Industry News | 2018-10-18 08:29:16.0
How to Prevent Short Circuits to Ground in QFN Components?
Industry News | 2014-05-22 11:36:25.0
Indium Corporation's Derrick Herron, technical support engineer, will serve as an expert presenter at ZESTRON’s Assembly, Cleaning, and Reliability Hands-on Workshop on June 10 in Franklin, Mass.
Industry News | 2013-11-06 09:41:35.0
Indium Corporation's Sze Pei Lim, Technical Manager - Asia-Pacific Operations, will present at the SMTA Penang Expo and Tech Forum, November 8 in Penang, Malaysia.
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Flason SMT GKG GT++ SMT Stencil Printer Gross Power: 50W Voltage: 220V size: 1240*1410*1500mm Weight:1100Kg Product description: GKG GT++ SMT Stencil Printer Fully Automatic-Good Price! Good Quality! Good Service! GKG GT++ automatic tin paste
Technical Library | 2018-09-26 20:33:26.0
Bottom terminated components, or BTCs, have been rapidly incorporated into PCB designs because of their low cost, small footprint and overall reliability. The combination of leadless terminations with underside ground/thermal pads have presented a multitude of challenges to PCB assemblers, including tilting, poor solder fillet formation, difficult inspection and – most notably – center pad voiding. Voids in large SMT solder joints can be difficult to predict and control due to the variety of input variables that can influence their formation. Solder paste chemistries, PCB final finishes, and reflow profiles and atmospheres have all been scrutinized, and their effects well documented. Additionally, many of the published center pad voiding studies have focused on optimizing center pad footprint and stencil aperture designs. This study focuses on I/O pad stencil modifications rather than center pad modifications. It shows a no-cost, easily implemented I/O design guideline that can be deployed to consistently and repeatedly reduce void formation on BTC-style packages.
Technical Library | 2015-07-14 13:19:10.0
Bottom terminated components (BTC) are leadless components where terminations are protectively plated on the underside of the package. They are all slightly different and have different names, such as QFN (quad flat no lead), DFN (dual flat no lead), LGA (land grid array) and MLF (micro lead-frame. BTC assembly has increased rapidly in recent years. This type of package is attractive due to its low cost and good performance like improved signal speeds and enhanced thermal performance. However, bottom terminated components do not have any leads to absorb the stress and strain on the solder joints. It relies on the correct amount of solder deposited during the assembly process for having a good solder joint quality and reliable reliability. Voiding is typically seen on the BTC solder joint, especially on the thermal pad of the component. Voiding creates a major concern on BTC component’s solder joint reliability. There is no current industry standard on the voiding criteria for bottom terminated component. The impact of voiding on solder joint reliability and the impact of voiding on the heat transfer characteristics at BTC component are not well understood. This paper will present some data to address these concerns.
Industry News | 2010-10-04 15:37:18.0
MARTIN will demonstrate the Prebump/Reball 03.1 unit at the upcoming Central Texas Electronics Association (SMTA/IMAPS) Expo & Tech Forum, scheduled to take place, October 7, 2010 at the Norris Conference Centers in Austin, TX.
