No.; 15021960-1 Tg and CTE of PCB materials Glass transition temperature ( Tg ) Properties DSC TMA DMA α1z : below Tg α2z : above Tg Unit C C C ppm / C ppm / C R-1766(GH) 140 140 150 65 270 R-1533 145 145 170 35 200 R-1566(W) 148 145 170 40 180 R-1755C 135 135 155 50 260 R-1755E 133 133 153 42 250 R-1755M 153 150 175 40 240 R-1755D 163 154 185 43 236 R-1755V 173 165 190 44 255 R-2125 170 160 190 33 210 R-1577 170 165 190 34 200 R-5725 176 170 210 35 265 R-5725S 200 190 215 32 250 R-5775 185 - 210 45 260 R-5775(N) 185 - 210 45 260 *The data above show actual values and are not guaranteed. 1 Coefficient of thermal expansion ( CTE ) © Panasonic Corporation Electronic Materials Business Division