Electronics Forum: pads for 0402 (Page 1 of 57)

0402

Electronics Forum | Tue Jun 07 16:25:29 EDT 2005 | davef

We use a 0.012 inch gap betweem 0402 pads.

0402

Electronics Forum | Thu May 29 14:35:37 EDT 2008 | rdmundo

Gents, We've been using a round 1:1 aperture for a 5 mils thickness on our stencil design on 0402 and recently, IPC guidelines recommend oblong, homeplate or reverse homeplate. I believed the PCB pad for 0402's area within the recommended size/dimen

0402

Electronics Forum | Tue Jun 07 15:00:10 EDT 2005 | glenda

what about spacing between pads center to center on 0402.

0402

Electronics Forum | Thu May 29 16:37:57 EDT 2008 | aj

10% reduction on 5 thou. Gap between pads is also critical with 0402's.

0402

Electronics Forum | Thu May 29 17:19:51 EDT 2008 | dyoungquist

On 0402s we use 20x25 mil pads with a 15 mil gap between the pads on the pcb with ENIG finish, 5 mil stencil with a 1:1 aperture (20x25 mil) and SAC305 lead free solder paste. We very rarely see any tombstoning on 0402s using this setup.

0402

Electronics Forum | Tue Jun 07 19:24:44 EDT 2005 | russ

We use a .010" - .012" gap with .020" square pads.

Round pads for 0402's. Is it feasible?

Electronics Forum | Thu Mar 19 12:22:54 EDT 2009 | mhjohnso

While investigating a routing study for a new bga device, I found the vendor used round 20 mil pads on 0402 decoupling caps.This allows fitting the caps between break out vias on their 1mm pitch BGA. Round pad gives about 8 mils diagonally from pin t

Stencil Design for Resistor Net Array 0402

Electronics Forum | Wed Mar 26 17:09:52 EST 2003 | Jos�

For the Resistor Network Array SMT 0402- 8 pads I'm using a Stencil 5 mils Th. with the next appertures : Corners-biggers pads: 24 x 12 mils Center pads : 9 x 24 mils This Appertures are working excelent for the RN's that his appertures are parallel

Best Land Pattern design for 0402 Resitors?

Electronics Forum | Fri Jan 14 11:16:45 EST 2005 | Dan Gosselin

I have heard of people using a round pad or Home plate design to decrease the incidence of tombstoning on 0402's Anyone have any practical experience on this or is everyone just using the IPC 782 recommended land pattern (28mil x 33mil rectangle pad

Best Land Pattern design for 0402 Resitors?

Electronics Forum | Mon Jan 17 17:56:14 EST 2005 | russ

Haven't noticed any major difference between C's and R's. Our biggest problem is feeders that will advance to the same location and leave the part in the pocket. We see "billboarding" on R's when the feeder isn't working right. If you have a good

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