Circuits Assembly Online Magazine - Current Issue

Products

PA0766NLT Power Bead integrated ferrite-bead inductor has two independent inductors integrated into a single core structure and part number with no magnetic coupling between them. Can be used in any multi-phase circuit application, including double data rate (DDR) memory, multi-phase CPU power and other desktop, portable and server computing applications, as well as 2- and 4-phase telecommunications power systems.

Replacing two surface-mount iron inductors with one integrated inductor reportedly results in: 20% savings of board space; 47% lower direct current resistance (DCR); 80% lower core loss; reduced AC proximity loss in the winding; and cost reduction of 25%.

Footprint is 0.55 x 0.53 x 0.28" (14.0 x 13.5 x 7.0 mm).

Available in four different inductance values and current ratings from 296 nH at 38 Amps peak current per phase to 568 nH at 18.5 Amps peak current per phase. Direct current resistance is 0.9 milliohms maximum per phase. Rated for operation up to 130°C; RoHS compliant.

Pulse, a Technitrol Co., pulseeng.com

Multicore LF318 is a halide-free, no-clean, pin-testable, lead-free solder paste that promises broad process windows for printing and reflow. Developed to appeal to multinational manufacturers wishing to qualify a single solder paste with reliable, repeatable performance within the assembly environment.

Reportedly achieves a high degree of coalescence upon reflow even after 72 hours at 27° C and 80% RH, and in testing to IPC ANSI/J-STD-005 and JIS-Z-3284 standards displays excellent resistance to slump. Has low paste wastage - the result of superior tack life and an open time greater than 24 hr. - and resistance to component movement during high-speed placement, through its high initial tack force of 2.0g/mm².Suitable for reflow in air or nitrogen, said to display excellent solderability on a range of surface finishes, including Ni/Au, immersion Sn, immersion Ag and OSP copper. Soft, non-stick, colourless residues remain after reflow, easing visual inspection and permitting reliable in-circuit testing.

Available in lead-free alloys 96SC (SAC387) and 97SC (SAC305, and a tin-lead version.

Henkel, henkel.com

SemiTouch, a semiautomatic stencil/screen printer is engineered for precision and consistency in paste deposition. Offers a self-diagnostic program for instant troubleshooting.

Has print area of 16 x 20", offers double squeegee assembly and multiple print modes. Includes servo programmable squeegee speed and positions; controlled vertical stencil lift; last board recall; an infinite board storage library; interchangeable squeegee heads; runtime diagnostics; programmable snap off delay, squeegee up delay and squeegee offset; floating or fixed squeegee holders; and more.

Registration repeatability is ±0.005", with stencil separation gap range of 0.5" and a squeegee pressure of 1 to 65 psi.

Milara Inc., milarasmt.com