Power NTC Thermistor has an excellent non-linearity characteristic for the resistance and temperature, its appliance is an easy and effective method to protect electronic device through surge current restraining.

Feature of Power Thermistor

• Power NTC thermistors are in small size but with a high power that to restrain the Surge current.
• Power NTC thermistors possess the electronic character of fast reflection, high reliability and long-life for use.
• The material has a high constant as “B value” with small remained resistance.
• Power NTC thermistors have a large application range integrate products  series.

Rage of Application

• Switch mode power supply,  Adapter.
• Transformer, LED driver circuit.
• Electronic rectifier, electronic heater.
• Electric motor.
• It has a protected function for RT, display, lighting device and circuit of different electronic equipment.

Certificates

• Safety Approval Certificate: UL / CUL
• Quality management system Certificates:  ISO9001:2008 
• ISO14001:2004

Electrical Characteristics

• Rated Zero-Power ResistanceRN (Ω) : 5±20% Ambient temp. Range:25℃±2℃(TA).
  Testing voltage: 1.5VDC
  After placing for 1~2 hours under TA, the resistance value shall be measured.
• Thermal Dissipation Constant δ(mW/℃) : ≥15, The thermal dissipation constant(δ) could be calculated by the ratio of a change in power dissipation(ΔP) of the thermistor to a change in temperature(ΔT) of the thermistor at a specified ambient temperature
• Thermal Time Constant τ(s) : ≤68, The time(τ shall be measured within which the temperature change of NTC thermistor is reached at 63.2% of the ambient temperature change under zero power condition
• Material Constant B : 2700±10% B=T1T2/( T2- T1) ×Ln (R1/R2), R1 , R2 is zero-power resistance at T1 , T2
  T1 = 298.15 K(25℃)  T2 = 323.15 K(50℃)
• Max.Steady State Current (A) : visible mechanical damage.
  ΔRN / RN ≤20% (ΔR =∣RN-RN'∣), 25℃±2℃Ambient temp. Range, 5.0A  Testing Current