Murata PTGL10BB120N0P52A0 Alternative,
PTC Thermistor for Circuit Overcurrent Protection 12 Ohm 1.2A 250V

AMWEI Ordering Code: AMZ11-10N12RN250

Appearance and Dimension

PTC Thermistor Kinked Lead Coated Disk Drawing

PTC Thermistor Kinked Lead Coated Disk Drawing

  • Silicon resin coated ceramic disk.
  • Coated ceramic disk outer diameter D : 12mm max.
  • Coated ceramic disk thickness T: 5.5mm max.
  • 2 Tinned lead wire space F: 5.0± 1mm
  •  Pin wire diameter d: 0.6mm
  • Pin wire length L: 25mm min.
  • Ceramic body to kinked wire length H: 16mm max.


  1. Application: Overcurrent protection, Overload, Short circuit protection.
  2. Best suited to meet the requirements for power supplies motor transformer protection, eg application in transformer wire coil.
  3. Error-free operations are assured by rush current.
  4. Circuit is protected until current is turned off.
  5. Restores the original low resistance value automatically once the overload is removed.
  6. Non-contact design leads to long life and no noise.
  7. Durable and strong against mechanical vibration and shock.

Electrical Specifications

  • Resistance @25C  R25 :12Ω +/-  30%
  • Rated voltage (RMS) : 230 V
  • Maximum operating voltage Vmax:  265 V
  • Maximum withstanding voltage Vwith: 350 V
  • Maximum permissible repetitive turn over current Imax: 1.2A
  • Hold Current at +25℃ (Non-trip Current) : 180 mA
  • Hold Current at +60℃ (Non-trip Current):  130 mA
  • PTC Thermistor Trip Current, Operating Current at +25℃ It : 350 mA
  • Curie temperature (Switch temperature) : 100±10 ℃
  • Operating ambient temperature range (V=0): -40~+125C
  • Operating ambient temperature range (V=Vmax) :  0~60C

Reliability Data

Test Item Standard Test conditions |ΔR25/R25|
Electrical endurance,
IEC 60738-1 Room temperature, 1.2A; 250V
Number of cycles: 100
Electrical endurance,
IEC 60738-1 storage at Voltage: 230V
Ambient temperature: +60C
Test duration: 1000 h
Damp heat IEC 60738-1 Temperature of air: 40℃,
Relative humidity of air: 93%,
Duration: 56 days
Test according to IEC  60068-2-78
Lead wire tensile IEC60068-2-21 Test Ua: pull strength 10N, 10 seconds,
Test Ub: bending 90°, pull strength 5N,
successively twice.
Test Uc: revolving 180°,
successively twice.
Rapid change
of temperature
IEC 60738-1 T1 = Top,min (0 V), T2 = Top,max (0 V)
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, test Na
Climatic sequence IEC 60738-1 Dry heat: T = Top,max (0 V)
Test duration: 16 h
Damp heat first cycle
Cold: T = Top,min (0 V)
Test duration: 2 h
Damp heat 5 cycles
Tests performed according to
IEC 60068-2-30

Packaging Information

Loose bulk, or Production tape package.