Component Learning Group - Page 9

Group Administrators: 1 | Group Member: 367 | Group Threads: 356

Electronic components are basic electronic element or electronic parts usually packaged in a discrete form with two or more connecting leads or metallic pads. Electronic Components are intended to be connected together, usually by soldering to a printed circuit board (PCB), to create an electronic circuit with a particular function.

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4 comments

747 views

IC Contamination

The solder joint appeared dull and there is dewetting on the PCB after reflow. The leads of IC we used appeared dull grey before soldering. Dose anyone happen to know if there is a standard to v...(view more)

hakan kaynar

2017/2/27 10:48:44

3 comments

721 views

Oven Profile

Need some suggestions on oven profile. I run a BTU VIP98 oven. Has 7 zones, convention heat and all. My profile goes (in Celcius) 150/160/170/180/205/215/180 moving at 28in/min. Roughly 5 minutes from...(view more)

Indi

2017/2/27 10:41:01

4 comments

811 views

FET circuit design

I'm not new to BJT design, but I am to FET/JFET design and am having some real dificulties. Seems that all the books that I presently have access to jump over critical steps in determining the DC quie...(view more)

enrico.beccati

2017/2/27 8:28:26

5 comments

772 views

IC packaging Specs

I have run across reference to EIA-481 for specifications on Tape And Reel components for automatic placement and am looking for something similar that specifies standards or dimensions for IC Tubes o...(view more)

jorgedavid907

2017/2/27 7:18:55

5 comments

849 views

SPC on Chip Placement Machines

Hi All, Does any one out there have SPC control on Chip placement Machines? I was wondering what type of parameters we can monitor. We have Siplace here equip with SEC-GEM and a monitoring softw...(view more)

George Blat

2017/2/27 7:02:03

5 comments

830 views

Cracked Capacitors

Our company is experiencing cracked caps at our pick and place operations. The caps are being placed onto epoxy dots for subsequent wave solder operations. At present, be have set the pressure of the ...(view more)

Androiders

2017/2/27 6:14:54

5 comments

812 views

PCB Support

Hello All, We assemble boards which are small in size. We use nests for support when screen printing the boards. The nest gives support along the edges of the board. However we are bringing in a...(view more)

taylor_john_z

2017/2/27 5:41:40

5 comments

799 views

CP Feeder Maintenance

Does anyone have any recommendations on how to track feeder maintenance on fuji CP feeders in a contract shop ? We are constantly setting up and tearing down feeders. Some feeders may be getting picke...(view more)

hlmcorreo

2017/2/27 4:31:22

5 comments

914 views

Lead-Free Boards and Components

As converting our boards to lead-free finish (Immersion White Tin) we decided to change de mask color from green to blue. We thought this would be a good idea to spread the idea so we could easily rec...(view more)

1029902662

2017/2/27 2:01:42

1 comments

701 views

CAD U39 USB Microphone

Hello, I’ve got a problem with CAD U39 USB Microphone. It produces some kind of static noise at -48db even if it’s turned off with a selector on it. I’ve tried different USB-sockets ...(view more)

Mustafa ozcelik

2017/2/26 21:29:38

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