The RL4504-10-73-S50 from Amphenol Advanced Sensors/Thermometrics is NTC inrush current limiter with 16 Ohms (R @ 25°C), ±25% tolerance, 2.7A current rating and 330 mOhms (R @ current). This current limiter has 0.550" (13.97mm) diameter and 0.328" (8.33mm) lead spacing. Wide operating temperature range -50 to 175°C.