SN74HC4020: SN74HC4020

Richard Barger

Prodigy 20 points

Part Number: SN74HC4020

Tool/software:

Hello,

We are seeing this discoloration as well on our TI SN74HC logic parts.

What is the cause ?

5 months ago

0 Ian Graham 5 months ago

TI__Expert 5521 points

Hi Richard,

These pins look like they've been roughened. Roughened leadframes are an improvement to the older leadframe technology and provide improved solder adhesion. They do not affect device performance. For more information, please see this FAQ: [FAQ] Why do the leadframes look strongly oxidized or corroded?

Best,

Ian

Logic

Logic forum

SN74HC4020: SN74HC4020