Convergence ICs: Sony $62, Sanyo $19, Chinese $6.50

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Convergence ICs: Sony $62, Sanyo $19, Chinese $6.50

All:

Two questions:
1) I found Encompass Parts (https://www.encompassparts.com) that seemingly provide SONY made components. For the STK4278-L IC on the D board, they have:

SONY Part Number 8-749-923-16 STK4278-L $62.82
Japanese semi's (likely Sanyo) 8-749-923-16 STK4278-L $19.95
SANYO is the brand carried by almost all sites as "genuine SANYO."

Some sites offer Chinese STK4278-L $6.95

Is there a real difference between SANYO and SONY other than brand cost?

2) What is the difference between stk4278-L and stk4278 ICs?

THanks.

 

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