Truopto 2mm 12v tower leds diffused lens ttl compatible truopto osy5ja7k94b 12v a 12v yellow 2mm tower led from truopto that is a ttl compatible solid state lamp with an integral current limiting resistor so there is no requirement for external current limiting components simplifying design and saving cost the high luminosity and long lifetime of this tower led makes it suitable for many applications in electronic signage signalling small area illumination and backlighting truopto osy