| ??? 06/10/07 21:19 Read: times |
#140521 - Sort of like the CP210x Responding to: ???'s previous message |
Hi Michael,
I ran into a similar problem with the Silabs CP210x USB to UART bridge. It is a 5 mm square package with 28 lands (7 per side) around the perimeter, plus an extra pad in the "pin 1" corner and a large ground/heat sink pad on the bottom. Suffice it to say I can not solder it by hand, regardless of "accomodations" made in the PWB layout. My suggestion would be to use some type of oven to reflow one-up or small lot boards. I use an old bench-top lab oven and thermocouple to manually control my thermal profile. I've also seen offered on eBay a power controller with thermocouple feedback that lets you turn a small toaster oven into a prototype reflow oven (an idea that I suggested to one of those "please give me ideas for a senior project" posts a year of so ago). I think it was about $70 (plus $40 or $50 for a toaster oven at Wal Mart). Laugh if you like, but it really does work. And even with prototypes, it is a lot less work to just place the components and reflow the board than to solder each part by hand. If you do just a few prototypes a year it's worth doing. Good luck. Joe |
| Topic | Author | Date |
| Looking for LGA Prototyping Advice | 01/01/70 00:00 | |
| Here Is The Extended Pads Idea | 01/01/70 00:00 | |
| Handworked | 01/01/70 00:00 | |
| Hoping to use iron.... | 01/01/70 00:00 | |
| Yes, | 01/01/70 00:00 | |
| Pre tin the component pads... | 01/01/70 00:00 | |
| PreTinning to Raise Device | 01/01/70 00:00 | |
| I\'d recommend a bit more effort ... | 01/01/70 00:00 | |
| I See | 01/01/70 00:00 | |
| Sort of like the CP210x | 01/01/70 00:00 | |
| LINK-good for 5 more days | 01/01/70 00:00 | |
| For two parts on two prototypes?? | 01/01/70 00:00 | |
For two parts on two prototypes?? | 01/01/70 00:00 | |
| More on SMT in the kitchen | 01/01/70 00:00 |