The packaging of A4B-**PA-2***(51) is bag,
its order unit is piece and order quantity is multiple of 100 pcs.However, A4B-**PA-2***(71) has been discontinued already.
The difference is the dimensions of the part to be locked.
As the difference is only 0.3mm, they are interchangeable.However, 60 contact are not compatible.
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In cases where the application will demand a high level of reliability, such as automotive, please contact a company representative for further information.