PGA181

MOSIS Ceramic Packaging Connections and Information

MOSIS offers as a standard part a 181 pin grid array package. The Kyocera KD-P84143-C or equivalent package has a 0.472" cavity (topside) and is 1.675" square. The pins of this package are arranged on a 15 x 15 pin grid at 0.1" centers. There are four full rows of pins around the outside. The following diagram depicts the bonding pad to pin connectivity as viewed from the top of the package (or the top of the socket into which the package is plugged), with the index at the upper right corner. (This view corresponds to the MOSIS layout that has pin #1 in the upper right hand corner and proceeds counterclockwise around the die.) The columns of the grid are labeled alphabetically and the rows numerically.


			     R   P   N   M   L   K   J   H   G   F   E   D   C   B   A
			   +------------------------------------------------------------+
			   |                                                            |
			 1 |45  44  43  42  41  40  39   7   6   5   4   3   2   1  180 | 1 
			   |                                                            |
			 2 |49  38  37  36  35  34  33  13  12  11  10   9   8  172 179 | 2
			   |                                                            |
			 3 |50  55  32  31  30  29  28  18  17  16  15  14  165 171 178 | 3
			   |                                                            |
			 4 |51  56  60  27  26  25  24  22  21  20  19  159 164 170 177 | 4
			   |                                                            |
			 5 |52  57  61  46              23              157 163 169 176 | 5
			   |                                                            |
			 6 |53  58  62  47                              156 162 168 175 | 6
			   |                                                            |
			 7 |54  59  63  48                              155 161 167 174 | 7
			   |                                                            |
			 8 |83  76  70  64  68                      158 154 160 166 173 | 8
			   |                                                            |
			 9 |84  77  71  65                              138 153 149 144 | 9
			   |                                                            |
			10 |85  78  72  66                              137 152 148 143 | 10
			   |                                                            |
			11 |86  79  73  67              113             136 151 147 142 | 11
			   |                                                            |
			12 |87  80  74  69  109 110 111 112 114 115 116 117 150 146 141 | 12
			   |                                                            |
			13 |88  81  75  104 105 106 107 108 118 119 120 121 122 145 140 | 13
			   |                                                            |
			14 |89  82  98  99  100 101 102 103 123 124 125 126 127 128 139 | 14
			   |                                                            |
			15 |90  91  92  93  94  95   96  97 129 130 131 132 133 134 135 | 15
			   +------------------------------------------------------------+
			     R   P   N   M   L   K   J   H   G   F   E   D   C   B   A

			                     Pad to Pin Layout -- TOP View
			


CAUTION: the pad-to-pin layout varies for different 181 pin products, even those from a single vendor. For our purposes, equivalent parts have the same pin grid, the same pad to pin layout, and the same pad to cavity (substrate) connection. Be sure to use this diagram for MOSIS-supplied parts unless or until instructed otherwise.

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