LM358: Why is the marking LM1580 printed on the internal DIE?

Icgoo Icgoo

Part Number: LM358
Other Parts Discussed in Thread: LM158-N, , , LM158

Hello,

After the part of LM358MX/NOPB is uncovered, it is found that LM1580 is printed on the die.

Pls help to checck the difference from part number and die marking.

Thank you.

+1 Clemens Ladisch over 1 year ago

Guru 267600 points

The LM158-N is the same device with a wider temperature range, so it's plausible for the LM358-N to use the same die.

The "D" migh be the die revision.

+1 Ron Michallick over 1 year ago

Hello Icgoo,

The metal designator has the expected text. LM158 and LM358 share the same metal layer. The last character is "D"

Is there a reason for uncovering the die?

0 Icgoo Icgoo over 1 year ago in reply to Clemens Ladisch

Hello Clemens,

Thanks very much.

+1 Icgoo Icgoo over 1 year ago in reply to Ron Michallick

Hello Ron,

Cover opening detection is the normal process of warehousing.

Thank you very much for your reply, which is very helpful to us.

Have a nice day.

0 Pete%20Semig over 1 year ago in reply to Icgoo Icgoo

Hello Icgoo,

Looks like your question has been answered. Please verify by clicking the Resolved button.

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