Parts & Supplies | Pick and Place/Feeders
Supply&repair juki spare parts at l lower price: JUKI 710(720) CARRY UNIT E86127150B0 JUKI 710(720) CPU CARD E8601715AA0 JUKI 730(740) CARRY BOARD E86067210A0 JUKI 730(740) DC SERVO DRIVER E86037210A0 JUKI 750(760) AC SERVO CARD E86027210A0
Parts & Supplies | Pick and Place/Feeders
Supply&repair juki spare parts at l lower price: JUKI 710(720) CARRY UNIT E86127150B0 JUKI 710(720) CPU CARD E8601715AA0 JUKI 730(740) CARRY BOARD E86067210A0 JUKI 730(740) DC SERVO DRIVER E86037210A0 JUKI 750(760) AC SERVO CARD E86027210A0
Industry News | 2018-10-18 08:59:34.0
PRINCIPLE OF SURFACE MOUNT PROCESS(SMT PROCESS)
Parts & Supplies | Pick and Place/Feeders
JUKI 2050/2060/2070/2080 IO CONTROL CARD PN:40001943 Supply all juki spare parts at a lower price. pls contact us if you have interested. JUKI 40003318 KEYBOARD SP ASM www.greensmt.com JUKI 40003319 MAGNETIC SCALE Y(E) SHENZHEN GREEN TECHNOLOGY
Electronics Forum | Wed Mar 28 11:29:49 EST 2001 | gcs
I've used below: WEIGTH OF COMPONENT IN GRAMS ---------------------------- TOTAL PAD MATING AREA IN SQUARE INCHES GRAMS PER SQUARE INCH MUST BE EQUAL/GREATER THAN 30 FOR SECONDARY MOUNTING.
Electronics Forum | Thu Oct 15 11:04:28 EDT 2009 | spitkis2
Thanks Jim. Pressing the QFN into paste was what I thought of, just wasn't sure if it would cause solder paste to be pressed outside the pad area and possibly bridge with an adjacent pad. Do you recall the ratio of paste coverage to the pad area?
Electronics Forum | Tue Sep 11 09:13:01 EDT 2001 | davef
Like most things in electronic assembly, this is not astrophysics. People have pasted boards, placed components, turned the board up-side down, run the board through a reflow oven, and generalized about which components: * Fall off the board. * Don
Electronics Forum | Mon Apr 28 09:34:37 EDT 2003 | davef
Double sided weight of component to total pad mating area ratio: 30 gm per sq inch (50 mgm per mm2) Go to the sites of these consultant-people for additional background [I'm not sure exactly where on these sites to look, but both are laden with goo
Electronics Forum | Mon Jun 30 16:35:13 EDT 2003 | davef
Hi Steve We don�t double reflow this part. We wouldn�t consider it without a fixture or some other support. You know that sound, the almost involuntary sound that patrons in a restaurant make when a waiter drops a glass or a tray? It�s kind of an
Electronics Forum | Sat Mar 21 12:19:51 EST 1998 | David Pick
I have read somewhere of a ratio of component weight vs. surace contact area rule for double reflow soldering. This ratio is the maximum weight vs. surface tension to hold a component on during the second reflow. With this number, a person could weig