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Nexperia USA Inc. BZT5250H-C3V9X
- Part No.:
- BZT5250H-C3V9X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C3V9X.pdf
- Description:
- DIODE ZENER 3.9V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:4,561
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Product details
Overview
BZT5250H-C3V9X from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 3.9 V nominal with ±5 % tolerance, 600 Ω differential resistance at IZ = 50 µA, and specified leakage current optimized for noise-sensitive portable applications.
For engineers reviewing the BZT5250H-C3V9X datasheet, BZT5250H-C3V9X pinout, BZT5250H-C3V9X application, or BZT5250H-C3V9X equivalent, this device serves as a stable 3.9 V reference in low-power bias networks, battery monitoring circuits, and ESD-protected signal clamping where low test current (50 µA) and controlled temperature coefficient (−2.7 mV/K) are critical.
Technical Context
This Zener operates in reverse breakdown mode with a nominal working voltage of 3.9 V at IZ = 50 µA, exhibiting a typical differential resistance of 600 Ω at that current and dropping to 95 Ω at IZ = 5 mA. Its temperature coefficient is −2.7 mV/K, ensuring predictable drift over temperature in reference circuits.
The device features intentionally elevated leakage current per AN90031 to improve switching speed and reduce noise in low-current regulation paths. It is rated for 830 mW total power dissipation on a 1 cm² cathode pad and supports ambient temperatures from −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.9 V at IZ = 50 µA - defines precise regulation point for low-bias reference design |
| Tolerance | ±5 % - matches C-suffix series for cost-optimized general-purpose regulation |
| Differential Resistance | 600 Ω at IZ = 50 µA - ensures stable voltage under light-load variation |
| Temperature Coefficient | −2.7 mV/K - enables predictable thermal drift compensation in analog references |
| Forward Voltage | 0.9 V at IF = 10 mA - supports bidirectional clamping and polarity-aware protection |
| Total Power Dissipation | 830 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - sets thermal derating baseline for PCB layout |
| Junction Temperature Limit | 150 °C - constrains maximum operating junction temperature in sealed or high-ambient environments |
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 for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | 50 µA - enables use in microamp-level bias networks without loading sensitive sources |
| Optimized leakage profile | Intentionally elevated IR per AN90031 - reduces switching transients and broadband noise in clamping paths |
| Thermal performance | Rth(j-sp) = 150 K/W - supports reliable operation with standard FR4 PCB copper pads |
| Small-form-factor SMD | SOD123F footprint - fits high-density layouts while maintaining manufacturability and reflow compatibility |
Applications
| Portable Battery Monitoring | Low-Power Sensor Biasing |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in wearables using ultra-low-quiescent current ADC front-end. IC Role / Device Role / Timing Role: Provides stable 3.9 V reference for ADC VREF input and overvoltage clamp for input protection. Use Value: Enables accurate sub-10 mV measurement resolution with <1 µA standby current draw from the Zener's 50 µA test condition. |
Use Scenario: Supplying bias voltage to MEMS pressure sensor in IoT node with coin-cell power source. IC Role / Device Role / Timing Role: Acts as low-current shunt regulator delivering clean 3.9 V to sensor analog core. Use Value: Maintains regulation stability across −40 °C to +85 °C due to −2.7 mV/K temperature coefficient and low rdiff. |
| ESD-Sensitive Signal Clamping | Microcontroller Reset Circuitry |
Use Scenario: Protecting UART TX/RX lines in industrial controller against ±8 kV HBM ESD events. IC Role / Device Role / Timing Role: Functions as bidirectional transient voltage suppressor with fast turn-on via optimized leakage. Use Value: Reduces clamping overshoot by >30 % compared to standard Zeners due to intentional leakage rise per AN90031. |
Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ MCU in energy-harvesting system. IC Role / Device Role / Timing Role: Sets 3.9 V brown-out detection level in RC-based reset generator. Use Value: Ensures monotonic reset assertion across supply ramp-up with minimal hysteresis from tight ±5 % tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C3V9 | Same 3.9 V ±5 % rating but in SOD323 package; 400 Ω rdiff at 5 mA; no intentional leakage optimization | Larger package footprint; higher rdiff at low current; less effective for noise-critical clamping | Select when board space allows larger SOD323 and noise reduction is secondary to cost |
| MMSZ4685 | 3.9 V ±5 % in SOD123; 100 Ω rdiff at 5 mA; 500 mW Ptot; no AN90031 leakage tuning | Higher power capability but lacks low-current noise suppression; wider thermal resistance spread | Prefer for higher-current regulation (>1 mA) where thermal margin outweighs low-noise priority |
Compared with BZT5250H-C3V9X, BZX584-C3V9 offers smaller size but weaker low-current noise control, while MMSZ4685 delivers better high-current regulation but sacrifices the 50 µA-optimized leakage behavior essential for portable signal integrity.
Availability
BZT5250H-C3V9X is available at Aetrix Electronics and suitable for portable battery monitoring, low-power sensor biasing, ESD-sensitive signal clamping, and microcontroller reset circuitry requiring stable component supply across industrial and consumer production volumes.
Supply support for BZT5250H-C3V9X 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, headquartered in Nijmegen, Netherlands.
The BZT5250H series belongs to Nexperia's low-current Zener portfolio, engineered specifically for precision voltage reference and noise-aware clamping in battery-constrained and signal-integrity-critical applications.
FAQ
What is the maximum reverse current (IR) for BZT5250H-C3V9X at 3.0 V?
At VR = 3.0 V and Tamb = 25 °C, the typical reverse current is 2.0 µA, with a maximum of 2.5 µA per Table 8. This low leakage ensures minimal parasitic loading in high-impedance bias networks and supports accurate low-voltage threshold detection.
Can BZT5250H-C3V9X be used in series for higher voltage regulation?
No - the BZT5250H-C3V9X is not characterized or guaranteed for series operation. Its differential resistance and temperature coefficient are specified only for single-device use at 3.9 V. Series stacking introduces mismatched thermal drift and uncontrolled current sharing, risking regulation instability.
Is the SOD123F package compatible with standard reflow profiles?
Yes - the SOD123F package is qualified for lead-free reflow soldering per J-STD-020. The recommended profile uses peak temperature ≤ 260 °C, time above liquidus 60–150 s, and ramp rates within IPC/JEDEC limits. Figure 10 provides the exact solder land pattern for process reliability.
How does the "C" suffix differ from "B" in the BZT5250H series?
The "C" suffix denotes ±5 % tolerance and intentional minor leakage current rise per AN90031 for faster switching and lower noise. The "B" suffix indicates ±2 % tolerance and standard leakage - tighter voltage accuracy but less optimized for dynamic signal integrity in clamping roles.
BZT5250H-C3V9X 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):
- 3.9 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 2 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-C3V9X FAQ
1.How can I place an order for BZT5250H-C3V9X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C3V9X 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-C3V9X reliable?
The price and inventory of BZT5250H-C3V9X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C3V9X is usually 5 days.
3.What payment methods are accepted for BZT5250H-C3V9X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C3V9X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C3V9X?
BZT5250H-C3V9X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C3V9X 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-C3V9X?
For technical support, including BZT5250H-C3V9X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C3V9X requirements.
6.How does Aetrix verify that BZT5250H-C3V9X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C3V9X 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-C3V9X meets industry standards.
7.What is the process for return or replacement of BZT5250H-C3V9X?
All BZT5250H-C3V9X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C3V9X, 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-C3V9X part is unused and in its original packaging.
Return procedure for BZT5250H-C3V9X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-C3V9X Tags
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