Abstract: Provided is a fluid state identification device including a fluid state identification unit having a sensor part and a support part, and a cover surrounding the fluid state identification unit. The support part has a front surface part and a rear surface part which are located opposite to each other. The sensor part is located on the front surface part side. The cover has a lower opening and an upper opening. Inside the cover, a first fluid flow route running through a front area adjacent to the support front surface part and a second fluid flow route running through a rear area adjacent to the support rear surface part are formed and located so as to make the fluidity of the fluid in the second fluid flow route higher than the fluidity of the fluid in the first fluid flow route.

Abstract: Provided is a lead frame, an electronic device provided with a lead frame, a method of producing a lead frame, and a method of producing an electronic device provided with a lead frame that has been produced by the method of producing a lead frame, in which a lead frame is not corroded, a mechanical strength of the lead frame is not lowered, it is not necessary to carry out the conventional plating processing steps composed of two stages, the processes are simple, a cost is lower, and a large amount of waste liquid such as plating processing liquid is not generated, thereby preventing an environment from being affected. The lead frame includes an outer lead part and an inner lead part, and plating is carried out on at least a part of one or both of the outer lead part or the inner lead part.