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RadioShack® Infrared LED Emitter and Detector

Model:

276-142

 | Catalog #: 276-142
Price:
$3.99
$3.99
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Product Summary

The tools and components your project requires.

Use this RadioShack infrared LED emitter and detector in your latest hobby project.
Emitter Specs (tinted package)

  • Reverse voltage: 5V
  • Cont. forward current: 150mA
  • Forward voltage: 1.3V typical, 1.7V max
  • Radiant power output: 13-15mW
  • Wavelength (peak emission): 950nm

  • Detector Specs (max)
  • VCEO (collector to emitter): 70V
  • VECO (emitter to collector): 5V
  • IC (collector current): 50mA
  • Total power dissipation : 150mW
  • Peak sensitivity wavelength: 850nm
  • Spectral bandwidth range: 620-980nm
  • Angle of half sensitivity: +/- 20°
  • Pricing and availability: Please note that all prices are subject to change without prior notice. Prices advertised on this site are for online orders only. Prices on some items may differ from those advertised in RadioShack stores. All merchandise may not be available at all stores, and all stores may not participate in all sales promotions. We recommend you contact the store to confirm product availability and price.

    What's in the box

    • Infrared emitter - 2V 40mA
    • Phototransistor detector - 20V 25mA
     

    Shipping

    Usually ships in 1 - 2 business days

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    Other ways to get it


    In store: Check availability
    By phone: 1-800-843-7422

    Manufacturer Warranty

    • Parts: 90 days
    • Labor: 90 days
    Tech Specs

    Customer Reviews

    REVIEW SNAPSHOT®

    by PowerReviews
    RadioShack® Infrared LED Emitter and Detector
     
    3.3

    (based on 29 reviews)

    Ratings Distribution

    • 5 Stars

       

      (9)

    • 4 Stars

       

      (6)

    • 3 Stars

       

      (5)

    • 2 Stars

       

      (2)

    • 1 Stars

       

      (7)

    60%

    of respondents would recommend this to a friend.

    Pros

    • Reliable (7)
    • Versatile (7)
    • Easy to use (3)

    Cons

    • Incompatible (3)

    Best Uses

    • High-end equipment (4)
      • Reviewer Profile:
      • Power user (10), Enthusiast (9), Casual user (4)
      • Primary use:
      • Personal (22), Business (3)
      • Was this a gift?:
      • No (16)

    Reviewed by 29 customers

    Sort by

    Displaying reviews 1-10

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    4.0

    Just a reminder

    By KAB

    from Tucson AZ

    About Me Casual User

    Verified Reviewer

    Pros

    • Consistent Performance
    • Versatile

    Cons

      Best Uses

        Comments about RadioShack® Infrared LED Emitter and Detector:

        Just a reminder, photodiodes are designed to work in reverse biased mode. For most diodes you connect the negative terminal to the emitter, and the positive to the collector. Like zener diodes,photodiodes normal operation is positive to the emitter, and negative to the collector. Typical current is in the tens of microamps and you'll probably need to amplify that signal to make use of it.

        • Primary use:
        • Personal
        • Was this a gift?:
        • No

        (2 of 3 customers found this review helpful)

         
        1.0

        Package Incorrect

        By TexanFromIowa

        from Dallas, TX

        About Me Power User

        Pros

          Cons

          • Incompatible
          • Incorrect Packaging

          Best Uses

            Comments about RadioShack® Infrared LED Emitter and Detector:

            I picked up this pair in order to do a demo of using IR. I blew up the detector the first time I put 5V on it, and burned up the emitter shortly thereafter. It was only later that I discovered that the package data was wrong and incorrect resistors were used, and that it has been a problem for several years. This is EXTREMELY disappointing. Also, in my further reading, I have found that this is NOT a matched pair that is using the same IR frequency. The detector is a general phototransistor and can be thrown off by other signals and frequencies. I might have been able to use this for my demo had the packaging been correct, but I would not use this is a real project.

            • Primary use:
            • Personal
            • Was this a gift?:
            • No

            (1 of 2 customers found this review helpful)

             
            4.0

            Lead Length abnormal

            By Dougie Gee

            from SW PA

            About Me Power User

            Verified Reviewer

            Pros

            • Available
            • Parts Work

            Cons

            • Receiver Lead Lengths Bad

            Best Uses

              Comments about RadioShack® Infrared LED Emitter and Detector:

              I've bought two packages of these pairs. In both packages, the emitter was correctly labeled as the darker package. One package had lead length problems with the receiver. Normally the Anode lead (+ lead) is longer than the cathode lead (- lead). In this package, the flat side was the cathode as it should be but the anode side had a shorter lead. I had to look at the internals of the part from the one I already had working to figure out which lead was the correct one. In the end, I ended up disregarding the lead length and went with the flat side of the package for the cathode (I guess in this case, the emitter of the phototransistor).

              • Primary use:
              • Personal
              • Was this a gift?:
              • No

              (2 of 2 customers found this review helpful)

               
              4.0

              Works as advertised for me

              By SteveT

              from Boston, MA

              About Me Casual User

              Pros

              • Consistent Performance

              Cons

                Best Uses

                • Dorm Room

                Comments about RadioShack® Infrared LED Emitter and Detector:

                The components were as labeled on the package for me - dark is the emitter, clear the detector.

                Thanks to Matt for the hint about using a cell phone camera to see the ir light from the emitter, this was like magic!

                Re. cathode & anode - the longer terminal is the anode on mine. Relevant data for the components is printed on the back of the package, so perhaps the problems some people noted above have been fixed.

                Oh, and the signal from the emitter seems to come out more strongly from the top of the diode.

                • Primary use:
                • Personal
                • Was this a gift?:
                • No

                (2 of 2 customers found this review helpful)

                 
                4.0

                Sense an object moving up/down a ramp

                By Dan

                from Wayland Massachusetts

                About Me Enthusiast

                Pros

                  Cons

                    Best Uses

                      Comments about RadioShack® Infrared LED Emitter and Detector:

                      Easy to implement using the information on the package. I used it to detect a toy car's position as it moved up and down a 7 foot ramp.

                      • Primary use:
                      • Personal
                      • Was this a gift?:
                      • No

                      (7 of 8 customers found this review helpful)

                       
                      3.0

                      The package description is correct now.

                      By Matt S.

                      from Oklahoma

                      About Me Power User

                      Verified Reviewer

                      Pros

                        Cons

                          Best Uses

                            Comments about RadioShack® Infrared LED Emitter and Detector:

                            At the time of this writing (6-28-12) the package description is correct. The EMITTER is the DARK one and the DETECTOR is CLEAR. Unfortunately, I blindly went by what others had said and blew up my detector. Here's how you can determine which is which easily: First, get a 3.9k resistor and connect the dark one (emitter) to 5 volts. Why 3.9k? Because the detector has a 1 mA current rating, which is the lesser of the two. By doing this first, you avoid the risk of blowing up the one your testing. Now get out your phone and point your camera at the LED. It should glow purple when the power is on. That's the emitter. Alternatively, you can use the diode test function on your DMM. You should get 1.2v on the emitter one way, and open when the leads are switched. The detector will show an open both ways. (Turn off the lights first to be sure) Now hook up your emitter to a 100 ohm resistor. That should give about the maximum current for it. Connect your detector to the DMM, set it to the diode testing function, wave it in front of the emitter and observe the forward voltage on your DMM. It should go from open to about 1.8v or so. If you do accidentally blow up the detector buy a replacement "phototransistor" part no. 276-145

                            • Primary use:
                            • Personal
                            • Was this a gift?:
                            • No

                            (1 of 1 customers found this review helpful)

                             
                            3.0

                            Just as advertised

                            By Vid

                            from Buffalo, NY

                            About Me Power User

                            Verified Reviewer

                            Pros

                            • Versatile

                            Cons

                            • Minimum range

                            Best Uses

                            • Hobby projects

                            Comments about RadioShack® Infrared LED Emitter and Detector:

                            I have used several of these on various hobby projects, but just as a photointerruptor, not sending signals via IR. It works fine in that application. On every package I've used the emitter is tinted and the phototransistor is clear. The description on the bag was spot on.

                            • Primary use:
                            • Personal
                            • Was this a gift?:
                            • No

                            (6 of 6 customers found this review helpful)

                             
                            1.0

                            NOT a matched pair

                            By Burned by Radio Shack

                            from NC

                            About Me Power User

                            Pros

                              Cons

                              • Incompatible

                              Best Uses

                                Comments about RadioShack® Infrared LED Emitter and Detector:

                                This pair are NOT a matched pair of IR emitter and detector as one would expect. The emitter is truly and IR emitter and works ok (but is pretty weak). The 'detector' is really just a photo transisitor, which is fine for detecting visible light, but isn't as sensitive to the IR spectrum as one would expect from the packaging. If you are looking for a matched pair of IR emitter/detector, I'd recommend [@].

                                • Primary use:
                                • Personal
                                • Was this a gift?:
                                • No

                                (3 of 3 customers found this review helpful)

                                 
                                1.0

                                infrared "emitter and detector"

                                By Les

                                from Asheville, NC

                                About Me Enthusiast

                                Pros

                                  Cons

                                    Best Uses

                                      Comments about RadioShack® Infrared LED Emitter and Detector:

                                      Read the rest of the reviews. I had the same problem that everyone else had. The package was labeled wrong and It didnt work the way it should. From the looks of it this has been a problem for three years now and Radioshack still hasnt done anything about it obviously. Very poor documentation and a lack of response to the costomer. Very dissapointed in Radioshack.

                                      • Primary use:
                                      • Personal
                                      • Was this a gift?:
                                      • No

                                      (4 of 4 customers found this review helpful)

                                       
                                      2.0

                                      Packaging is all wrong

                                      By TBinWillowPark

                                      from Willow Park, TX

                                      About Me Casual User

                                      Pros

                                      • Available locally

                                      Cons

                                      • Package is all wrong

                                      Best Uses

                                        Comments about RadioShack® Infrared LED Emitter and Detector:

                                        I wasted an hour trying to adjust resistor values researching possible failure causes. Turns out the package says the emmitter is tinted and it is NOT. One drawing on the package says the emmitter collector is the short side with flat and the other image is the opposite. Disapointed with the Shack..

                                        • Primary use:
                                        • Personal
                                        • Was this a gift?:
                                        • No

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