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PCB – : : personal interface : : http://tomas.jansta.eu Tom ad6xp Wed, 03 Jan 2018 12:31:38 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.3 Printed Circuit Boards from ALLPCB http://tomas.jansta.eu/printed-circuit-boards-from-allpcb/ Wed, 03 Jan 2018 12:16:06 +0000 http://tomas.jansta.eu/?p=287

For my development projects I recently ordered 10 pieces of 100x100mm double layer PCBs from ALLPCB and the process went great through and got 13 pieces as a bonus for only $5(!) including the express DHL delivery.

Order details: 10 pcs of 100x100mm PCBs for TSSOP, QFN, DSBGA with 0.5mm pitch 0.2mm pads, 8 – 32mil tracks, vias 0.4mm/40mil drill
Drilling accuracy: +-0.05mm as expected, 0.3mm holes, perfect for this precision class
Copper etch accuracy: perfect, sharp edges and peaks, follows 6mil details
Soldermask: no overflow, resolution superb, goes exactly even between 0.5mm spaced pads, no problem with arbitrary polygons, see the attached images
HASL finish: conform, no uncovered areas
Silkscreen: perfect, 0.1mm line, 0.8mm height text clear
Electrical test:  full
Time of fabrication: 27 hours from first step (cutting) to packing
Time from placing an order to delivery doors: 7 days, delays: 2 days to clear the soldermask requirements, 2 days on local holidays DHL delivery
Factory support: fast by email, clear and constructive, thanks to Della Deng

Only one restriction was unexpected: text on the bottom soldermask layer was refused by factory, they offer text only on silkscreen, this information is not published, arbitrary soldermask polygons are allowed.

OVERALL RATING: GREAT, fast and accurate process and express delivery by DHL, unbeatable value/price ratio, recommending ALLPCB for fast turn prototype boards.

Definitely will order again next time.

 

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