Electronics Forum | Tue Sep 03 18:14:35 EDT 2002 | fmonette
I have never heard about a requirement for temperature ramp-up for baking components at 125C. In general the concern for delamination with moisture sensitive components starts above 200C (peak body temp). Most important is you should bake your com
Electronics Forum | Tue Oct 31 01:32:47 EST 2006 | hanocete
thanks for your reply, actually we bake the PCB assembly prior the rework because the package was exposed for quite some time already. The baking time was 24hrs @ 125 deg.C. We notice that there were flux residues on the connectors after the baking.
Used SMT Equipment | SMT Equipment
Baking SMT on a cheap kitchen toaster oven is not difficult. You just need some patience and exploration good will. In this page you will read the manual procedure to bake SMD boards into a regular kitchen toaster oven appliance. Follows information
Industry News | 2020-05-12 12:32:14.0
Seika Machinery, Inc. today announced that it has partnered with Cogiscan to provide MSD Control for its McDry cabinets. As a result of the collaboration with Cogiscan, Seika offers precise tracking of the real-time location and remaining floor life of individual trays and reels containing MSDs – from the time they are removed from their protective dry bag, through placement, and final reflow.
Industry News | 2011-12-30 23:20:54.0
SMART Group, Europe’s largest technical trade association focusing on surface mount and related technologies, announces that it will host a workshop titled Handling Moisture-Sensitive Components & PCBs Without Failure on Wednesday, January 25, 2012 at the Stoke Mandeville Stadium in Aylesbury, Buckinghamshire, UK.
Technical Library | 2022-09-12 14:07:47.0
Unique component handling issues can arise when an assembly factory uses highly-moisture sensitive surface mount devices (SMDs). This work describes how the distribution of moisture within the molded plastic body of a SMD is an important variable for survivability. JEDEC/IPC [1] moisture level rated packages classified as Levels 4-5a are shown to require additional handling constraints beyond the typical out-of-bag exposure time tracking. Nitrogen or desiccated cabinet containment is shown as a safe and effective means for long-term storage provided the effects of prior out-of-bag exposure conditions are taken into account. Moisture diffusion analyses coupled with experimental verification studies show that time in storage is as important a variable as floor-life exposure for highly-moisture sensitive devices. Improvements in floor-life survivability can be obtained by a handling procedure that includes cyclic storage in low humidity containment. SMDs that have exceeded their floor-life limits are analyzed for proper baking schedules. Optimized baking schedules can be adopted depending on a knowledge of the exposure conditions and the moisture sensitivity level of the device.
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