DO-214AA (SMB), DO-214AB (SMC), and DO-214AC (SMA).

DO-214 is a standard that specifies a group of semiconductor packages for surface mounted diodes.

The standard includes multiple variants such as

DO-214AA (SMB), DO-214AB (SMC), and DO-214AC (SMA).

DO-214AC (SMA) is the smallest,

DO-214AB (SMC) is the largest.

DO-214AC (SMA) < DO-214AA (SMB) < DO-214AB (SMC)

DO-214AA (SMB), DO-214AB (SMC), and DO-214AC (SMA)._第1张图片

DO-214AA (SMB), DO-214AB (SMC), and DO-214AC (SMA)._第2张图片

DO-214AA (SMB), DO-214AB (SMC), and DO-214AC (SMA)._第3张图片

 

 DO-214AA (SMB), DO-214AB (SMC), and DO-214AC (SMA)._第4张图片

DO-214AA (SMB), DO-214AB (SMC), and DO-214AC (SMA)._第5张图片

DO-214AA (SMB), DO-214AB (SMC), and DO-214AC (SMA)._第6张图片

从以上的图片看来,这三种封装看上去差不多,没什么区别,但从实物体积上来分,可以看出:

SMA < SMB < SMC.

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