SMTpads - surface mount proto PCBs /BPS Square and rectangular sea-of-pad grids for 0402, 0603, 0805, 1206, SOICs and other SMT parts. Features A sea of pads pattern allows SMT components of various sizes and pitches to be mounted. Larger components can span pads. Bridge pads or solder wires on pads to create traces wherever they are needed. 3 Patterns Available 50x50 = 50 mil (0.050) square pads 100x100 = 100 mil square pads 100x200 = 200 x 100 mil rectangular pads 3 Sizes Available Size 1 = 50 x 80mm (1.97 x 3.15in) Size 2 = 100 x 80mm (3.94 x 3.15in) Size 3 = 100 x 160mm (3.9 x 6.3in) SOIC (50 mil pitch) can be soldered directly to 50x50 pad pattern without adapters. DIP (100 mil pitch) ICs can be used with all. Solid ground plane on reverse side provides easy ground connections and help achieve low noise in circuits. Unplated holes to the ground plane are spaced 4 pads apart for easy connection to the ground plane. Just insert a wire and solder both sides. Lead free etched copper PCB with an anti-tarnish coating to preserve solderability. RoHS compatible. Specifications High-quality etched FR4 glass-epoxy circuit board. loz/ft* copper with an anti-tarnish coating for easy soldering. Lead free and RoHS compatible. 0.031" (0.79mm) holes (unplated) for connections to ground plane or pads on the opposite side (see plated option section). Please see table on page 3 for BPS part #s. 50x50 Board Pattern Grid of 42 mil square pads on 50 mil centers BusBoard Prototype Systems - Built for designers www.BusBoard.com sales@busboard.com BPS-MAR-(SPx SMTpads Family)-001 Rev 4.00100x100 Board Pattern Grid of 92 mil square pads on 100 mil centers BusBoard Prototype Systems - Built for designers www.BusBoard.com sales@busboard.com BPS-MAR-(SPx SMTpads Family)-001 Rev 4.00BPS SMT Board Part Numbers Part# Size |Description Thick SP1-50x50-G Size1 |SMTpads-Size1, 50x50mil Pads, Unplated Holes, 1/16" Thick 1/16" SP2-50x50-G Size2 |SMTpads-Size2, 50x50mil Pads, Unplated Holes, 1/16" Thick 1/16" SP2-50x50-2S Size2_|SMTpads-Size2-2sided, 50x50mil Pads on 2 Sides, Unplated Holes, 1/16" Thick 1/16" SP3T-50x50-G Size3_|SMTpads-Size3U-Thin, 50x50mil Pads, Unplated, 1/32" Thin (formerly SP3UT) 1/32" SP3T-50x50-G-PTH| Size3 |SMTpads-Size3U-Thin, 50x50mil Pads, Plated Holes, 1/32" Thin 1/32" SP1-100x100-G Size1 |SMTpads-Size1, 100x100mil Pads, Unplated Holes, 1/16" Thick 1/16" SP2-100x100-G Size2 |SMTpads-Size2, 100x100mil Pads, Unplated Holes, 1/16" Thick 1/16" SP3-100x100-G Size3 |SMTpads-Size3U, 100x100mil Pads, Unplated Holes, 1/16" Thick 1/16" SP1-200x100-G Size1 |SMTpads-Size1, 200x100mil Pads, Unplated Holes, 1/16" Thick 1/16" SP2-200x100-G Size2 |SMTpads-Size2, 200x100mil Pads, Unplated Holes, 1/16" Thick 1/16" SP3-200x100-G Size3_|SMTpads-Size3U, 200x100mil Pads, Unplated Holes, 1/16" Thick 1/16" SMT3U Size3 |SMTboara-Size3, SOIC Footprints, 200x100mil Pads, Unplated Holes, 1/16" Thick | 1/16" SMT3U-PTH Size3_|SMTboarad-Size3, SOIC Footprints, 200x100mil Pads, Plated Holes, 1/16" Thick __| 1/16" SMT3UT Size3_|SMTboard-Size3-Thin, SOIC Footprints, 200x100mil Pads, Unplated, 1/32" Thin _ | 1/32" See the SMT3U datasheets for more information on these boards. 2-Sided Pads (2S Option) Most boards have a solid ground plane on the bottom side. This makes it easy to make ground connections and it helps to achieve low noise in circuits. The SP2-50x50-2S board has square pads on both sides. Thin PCB (T option) Most SMT Pads boards are 1/16" thick (1.6mm). Some boards are available in a 1/32" thin (0.8mm) version. See the part# table for thicknesses. Plated Holes (PTH Option) Most SMT Pads boards have unplated holes so that the top pad can be used for any purpose. It can be connected to ground only when a ground connection is needed by inserting a wire and soldering both sides. Some designers prefer to have all of the vias connected to the ground plane, and the Plated option boards were created for this purpose. The SMT3U-PTH and the SP3T-50x50-G-PTH boards have plated holes connecting top side pads to the ground plane. Note: SP3UT was the previous name of the SP3T-50x50-G-PTH board. The plating can be drilled out with a small bit to disconnect the pad from ground if required. BusBoard Prototype Systems - Built for designers www.BusBoard.com sales@busboard.com BPS-MAR-(SPx SMTpads Family)-001 Rev 4.00SMT Pads Photos 50 x 50 mil pads - Size 1 (50 x 80mm 50 x 50 mil pads - Size 2 (100 x 80mm 100 x 100 mil pads -Size 1 (50x80mm) | 100 x 100 mil pads - Size 2 (100 x 80mm ft 200 x 100 mil pads -Size 1 (50x8Omm) | 200 x 100 mil pads - Size 2 (100 x 80mm BusBoard Prototype Systems - Built for designers www.BusBoard.com sales@busboard.com BPS-MAR-(SPx SMTpads Family)-001 Rev 4.0050 x 50 mil pads - Size 3 (100 x 160mm | ye Prototype 1B UF systems = 100 x 100 mil pads - Size 3 (100 x 160mm y Prototype BusBoard Prototype Systems - Built for designers www.BusBoard.com sales@busboard.com BPS-MAR-(SPx SMTpads Family)-001 Rev 4.00200 x 100 mil pads - Size 3 (100 x 160mm BusBoard: | , grotenrns in Bottom Ground Plane e Example srerso* Shown, Formerly SP3UT) : BusBoart E Prototype : w Sys tems: ; Bottom Side Ground Plane ; 5 Unplated Holes - Insert a Wire and Solder for a * Ground Plane Connection * SP3UT-SMTpads'Thin * www.BusBoard.com BusBoard Prototype Systems - Built for designers www.BusBoard.com sales@busboard.com BPS-MAR-(SPx SMTpads Family)-001 Rev 4.00SMT Board Construction Tips 1. Insert 22A WG solid wire in a hole and solder both sides to make a connection from the top side to the bottom. 2. Solder down one strand of 22 AWG stranded wire to make tracks where you need them. Use solid 22 AWG wire for higher current power and ground tracks. 3. Cutting PCBs Thin 1/32 boards can be cut with ordinary scissors. Standard thickness 1/16 FR4 can be cut with good metal shears. Standard thickness 1/16 FR4 can also be scored deeply on both sides with an X-actco knife and snapped. Score it 3 or 4 times on both sides to get a deep cut. Use a good quality knife for safety reasons and to get good results. A metal ruler can help to score accurately. For thru-hole PCBs, scoring along a row of holes makes it much easier to snap the scored PCB. BusBoard Prototype Systems - Built for designers www.BusBoard.com sales@busboard.com BPS-MAR-(SPx SMTpads Family)-001 Rev 4.00