\u30a6\u30a7\u30fc\u30d6\u306f\u3093\u3060\u4ed8\u3051\u306f\u3001\u7279\u306b\u30d7\u30ea\u30f3\u30c8\u56de\u8def\u57fa\u677f\uff08PCB\uff09\u306b\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u90e8\u54c1\u3092\u53d6\u308a\u4ed8\u3051\u308b\u305f\u3081\u306b\u3001\u73fe\u4ee3\u306e\u96fb\u5b50\u6a5f\u5668\u88fd\u9020\u306b\u4e0d\u53ef\u6b20\u306a\u30d0\u30eb\u30af\u306f\u3093\u3060\u4ed8\u3051\u30d7\u30ed\u30bb\u30b9\u3067\u3059\u3002\u3053\u306e\u975e\u5e38\u306b\u52b9\u7387\u7684\u306a\u65b9\u6cd5\u3067\u306f\u3001\u90e8\u54c1\u3092\u642d\u8f09\u3057\u305f\u30d7\u30ea\u30f3\u30c8\u57fa\u677f\u304c\u30b3\u30f3\u30d9\u30a2\u30b7\u30b9\u30c6\u30e0\u306b\u6cbf\u3063\u3066\u79fb\u52d5\u3057\u3001\u6eb6\u878d\u306f\u3093\u3060\u306e\u30d1\u30f3\u306e\u4e0a\u3092\u901a\u904e\u3057\u307e\u3059\u3002\u30d1\u30f3\u5185\u3067\u306f\u3001\u30dd\u30f3\u30d7\u306b\u3088\u3063\u3066\u9023\u7d9a\u7684\u306a\u306f\u3093\u3060\u306e\u6ce2\u304c\u767a\u751f\u3057\u3001\u57fa\u677f\u306e\u4e0b\u9762\u3092\u6d17\u3046\u3068\u540c\u6642\u306b\u3001\u3059\u3079\u3066\u306e\u90e8\u54c1\u306e\u30ea\u30fc\u30c9\u306b\u5f37\u529b\u306a\u91d1\u5c5e\u7d50\u5408\u304c\u5f62\u6210\u3055\u308c\u308b\u3002\u3053\u306e\u6280\u8853\u306f\u5927\u91cf\u751f\u7523\u306e\u57fa\u790e\u3068\u306a\u308b\u3082\u306e\u3067\u3059\u304c\u3001\u305d\u306e\u6210\u529f\u306f\u57fa\u672c\u7684\u306b\u591a\u304f\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u6b63\u78ba\u306b\u5236\u5fa1\u3059\u308b\u3053\u3068\u306b\u4f9d\u5b58\u3057\u3066\u304a\u308a\u3001\u4e2d\u3067\u3082\u6e29\u5ea6\u306f\u6700\u3082\u91cd\u8981\u306a\u5909\u6570\u3067\u3059\u3002\u5305\u62ec\u7684\u306a\u6982\u8981\u306b\u3064\u3044\u3066\u306f\u3001\u8a73\u7d30\u306a\u5185\u8a33\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 \u30a6\u30a7\u30fc\u30d6\u306f\u3093\u3060\u4ed8\u3051\u30d7\u30ed\u30bb\u30b9\u306e\u30b9\u30c6\u30c3\u30d7\u30d0\u30a4\u30b9\u30c6\u30c3\u30d7\u30ac\u30a4\u30c9<\/a>.<\/p>\n \u30a6\u30a7\u30fc\u30d6\u306f\u3093\u3060\u4ed8\u3051\u306e\u5168\u904e\u7a0b\u306f\u30013\u3064\u306e\u91cd\u8981\u306a\u71b1\u7684\u6bb5\u968e\u306b\u533a\u5206\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u305d\u308c\u305e\u308c\u304c\u306f\u3093\u3060\u63a5\u5408\u90e8\u306e\u6700\u7d42\u7684\u306a\u54c1\u8cea\u306b\u660e\u78ba\u304b\u3064\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n Ultimately, \u6e29\u5ea6\u8abf\u7bc0<\/a> is the absolute cornerstone of successful wave soldering. Every phase of the thermal profile\u2014from the gradual ramp-up in the preheating zone to the peak temperature of the solder wave and the controlled cooling rate afterward\u2014must be meticulously engineered and managed. Without this precision, manufacturers risk producing unreliable electronic assemblies plagued by defects like bridging and icicling, compromising both product quality and long-term reliability. To understand how this method compares to others, see our article on \u30a6\u30a7\u30fc\u30d6\u306f\u3093\u3060\u4ed8\u3051\u3068\u30ea\u30d5\u30ed\u30fc\u306f\u3093\u3060\u4ed8\u3051\u306e\u6bd4\u8f03<\/a>.<\/p>\n \u306b\u3088\u308a\u3001\u5b8c\u74a7\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u306f\u3093\u3060\u63a5\u5408\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002 \u30a6\u30a7\u30fc\u30d6\u306f\u3093\u3060\u4ed8\u3051\u30d7\u30ed\u30bb\u30b9<\/a> \u306f\u5358\u4e00\u306e\u6e29\u5ea6\u3067\u306f\u306a\u304f\u3001\u6ce8\u610f\u6df1\u304f\u5236\u5fa1\u3055\u308c\u305f\u71b1\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001PCB\u30a2\u30bb\u30f3\u30d6\u30ea\u306e\u71b1\u7684\u306a\u65c5\u3092\u6307\u793a\u3059\u308b\u6642\u9593-\u6e29\u5ea6\u30b0\u30e9\u30d5\u3067\u3059\u3002\u4e88\u71b1\u3001\u306f\u3093\u3060\u30a6\u30a7\u30fc\u30d6\u30b3\u30f3\u30bf\u30af\u30c8\u3001\u51b7\u5374\u306e3\u3064\u306e\u91cd\u8981\u306a\u6bb5\u968e\u304b\u3089\u69cb\u6210\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u6b63\u78ba\u306b\u5b9f\u884c\u3059\u308b\u3053\u3068\u306f\u3001\u30d5\u30e9\u30c3\u30af\u30b9\u3092\u6d3b\u6027\u5316\u3057\u3001\u71b1\u5fdc\u529b\u3092\u9632\u6b62\u3057\u3001\u5f37\u56fa\u306a\u91d1\u5c5e\u9593\u63a5\u5408\u3092\u5f62\u6210\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n \u4e88\u71b1\u6bb5\u968e\u306f\u3001\u30b5\u30fc\u30de\u30eb\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u521d\u671f\u6bb5\u968e\u3067\u3042\u308a\u3001\u6700\u3082\u9577\u3044\u6bb5\u968e\u3067\u3059\u3002\u305d\u306e\u4e3b\u306a\u76ee\u7684\u306f\u3001PCB\u30a2\u30bb\u30f3\u30d6\u30ea\u5168\u4f53\u306e\u6e29\u5ea6\u3092\u5f90\u3005\u306b\u5747\u4e00\u306b\u4e0a\u6607\u3055\u305b\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u5236\u5fa1\u3055\u308c\u305f\u6e29\u5ea6\u4e0a\u6607\u306f\u3001\u90e8\u54c1\u306b\u5fae\u7d30\u306a\u4e80\u88c2\u3092\u751f\u3058\u3055\u305b\u305f\u308a\u3001\u57fa\u677f\u306e\u53cd\u308a\u306b\u3064\u306a\u304c\u308b\u73fe\u8c61\u3067\u3042\u308b\u71b1\u885d\u6483\u3092\u9632\u3050\u305f\u3081\u306b\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002\u3053\u306e\u6bb5\u968e\u306f\u307e\u305f\u3001\u6db2\u4f53\u30d5\u30e9\u30c3\u30af\u30b9\u3092\u6d3b\u6027\u5316\u3055\u305b\u3001\u305d\u306e\u5316\u5b66\u85ac\u54c1\u304c\u306f\u3093\u3060\u4ed8\u3051\u3055\u308c\u308b\u91d1\u5c5e\u8868\u9762\u306e\u9178\u5316\u7269\u3092\u52b9\u679c\u7684\u306b\u9664\u53bb\u3059\u308b\u3068\u3044\u3046\u91cd\u8981\u306a\u6a5f\u80fd\u3082\u679c\u305f\u3057\u307e\u3059\u3002\u6e29\u5ea6\u306e\u4e0a\u6607\u901f\u5ea6\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u304c\u6700\u3082\u91cd\u8981\u3067\u3042\u308a\u3001\u4e00\u822c\u306b\u3001\u4e0a\u6607\u901f\u5ea6\u306f\u6bce\u79d22\uff5e4\u2103\u672a\u6e80\u306b\u7dad\u6301\u3055\u308c\u308b\u3079\u304d\u3067\u3042\u308b\u3002\u57fa\u677f\u304c\u306f\u3093\u3060\u30a6\u30a7\u30fc\u30d6\u3068\u63a5\u89e6\u3059\u308b\u524d\u306b\u3001\u57fa\u677f\u4e0a\u9762\u306e\u6e29\u5ea6\u306f100\u2103\uff5e130\u2103\u304c\u7406\u60f3\u7684\u3067\u3059\u3002 [\u51fa\u5178\uff1a\u30a8\u30da\u30c3\u30af\u30fb\u30a8\u30f3\u30b8\u30cb\u30a2\u30fc\u30c9\u30fb\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u30ba\uff3d<\/a>.\u4e88\u71b1\u304c\u4e0d\u5341\u5206\u306a\u5834\u5408\u3001\u30d5\u30e9\u30c3\u30af\u30b9\u306e\u6d3b\u6027\u5316\u304c\u4e0d\u5b8c\u5168\u306b\u306a\u308a\u3001\u6df1\u523b\u306a\u71b1\u5fdc\u529b\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u4e88\u71b1\u304c\u904e\u5270\u306a\u5834\u5408\u3001\u30d5\u30e9\u30c3\u30af\u30b9\u304c\u65e9\u671f\u306b\u6d88\u8cbb\u3055\u308c\u305f\u308a\u3001\u654f\u611f\u306a\u90e8\u54c1\u304c\u52a3\u5316\u3057\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n \u3053\u308c\u306f\u3001\u5b9f\u969b\u306e\u306f\u3093\u3060\u4ed8\u3051\u304c\u884c\u308f\u308c\u308b\u4e2d\u5fc3\u7684\u306a\u6bb5\u968e\u3067\u3059\u3002\u30d7\u30ea\u30f3\u30c8\u57fa\u677f\u304c\u306f\u3093\u3060\u69fd\u306e\u4e0a\u3092\u901a\u904e\u3059\u308b\u3068\u3001\u6eb6\u878d\u306f\u3093\u3060\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u306a\u6ce2\u304c\u57fa\u677f\u306e\u4e0b\u9762\u306b\u63a5\u89e6\u3057\u3001\u3081\u3063\u304d\u3055\u308c\u305f\u30b9\u30eb\u30fc\u30db\u30fc\u30eb\u3084\u90e8\u54c1\u306e\u30ea\u30fc\u30c9\u7dda\u5468\u8fba\u306b\u6d41\u308c\u8fbc\u307f\u307e\u3059\u3002\u3053\u306e\u63a5\u89e6\u6642\u9593\u306f\u30c9\u30a6\u30a7\u30eb\u30bf\u30a4\u30e0\u3068\u547c\u3070\u308c\u3001\u901a\u5e38\u6570\u79d2\u3068\u975e\u5e38\u306b\u77ed\u3044\u3082\u306e\u3067\u3059\u3002\u306f\u3093\u3060\u306e\u6e29\u5ea6\u306f\u3053\u306e\u6bb5\u968e\u3067\u6700\u3082\u91cd\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3042\u308a\u3001\u4f7f\u7528\u3055\u308c\u308b\u306f\u3093\u3060\u5408\u91d1\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n \u5b89\u5b9a\u3057\u305f\u9ad8\u54c1\u8cea\u306e\u306f\u3093\u3060\u30d5\u30a3\u30ec\u30c3\u30c8\u3092\u5f62\u6210\u3059\u308b\u306b\u306f\u3001\u30a6\u30a7\u30fc\u30d6\u5168\u4f53\u306e\u6e29\u5ea6\u3092\u5b89\u5b9a\u304b\u3064\u5747\u4e00\u306b\u4fdd\u3064\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6700\u65b0\u306e\u925b\u30d5\u30ea\u30fc\u5408\u91d1\u306e\u8907\u96d1\u3055\u3092\u514b\u670d\u3059\u308b\u88fd\u9020\u696d\u8005\u306e\u305f\u3081\u306b\u3001 \u925b\u30d5\u30ea\u30fc\u30a6\u30a7\u30fc\u30d6\u306f\u3093\u3060\u4ed8\u3051\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u30de\u30b9\u30bf\u30fc<\/a> \u304c\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u3092\u6210\u529f\u3055\u305b\u308b\u305f\u3081\u306e\u7d76\u5bfe\u7684\u306a\u9375\u3067\u3042\u308b\u3002<\/p>\n Immediately after exiting the solder wave, the PCB enters the final cooling stage. This is not a passive process; the rate of cooling must be carefully managed to ensure the formation of a strong, fine-grained solder joint structure. If the assembly cools down too rapidly (shock cooling), it can induce internal stresses, leading to brittle joints or micro-fractures that may fail later. Conversely, if the cooling process is too slow, it can result in the formation of a coarse grain structure, which weakens the joint\u2019s mechanical strength. The ideal cooling rate is typically less than 5\u00b0C per second [\u51fa\u5178\uff1aOurPCB\uff3d<\/a>.\u3053\u306e\u5236\u5fa1\u3055\u308c\u305f\u6e29\u5ea6\u964d\u4e0b\u306b\u3088\u308a\u3001\u306f\u3093\u3060\u306f\u5f37\u56fa\u306a\u91d1\u5c5e\u7d50\u5408\u306b\u51dd\u56fa\u3057\u3001\u90e8\u54c1\u304c\u6052\u4e45\u7684\u306b\u56fa\u5b9a\u3055\u308c\u308b\u3002<\/p>\n \u5b8c\u74a7\u306a\u306f\u3093\u3060\u63a5\u5408\u3092\u9054\u6210\u3059\u308b\u306b\u306f\u3001\u753b\u4e00\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u306f\u4e0d\u53ef\u80fd\u3067\u3059\u3002\u7406\u60f3\u7684\u306a\u6e29\u5ea6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u7279\u5b9a\u306e\u30d7\u30ea\u30f3\u30c8\u56de\u8def\u57fa\u677f\u30a2\u30bb\u30f3\u30d6\u30ea\u3054\u3068\u306b\u56fa\u6709\u306e\u7269\u7406\u7684\u304a\u3088\u3073\u6750\u6599\u7684\u7279\u6027\u306b\u5408\u308f\u305b\u3066\u614e\u91cd\u306b\u8abf\u6574\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30a6\u30a7\u30fc\u30d6\u304b\u3089\u30ea\u30d5\u30ed\u30fc\u307e\u3067\u3001\u3042\u3089\u3086\u308b\u306f\u3093\u3060\u4ed8\u3051\u30d7\u30ed\u30bb\u30b9\u3092\u6700\u9069\u5316\u3059\u308b\u306b\u306f\u3001\u57fa\u677f\u306e\u539a\u3055\u3001\u90e8\u54c1\u5bc6\u5ea6\u3001\u6750\u6599\u30bf\u30a4\u30d7\u306a\u3069\u306e\u5909\u6570\u304c\u71b1\u5438\u53ce\u3068\u71b1\u5206\u5e03\u306b\u3069\u306e\u3088\u3046\u306b\u5f71\u97ff\u3059\u308b\u304b\u3092\u6df1\u304f\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30aa\u30fc\u30d6\u30f3\u30d9\u30fc\u30b9\u306e\u65b9\u6cd5\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u3053\u308c\u3089\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u8a73\u7d30\u306a\u30ac\u30a4\u30c9\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u3054\u89a7\u3044\u305f\u3060\u3051\u307e\u3059\u3002 \u30ea\u30d5\u30ed\u30fc\u7089\u6e29\u5ea6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u8a2d\u5b9a<\/a>.<\/p>\n The thickness and layer count of a PCB are primary determinants of its thermal mass\u2014the amount of heat energy required to raise its temperature. A thick, multi-layered board has a significantly higher thermal mass than a thin, single-sided one. During preheating, it will require more energy and time to reach the target temperature uniformly. If the preheat stage is too short or the temperature is too low, the board\u2019s inner core may remain cool, leading to cold solder joints when it hits the solder wave. Conversely, applying a profile designed for a high-mass board to a low-mass one will result in overheating, potentially damaging components or causing the board to delaminate [\u51fa\u5178\uff1a\u30a8\u30da\u30c3\u30af\u30fb\u30a8\u30f3\u30b8\u30cb\u30a2\u30fc\u30c9\u30fb\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u30ba\uff3d<\/a>.\u30a2\u30bb\u30f3\u30d6\u30ea\u5168\u4f53\u304c\u71b1\u5e73\u8861\u306b\u9054\u3059\u308b\u3088\u3046\u306b\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u4e88\u71b1\u30be\u30fc\u30f3\u306e\u6642\u9593\u3092\u5ef6\u3070\u3057\u305f\u308a\u3001\u6e29\u5ea6\u3092\u4e0a\u3052\u305f\u308a\u3057\u3066\u3001\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u8abf\u6574\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n The size, quantity, and placement of components also contribute significantly to the overall thermal mass and its distribution across the board. An assembly densely populated with large components like Ball Grid Arrays (BGAs), Quad Flat Packages (QFPs), and heat sinks absorbs and distributes heat very differently than a board with a sparse layout of small, discrete components. Large components can act as heat sinks, drawing thermal energy away from the solder joints and creating \u201cthermal shadows\u201d that prevent smaller nearby components from reaching the required temperature. An effective PCB\u30ea\u30d5\u30ed\u30fc\u6e29\u5ea6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<\/a> often incorporates a \u201csoak\u201d zone, a period of sustained temperature, to allow the entire board to equalize, ensuring all components are uniformly heated before the final temperature spike [\u51fa\u5178\uff1a\u30a2\u30f3\u30c0\u30fb\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u30ba\uff3d<\/a>.\u3053\u306e\u539f\u7406\u306f\u3001\u30a6\u30a7\u30fc\u30d6\u306f\u3093\u3060\u4ed8\u3051\u306e\u4e88\u71b1\u6bb5\u968e\u306b\u3082\u9069\u7528\u3055\u308c\u308b\u3002<\/p>\n FR-4\u306f\u6700\u3082\u4e00\u822c\u7684\u306a\u57fa\u677f\u6750\u6599\u3067\u3042\u308b\u304c\u3001\u7279\u6b8a\u306a\u7528\u9014\u3067\u306f\u72ec\u81ea\u306e\u71b1\u7279\u6027\u3092\u6301\u3064\u6750\u6599\u304c\u8981\u6c42\u3055\u308c\u308b\u3002\u9ad8\u5468\u6ce2\u56de\u8def\u306f\u30ed\u30b8\u30e3\u30fc\u30b9\u6750\u3092\u4f7f\u7528\u3057\u3001\u30cf\u30a4\u30d1\u30ef\u30fc\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u30e1\u30bf\u30eb\u30b3\u30a2PCB\uff08MCPCB\uff09\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3002\u3053\u308c\u3089\u306e\u6750\u6599\u306f\u71b1\u4f1d\u5c0e\u7387\u304c\u7570\u306a\u308a\u3001\u71b1\u306e\u4f1d\u308f\u308a\u65b9\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001MCPCB\u306f\u975e\u5e38\u306b\u52b9\u7387\u7684\u306b\u71b1\u3092\u653e\u6563\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u63a5\u5408\u90e8\u3067\u5fc5\u8981\u306a\u306f\u3093\u3060\u4ed8\u3051\u6e29\u5ea6\u3092\u7dad\u6301\u3059\u308b\u306e\u304c\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002\u6e29\u5ea6\u306b\u654f\u611f\u306a\u90e8\u54c1\u3092\u904e\u71b1\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u3053\u306e\u6025\u901f\u306a\u653e\u71b1\u3092\u88dc\u3046\u305f\u3081\u306b\u306f\u3001\u6e29\u5ea6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u3088\u308a\u7a4d\u6975\u7684\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u306f\u3093\u3060\u5408\u91d1\u81ea\u4f53\u3082\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u5f93\u6765\u306e\u932b\u925b\uff08SnPb\uff09\u306f\u3093\u3060\u306e\u878d\u70b9\u306f\u7d04183\u2103\u3067\u3059\u3002\u5bfe\u7167\u7684\u306b\u3001SAC305\u306e\u3088\u3046\u306a\u6700\u65b0\u306e\u925b\u30d5\u30ea\u30fc\u5408\u91d1\u306f\u878d\u70b9\u304c\u9ad8\u304f\u3001\u901a\u5e38217\u2103\uff5e221\u2103\u3067\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u30ea\u30d5\u30ed\u30fc\u306f\u3093\u3060\u4ed8\u3051\u306e\u30d4\u30fc\u30af\u6e29\u5ea6\u306f235\u2103\u304b\u3089250\u2103\u306b\u9054\u3057\u3001\u6709\u925b\u306f\u3093\u3060\u306b\u5fc5\u8981\u306a\u6e29\u5ea6\u3088\u308a\u308220\uff5e30\u2103\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002 [\u51fa\u5178\uff1aPCB\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u30ba\uff3d<\/a>.\u9593\u9055\u3063\u305f\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u306f\u3093\u3060\u306e\u6eb6\u878d\u304c\u4e0d\u5b8c\u5168\u306b\u306a\u3063\u305f\u308a\u3001\u6df1\u523b\u306a\u71b1\u640d\u50b7\u3092\u53d7\u3051\u305f\u308a\u3068\u3001\u5927\u60e8\u4e8b\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u8a73\u3057\u304f\u306f \u30ea\u30d5\u30ed\u30fc\u306f\u3093\u3060\u4ed8\u3051\u30d7\u30ed\u30bb\u30b9\u3078\u306e\u30c7\u30a3\u30fc\u30d7\u30c0\u30a4\u30d6<\/a>.<\/p>\n 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\u30b3\u30fc\u30eb\u30c9\u30b8\u30e7\u30a4\u30f3\u30c8\u306f\u3001\u306f\u3093\u3060\u304c\u5b8c\u5168\u306b\u6eb6\u3051\u3066\u9069\u5207\u306b\u6d41\u308c\u305a\u3001\u90e8\u54c1\u306e\u30ea\u30fc\u30c9\u3068PCB\u30d1\u30c3\u30c9\u306e\u9593\u306e\u63a5\u7d9a\u304c\u4e0d\u5341\u5206\u3067\u4fe1\u983c\u3067\u304d\u306a\u3044\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u63a5\u5408\u90e8\u306f\u3001\u304f\u3059\u3093\u3060\u7070\u8272\u3001\u3056\u3089\u3056\u3089\u3057\u305f\u3001\u307e\u305f\u306f\u584a\u72b6\u306e\u5916\u89b3\u306b\u3088\u3063\u3066\u8996\u899a\u7684\u306b\u8b58\u5225\u53ef\u80fd\u3067\u3042\u308a\u3001\u826f\u597d\u306a\u306f\u3093\u3060\u63a5\u5408\u90e8\u306e\u660e\u308b\u304f\u5149\u6ca2\u306e\u3042\u308b\u4ed5\u4e0a\u3052\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u96fb\u6c17\u7684\u306b\u306f\u5927\u304d\u306a\u969c\u5bb3\u3068\u306a\u308a\u3001\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u56f0\u96e3\u306a\u65ad\u7d9a\u7684\u306a\u6545\u969c\u3092\u5f15\u304d\u8d77\u3053\u3059\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002<\/p>\n Solder bridging is a defect where an excess amount of solder forms an unintended electrical connection between two or more adjacent pads or component leads. These \u201cshorts\u201d can cause immediate circuit malfunctions and are particularly challenging to detect when they occur under dense components like Ball Grid Arrays (BGAs).<\/p>\n \u30b5\u30fc\u30de\u30eb\u30b7\u30e7\u30c3\u30af\u3068\u306f\u3001\u6025\u6fc0\u306a\u6e29\u5ea6\u5909\u5316\u306b\u3088\u308aPCB\u3084\u305d\u306e\u90e8\u54c1\u306b\u767a\u751f\u3059\u308b\u640d\u50b7\u3084\u7834\u58ca\u306e\u3053\u3068\u3067\u3059\u3002FR-4\u57fa\u677f\u3001\u9285\u30c8\u30ec\u30fc\u30b9\u3001\u30bb\u30e9\u30df\u30c3\u30af\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30dc\u30c7\u30a3\u306a\u3069\u3001PCB\u30a2\u30bb\u30f3\u30d6\u30ea\u3067\u4f7f\u7528\u3055\u308c\u308b\u3055\u307e\u3056\u307e\u306a\u6750\u6599\u306f\u3001\u3059\u3079\u3066\u7570\u306a\u308b\u901f\u5ea6\uff08\u71b1\u81a8\u5f35\u4fc2\u6570\uff09\u3067\u81a8\u5f35\u304a\u3088\u3073\u53ce\u7e2e\u3057\u307e\u3059\u3002\u6025\u6fc0\u306a\u6e29\u5ea6\u4e0a\u6607\u306f\u3001\u81f4\u547d\u7684\u306a\u30af\u30e9\u30c3\u30af\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u83ab\u5927\u306a\u6a5f\u68b0\u7684\u30b9\u30c8\u30ec\u30b9\u3092\u767a\u751f\u3055\u305b\u307e\u3059\u3002<\/p>\n The Critical Role of Temperature in Wave Soldering Wave soldering is a bulk soldering process integral to modern electronics manufacturing, […]<\/p>","protected":false},"author":1,"featured_media":3220,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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