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Porous ceramic vacuum chuck table or Polishing Chuck table supplied to semiconductor industry for silicon wafer dicing or finishing purposes. This product is an uniform compact frame, high strength, g
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PULANG TECHNOLOGY CO,.LTDOffers electronic manufacturing services including PCB designing, electronic contract manufacturing including electronic product design, electronic product development, electronic product repair, PCB manufacturing, electronic
Layer: 8 layers Material: FR-4 Board Thickness: 0.6mm Surface Finish: Immersion Gold 1~4u Copper Thickness: 1/3 oz Impedance, 4/4mils width/spacing Layers: 2--36layers Max manufacturing size: 640mm*1100mm Copper foil thickness: 0.5OZ-13OZ M
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Layer：4 Material：FR-4 4/4/4/4oz Thickness：2.0 Minimum hole：0.35mm Minimum Tracc/Spacing：12mil/15mil Application：power supply Layers: 2--36layers Max manufacturing size: 640mm*1100mm Copper foil thickness: 0.5OZ-13OZ Min line width/space:
Layer: 2 Material: FR-4 Board Thickness: 1.6mm Surface Finish: HAL Copper Thickness: 2/2 oz Green Solder Mask Layers: 2--36layers Max manufacturing size: 640mm*1100mm Copper foil thickness: 0.5OZ-13OZ Min line width/space: 3mil/3mil Min
Layer: 6 layers Material: FR-4 Board Thickness: 1.0mm Surface Finish:ENIG Copper Thickness: 1 oz all layers Blind via L1~L2 and L1~L3 Layers: 2--36layers Max manufacturing size: 640mm*1100mm Copper foil thickness: 0.5OZ-13OZ Min line width
600V *RO4350B *RO4003C Dielectric material & Stack up requirement FR-4(no copper): 0.05-3.2mm for option Prepreg type: 7628H(7630), 7628(43%), 7628(41%), 2116HR, 2116, 2113, 1080 and 1060 for option Copper
Technical Library | 2023-08-04 15:27:30.0
A designed experiment evaluated the influence of several variables on appearance and strength of Pb-free solder joints. Components, with leads finished with nickel-palladium-gold (NiPdAu), were used from Texas Instruments (TI) and two other integrated circuit suppliers. Pb-free solder paste used was tin-silver-copper (SnAgCu) alloy. Variables were printed wiring board (PWB) pad size/stencil aperture (the pad finish was consistent; electrolysis Ni/immersion Au), reflow atmosphere, reflow temperature, Pd thickness in the NiPdAu finish, and thermal aging. Height of solder wetting to component lead sides was measured for both ceramic plate and PWB soldering. A third response was solder joint strength; a "lead pull" test determined the maximum force needed to pull the component lead from the PWB. This paper presents a statistical analysis of the designed experiment. Reflow atmosphere and pad size/stencil aperture have the greatest contribution to the height of lead side wetting. Reflow temperature, palladium thickness, and preconditioning had very little impact on side-wetting height. For lead pull, variance in the data was relatively small and the factors tested had little impact.
Technical Library | 2024-04-08 15:46:36.0
A designed experiment evaluated the influence of several variables on appearance and strength of Pb-free solder joints. Components, with leads finished with nickel-palladium-gold (NiPdAu), were used from Texas Instruments (TI) and two other integrated circuit suppliers. Pb-free solder paste used was tin-silver-copper (SnAgCu) alloy. Variables were printed wiring board (PWB) pad size/stencil aperture (the pad finish was consistent; electrolysis Ni/immersion Au), reflow atmosphere, reflow temperature, Pd thickness in the NiPdAu finish, and thermal aging. Height of solder wetting to component lead sides was measured for both ceramic plate and PWB soldering. A third response was solder joint strength; a "lead pull" test determined the maximum force needed to pull the component lead from the PWB. This paper presents a statistical analysis of the designed experiment. Reflow atmosphere and pad size/stencil aperture have the greatest contribution to the height of lead side wetting. Reflow temperature, palladium thickness, and preconditioning had very little impact on side-wetting height. For lead pull, variance in the data was relatively small and the factors tested had little impact.
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