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Infra Red Source Series 50

Infra Red Source Series 50
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SERIES 50 THIN FILM 0.9 WATT INFRA-RED EMITTER The IR-50 range of infra red sources is based around a very low thermal mass diamond-like carbon thin film element. Due to the low thermal mass, the infra red source can be pulsed at frequencies up to 100Hz with good modulation depth, or contrast between the on and off states. It is therefore suitable for use with quantum detectors like photoconductive PbS and PbSe, which otherwise would require a chopper to avoid excess low frequency "flicker" (1/f) noise. This source is significantly better, watt for watt and Hz for Hz, than any competing non-mechanical modulation that technology offers. This new source has an active area of approximately 2.89 mm² (1.7 x 1.7 mm) and is supplied in a TO-5 style package. The normal working range is 500° to 750° with peak short term heating up to 850° C C possible. Calculated lifetime is approximately three years. The Series 50 is offered as follows: Part # IR Source mounted in a TO5 header IR Source mounted with a Parabolic Reflector Normal Operating Specifications: Temperature Active Area Modulation Rate 3+ years at 750° typical C, Scitec Instruments Ltd Bartles Industrial Estate North Street Redruth Cornwall TR15 1HR United Kingdom t. f. i. e.

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Operating Guidelines The IR-50 Series utilizes a thin thermoresistive conducting film of amorphous (diamond-like) carbon. Infrared radiation is the result of heating this film by passing an electric current through it. Either a constant voltage or a constant current power source is suitable for driving these parts, however it is the temperature of the source that is important. The maximum temperature of the film should not exceed 750° in continuous operation. A faint red luminesc ence C of the film is observed during continuous operation at temperatures near 750° Short term heating up to C....

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