24 0.2mm pitch results

Electronics Forum: 0.2mm pitch (Page 1 of 3)

PQFP with pitch of 0.4 mm

Electronics Forum | Tue Jan 30 21:14:26 EST 2001 | davef

Suggestions are: * Limit pad width to 0.008" [0.2mm] * Use IPC-7525 Stencil Design Guidelines * Avoid Type 4 pastes, if you can * Slow down your print head to 0.63"/sec [16 mm/sec] * Consider the suggestions on printing by rpereira in the past

super fine pitch paste & dispensing questions

Electronics Forum | Mon Aug 16 13:38:35 EDT 2010 | rl

i would like to request some advice on manually dispensing paste for super fine pitch components. first some background. i am a small design house and specialize in sub-miniature prototypes for avionics. so far, i have mostly used stainless steel st

Re: 16 mil pitch QFP solder bridge

Electronics Forum | Sun Oct 08 00:18:05 EDT 2000 | Arturo

We are working with a 16mil TSOP Land width=0.2mm(8mil) and use: 1.Type 4 particle size solder paste. 2.Laser cut electropolished stencil: Aperture width=0.19mm (we tried lower than this but had solder insufficiency). Thickness=0.005"(130 microns)

super fine pitch paste & dispensing questions

Electronics Forum | Mon Aug 16 14:43:44 EDT 2010 | dan_ems

Hello, i don't know if is possible to dispense paste but for reduction of cost we use a diferent type of stencils, from aluminium of 0,2 mm, purchased from a typography of newspapers. Ofcourse the pcb for what we use this stencil are simple. But th

Stencil Design for BGA with 0.2 mm Diameter Pad and 0.4 mm pitch

Electronics Forum | Tue Nov 12 00:49:37 EST 2019 | myke03o

I am optimizing a stencil opening for BGA with 0.4mm pitch and pad diameter of 0.2mm. Can anyone advice of stencil thickness and stencil opening I can use in order to have a good paste release. Thanks for all your answers.

Stencil Design for BGA with 0.2 mm Diameter Pad and 0.4 mm pitch

Electronics Forum | Thu Nov 14 10:52:56 EST 2019 | jandon

Maybe something like this could work?

Stencil Design for BGA with 0.2 mm Diameter Pad and 0.4 mm pitch

Electronics Forum | Thu Nov 14 18:25:07 EST 2019 | myke03o

Hi Jandon, Thanks, I will try it on my DOE.

Stencil Design for BGA with 0.2 mm Diameter Pad and 0.4 mm pitch

Electronics Forum | Thu Nov 14 21:47:41 EST 2019 | sssamw

Yes, 0.25x0.25 square could work @0.1 thickness, use nano-coating or electroform stencil for better solder paste release.

Stencil Design for BGA with 0.2 mm Diameter Pad and 0.4 mm pitch

Electronics Forum | Thu Nov 14 22:24:43 EST 2019 | dman97

Use a type 5 solder for maximum paste release.

64 pin 10mm QFP w/ 0.5mm lead pitch & E3 Coating

Electronics Forum | Wed Aug 21 20:11:34 EDT 2002 | mitch

We are going to begin using a 64 pin 10mm QFP with 0.5mm lead pitch. I was recently asked if we need to purchase our PCB with E3 coating instead of tinned pads when using the .5 pitch. The concept being suggested is that the E3 coating will give us b

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