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BFU690F damaged even within the condition

Question asked by Teoh Wei JIe on Dec 14, 2018
Latest reply on Jan 3, 2019 by Teoh Wei JIe

Regarding BFU690F NPN wideband silicon RF transistor , the transistor get damaged and the collector current only = 63mA . Collector voltage = 4.7v and Vce =4.3 v.

Moreover, if  the Vc =6.5v , Vce = 2.498 v and Ic= 32mA the transistor fine .Is Is that the Vce cannot so high ?