The RL3504-31.2-73-S13 from Amphenol Advanced Sensors/Thermometrics is NTC inrush current limiter with 50 Ohms (R @ 25°C), ±25% tolerance, 1.1A current rating and 890 mOhms (R @ current). This current limiter has 0.449" (11.40mm) diameter and 0.250" (6.35mm) lead spacing. Wide operating temperature range -50 to 175°C.