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PT333B 5mm Infrared Photo Transistor

PT333B 5mm Infrared Photo Transistor - Main image
PT333B 5mm Infrared Photo Transistor
$0.1 $0.17 In stock

Category: Transistors

The PT333 series (HCOPTO0063) consists of a NPN silicon photo transistor encapsulated in a dark blue/black plastic package. Its dark blue package is designed to cut out visible light and so it suitable for the detection of infrared applications at wavelengths around 860nm. They can be used in combination with our 5mm infrared LED's for communication IR distance sensing.

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Customer Reviews (3.8 / 5 · 5 reviews)

Sofia ★★★★★

Finally a photo transistor that actually blocks ambient light properly—the dark blue casing makes a real difference in my indoor projects. Sensitive enough to trigger from a standard IR LED across the room.

Hazel ★★★★★

I needed a sensor that wouldn't pick up ambient room lights, and the dark blue package on these does exactly that — they only trigger on my IR remote. Worked perfectly for my line-following robot project.

Abigail ★★★☆☆

The dark blue casing does a decent job filtering out ambient light, but the sensitivity seems a bit inconsistent compared to other NPN transistors I've used. It works fine for basic proximity sensing indoors.

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