DIY Automated BGA Reballing Station - Page 1
Forum section: electronics / projects

author: MathWizard
author_rank: Super Contributor
timestamp: February 24, 2023, 10:33:02 pm
content: Has anyone made a BGA station like this version ? Looks pretty good, if you have the metal boxes, and clamps and holders, etc. For the lower heater, the guy uses a REX-C100 PID controller and SCR module.For the top heater, he uses an IR6500, IR heater unit from a real machine I think. I see cheap 450W ceramic heaters on amazon, just the 120mmx120mm type plates. Are they the same type of thing, and you just need basically another SCR and controller? Could you just basically mount a (12cm)^2 IR heater, in an insulated tin can on a stand ?So has anyone made a similar version, and about what did it cost? I really want to copy something like this, and get all the parts in 1 shot, including the cases. Over the years, I threw out a few old printer parts, I wish I kept some metal rods, to us for the PCB holders.If I could, I'd use a computer ATX PSU, for a LV heater. I have lots of decent ones, not low quality junk either.DIY Automated BGA Reballing Station. Make Your Own At Home! From Low Budget to Mid Budget.

author: thm_w
author_rank: Super Contributor
timestamp: February 24, 2023, 10:44:30 pm
content: Quote from: MathWizard on February 24, 2023, 10:33:02 pmIts the same kind of thing, you can buy the IR6500 top heater for not much money:https://www.aliexpress.us/item/2251832680276217.htmlNote though it is 220V so not easily usable in canada.What board sizes are you dealing with? You can get a decent IR preheater for $150-200 with built in temperature control. Then come up with your own solution for the top side.

author: MathWizard
author_rank: Super Contributor
timestamp: February 24, 2023, 11:44:09 pm
content: Yeah I can't use Aliexpress from some banking reason. For me, the only BGA work I'd be doing is computer repair, so no bigger than a mobo BGA or GPUFor now I could maybe do what he did, get or make the pre-heater 1st, and then maybe my hotair station on top would be enough for now.I have a toaster oven that works. IDK if people mod them with a hole in the top, to act as a constant under-heater. I used it to pre-heat a remove and BGA chip from a modem, but I could not get a GPU hot-enough. I didn't want to pre-heat anymore than I did either.Will all the SMD parts fall off the bottom of a PCB if it gets too hot in an oven ? I'm guessing the surface tension can't hold up much.I should get a PID box and SCR, and try it on the toaster oven 1st too.But if these parts cost this much on amazon/ali, IDK how much anyone trusts them or if I'll get fakes or not.

author: thm_w
author_rank: Super Contributor
timestamp: February 25, 2023, 12:51:30 am
content: Aliexpress works with paypal now, so that should be fine with any bank or CC.If it gets way too hot yes the parts on the bottom will fall off. But normally you'd preheat to a low temperature that is nowhere near the melting point (eg 100C).Toaster oven, I guess you can use it but cutting a hole in it kind of ruins it. If you wanted a really cheap preheater you could probably try a skillet at the second hand store for $5.A lot of the SSR's on Amazon are fake. With a preheater it might not be a huge issue if you ensure the case is grounded, and power level is not too high.A genuine 10A SSR can be had for $7:https://canada.newark.com/multicomp-pro/mc002311/solid-state-relay-10a-4-32vdc/dp/50AC9814Or a 25A is $12:https://canada.newark.com/multicomp-pro/mc002302/solid-state-relay-25a-90-280vac/dp/48AC9125

author: daisizhou
author_rank: Super Contributor
timestamp: February 25, 2023, 05:45:53 am
content: There is no preheated ceramic around this BGA, if you want to solder some large BGA chips, it may damage the pcb because the temperature difference is too large.I mean just heating (high temperature) at a single location can damage the PCB, because there is thermal expansion and contraction,Regular BGA has preheating and soaking parts,It can make the PCB heat evenly and reduce the probability of failure