gwgjzhang 发表于 2013-10-18 09:22:46

1685-304复位三极管击穿问题

大侠们，1685-304复位三极管在什么条件下才会击穿损坏。跟PCBA中哪些线路有关系。

chrischan1911qq 发表于 2013-10-18 10:29:03

Can you upload the datasheet?Or post the URL link of the datasheet.Then, I can help to check it out.

gwgjzhang 发表于 2013-10-18 10:33:21

chrischan1911qq 发表于 2013-10-18 10:29
Can you upload the datasheet?Or post the URL link of the datasheet.Then, I can help to check it...

数据表？我要怎么操作才能得到这些数据。请指教。

chrischan1911qq 发表于 2013-10-18 11:14:34

Not 数据表.But datasheet, I mean 規格書

gwgjzhang 发表于 2013-10-18 11:59:22

chrischan1911qq 发表于 2013-10-18 11:14
Not 数据表.But datasheet, I mean 規格書

你意思是三极管的规格书？

chrischan1911qq 发表于 2013-10-18 12:25:30

Yes. Or you can give the detail part number of the 三极管.I can search on internet.

gwgjzhang 发表于 2013-10-18 14:04:51

chrischan1911qq 发表于 2013-10-18 12:25
Yes. Or you can give the detail part number of the 三极管.I can search on internet.

就蓝牙上经常使用到的3904，这个做蓝牙的应该知道吧？我是想问什么情况下才会造成损坏。谢谢。

chrischan1911qq 发表于 2013-10-18 14:23:24

3904 has VCBO=60V, VCEO=40V and VEBO=6V.For a typical design, there cannot be any voltage higher than these limiting values of the transistor.If the problem is really on the transistor itself, I guess the quality of the 3904 you used is not good.Is your 3904 transistor from good brand names (e.g. NXP, On-semi, ...)?

gwgjzhang 发表于 2013-10-18 16:37:46

chrischan1911qq 发表于 2013-10-18 14:23
3904 has VCBO=60V, VCEO=40V and VEBO=6V.For a typical design, there cannot be any voltage higher t ...

嗯。好的，谢谢，那我换一家试试。

whljsh 发表于 2013-10-19 09:52:47

路过，学习中。。。
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