The TAJA475K010RNJ is a Molded tantalum capacitor from the KYOCERA AVX TAJ series, rated at 4.7 µF with a 10 V working voltage and ±10% tolerance. The 5 Ohm ESR is a key parameter: it limits ripple current handling and contributes to self-heating under AC load. For low-frequency bulk decoupling or hold-up circuits, this ESR is acceptable; for high-frequency switching supplies, a lower-ESR polymer or ceramic alternative may be preferred.
The full military temperature band means it also fits avionics and downhole instrumentation without derating concerns down to -55°C.