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Nexperia USA Inc. BZT5250H-B4V7X
- Part No.:
- BZT5250H-B4V7X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B4V7X.pdf
- Description:
- DIODE ZENER 4.7V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,368
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Product details
Overview
BZT5250H-B4V7X from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 4.7 V nominal with ±2 % tolerance, specified at 50 µA test current, and rated for 830 mW total power dissipation. It serves as a stable reference or clamp in battery-powered sensor interfaces, low-power microcontroller reset circuits, and portable instrumentation signal conditioning.
For engineers reviewing the BZT5250H-B4V7X datasheet, BZT5250H-B4V7X pinout, BZT5250H-B4V7X application, or BZT5250H-B4V7X equivalent, key selection criteria include its low-test-current Zener voltage stability (4.61–4.79 V at IZ = 50 µA), differential resistance of 80 Ω at 5 mA, temperature coefficient of –2.7 mV/K, and suitability for space-constrained SMT designs requiring minimal bias current.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal regulated voltage of 4.7 V, optimized for low-quiescent-current applications where 50 µA test current enables accurate voltage referencing without loading weak sources. Its thermal resistance from junction to solder point is 150 K/W, supporting reliable operation up to 150 °C junction temperature.
The device exhibits a negative temperature coefficient (–2.7 mV/K) and 140 pF capacitance at 0 V, making it suitable for DC biasing and low-frequency stabilization rather than high-speed clamping. The intentional minor leakage rise in the B-series variant improves noise performance and switching transients in analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.61 V to 4.79 V at IZ = 50 µA - tight ±2 % tolerance enables precise low-current reference generation |
| Differential Resistance rdiff | 80 Ω at IZ = 5 mA - low dynamic impedance ensures stable regulation under small load variations |
| Temperature Coefficient SZ | –2.7 mV/K - predictable voltage drift supports thermal compensation in ambient-varying environments |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - low conduction loss when used in series protection or polarity-sensitive bias paths |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - defines maximum continuous DC power handling in standard layout |
| Reverse Current IR | ≤ 5.0 µA at VR = 3.0 V - low leakage preserves battery life in always-on monitoring circuits |
| Diode Capacitance Cd | 140 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in sensitive analog signal paths |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile, 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 - reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for voltage reference function |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | Rated at 50 µA - enables use in ultra-low-power systems where bias current must be minimized |
| Tight voltage tolerance | ±2 % (B-series) - reduces need for post-production trimming in precision reference designs |
| Optimized leakage behavior | Intentional minor IR rise per AN90031 - lowers broadband noise and improves transient response in analog sensing |
| Thermal robustness | 150 °C max junction temperature - supports operation in industrial and automotive-adjacent environments |
| Standardized SMT footprint | SOD123F outline with IPC-compliant reflow land pattern - ensures manufacturability across high-volume assembly lines |
Applications
| Portable Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 4.7 V reference to analog sensor ICs (e.g., temperature, humidity) in coin-cell-powered IoT nodes. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed bias point for sensor excitation and ADC reference scaling. Use Value: 50 µA test current draws negligible current from 220 mAh CR2032 cell, extending operational life beyond 10 years in sleep-dominated duty cycles. |
Use Scenario: Generating clean, temperature-stable reset threshold for ARM Cortex-M0+ MCUs in battery-backed data loggers. IC Role / Device Role / Timing Role: Precision shunt regulator defining logic-high reset release voltage (4.7 V ±2 %) independent of supply rail variation. Use Value: –2.7 mV/K temperature coefficient minimizes reset voltage drift across –40 °C to +85 °C, preventing spurious resets. |
| Low-Power Signal Clamping | Reference Voltage Divider Stabilization |
Use Scenario: Protecting ADC input pins from overvoltage transients in handheld medical diagnostic devices. IC Role / Device Role / Timing Role: Low-capacitance (140 pF) shunt clamp limiting analog input to 4.7 V while preserving signal integrity below threshold. Use Value: 80 Ω differential resistance ensures clamping voltage remains within 50 mV of nominal during 1 mA fault currents. |
Use Scenario: Stabilizing mid-rail voltage in single-supply op-amp circuits using resistor divider + Zener topology. IC Role / Device Role / Timing Role: Active voltage reference anchoring virtual ground at exactly half VCC, compensating for resistor tolerance drift. Use Value: 830 mW power rating allows sustained operation at 4.7 V with >10 mA divider current, reducing sensitivity to resistor aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5225BS-7-F | Same 4.7 V nominal, ±5 % tolerance, SOD-123 package, but rated at 200 mW Ptot and 300 Ω rdiff at 20 mA | Higher power derating required above 60 °C ambient; less stable under varying load due to higher dynamic impedance | Select when cost sensitivity outweighs precision and thermal stability requirements |
| Vishay BZX84-C4V7 | 4.7 V ±5 %, SOT-23 package, 350 mW Ptot, 90 Ω rdiff at 5 mA, but no low-current (50 µA) VZ spec | Larger footprint and higher thermal resistance (Rth(j-a) ≈ 350 K/W) limit use in thermally constrained layouts | Prefer for legacy SOT-23 board compatibility where 50 µA test current is not critical |
Compared with MMBZ5225BS-7-F and BZX84-C4V7, the BZT5250H-B4V7X delivers tighter voltage tolerance, lower test-current dependency, and superior thermal performance in SOD123F - making it optimal for next-generation ultra-low-power, high-accuracy analog subsystems.
Availability
BZT5250H-B4V7X is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset circuits, low-power signal clamping, and reference voltage divider stabilization requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BZT5250H-B4V7X 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, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and sustainability.
The BZT5250H series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-powered and space-constrained applications demanding stable voltage references at microampere bias levels.
FAQ
What is the guaranteed Zener voltage range for BZT5250H-B4V7X at 50 µA test current?
The guaranteed Zener voltage is 4.61 V minimum to 4.79 V maximum at IZ = 50 µA and Tj = 25 °C, reflecting its ±2 % tolerance grade. This range is validated per Nexperia's Product Data Sheet Rev. 1 (18 July 2024), Table 8, and applies under specified thermal mounting conditions on FR4 PCB with cathode pad area.
Can BZT5250H-B4V7X be used in place of a 5.1 V Zener diode?
No - BZT5250H-B4V7X is strictly a 4.7 V device with no 5.1 V variant in the B-series. For 5.1 V regulation, the correct part is BZT5250H-B5V1 (4.99–5.20 V at 50 µA). Substituting across voltage grades risks incorrect biasing, unstable reset thresholds, or insufficient clamping margin in circuit operation.
Is the SOD123F package compatible with standard reflow soldering profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method for SOD123F. The device complies with JEDEC J-STD-020 moisture sensitivity level (MSL) 1 and supports peak temperatures up to 260 °C. Footprint dimensions and solder paste recommendations are provided in Figure 10 of the datasheet for reliable automated assembly.
Does BZT5250H-B4V7X have automotive qualification?
No - the BZT5250H-B4V7X is not AEC-Q200 qualified. Nexperia explicitly states in Section 14 ("Legal information") that unless the data sheet expressly declares automotive qualification, the product is unsuitable for automotive use. It is intended for industrial, consumer, and computing applications only.
BZT5250H-B4V7X 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):
- 4.7 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 80 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-B4V7X FAQ
1.How can I place an order for BZT5250H-B4V7X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B4V7X 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-B4V7X reliable?
The price and inventory of BZT5250H-B4V7X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B4V7X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B4V7X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B4V7X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B4V7X?
BZT5250H-B4V7X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B4V7X 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-B4V7X?
For technical support, including BZT5250H-B4V7X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B4V7X requirements.
6.How does Aetrix verify that BZT5250H-B4V7X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B4V7X 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-B4V7X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B4V7X?
All BZT5250H-B4V7X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B4V7X, 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-B4V7X part is unused and in its original packaging.
Return procedure for BZT5250H-B4V7X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B4V7X Tags
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