Light emitting diode wired to zener diode

A semiconductor light emitting device comprising:

• a semiconductor light emitting element;
• a Zener diode;
• and
• a conductive support component that supports the semiconductor light emitting element and the Zener diode, wherein
• the conductive support component includes an electrically-conductive part and an insulating part,
• the electrically-conductive part includes a first electrically-conductive part and a second electrically-conductive part,
• the first electrically-conductive part is insulated from the second electrically-conductive part with interposition of the insulating part,
• the insulating part has an insulating main surface and an insulating back surface oriented toward opposite sides in a thickness direction,
• the first electrically-conductive part includes a first main surface part exposed from the insulating main surface,
• the semiconductor light emitting element is mounted on the first electrically-conductive part,
• the second electrically-conductive part is disposed on a side opposite to the Zener diode across the semiconductor light emitting element,
• the second electrically-conductive part includes a second back surface part exposed from the insulating back surface,
• the first main surface part includes a first main surface base part on which the semiconductor light emitting element is mounted and a first main surface extending part extending from the first main surface base part in a first direction orthogonal to the thickness direction,
• the first main surface extending part overlaps with the second back surface part as viewed in the thickness direction,
• the semiconductor light emitting element has a first electrode, and
• the semiconductor light emitting device further includes:
• a first wire connected to the Zener diode and the first electrode;
• and
• a second wire connected to the first electrode.