An alternative to liquid epoxy for high-volume epoxy sealing applications, Uni-form epoxy preforms are one-part epoxy resins that are solid at room temperature. When heated, they melt and cure, forming a consistent seal that protects components from dust, moisture, oil, flux, solvents, conformal coatings, and other contaminants.
Close tolerances on preform configurations, consistent pre-mixed ratios of resin to catalyst, and consistent viscosity from beginning to end of batch ensure uniform results.
Can be dispensed as rapidly as 200 to 600 parts/min. with little or no operator training; extensive operator experience is not required for uniform results. Said to eliminate pot-life concerns and costly cleanup procedures. Available in a range of shapes, sizes and materials.
Multi-Seals, multi-seals.com
Close tolerances on preform configurations, consistent pre-mixed ratios of resin to catalyst, and consistent viscosity from beginning to end of batch ensure uniform results.
Can be dispensed as rapidly as 200 to 600 parts/min. with little or no operator training; extensive operator experience is not required for uniform results. Said to eliminate pot-life concerns and costly cleanup procedures. Available in a range of shapes, sizes and materials.
Multi-Seals, multi-seals.com
Servo-Flo 505 Fixed-Ratio Meter System is for automated, robotic or manual dispensing applications. This single-servomotor dispensing system allows fixed and variable dispense rates while providing on-ratio materials that meet suppliers’ specifications.
Three levels of operator interface controls are available; these quickly set output flow rates and adjust material volume settings. The automation or the operator can select different stored flow and volume programs.
Has positive rod displacement metering, dispenses precise bead profiles or precision volumetric shots. Flow rates are varied on-ratio during the dispense cycle to provide different shot flows, bead diameters and tip speeds.
Accepts low- to high-viscosity materials and is supplied by pumps or pressure tanks. Meter, control panel and supply can be floor-mounted, portable-cart mounted or enclosed in a cabinet.
Three levels of operator interface controls are available; these quickly set output flow rates and adjust material volume settings. The automation or the operator can select different stored flow and volume programs.
Has positive rod displacement metering, dispenses precise bead profiles or precision volumetric shots. Flow rates are varied on-ratio during the dispense cycle to provide different shot flows, bead diameters and tip speeds.
Accepts low- to high-viscosity materials and is supplied by pumps or pressure tanks. Meter, control panel and supply can be floor-mounted, portable-cart mounted or enclosed in a cabinet.
Sealant Equipment & Engineering, sealantequipment.com
The effectiveness of board level EMI/RFI shielding depends on many factors: the design of the shielding can, material choice, thickness, venting, method of attachment and the ‘maximum linear dimension’ (the longest contiguous hole or slot). This maximum opening size is a function of the frequency spectrum of the device being shielded and of the attenuation you are trying to achieve.
Profiled and folded shielding cans offer many benefits, including bespoke design, exceptional co-planarity, low tooling costs etc., but one drawbacks is the corner seam, which can act as an emitter antenna if it is not folded and mounted with care. This corner seam can be soldered for complete integrity in high frequency applications but much of the time, the need is simply to reduce the maximum linear dimension.
A new finger joint arrangement on the corner seam allows two adjacent walls to interlock along the corner seam.
Profiled and folded shielding cans offer many benefits, including bespoke design, exceptional co-planarity, low tooling costs etc., but one drawbacks is the corner seam, which can act as an emitter antenna if it is not folded and mounted with care. This corner seam can be soldered for complete integrity in high frequency applications but much of the time, the need is simply to reduce the maximum linear dimension.
A new finger joint arrangement on the corner seam allows two adjacent walls to interlock along the corner seam.
The Quiet Corner design reportedly improves noise attenuation and the mechanical stability of the shielding can.
Ultrasonic Systems will demonstrate the Optima Fluxing System at Productronica next month, in Hall A4 Booth 158. A new Ultra-Spray head produces a more vertical spray pattern, ensuring through-hole penetration when using water-based VOC-free fluxes.
Ultrasonically atomizes VOC-free flux into a fine mist, and then traverses the spray under the circuit at programmable speeds, ensuring flux penetration of the plated-through holes.
Can process circuit boards up to 24” (61 cm) wide and 0.250” (6.35 mm) thick, with plated through holes of 0.015” (0.381 mm) in diameter.
Optima Fluxing System, ultraspray.com.
Ultrasonically atomizes VOC-free flux into a fine mist, and then traverses the spray under the circuit at programmable speeds, ensuring flux penetration of the plated-through holes.
Can process circuit boards up to 24” (61 cm) wide and 0.250” (6.35 mm) thick, with plated through holes of 0.015” (0.381 mm) in diameter.
Optima Fluxing System, ultraspray.com.
Micro-Line Digital Dispensing Head consists of a high-speed liquid metering valve and a precision nozzle.
Applies conformal coatings in precise lines or dots down to 1 mm with the liquid flow rate set electronically with the Prism software. The coating is applied at a distance from 5 to 15 mm between the nozzle tip and the substrate. The technology is said to be more effective than conventional needle dispensing.
Ultrasonic Systems, ultraspray.com
Applies conformal coatings in precise lines or dots down to 1 mm with the liquid flow rate set electronically with the Prism software. The coating is applied at a distance from 5 to 15 mm between the nozzle tip and the substrate. The technology is said to be more effective than conventional needle dispensing.
Ultrasonic Systems, ultraspray.com
GETEK HR high speed, low loss laminates and prepregs are CAF resistant, lead-free assembly compatible materials said to deliver enhanced thermal performance and high reliability, while enabling PWB fabricators to experience substantially improved FR-4 processability.
Has low dielectric constant, low loss and low z-axis expansion.
“GETEK HR, with its low z-axis expansion and high decomposition temperature, is well suited for thick multilayer PWBs requiring improved electrical performance, as well as high speed and low loss products that will be assembled in a lead-free process compliant with the EU’s RoHS directive.” said Ed Kelley, director of OEM marketing.
With manufacturing in both the U.S. and Taiwan, is readily available in prototype to high-volume quantities. Customers UL approval for manufacturing with GETEK will also be able to use GETEK HR.
Used for a broad range of applications that include telecommunications equipment, high speed computing and storage, test and measurement equipment, medical electronics, IC substrates, and RF and wireless electronics.
Polyclad Laminates, polyclad.com
Has low dielectric constant, low loss and low z-axis expansion.
“GETEK HR, with its low z-axis expansion and high decomposition temperature, is well suited for thick multilayer PWBs requiring improved electrical performance, as well as high speed and low loss products that will be assembled in a lead-free process compliant with the EU’s RoHS directive.” said Ed Kelley, director of OEM marketing.
With manufacturing in both the U.S. and Taiwan, is readily available in prototype to high-volume quantities. Customers UL approval for manufacturing with GETEK will also be able to use GETEK HR.
Used for a broad range of applications that include telecommunications equipment, high speed computing and storage, test and measurement equipment, medical electronics, IC substrates, and RF and wireless electronics.
Polyclad Laminates, polyclad.com
Press Releases
- PARMI Enhances Support for Brazilian Electronics Manufacturers with New Local Partnership
- ZESTRON Expands Capabilities with Addition of the EPS by i-Tech AG 75 Pallet Cleaning System
- BMK strengthens its coating expertise for electronic assemblies with a technology initiative
- Altus Group Strengthens Leadership with New Operations Director