Internals of beleuchtungschalttafel-3000L (normally covered by a phosphor). Each series chain of 12 (4x3) LEDs is powered by a single LED driver. Chain 1 = 1-A, 1-B, 1-C, 1-D. Chain 2 = 2-A, 2-B, 2-C, 2-D. The metal box itself serves as a heatsink.
Digi-Key Item No
788-1057-ND INDUS STAR LED MODULE R.BLUE
788-1038-ND LED DRIVER 48V 700MA
377-1003-ND CHASIS ALUM 12X8X2.5" NAT
987-1400-ND POT SLIDE 10K OHM .2W 30MM
1079-1022-ND CHROMALIT PANEL 80CRI 305X215MM (Note: 4000K phosphor, for night use recommend 3000K equiv.)
BER246-ND THERMAL TAPE DOUBLE SIDED .005"