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PhotoMOS

What are PhotoMOS?

A PhotoMOS is a semiconductor relay with an LED as an input and MOSFET as an output.
It is used in various fields to improve device reliability and reduce size.


Basic Structure

<Optical Isolation>



<Capacitor Coupled Isolation>


[Glossary]

Epoxy ----- Epoxy resin
LED ----- Light Emitting Diode
MOSFET ----- Acronym for Metal-Oxide-Semiconductor Field Effect Transistor
A transistor that has structure efficiently combining Metal (Electrical conductor), Oxide film (Insulator), and Semiconductor (substance that has intermediate quality)
Photoelectric element ----- Solar battery and control circuit

How PhotoMOS Operate

<Optical Isolation>


<Capacitor Coupled Isolation>


Advantages of PhotoMOS

Obviously the PhotoMOS differ from the conventional electro-mechanical relays.
PhotoMOS are classified to semiconductor relays that have no moving contact, therefore they are superior to conventional electro-mechanical relays in life-expectance and reliability of contacts, operation speed, and their sizes.

But they also distinguish themselves from other switching solutions that utilize photo-couplers, photo-transistors etc.. PhotoMOS have MOSFET for output, therefore they are the most suitable devices for small analog signal switching.


Compared with Electro-Mechanical Relays
have moving contact:
Compared with SSR (Solid State Relays)
have phototriac for output:
●Longer lifetime (No limit on mechanical and electrical lifetime)
●Higher-speed and high-frequency switching
●Higher sensitivity (less power consumption)
●Smaller size
●Less contact problems such as arcs, bounce, and noise
●More resistant to vibration and impact
●No limitation for the mounting direction
●Able to control miniature analog signal
●Applicable to both AC/DC
●More sensibility
●Less leakage current
●Lower offset voltage
●Various contact structures such as 2a, 4a, 1b, 2b, and 1a1b in addition to 1a

Lineup

Panasonic offers PhotoMOS for various purposes with a wide range of products.
The PhotoMOS is provided in eight types according to features and recommended purposes.


Type name Features Recommended purpose
CC
Capacitor Coupled
Low On-resistance and low output capacitance Measurement devices, Probe Card,
Telecommunication devices, Medical devices
Battery Operating Equipment
RF
Radio Frequency
Low On-resistance and low output capacitance Measurement devices, Telecommunication devices, Medical devices
GU
General Use
Wide variation General-purpose, amusement, and security devices, Amusement devices
GE
General Use and Economic
Economic and reinforced insulation
HS
High Sensitivity
High Sensitivity
HF
High Functioned
Low On-resistance OA and transportation equipment, Telecommunication devices
HE
High Functioned and Economic
Low On-resistance, Economic
Power
Power
Power, slim-shaped Machine tools, Robots, Industrial equipment and facilities
PD
Power DIP
Power, flat-shaped

As of June 2015

Package Variations

Our PhotoMOS are offered in various packages from VSSOP, the smallest-footprint in our lineup to SIL, which can control up to 10A. We offer SOP16pin with 4a output and the built-in input resistor type. Panasonic has its own package options featuring their contribution to space-saving design and reducing man-hours.

PhotoMOS Package Variations

Classification by Package Form Classification by Implementation
TSON
Thin Small Outline No
lead Package)
SMD
(Surface Mounted Device)
VSSOP
(Very Shrink Small
Outline Package)
SON
(Small Outline No
lead Package)
SSOP
(Shrink Small Outline
Package)
SOP
(Small Outline Package)
DIP
(Dual Inline Package)
SMD
(Surface Mounted Device)
TH
(Through Hole Device)
Power-DIP
(Power Dual Inline
Package)
SIL
(Single Inline Package)
TH
(Through Hole Device)

We offer a line-up of voltage drive products with a built-in input resistor such as SSOP, SOP4pin, and SOP16pin. We can also meet your requirements in other packages after consultation. Please contact us.



Catalog Download

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Go to Product Information for PhotoMOS



Requests to customers (Automation Control Components & Industrial Device) [Excluding specific product]
Requests to customers (Automation Control Components & Industrial Device) [For specific product]
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