We took the BOM for the PCB to a local contract manufacturer in order to get a quote for building some of these devices for prototyping and beta testing. The CM called us and wanted to know who put this BOM together and why these specific materials were chosen for the PCB because they were not standard at all. They said they were so out of the norm that the cost for the boards were over 50x the cost of a normal board.
Here is what we were quoted:
PCB PN: 1401063
- FR4 170 TG MATERIAL
- 2U" ENIGN FINISH
- 0.062" +/-0.007"BOARD THICKNESS
- CONTROLLED IMP
- L1-2 & L7-8(LASER DRILL BLIND VIAS
- L2-7 MECHANICAL DRILL
- L8-4 (12 PLACES) BACK DRILL
RoHS Compliance ,Impedence Control ,Blind/Buried Vias
Qty – Price Per Unit
5 – $672.00
10 – $351.80
25 – $159.68
Our CM states that they have never seen these requirements before and cannot understand why there would be a need to use such expensive materials for this board.
Can anyone at Sierra advise on what the thoughts were around these specifications? Were you aware of the cost of this design specification?
Please advise asap.
Without a more reasonable PCB design, there is no way our company (or any company for that matter) could rationalize building this device.
Thanks in advance for the help.