Electromechanical and semiconductor relays

PhotoMOS relays

Latest PhotoMOS semiconductor technology enables fast, quiet, bounce-free switching in miniature sizes.

PhotoMOS relays product hero

PhotoMOS relays for automotive and industrial applications

PhotoMOS relays with a MOSFET output enjoy an almost unlimited lifetime if used according to the specifications. Moreover, they are extremely reliable, unaffected by vibration, and their On-resistance remains stable throughout their entire lifetime. In addition to our broad product line-up for the industrial market, automotive-qualified types are also available.

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Discover our complete PhotoMOS relay lineup

HE series - low on resistance

Medium power capability for use in industrial applications; wide range of 1 Form A, 1 Form B, 2 Form A and 1 Form A 1 Form B types.

GE series with reinforced insulation

- 5,000Vrms insulation
- Wide range of 1 Form A, 1 Form B, 2 Form A and 1 Form A 1 Form B types.

HF series with low on resistance

Suitable for low level analogue signals; sensitive types available.

HS series with high sensitivity

Very low LED forward current, ideal for battery-powered devices.

CC series capacitor-coupled relays in a small TSON package

Low On-resistance, low output capacitance and low current consumption. Guaranteed performance at high temperature.

Power series in slim package

Up to 10A switching, DC only and AC/DC dual use available for machine tools, robots,iIndustrial equipment and facilities.

PD series

- Flat package - DIP4-pin type
- High capacity up to 2A load current

PhotoMOS technology

PhotoMOS technology

The basic construction of the PhotoMOS relay can be seen in the illustration. Light emitted from an LED on the input side passes through an isolator that is permeable to light and is detected by a solar cell. Via a trigger circuit, the solar cell‘s output voltage controls the gates of two source-coupled MOSFETs at the output. This arrangement allows PhotoMOS relays to switch both AC and DC loads. The integration of MOSFET technology in PhotoMOS relays significantly differentiates them from semiconductor relays with triacs or transistors at the output.

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PhotoMOS App teaser


PhotoMOS App

The right relay for all APPlications: Panasonic PhotoMOS.
Discontinued products

Discontinued PhotoMOS

Discontinued PhotoMOS / not for new application.
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