Patent ID: 11953375
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A light receiving module comprising:
a stem having a circular shape;
a plurality of lead pins penetrating through the stem and including a signal lead pin;
a block provided on an upper surface of the stem;
a waveguide light receiving device provided on a side surface of the block, the side surface of the block being substantially orthogonal to the upper surface of the stem;
an amplifier provided on the side surface of the block and amplifying an electric signal output from the waveguide light receiving device;
a first capacitor provided on the side surface of the block and connected to the waveguide light receiving device;
a second capacitor provided on the side surface of the block and connected to the amplifier;
a first relay substrate provided on the upper surface of the stem and arranged between the block and the signal lead pin;
a first transmission line provided on the first relay substrate;
a first wire connecting one end of the first transmission line and an output terminal of the amplifier; and
a second wire connecting the other end of the first transmission line and the signal lead pin,
wherein the plurality of lead pins includes a first power-source lead pin supplying electric power to the waveguide light receiving device and a second power-source lead pin supplying electric power to the amplifier,
the first relay substrate is arranged between the first power-source lead pin and the second power-source lead pin,
the first power-source lead pin is wire-connected to the first capacitor without the first relay substrate connected therebetween, and
the second power-source lead pin is wire-connected to the second capacitor without the first relay substrate connected therebetween.