Can you identify this component?

[SteveThackery]

Colleagues,

Have you any idea what this component is?  It has a distinctive shape but no markings.  It is inside a low-cost projector which projects slowly moving patterns on the ceiling.  All the other components apart from this one are SMD; this is a PTH device and, strangely, is spaced well away from the board at an angle.  The leads are marked O, G and V on the circuit board.  See attached photos.

All ideas welcome!

[Grandchuck]

Sensor ... maybe Hall effect?

[Gyro]

It's an IR remote control sensor. Pins are V = supply (probably 5v) G = Ground and O = Output.

[SteveThackery]

It's an IR remote control sensor. Pins are V = supply (probably 5v) G = Ground and O = Output.

Ah, of course!  The projector does have a remote control, and I just assumed it was RF.  But you are right, it has an LED. So the IR sensor is spaced away from the LEDs and upwards into the area where IR can reach it.

Thanks!

[Sassy Taste]

Is that a transistor?  3 legged creatures.  It looks like a mosfet.

[SteveThackery]

Is that a transistor?  3 legged creatures.  It looks like a mosfet.

Did you read the thread? 

[BadeBhaiya]

Infrared receiver.

These usually have the receiver itself, and also a filter for a certain carrier frequency. Usually its between 38KHz to 40KHz

[tooki]

Infrared receiver.

These usually have the receiver itself, and also a filter for a certain carrier frequency. Usually its between 38KHz to 40KHz

It’s more than that. Not only a filter for a given carrier frequency, but one optimized for the combination of carrier frequency and a particular signaling protocol and for specific noise environments. (Like how Bluetooth and Wi-Fi actually induce interference in older IR receivers; modern ones are expressly designed to deal with this.)

For example, 38kHz is commonly used with the NEC protocol, but is sometimes used with others, and those may benefit from different optimizations.

See the attached PDF from Vishay, which is the leading IR receiver manufacturer (original URL: https://www.vishay.com/docs/80071/dataform.pdf )

Also, 56kHz is another very common carrier frequency, especially in European devices.