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OPA541: opa541

Part Number: OPA541

im new solder it seems to deaign a board i would need speacial pcb baord ? For this chip. Is there any after market extensions plugs for this chip fit into to make aoldering easier?

  • Hi Joe,

    These IC package is really design to mount on a heat sink on top of PCB. You need to have a good size heatsink if you are going to drive a lot of power in and out of it. 

    Please check on youtube and/or ebay on OPA541 part, and you will get some ideas how to do it. If you have any issues, please let me know. 

    BYW, I have not gotten your invitation via E2E. 

    Best,

    Raymond

  • what about ic adapter to 1 volt in 350 milliamps

  • Hi Joe,

    Where did you see 1V 350mA IC adapter?

    There are only two package TO-220 and TO-3. TO-220 has 11 pins and TO-3 has 8 pins. I do not recall that it has IC adapter.

    Best,

    Raymond

  • Its a silver heat sink is that what chip connects to ?

    Found part number ats-pcb1073 on mouser

  • Hi Joe,

    I don;t think that it will fit. That is for standard TO-220 package, maybe good for 2W of dissipation or so. 

    You need large heat sink as shown in the captured image below. I think that you are going to draw close to 50W or more for audio amplifier application. I found that image from Google image section. 

    Best,

    Raymond

  • Ok got it thanks you!!

    Any idea what size chip quick i need ?

  • What is chip quick?  Because it is high power amplifier with large heat dissipation, OPA541 IC will require to be mechanically bolted down to the heat sink with a high conductivity thermal pad between the IC and heatsink. 

    You can calculate the size of heatsink by the amount of power dissipation you will operate. Then multiple the size of heatsink by 2 or 3 factors to give you some thermal margin. If you have cooling fan on top of it, then the size of heatsink can be reduced. Think the OPA541 Op Amp as your desk computer's CPU, which it will require a good size heatsink + fan with certain airflow, otherwise, it will overheat and stop working. 

    Best,

    Raymond

  • Mouser 595-opa545aiddag4

    Hard to solder using mous pa-071 quick chip look it up

    Not running more then 1 amp

  • Hi Joe,

    Here is my suggestion. Go to Amazon and search for OPA541, and order one of these module, see the picture below. Then you can take it apart and put together to experiment with the op amp. 

    I do not have all the information per your project. If you running 1A, your voltage rail is 30V, for instance, that is 30W of heat dissipation at the OPA541. The module below may be overkill if you are running  at1A, it will give you ideas how to build it. 

    If you just want a quick setup, you can bolt the OPA541 onto an copper or aluminum block or large heat sink, and run your wire connection to 11 pins of OPA541, and wrap each wire with heat sink tube (to prevent short). It will not look pretty, but that is quickest way to get your project going. Once you know what you want, you can make it pretty or compact. 

    Best,

    Raymond