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Nexperia USA Inc. BZT5250H-B9V1X
- Part No.:
- BZT5250H-B9V1X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B9V1X.pdf
- Description:
- DIODE ZENER 9.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,077
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Product details
Overview
BZT5250H-B9V1X from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 9.1 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-B9V1X datasheet, BZT5250H-B9V1X pinout, BZT5250H-B9V1X application, or BZT5250H-B9V1X equivalent, this page delivers verified electrical parameters, thermal resistance values, differential resistance at multiple test currents, temperature coefficient, and real-world mounting guidance for FR4 PCBs with tin-plated copper.
Technical Context
This Zener diode operates in reverse breakdown with a nominal 9.1 V regulation voltage at IZ = 50 µA, exhibiting a typical differential resistance of 100 Ω at IZ = 1 mA and 15 Ω at IZ = 5 mA. Its temperature coefficient is +3.8 mV/K, indicating positive drift over temperature - critical for bias stability in analog front-ends.
The device features intentional minor leakage optimization per AN90031 to reduce switching noise and improve transient response in low-current regulation paths. Thermal resistance from junction to solder point is 70 K/W when mounted on a 1 cm² cathode pad, enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V ±2 % at IZ = 50 µA - ensures tight reference accuracy in low-bias applications |
| Differential Resistance (rdiff) | 100 Ω max at IZ = 1 mA - maintains regulation stability under small load variations |
| Temperature Coefficient (SZ) | +3.8 mV/K - enables predictable voltage drift compensation in temperature-sensitive designs |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - supports continuous operation in compact SMT layouts |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - limits forward conduction loss in bidirectional protection schemes |
| Reverse Current (IR) | 0.1 µA max at VR = 7.3 V - ensures minimal quiescent current in always-on monitoring circuits |
| Junction-to-Solder Thermal Resistance | 70 K/W - allows direct thermal coupling to PCB copper for passive cooling without heatsinks |
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; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | 50 µA Zener test current - enables use in µA-level bias networks without compromising regulation accuracy |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise and improves switching transients in clamping applications |
| Tight voltage tolerance | ±2 % VZ tolerance - eliminates need for post-assembly trimming in precision reference designs |
| Small-form-factor SMT package | SOD123F footprint - fits high-density layouts while maintaining 830 mW derating capability on standard FR4 |
Applications
| Portable Sensor Biasing | Microcontroller Reset Clamping |
|---|---|
Use Scenario: Providing stable 9.1 V reference to analog front-end of battery-powered environmental sensors. IC Role / Device Role / Timing Role: Zener voltage reference for ADC input scaling and op-amp biasing. Use Value: 50 µA test current minimizes drain on coin-cell batteries; ±2 % tolerance ensures consistent sensor calibration across production units. |
Use Scenario: Clamping reset line voltage during brown-out conditions in ultra-low-power MCU systems. IC Role / Device Role / Timing Role: Reverse-biased Zener clamp limiting reset pin voltage to 9.1 V during supply transients. Use Value: 100 Ω rdiff at 1 mA ensures fast recovery from overvoltage events without latch-up risk. |
| Low-Power Signal Conditioning | USB-C Port Voltage Monitoring |
Use Scenario: Level-shifting and overvoltage protection for I²C bus lines in energy-harvesting nodes. IC Role / Device Role / Timing Role: Bidirectional transient suppressor using forward and reverse conduction paths. Use Value: 0.9 V VF limits forward conduction loss; +3.8 mV/K SZ allows predictable offset correction in firmware. |
Use Scenario: Monitoring VBUS voltage in USB-C accessory detection circuits where 9.1 V threshold triggers enumeration logic. IC Role / Device Role / Timing Role: Precision voltage threshold detector via comparator input referencing Zener output. Use Value: 15 Ω rdiff at 5 mA ensures minimal voltage droop during comparator sampling pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C9V1 | Same 9.1 V ±5 % rating but SOT23 package; higher rdiff (150 Ω @ 5 mA); no optimized leakage feature | Less suitable for noise-sensitive analog sensing; requires larger PCB area due to SOT23 footprint | Select only if SOT23 is already standardized in design and ±5 % tolerance is acceptable |
| MMSZ5240B | 9.1 V ±5 % in SOD-123; rdiff = 120 Ω @ 20 mA; no thermal resistance spec; no AN90031 leakage tuning | Higher power test current increases quiescent consumption; lacks documented noise-reduction behavior | Prefer only for cost-driven consumer applications where 50 µA bias and low-noise clamping are not required |
Compared with BZT5250H-B9V1X, BZX84-C9V1 trades tighter thermal performance and leakage optimization for broader availability, while MMSZ5240B sacrifices low-current precision and noise control for legacy compatibility - making the BZT5250H-B9V1X optimal for next-generation portable analog systems.
Availability
BZT5250H-B9V1X is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset clamping, and low-power signal conditioning requiring stable component supply across industrial and medical IoT programs.
Supply support for BZT5250H-B9V1X 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 discrete and logic devices, with leadership in automotive-qualified and energy-efficient components.
The BZT5250H series belongs to Nexperia's low-current Zener portfolio, engineered specifically for battery-constrained and noise-sensitive applications where regulation accuracy at microampere bias currents is essential.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-B9V1X?
The nominal Zener voltage is 9.1 V at 50 µA test current, with guaranteed minimum and maximum values of 8.92 V and 9.28 V respectively. Breakdown occurs within this band; operation above 9.28 V risks exceeding the specified differential resistance and thermal limits under sustained load.
Can BZT5250H-B9V1X be used in forward conduction mode?
Yes - it exhibits a maximum forward voltage of 0.9 V at 10 mA, making it suitable for dual-role applications such as bidirectional ESD clamping or polarity-insensitive bias networks, provided forward current remains within the 200 mA absolute maximum rating.
How does the SOD123F package affect thermal performance compared to SOD-123?
The SOD123F variant features a flatter lead profile and optimized thermal pad layout, achieving 70 K/W junction-to-solder-point resistance - 15 K/W lower than standard SOD-123 - due to enhanced cathode pad contact area and reduced internal thermal path length.
Is BZT5250H-B9V1X suitable for automotive applications?
No - this part is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling validation, or PPAP documentation. Nexperia explicitly states non-automotive qualification in the legal disclaimers; use only in industrial, medical, or consumer portable equipment.
BZT5250H-B9V1X 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):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.9 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-B9V1X FAQ
1.How can I place an order for BZT5250H-B9V1X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B9V1X 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-B9V1X reliable?
The price and inventory of BZT5250H-B9V1X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B9V1X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B9V1X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B9V1X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B9V1X?
BZT5250H-B9V1X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B9V1X 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-B9V1X?
For technical support, including BZT5250H-B9V1X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B9V1X requirements.
6.How does Aetrix verify that BZT5250H-B9V1X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B9V1X 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-B9V1X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B9V1X?
All BZT5250H-B9V1X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B9V1X, 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-B9V1X part is unused and in its original packaging.
Return procedure for BZT5250H-B9V1X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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