What is PhotoMOS?
A PhotoMOS is a semiconductor device 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
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 |
Advantages of PhotoMOS
Obviously the PhotoMOS differ from the conventional electro-mechanical relays.
PhotoMOS are classified as semiconductor devices 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: |
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●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 |
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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 |
Package Variations
Our PhotoMOS are offered in various packages from VSSOP, the smallest-footprint in our lineup to SIL, which can control up to 10 A. We offer SOP 16 pin 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 | |
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TSON (Thin Small Outline No lead Package) |
SMD (Surface Mounted Device) |
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VSSOP (Very Shrink Small Outline Package) |
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SON (Small Outline No lead Package) |
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SSOP (Shrink Small Outline Package) |
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SOP (Small Outline Package) |
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DIP (Dual Inline Package) |
SMD (Surface Mounted Device) TH (Through Hole Device) |
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Power-DIP (Power Dual Inline Package) |
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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 SOP 16 pin. We can also meet your requirements in other packages after consultation. Please contact us.
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