The KA4558DTF is a dual operational amplifier (op-amp) manufactured by Fairchild Semiconductor. Rochester Electronics is a manufacturer and distributor specializing in the re-creation and
the TDA7200 from Rochester Electronics is related to wireless control and presumably features an interface for wireless communication. Here are some general insights based on the updated information:
The TPS2051B is a single current-limited power distribution switch manufactured by Rochester Electronics. Here are the key features and specifications of the TPS2051B: