The TTC-248N is a part manufactured by Tamura Electric Industries Co. Ltd., a Japanese manufacturer that specializes in producing electrical components and assemblies. It is a surface mount transformer of size 12.5 x 10.5 x 5.5 mm which features wide frequency range, high insulation resistance and low insertion loss. It is made for use in power supplies, communication systems, audio-video systems and other similar applications. This transformer is highly reliable and has excellent dielectric strength, making it an ideal choice for a wide range of applications.