英标H型钢UC152*152*23数据表
英标H型钢对于提高产品质量作用与FR-4型产品是相同的,是很有必要的。特别是对于阻燃型纸基覆铜板,为了降低成本,在树脂中加入了相当比例的添加型阻燃剂如四双酚A,五醚,磷酸三酯,三氧化二锑、水合氧化铝等等成分。由于这些成份大部分不参与树脂固化交联反应,它降低了树脂体系耐热性, 为明显是耐焊性。这就出现了一对矛盾,要提高基板阻燃性,就应增加阻燃剂用量。但阻燃剂用 过大,就会降低基板耐焊性。
英标H型钢尺寸表:
UC152x152x23 152.4x152.2x5.8x6.8
UC152x152x37 161.8x154.4x8x11.5
UC203x203x46 203.2x203.6x7.2x11
UC203x203x86 222.2x209.4x12.7x20.5
UC254x254x73 254.1x254.6x8.6x14.2
UC254x254x89 260.3x256.3x10.3x17.3
UC254x254x167 289.1x265.2x19.2x31.7
UC305x305x97 307.9x305.3x9.9x15.4
UC305x305x118 314.5x307.4x12x18.7
UC305x305x137 320.5x309.2x13.8x21.7
UC305x305x283 365.3x322.2x26.8x44.1
UC356x368x129 355.6x368.6x10.4x17.5
UC356x368x153 362x370.5x12.3x20.7
UC356x368x177 368.2x372.6x14.4x23.8
UC356x368x202 374.6x374.7x16.5x27
UC356x406x235 381x394.8x18.4x30.2
UC356x406x393 419x407x30.6x49.2
UC356x406x592 465x421x45x72.3
UC356x406x744 498x432x55.6x88.9
UC356x406x990 550x448x71.9x115
UC356x406x1299 600x476x100x140