10D-15 Negative Temperature Coefficient Thermistor

10D-15 Negative Temperature Coefficient Thermistor is a reliable power-type NTC component specifically engineered to suppress high inrush currents in electronic circuits. This device exhibits a significant decrease in electrical resistance as its body temperature rises. Consequently, it provides high initial resistance to limit the surge of current during power-up, then transitions to a low-resistance state to maintain high efficiency during steady-state operation. Utilizing high-quality metal oxide ceramic materials, the 10D-15 offers excellent thermal stability and a rapid response time. Therefore, you can effectively protect sensitive downstream components like bridge rectifiers and filter capacitors from damage caused by sudden power spikes.

Key Features:

• Effective Inrush Limiting: The thermistor provides a high initial resistance of 10 Ω, which safely absorbs and restricts turn-on surge currents.
• High Current Capacity: Designed to handle a maximum steady-state current of 5 A, making it suitable for medium-power supply applications.
• Thermal Stability: Features a wide operating temperature range and consistent performance over long-term usage.
• Fast Response: The high-Q ceramic material ensures a quick thermal time constant, allowing the device to decrease resistance rapidly once the circuit activates.
• Compact Disk Design: Its small physical footprint allows for easy integration into space-constrained power supply boards.

Technical Specifications:

• Resistance at 25°C (R₂₅): 10 Ω ±20%
• Max. Steady State Current (I_max): 5 A
• Approx. Resistance at Max Current: ≈ 0.20 Ω
• Thermal Time Constant (τ): ≤ 75 seconds
• Dissipation Constant (δ): ≈ 18 mW/°C
• Operating Temperature: −55°C to +200°C

Mechanical Specifications:

• Coating Material: Silicone or Phenolic Resin (Flame Retardant)
• Lead Material: Tinned Copper Wire (Radial leads)
• Body Shape: Circular Disk
• Solderability: Meets standard through-hole soldering requirements.

Dimensions:

• Disk Diameter (D): ≈ 15.0 mm
• Body Thickness (T): ≈ 5.0 mm
• Lead Pitch (F): ≈ 7.5 mm
• Lead Diameter: ≈ 0.8 mm
• Lead Length: ≥ 25 mm

Pinout and Wiring:

• Connection Type: Non-polarized two-terminal device.
• Series Installation: Always wire the NTC thermistor in series with the AC or DC power line input.
• Placement Note: Furthermore, ensure adequate spacing around the thermistor as it generates heat during normal operation.
• Protection Layout: Typically placed between the fuse and the bridge rectifier for maximum circuit protection.

Datasheet Reference:

• Download 10D-15 NTC Thermistor Datasheet

Commonly Used in:

• Switching Power Supplies (SMPS): Limiting current spikes in computer and industrial power adapters.
• LED Drivers: Preventing high-voltage surges from damaging sensitive LED strings and control ICs.
• Consumer Electronics: Protecting televisions, monitors, and audio equipment during initial power-up.

Applications:

• Inrush Current Suppression: Reducing the mechanical and electrical stress on components during the charging of filter capacitors.
• Motor Start-up Protection: Managing the initial current draw in small AC or DC motors.
• Soft Start Circuits: Implementing basic soft-start functionality in cost-sensitive electronic designs.

Equivalent Models:

• SCK-105: A common equivalent providing similar resistance and current handling characteristics.
• MF72-10D15: The direct cross-reference part number often used by alternative manufacturers.
• NTC 10D15: Generic industry standard designation for this specific power thermistor.

Package Includes:

• 1 x 10D-15 Negative Temperature Coefficient Thermistor