EPCOS 3800mW 4Ω 热敏电阻器 B57213P409M301, ±20%容差, 80s热时间常数

Epcos B5721x Inrush Current Limiting Thermistors

Applications in peripheral communication equipment e.g. switch mode power supplies
Black coated Thermistor disk, flame retardant to UL94V0
Terminal wires made from tinned copper
Stamped with resistance value and tolerance
High stability of electrical characteristics