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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Specializing in SMD, AX, & RAD component tape & reel packaging, Lead forming, baking and hot solder dipping.
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The leader in component automation preparation since 1983. Surface mount, axial & radial tape and reel, programming, baking, distribution of all materials used in these processes. ISO9001-2008, WBE
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OX3.com provides engineering, processing and wholesaling of packaging required for the storage, transport, or handling of electronic devices and components. These are typically tapes, trays, tubes, totes, reels or other fixtures.
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Moisture-proof Humidity&Drying Solutions Our company is specialized in manufacturing dry cabinet.drying oven.We have Dry Cabinet,Nitrogen Cabinet,Baking Cabinet,Air Blast Drying Oven and Vacuum Oven.
Career Center | , South Jersey USA | Production
I know this has nothing to do with electronics, but if any of you in New Jersey, or Philly, want to start your own Italian Deli Bakery business, here's a chance to get into a restaurant. I wish I had a company that would let me sell them products o
ATRON® SP 200 is a water-alkaline surfactant cleaner, specifically developed to remove baked-on fluxes from solder pallets and condensation traps. ATRON® SP 200 can be used for the removal of unsoldered solder pastes from SMT stencils. The cleaner ca
Technical Library | 2024-01-08 18:36:01.0
The following aims lie behind the investigations described: The circuit board is an integrated structure made of metal and plastic. Like most integrated components enclosed in plastic, it absorbs water. When it is rapidly heated as, for example, in soldering technology temperature processes, it is a well known fact that the water will evaporate abruptly, leading to destruction. It is therefore essential that the circuit board be dried before these soldering processes. Circuit board manufacturers are extremely hesitant at providing instructions on drying their circuit boards. Information from the ZVEI [1] should also be regarded critically. The cardinal problem is the high temperature which is recommended for baking. If this is applied, the result is often de-lamination and distortion of the circuit boards. Corrosion and the formation of intermetallic phases of the metallic surfaces are also to be expected. The following investigates whether gentle drying at 45°C or 60°C and at low relative humidity achieves the same result as baking at high temperatures. The industry provides novel dry cabinets which are suitable for rapid drying at relative humidities below one percent.
Reflow cycle - runs the oven through the pre-defined temperature profile.> Bake cycle - used to drive the moisture from moisture-sensitive components.>
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Dr. Storage offers the most diverse selection of Dry Cabinets in the industry. The latest Dr. Storage cabinets include cabinets drying at 1% RH, drying at less than 1% RH and baking at 60°C. Cabinets are plug and play so they are up and running easil
