|
本帖最后由 zcyandrew 于 2025-2-13 17:27 编辑
Molex 的16pin连接器页面 https://www.molex.com/en-us/part ... Micro-Fit%2B%20PCIe
在电源端子(Part Number: 2202260004)的sales drawing页面,标注的端子材料为HIGH COPPER ALLOY
根据美国铜开发协会的描述 (https://www.copper.org/publicati ... high_cu_alloys.html):
The high-copper alloy family includes, in wrought forms, cadmium coppers (C16200 and C16500), beryllium coppers (C17000-C17500), chromium coppers (C18100-C18400), zirconium copper (C15000), chromium-zirconium copper (C14500) and combinations of these and other elements. Alloy C18000, another member of the group, contains nickel, silicon and chromium. There are fewer cast high-copper alloys, although the beryllium copper family is well represented.
Terminals and connectors for electrical, electronic and automotive applications. The bulk of these are made from brass, or, for somewhat more demanding applications, phosphor bronze. High copper alloys such as beryllium copper, copper-nickel and others are reserved for more severe duty, especially with regard to stress relaxation resistance.
机翻:
高铜合金系列包括锻造形式的镉铜(C16200 和 C16500)、铍铜(C17000-C17500)、铬铜(C18100-C18400)、锆铜(C15000)、铬锆铜(C14500)以及这些和其他元素的组合。该组的另一个成员合金 C18000 含有镍、硅和铬。铸造高铜合金较少,但铍铜系列代表性较强。
电气、电子和汽车应用的端子和连接器。这些端子和连接器大部分由黄铜制成,或者,对于要求更高的应用,则由磷青铜制成。铍铜、铜镍合金等高铜合金专用于更严苛的应用,尤其是在抗应力松弛方面。
然后这是我在某宝搜16pin插头搜到的买家描述,说了材料是磷铜(应该就是磷青铜)
以国内供应链来说,moddiy的线大概用的也是这种或类似的端子
所以问题很可能就是,16pin设计的时候是按HIGH COPPER ALLOY设计的,但是国内一些厂子在生产端子的时候用了更廉价的材料(磷青铜),短时间内可能不会有可查觉的问题,但是这次
50功耗高插头本身冗余低+
端子多次插拔机械性能下降+
端子本身材料缩水
当然如果最后查出来Molex自己也用的磷青铜那我以上分析纯属放屁
|
|