ntc 10d 9 thermistor
● Effective inrush current limiting.
● Effective overcurrent protection, Wide Applications.
● Small size, Reliable high power handling, Durable and RoHS Compliant.
● Fast Response to surge currents, ensuring immediate circuit protection.
● Wide Operates Temperature Range from -55°C to +200°C.
NTC 10D 9 Thermistor Introduction
The NTC 10d 9 is a specific type of Negative Temperature Coefficient (NTC) thermistor, widely utilized for its ability to limit inrush current in various electronic applications. This document provides an in-depth look into the specifications, applications, and benefits of the NTC 10D-9 thermistor, highlighting its importance in modern electronics.
What is an NTC Thermistor 10D9
An 10D9 NTC thermistor is a type of resistor whose resistance decreases as the temperature increases. The term "negative temperature coefficient" refers to this characteristic. 10d-9 NTC thermistors are commonly used in temperature sensing and control applications due to their precise and reliable response to temperature changes.
Overview of NTC 10D-9 Thermistor
The NTC 10D-9 thermistor is part of the MF72 series, designed specifically for surge current suppression. It is composed of a specially formulated metal oxide ceramic material and is typically radial resin-coated.
Dimension (In:mm)
Marking of Part Number:
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1.Series: MF72 - Surge Protection NTC Thermistor
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2.R25 Resistance: 10-10Ω
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3.Dimension:D-NTC Thermistor Diameter
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4.Chip Diameter: 9-Φ9mm
NTC 10d 9 thermistor Applications:
NTC thermistors, especially the 10D-9 model, are extensively used in various applications due to their robust performance in limiting inrush current and protecting electronic circuits.
| Major Application | Function | Benefit |
| Electronic Ballasts and Energy-Saving Lamps | Protects against inrush current, prolonging the lifespan of electronic components. | Ensures stable operation and prevents damage to delicate circuits. |
| Power Supply Circuits | Limits surge currents in switch-mode power supplies (SMPS) and uninterruptible power supplies (UPS). | Enhances reliability and efficiency of power supply units. |
| Consumer Electronics | Provides protection in devices like televisions and monitors. | Prevents sudden power surges from damaging the equipment. |
| Motor Protection | Used in motor start circuits to prevent high inrush currents. | Reduces mechanical stress and prolongs motor life. |
| Industrial Equipment | Ensures overcurrent protection in welding machines and other heavy-duty equipment. | Enhances operational safety and equipment durability. |
Application Example: Electronic Ballasts
An electronic ballast controls the starting voltage and operating current of fluorescent lamps. The NTC 10D-9 thermistor plays a crucial role in protecting the ballast and the lamp.
Process:
- Initial Power-On:
- The NTC thermistor limits the inrush current, protecting the ballast's electronic components.
- Stable Operation:
- As the thermistor heats up, its resistance decreases, allowing normal current flow to the lamp.
- Turn-Off:
- When the power is turned off, the thermistor cools down, ready to limit the inrush current at the next power cycle.
Application Precautions for NTC 10D-9 Thermistors
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Item Application Precaution Description 1 Series Connection The ntc 10d 9 thermistor must be connected in series with the load circuit for effective inrush current limiting. 2 Cooling Time Allow adequate time for the thermistor to return to its cold state between successive operations. 3 Temperature Considerations Ensure surrounding components can withstand the heat generated by the thermistor. 4 Ventilation Proper ventilation should be provided to prevent overheating. 5 Contamination Prevention Avoid contact with liquids, solvents, and ensure the thermistor ntc 10d 9 surface remains clean.
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Technical Details and Benefits
The NTC 10D-9 thermistor offers several advantages that make it ideal for use in demanding applications:
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Item Advantage Description 1 Long Service Life and High Reliability Built to withstand harsh operating conditions, providing consistent performance over time. 2 Small Size and High Power Handling Compact design without compromising on power dissipation capabilities. 3 Fast Response to Surge Currents Quick activation ensures immediate protection against surge currents. 4 Low Residual Resistance Minimizes power loss and improves efficiency in steady-state operations. 5 Wide Operating Temperature Range Capable of functioning effectively from -55°C to +200°C, suitable for various environments. 6 RoHS Compliance Environmentally friendly and safe for use in all regulated markets.
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Selection Guide of NTC 10d 9 Thermistor
Choosing the correct 10D 9 NTC thermistor involves considering several parameters to match the specific requirements of the application.
Selection Criteria:
- Maximum Operating Current:
- The thermistor’s maximum operating current should exceed the actual operating current in the circuit.
- Rated Zero Power Resistance (R25):
- This should be chosen based on the circuit's voltage and expected surge current.
- Beta Value:
- A higher beta value indicates lower residual resistance and less temperature rise during operation.
- Thermal Capacity:
- Products with a larger time constant and dissipation coefficient are preferred for applications requiring high surge current restraint.
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Detailed Specifications
| Item | Part No. |
Resistance R 25（Ω） |
Max Steady State Current (A) | Approx. Resistance Value at Maximum Current (Ω) | Dissipation Factor (mW/oC) |
Thermal Time Constant (sec) | Dimensions (mm) | |||
| Dmax | Tmax | F±1 | ||||||||
| 1 | MF72-10D9 | 10 | 2 | 0.458 | 11 | 32 | 9.8 | 5 | 5 | |
Packaging and Storage of NTC 10d-9 Thermistor
The NTC 10D-9 thermistor is available in various packaging options, ensuring flexibility in handling and installation.
Packaging:
- Reel Packaging: Suitable for automated assembly lines.
- Ammo Packaging: Ideal for manual insertion processes.
- Bulk Packaging: Available for custom and varied requirements.
Storage Conditions:
- Temperature: -10°C to +40°C
- Humidity: ≤ 75% RH
- Environment: Store in a non-corrosive atmosphere away from direct sunlight.
Reliability Testing of 10D9 NTC Thermistor
The NTC 10D-9 thermistor undergoes rigorous testing to ensure its reliability and performance in various conditions.
| Item | Test items | Standards | Test Condition Description of 10D9 | ΔR25/R25 (typical) | Requirement | ||||||
| 1 | Rapid temperature cycling | IEC 60068-2-14 | Lower test temperature: -55℃ Upper test temperature: 125℃ Number of cycles: 10 | <10% | No visible damage | ||||||
| 2 | Storage in dry heat | IEC 60068-2-2 | Storage at upper category temperature Temperature: 125℃ Time: 1000h | <10% | No visible damage | ||||||
| 3 | Storage in damp heat, steady state | IEC 60068-2-3 | Air temperature: 40℃ Relative humidity of air: 93% Duration: 21 days | <5% | No visible damage | ||||||
| 4 | Endurance | \ | I=Imax t: 1000h | <10% | No visible damage | ||||||
| 5 | Cyclic endurance on ntc 10d 9 | \ | I=Imax, 1000 cycles On-time=1 min Cooling time=6 min | <10% | \ | ||||||
| 6 | Transient load | \ | Capacitance=CT Number of cycles: 1000 | <5% | No visible damage | ||||||
Recommend Soldering Condition on ntc 10d 9 NTC Thermistor:
Soldering Profile Wave Flow
Recommend Reworking Condition With Soldering Iron
| Item | Description | Condition | ||||
| 1 | Soldering Iron-tip Temperature | 360℃ (max.) | ||||
| 2 | Soldering Time | 2 sec (max.) | ||||
| 3 | Distance from coating | 6 mm (min.) | ||||
ntc 10d 9Packing Quantity
| Type | Body diameter | Packaging Quantities | ||
| Reel | ≧9.0mm | 1000PCS | ||
| ＜9.0mm | 1500PCS | |||
| Ammo | ≧12mm | 500PCS | ||
| ＜12mm | 1250PCS | |||
| Bulk | ≧12mm | 500PCS | ||
| ＜12mm | 1000PCS | |||
Conclusion of 10D9 NTC Thermistor
The NTC 10D-9 thermistor is an essential component for inrush current limiting and overcurrent protection in a variety of electronic applications. Its robust design, high reliability, and wide operating temperature range make it suitable for use in power supplies, electronic ballasts, consumer electronics, and industrial equipment. By incorporating the ntc 10d 9, manufacturers can enhance the safety, efficiency, and longevity of their products.
For further inquiries or to place an order, please contact Shenzhen DXM Technology Co., Ltd. via our official website or email.
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