Written by Accutron on 2007-03-19  

Devices included in this entry:

CEMI CQYP 32A LED indicator (pictured in thumbnail)
CEMI CQDP 40 LED indicator

The CEMI CQYP 32A and CQDP 40 are Polish-made 4mm LEDs which appear externally identical to the Monsanto MV1, but are internally more similar to a modern LED. The dies appear to be standard GaP and GaAsP construction from the 1970s or 1980s, and are mounted in a typical small reflector cup. Also unlike the MV1, the CQYP 32A and CQDP 40 have a tinted epoxy which matches their indicator color.

Special thanks to Zygmunt Flisak for identifying these obscure devices.

CEMI CQYP 32A green LED indicator.

CEMI CQDP 40 red LED indicator.

This article is part of the [Discrete Optoelectronics] exhibit.

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