CD4066B CMOS Quad Bilateral Switch question

Look at the On-State resistance data.

Typical resistance at room temperature is about 500 ohms and could be as high as 1K.

This means if you run 20 mA through the switch the voltage will typically drop 10 volts.

They are not very good at switching power. You can switch several in parallel to reduce the resistance, but it still won't be very good.

High power analog switches are available.

Thanks for the reply.

My problem is that there are extremely limited weight and size limitations for switching power in this project. As well there is a need to switch around 10 channels - hence i'm looking for a chip that weight ~1 gram, which can handle several channels, rather than using 10 times a solid state or a mechanical rely, which add up to more than 50 grams and 3 match boxes volume, which is a lot in this case. 

Do you know of a small chip that does what the CD4066B CMOS Quad Bilateral Switch does and has the same small chip size - but rather can handle around 1-2 Amps of current?

I don't think there is one:

The best I could  find on a quick search was ADG1611, 4 switches, 1 ohm on resistance but max current 280mA per channel.

Try taking a step back - can you explain what you are trying to do at a higher level and perhaps we can think of a way of getting there - so far I can't imagine doing much better than using discrete or dual MOSFETs - you can get these in quite small packages.

These look nice(Farnell 2400374 Vishay  SIA931DJ-T1-GE3SIA931DJ-T1-GE3 2mm square surface mount package

MK

Why a chip? A MOSFET to switch a couple of amps isn't very large - four of them won't take up any more room than the 4066 and will probably weigh less.

http://uk.farnell.com/mosfet-transistors-lt-600v

How do i know when looking for the right MOSFET, if it is an isolated MOSFET, e.g. just like a mechanical or solid state relay? What i mean is that there is no common ground. Do i need common ground in all types of MOSFETs?? 

if a right MSOFET can be found at small weight and size, then i need an isolated (no common ground) MOSFET, that can be switched by an Arduino 5V and handle up to 12V 2A.

Do you know of such a MOSFET?

Jon thanks for replying,

Please see my above reply.

MOSFETs are not isolated - if you are switching 12V and 2 A from a 0 - 5V Arduino pin you'll need level shifting if you want high side switching (P channel MOSFET) or you could switch the low side (N channel MOSFET) and drive the MOSFET gates directly.

MK

MK,

The situation seems to be that all is working well with 10 of the following relays and what i need, is a chip that does just the same, but is smaller and weighs less, in comparison to these relays.

Here are the relays model that i want to replace with an IC:

https://www.sparkfun.com/products/100

i just found the following IC, that weighs a fifth of the JZC-11F relay and is visibly smaller - but it can handle up to 0.5 Amps, and i need at least twice as much Amps to pass by.

Here it is: Schneider Electric/Magnecraft - 107DIP-5 - PCB Mnt Vol-Rtg 120/100AC/DC Ctrl-V 5DC Cur-Rtg 0.5A SPST-NO Power Reed Relay…

If you really need the isolation, you're probably back to a solid-state relay.
Something like this will give you 4kV of isolation and switch a couple of amps

http://uk.farnell.com/infineon/pvn012spbf/relay-photomos-spst-no/dp/1608203