Electronics Forum | Tue Jan 30 21:15:51 EST 2001 | davef
You seem to pretty far from shore to begin thinking about boats and floatation devices. Most laser trimmers are used by: * Semiconductor fabricators * Resistive component fabricators * Hybrid circuit assemblers Component fabricators and hybrid [
Electronics Forum | Tue Jan 30 11:14:25 EST 2001 | svenson
I have an idea of trimming the resistors on a teflon PCB (FR4) after mounting and soldering. Can I use a laser to cut on a smt mounted resistor while the PCB is in functional test? The goal is to balance the resistances for a telecom application. Ha
Industry News | 2003-08-27 10:58:00.0
Lead free solders and embedded passives headline professional development schedule at the 2003 IPC Annual Meeting
Industry News | 2012-05-04 09:21:15.0
As printed boards evolve and chip speeds increase, the use of microwave technology in commercial applications, such as cell phone towers and in military products, is expanding.
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Parts & Supplies | SMT Equipment
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Technical Library | 2023-01-17 17:27:13.0
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the solder joint. The degree of wetting, the microstructure (in particular the intermetallic layer), and the inherent strength of the solder all factor into the reliability of the solder joint. This paper presents experimental results on the effect of reflow profile on both 63%Sn 37%Pb (SnPb) and 96.5%Sn 3.0%Ag 0.5%Cu (SAC 305) solder joint shear force. Specifically, the effect of the reflow peak temperature and time above solder liquidus temperature are studied. Nine reflow profiles for SAC 305 and nine reflow profiles for SnPb have been developed with three levels of peak temperature (230 o C, 240 o C, and 250 o C for SAC 305; and 195 o C, 205 o C, and 215 o C for SnPb) and three levels of time above solder liquidus temperature (30 sec., 60 sec., and 90 sec.). The shear force data of four different sizes of chip resistors (1206, 0805, 0603, and 0402) are compared across the different profiles. The shear force of the resistors is measured at time 0 (right after assembly). The fracture surfaces have been studied using a scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS)
Technical Library | 2022-04-29 00:49:12.0
Tools: soldering iron, soldering iron stand, wet sponge, tweezers, rosin, solder, absorbent cotton, 95% alcohol, chip resistors, capacitors, circuit boards, 220V power supply..... http://www.leadersmt.com/gen2/1028113523/?mod=file&col_key=download
High Voltage Chip Resistors High Voltage Chip Resistors Many component engineers are faced with a circuit requirement calling for resistors having voltage ratings well above that associated with surface mount chip resistors, but below the level
| https://www.smtfactory.com/What-are-the-functions-of-the-process-equipment-of-Semi-auto-SMT-Production-Line-id3048478.html
What are the functions of the process equipment of Semi-auto SMT Production Line? - I.C.T SMT Machine English Türk dili Tiếng Việt 한국어 日本語 Italiano Deutsch
| https://www.eptac.com/blog/wired-for-success
Wired for Success: The Journey of a Master Solderer and Quality Inspector Looking for solder training standards, manuals, kits, and more
