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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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Price:
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Availability:

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Usually ships in 1 - 2 business days
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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
     
    3.2

    (based on 30 reviews)

    Ratings Distribution

    • 5 Stars

       

      (9)

    • 4 Stars

       

      (6)

    • 3 Stars

       

      (5)

    • 2 Stars

       

      (2)

    • 1 Stars

       

      (8)

    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 (5)
      • Primary use:
      • Personal (23), Business (3)
      • Was this a gift?:
      • No (17)

    Reviewed by 30 customers

    Sort by

    Displaying reviews 1-10

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    (0 of 2 customers found this review helpful)

     
    1.0

    Beware - what are these components?

    By Lance

    from PA

    About Me Casual User

    Pros

      Cons

      • Compo Not Clearly Defined

      Best Uses

        Comments about RadioShack® Infrared LED Emitter and Detector:

        The package wasn't clear so I thought I was buying an LED and a phototransistor in this package. After trying many different ways to get these to work together, I found out that the detector is a photodiode and not a phototransistor. I purchased a phototransistor in a separate package from radioshack and it worked as I needed.

        The LED was the tinted component and the photodiode was the clear component.

        • Primary use:
        • Personal
        • Was this a gift?:
        • No
         
        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 4 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

                          (8 of 9 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 7 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 4 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

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