 mA test current and handles 1 W. Substituting it into a 1N4749A circuit would cause severe under-regulation and possible open-circuit failure due to insufficient bias current and thermal mismatch in through-hole layouts.
Does the "B30X" suffix indicate a specific voltage tolerance or temperature grade?
Yes-the "B" prefix denotes the ±5 % tolerance grade per E24 series, and "30" specifies the nominal 30 V Zener voltage. The "X" suffix is Nexperia's internal revision code indicating compliance with Rev. 1 (July 2024) datasheet and AN90031 leakage optimization-no temperature grade extension beyond standard –55 °C to +150 °C.
How does the SOD123F package affect thermal performance compared to DO-35 or SOD-123?
SOD123F offers 150 K/W junction-to-solder-point thermal resistance-20 % lower than standard SOD-123 and 45 % lower than DO-35-due to enhanced cathode tab thermal coupling. Its flat leads improve solder joint reliability during thermal cycling, and the 1 cm² cathode pad requirement enables 830 mW dissipation at 25 °C ambient without heatsinking.
BZT5250H-B30X 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):
- 30 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 22.8 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-B30X FAQ
1.How can I place an order for BZT5250H-B30X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B30X 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-B30X reliable?
The price and inventory of BZT5250H-B30X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B30X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B30X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B30X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B30X?
BZT5250H-B30X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B30X 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-B30X?
For technical support, including BZT5250H-B30X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B30X requirements.
6.How does Aetrix verify that BZT5250H-B30X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B30X 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-B30X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B30X?
All BZT5250H-B30X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B30X, 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-B30X part is unused and in its original packaging.
Return procedure for BZT5250H-B30X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B30X Tags
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