KF50BD-TR wrong pin 1 marker?

DD2026 · ‎2026-05-24

KF50BD-TR The goods have a pin indicator,but it is not shown in the datasheet .Please check attached photos.

Is the product with pin indicator original?

loveforcircuits · ‎2026-05-24

What about the performance? Did you see any anomaly while using it?

Peter BENSCH · ‎2026-05-25

As @Andrew Neil already wrote in your other thread, on this device pin 1 is marked with a chamfered edge. The circle is only an imprint from the ejector during moulding.

Whether the component is original, you need to ask your supplier; this cannot be determined beyond doubt from a photo. If the supplier is one of the authorized distributors, they will be able to give you this information.

Regards
/Peter

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Andrew Neil · ‎2026-05-26

As @Peter BENSCH said, the pin 1 position is given by the defined chamfer on the package:

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.