// // file: QFN_32 // // date: 4-Feb-2012 Originally written for the CB_FAN card // // 15-Aug-2012 Copied from CB_FAN to CMX and make comsetic changes // // 22-Dec-2015 Bring over to the Hub design for the 320 MHz Clock Fanout // // 24-Jul-2016 Move to the new one file format for QFN files. // // 13-Sep-2016 Move the backside metal for the center thermal/gnd // pad from Breakout_2 to Sheet_Dielectric_1. // Handling of the backside metal is described in // the Hub trace routing details file. // // 10-Dec-2016 To the Pin/Pad Stack for the Center Thermal Pad Via // geometry add a 0.28 mm diameter flash on PREPREG_5 // to indicate the location of a Via that needs to be // Plugged from the Top. This works because in the Hub // design the QFN-32 package is only instanced on the // top side of the card. // // // Hub Module QFN-32 for the On-Semi MC100LVEP111 Clock Fanout // // // This Geometry started out on the CB_Fan board. Then it was // slightly modified and used on the CMX board. // // Now this geometry will be used on the Hub Module // for the MC100LVEP111 LVECL Fanout chip. // // Detailed dimensions will be changed to match the // On-Semi MC100LVEP111 data sheet recommendations. // // See also: National AN-1187 TI SNOA401p LLP Layout // // // Basic Design to fit the MC100LVEP111 recommendations: // // // // From On-Semi: // ------------- // // Pad pitch is 0.5mm // // Device pin lands are 0.18mm to 0.30mm wide by // 0.30mm to 0.50mm long // // PCB Pad Land recommendataion 0.30mm x 0.63mm // --> Edge to edge pad center to pad center is 4.67mm // // Center pad, i.e. Thermal pad // 2.95mm to 3.25mm square on the device package // recommendation for the PCB 3.20mm to 3.35mm square // // No On-Semi recommendataion given for thermal vias or solder stencil. // // // // Thermal Pad Design in this Geometry: // ------------------------------------ // // The Thermal Pad will be 3.1mm x 3.1mm centered on 0,0 // // There are 9 Thermal Vias spaced 1.00mm in X and Y from 0,0 // // The Thermal Vias are component pins: 33:41 // // The Solder Mask will be 3.20mm x 3.20mm centered on 0,0 // i.e. the Solder Mask is 0.05mm bigger at every edge // // All of the Copper Breakout, Solder Mask, and Solder Stencil // (aka Paste Mask) information for the Thermal Pad is just // carried in the body of the geometry, i.e. it is not // associated with a given pin. // // The solder stencil will be: // in 4 sections // 0.3mm between sections // relieved back 0.10mm from the edges of the 3.1mm x3.1mm pad // // This Thermal Pad Solder Stencil design gives 70% coverage // on the Thermal Pad // // // // Signal Pad Design in this Geometry: // ----------------------------------- // // The pcb signal pads are 0.28mm x 0.86mm // With an edge to edge pad center to pad center spacing of 4.95mm // --> wrt On-Semi package 0.055mm heal // --> wrt On-Semi package 0.405mm toe // // The Solder Mask opening is 0.38mm x 0.98mm centered on the pad // i.e. 0.05mm greater on all edges // // The Solder Stencil opening is 0.24mm x 0.80mm centered on the pad // --> 80% of the area of the pcb pad land // // // The QFN-32 Geometry has Pin #1 in the top lefthand corner. // // // //---------------------------------------------------------------------------- // $abort_enable = @false; $$lock_windows(@on) ; $$snap_diagonal(@off) ; $$snap_orthogonal(@off) ; // //---------------------------------------------------------------------------- // // Pads with a long Vertical axis. $$lock_windows(@on); $$create_pin("QFN_32_Vert_Pad", @replace); $$page(0.0,0.0,0.0, @mm, 0.0, 0.0, [0.0, 0.0, 'PI$QFN_32_Vert_Pad']); $$point_mode(@vertex); $$polygon( "PAD_1", , [ 0.14, 0.43, -0.14, 0.43, -0.14, -0.43, 0.14, -0.43 ] ); $$polygon( "SOLDER_MASK_1", , [ 0.19, 0.48, -0.19, 0.48, -0.19, -0.48, 0.19, -0.48 ] ); $$polygon( "PASTE_MASK_1", , [ 0.12, 0.40, -0.12, 0.40, -0.12, -0.40, 0.12, -0.40 ] ); $$attribute( "TERMINAL_SURFACE_DEFINITION", ""); //---------------------------------------------------------------------------- // Pads with a long Horizontal axis. $$lock_windows(@on); $$create_pin("QFN_32_Horz_Pad", @replace); $$page(0.0,0.0,0.0, @mm, 0.0, 0.0, [0.0, 0.0, 'PI$QFN_32_Horz_Pad']); $$point_mode(@vertex); $$polygon( "PAD_1", , [ 0.43, 0.14, -0.43, 0.14, -0.43, -0.14, 0.43, -0.14 ] ); $$polygon( "SOLDER_MASK_1", , [ 0.48, 0.19, -0.48, 0.19, -0.48, -0.19, 0.48, -0.19 ] ); $$polygon( "PASTE_MASK_1", , [ 0.40, 0.12, -0.40, 0.12, -0.40, -0.12, 0.40, -0.12 ] ); $$attribute( "TERMINAL_SURFACE_DEFINITION", ""); //---------------------------------------------------------------------------- //---------------------------------------------------------------------------- // Through Hole Pin/Pad Stack for the 4 "Thermal Vias" // These are component pins 33 through 36. // // 0.30 mm finished hole diameter // 0.60 mm land pad // 0.85 mm plane relief // 0.28 mm PrePreg_5 flash to indicate a // via that is plugged from the top // // --> 0.275 mm clearance from edge of drill hole to Planes // // --> for 1.00 mm spacing there is a 0.15 mm wide neck // in the Ground web between drills // $$lock_windows(@on); $$create_pin( "qfn_32_thd_pin" ); $$page(0.0, 0.0, 0.0, @mm, 0.0, 0.0, [ 0.0, 0.0, 'PI$qfn_32_thd_pin' ] ); $$point_mode(@vertex); $$attribute( "TERMINAL_THRUHOLE_DEFINITION", ""); $$attribute( "TERMINAL_DRILL_SIZE", "", , @scale , , [ 0.30, 0.0 ]); $$circle( "SIGNAL", 0.0, 0.0, 0.60, 0.0 ); $$circle( "POWER", 0.0, 0.0, 0.85, 0.0 ); $$circle( "PREPREG_5", 0.0, 0.0, 0.28, 0.0 ); //---------------------------------------------------------------------------- //---------------------------------------------------------------------------- $$lock_windows(@on) ; $$create_component("QFN_32", @replace); $$page( 0.0, 0.0, 0.0, @mm, 0.0, 0.0, [ 0.0, 0.0, 'CO$QFN_32' ]); $$point_mode(@vertex); $$attribute( "COMPONENT_LAYOUT_SURFACE", "both"); $$attribute( "COMPONENT_HEIGHT", "1.20", , @scale , , [0.0, 0.0] ); // // Component Placement Outline for the QFN-32 // $$initial([ -3.10, -3.10 ], , @nosnap ); $$terminal([ -3.10, 3.10 ] ); $$terminal([ 3.10, 3.10 ] ); $$terminal([ 3.10, -3.10 ] ); $$attribute( "COMPONENT_PLACEMENT_OUTLINE", "", @mark, @scale ); // Silkscreen: Horz Bot, Vert Right, Horz Top, Diag, Vert Left $$path( "SILKSCREEN", 0.20 , , [ -3.10, -3.10, 3.10, -3.10 ] ); $$path( "SILKSCREEN", 0.20 , , [ -3.10, 3.10, 3.10, 3.10 ] ); $$path( "SILKSCREEN", 0.20 , , [ -3.10, -3.10, -3.10, 3.10 ] ); $$path( "SILKSCREEN", 0.20 , , [ 3.10, -3.10, 3.10, 3.10 ] ); // Pin #1 Indicator: $$circle( "SILKSCREEN_1", -3.6, 3.6, 0.5, 0.20 ); $$circle( "SILKSCREEN_1", -3.6, 3.6, 1.0, 0.20 ); // // End of Silkscreen // // Reference Designator $$text( "SILKSCREEN", "^$ref", 0.0, 4.8, 2.0, @CC, 0, 0.7, 0.20, "std", "None", 0.0, 0.0 ); // Setup the Local Fiducial Marks //$$circle( "PAD_1", 0.00, 4.50, 1.0, 0.0); //$$circle( "SOLDER_MASK_1", 0.00, 4.50, 1.3, 0.0); //$$circle( "PAD_1", 0.00, -4.50, 1.0, 0.0); //$$circle( "SOLDER_MASK_1", 0.00, -4.50, 1.3, 0.0); // // Now place the center Thermal Pad // // - Copper on Breakout 1 and 2 // // - Solder Mask Relief for this Thermal Pad // // - Paste Mask openings // $$polygon( "BREAKOUT_1", , [ -1.55, -1.55, 1.55, -1.55, 1.55, 1.55, -1.55, 1.55 ] ); $$polygon( "SOLDER_MASK_1", , [ -1.60, -1.60, 1.60, -1.60, 1.60, 1.60, -1.60, 1.60 ] ); $$polygon( "PASTE_MASK_1", , [ 0.15, 0.15, 1.45, 0.15, 1.45, 1.45, 0.15, 1.45 ] ); $$polygon( "PASTE_MASK_1", , [ -0.15, 0.15, -1.45, 0.15, -1.45, 1.45, -0.15, 1.45 ] ); $$polygon( "PASTE_MASK_1", , [ 0.15, -0.15, 1.45, -0.15, 1.45, -1.45, 0.15, -1.45 ] ); $$polygon( "PASTE_MASK_1", , [ -0.15, -0.15, -1.45, -0.15, -1.45, -1.45, -0.15, -1.45 ] ); $$polygon( "SHEET_DIELECTRIC_1", , [ -1.30, -1.30, 1.30, -1.30, 1.30, 1.30, -1.30, 1.30 ] ); // Define the pins // Pads Along the Left-Hand Edge $$attribute( "COMPONENT_PIN_DEFINITION", "1", , @scale , , [ -2.475, 1.75 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "1, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "2", , @scale , , [ -2.475, 1.25 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "2, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "3", , @scale , , [ -2.475, 0.75 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "3, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "4", , @scale , , [ -2.475, 0.25 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "4, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "5", , @scale , , [ -2.475, -0.25 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "5, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "6", , @scale , , [ -2.475, -0.75 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "6, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "7", , @scale , , [ -2.475, -1.25 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "7, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "8", , @scale , , [ -2.475, -1.75 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "8, QFN_32_Horz_Pad"); // Pads Along the Bottom Edge $$attribute( "COMPONENT_PIN_DEFINITION", "9", , @scale , , [ -1.75, -2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "9, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "10", , @scale , , [ -1.25, -2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "10, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "11", , @scale , , [ -0.75, -2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "11, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "12", , @scale , , [ -0.25, -2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "12, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "13", , @scale , , [ 0.25, -2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "13, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "14", , @scale , , [ 0.75, -2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "14, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "15", , @scale , , [ 1.25, -2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "15, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "16", , @scale , , [ 1.75, -2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "16, QFN_32_Vert_Pad"); // Pads Along the Right-Hand Edge $$attribute( "COMPONENT_PIN_DEFINITION", "17", , @scale , , [ 2.475, -1.75 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "17, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "18", , @scale , , [ 2.475, -1.25 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "18, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "19", , @scale , , [ 2.475, -0.75 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "19, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "20", , @scale , , [ 2.475, -0.25 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "20, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "21", , @scale , , [ 2.475, 0.25 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "21, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "22", , @scale , , [ 2.475, 0.75 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "22, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "23", , @scale , , [ 2.475, 1.25 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "23, QFN_32_Horz_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "24", , @scale , , [ 2.475, 1.75 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "24, QFN_32_Horz_Pad"); // Pads Along the Top Edge $$attribute( "COMPONENT_PIN_DEFINITION", "25", , @scale , , [ 1.75, 2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "25, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "26", , @scale , , [ 1.25, 2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "26, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "27", , @scale , , [ 0.75, 2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "27, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "28", , @scale , , [ 0.25, 2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "28, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "29", , @scale , , [ -0.25, 2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "29, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "30", , @scale , , [ -0.75, 2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "30, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "31", , @scale , , [ -1.25, 2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "31, QFN_32_Vert_Pad"); $$attribute( "COMPONENT_PIN_DEFINITION", "32", , @scale , , [ -1.75, 2.475 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "32, QFN_32_Vert_Pad"); // Center Pad Array Thermal Pad Ground Connection $$attribute( "COMPONENT_PIN_DEFINITION", "33", , @scale , , [ -1.00, 1.00 ]); $$attribute( "COMPONENT_PIN_DEFINITION", "34", , @scale , , [ -1.00, 0.00 ]); $$attribute( "COMPONENT_PIN_DEFINITION", "35", , @scale , , [ -1.00, -1.00 ]); $$attribute( "COMPONENT_PIN_DEFINITION", "36", , @scale , , [ 0.00, -1.00 ]); $$attribute( "COMPONENT_PIN_DEFINITION", "37", , @scale , , [ 1.00, -1.00 ]); $$attribute( "COMPONENT_PIN_DEFINITION", "38", , @scale , , [ 1.00, 0.00 ]); $$attribute( "COMPONENT_PIN_DEFINITION", "39", , @scale , , [ 1.00, 1.00 ]); $$attribute( "COMPONENT_PIN_DEFINITION", "40", , @scale , , [ 0.00, 1.00 ]); $$attribute( "COMPONENT_PIN_DEFINITION", "41", , @scale , , [ 0.00, 0.00 ]); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "33, qfn_32_thd_pin" ); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "34, qfn_32_thd_pin" ); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "35, qfn_32_thd_pin" ); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "36, qfn_32_thd_pin" ); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "37, qfn_32_thd_pin" ); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "38, qfn_32_thd_pin" ); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "39, qfn_32_thd_pin" ); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "40, qfn_32_thd_pin" ); $$attribute( "COMPONENT_PADSTACK_OVERRIDE", "41, qfn_32_thd_pin" ); //----------------------------------------------------------------------------