Infra Red Source Series 500 pages

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 #

Description

IR 50

IR Source mounted in a TO5
header

IR 55

IR Source mounted with a
Parabolic Reflector

Normal Operating Specifications:
Temperature

750° (1025K)
C

Voltage

6.4 volts RMS (AC or DC)

Current

0.135 Amps

Active Area

1.7 x 1.7 mm

Modulation
Rate

Up to 100 Hz

Lifetime

3+ years at 750° typical
C,
Scitec Instruments Ltd
Bartles Industrial Estate
North Street
Redruth
Cornwall TR15 1HR
United Kingdom
t.
f.
i.
e.

Issue 1.3

+44 [0]1209 314608
+44 [0]1209 314609
www.scitec.uk.com
scitec@scitec.uk.com