Electronics Forum: any 3m 200a (Page 1 of 4)

SMT tape boards!

Electronics Forum | Fri Oct 21 08:19:15 EDT 2005 | Jim

We are experinecing adhesives left on the boards after running taped boards for placement verification on NPI. We've been using 3M double sided (333) tape for over 15 years. Any other suggestions on a good tape to use? This may be a quality issue

Reflow of flex circuit

Electronics Forum | Wed Mar 04 07:08:55 EST 1998 | Pat Copeland

I am looking for information on reflow temps for a flex board. There is only one 6 pin IC but the board has a 3M double sided tape. Is it possible to reflow without damaging the tape. Any suggestions?

Capacitor securing

Electronics Forum | Wed May 25 12:12:26 EDT 2005 | Dave G

3M jetmelt. A bit better than off the shelf reg hotmelt. Also use a GE white RTV. Never had any caps come off the board with either. DG

Re: SMD mounting height

Electronics Forum | Fri Apr 17 14:37:13 EDT 1998 | Justin Medernach

| We have to mount our SMD devices 0.1 to 0.4 mm off the pcb | PCb substrate to compensate for thermal stressing in a | Space enviroment. Has any one any ideas or contacts for | dissolvable pads. this only applies to leadless components Robert, Try

Re: Profiling on populated or unpopulated board?

Electronics Forum | Wed Feb 10 18:17:46 EST 1999 | Earl Moon

| Hi, | | Has anyone found any significant differences on profiling using populated and unpopulated boards? Is it worth sacrificing a board to the profile gods? | | Joe | What's the cost of not doing it. In the same breath, why not wait for a sc

reflow oven

Electronics Forum | Mon May 24 15:50:11 EDT 2004 | Rob

hi all What do you think about soldering pb-free in reflow oven (air) lenght 1,7m (5 zones top,bottom) with max zone temp. 300C? Do you think that this process will be stable? Our max PCb dimension 260x260 mm. When i compare different oven producer t

Re: Sequencer Axial Machines Adhesive Tape

Electronics Forum | Mon Jun 22 17:47:03 EDT 1998 | Dave F

| Dear Sirs, | If any one involved in THT ,Please advise with a company info and tel/fax which produce 6mm adhesive tape for sequencer axial machines. | thanks all | Mohamed Ragai Mohamed: Try the following sources. Dave F Permacel New Brunswick, N

Wireless wrist strap

Electronics Forum | Tue Oct 19 09:26:51 EDT 2004 | HOSS

Arman, We introduced wireless wrist straps here on a small scale for safety related jobs such as mass lead trimming. These straps operate by the "Corona" effect which, as it turns out amounts to this: You need to drink a case of that swill to conv

Spray fluxing, How much air pressure?

Electronics Forum | Mon Oct 16 16:01:42 EDT 2006 | timnop

I have a wave machine (offshore made) with internal spray fluxer configured with a conventional spray gun set up. In order to spray fluid (in this case, flux) I must set the air pressure at 0.3 mPA (43 PSI). At that pressure, my flux sprayer creates

Encapsulating prior to Potting

Electronics Forum | Wed Feb 25 11:37:01 EST 2015 | jasonnova

We have a customer with an assembly that will require potting using 3M DP-270. There is a component that needs to be covered with potting material but it is considerably higher than the overall potting height of the cavity. The low viscosity of the

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