IR receiver vs phototransistor

Discussion in 'General Electronics Chat' started by Razor Concepts, Dec 24, 2009.

  1. Razor Concepts

    Thread Starter Senior Member

    Oct 7, 2008
    For infrared communication, it looks like IR receivers (3 leads) are preferred over phototrasistors (2 leads, many look like LEDs). Why is this? Is it because the phototransistors are very directional?
  2. russ_hensel

    AAC Fanatic!

    Jan 11, 2009
    May or may not be preferred. Many 3 wire ir recievers have a 38 k hz filter and demodulator going to a gate of some sort. Good for recieving digital data from a transmitter. Pick a part number and get a spec sheet.