From Deep UV to Mid-IR

An ITW Company

Infrared Emitters – SVF Series

KEY FEATURES• Pulsable Sources of Black-Body Radiation• Emulates a Black-Body in Spectral Distribution• Ultra-Thin Metallic Foil Active Element• Parabolic Reflectors for Collimation and Uniformity• Typical Emissivity 0.88

Pulsable Infrared Emitters - SVF Series
Opto Diode SVF Series infrared (IR) emitters are designed to be used as pulsable sources of black-bodyradiation.
The radiating element in the pulsable emitters is an ultra-thin Opto Diode specific metallic foil configured so thatradiation from both sides of the heated foil is efficiently directed out of the package along the optic axis. The foilmaterial has typical emissivity of 0.88 and closely emulates a black-body source in spectral distribution. SVFSeries emitters are designed to operate at a rated maximum foil temperature of 1000 K.
Standard SVF Series emitters are offered in sealed TO-5 or TO-8 packages in a variety of foil thickness andwidth.
Several standard window materials are available to tailor the output to specific wavelength ranges of interest.
SVF Series emitters are offered with an integral reflector. Standard parabolic reflectors provide near collimatedand uniform radiation output. A variety of elliptical reflectors with varying focal lengths are also available forcoupling into optical fibers or other applications.

Revision May 22, 2019

Page 1 of 9

From Deep UV to Mid-IR

An ITW Company

Infrared Emitters – SVF Series

Drive Circuit
Switching device like the IRF350, a 400 V single N-channel MOSFET with, very low on-state resistance combinedwith high transconductance, superior reverse energy and diode recovery dv/dt capability is suitable.

+–SourceDGIR350+S–Lifetime
All standard emitters have mean times to failure (MTBF) greater than 30,000 hours at the maximum rated power
input. Operation of the element above this input power may significantly reduce the lifetime.

Revision May 22, 2019

Page 2 of 9

From Deep UV to Mid-IR

Infrared Emitters – SVF Series

An ITW Company

Black-Body Radiant EmittanceSVF Series emitters approximate black-body sources at their particular operating temperature. Below is areference graph showing ideal black-body curves at various temperatures, in K.
3.0(W cm-2 micron-1)

2.52.0W500 (λ)
W750 (λ)
W1000 (λ)
W1170 (λ)

1.5
1.0
0.5
0.0

12345678910111213141516171819 20

λ (microns)

Revision May 22, 2019

Page 3 of 9

From Deep UV to Mid-IR

Infrared Emitters – SVF Series

An ITW Company

SVF Series TO-5
DC Power Curves (I vs. V)1

AMPS

2.0Curve
SourcePk DC PowerNo.
Model(watts)
1
SVF230-5M( )0.88
2SVF350-5M( )1.09

2 watts

1.0

1.5 watts
1 watts

20.5 watts

10.0
0.0

1.0

2.0VOLTS
11000 K at power indicated, exceeding this value will raise element temperature and decrease source lifetime.

Modulation Depth vs. Frequency
100MODULATION DEPTH (%)

CurveSource
Avg. Power* Freq. @ 50%
No.
Model(watts)
Modulation
1 SVF230-5M( )
0.44
15 Hz
2 SVF350-5M( )
0.55
10 Hz
* 50% duty-cycle, square wave

1210

1

10100

FREQUENCY (Hz)Average DC Intensity2 (@ 1000°K) vs. Angle (@ 3 inches)

WATTS PER CM2

1E-2
SVF230-5M2 (@ 0.9 watts)
SVF350-5M2 (@ 1.1 watts)

1E-3

1E-4-25-20-15-10-50510152025

POLAR ANGLE (degrees)
2

Average of values parallel and perpendicular to axis of element.

Revision May 22, 2019

Page 4 of 9

From Deep UV to Mid-IR

Infrared Emitters – SVF Series

An ITW Company

DC Intensity (@ 1000 K) vs. Distance

WATTS PER CM2

1E-1
SVF230-5M2 (@ 0.9 watts)
SVF350-5M2 (@ 1.1 watts)
1E-2

1E-3

1E-4

110
AXIAL DISTANCE (inches)

Revision May 22, 2019

Page 5 of 9

From Deep UV to Mid-IR

Infrared Emitters – SVF Series

An ITW Company

SVF Series TO-8
DC Power Curves (I vs. V)3CurveSourcePk DC PowerNo.
Model(watts)
1SVF350-8M( )2.3
2SVF360-8M( )
2.3

2.5

22

2.5 watts

AMPS

111.02 watts
1.5 watts
1 watts
0.5 watts

0.0
0.0

1.0

2.0

VOLTS
31000 K at power indicated, exceeding this value will raise element temperature and decrease source lifetime.

Modulation Depth vs. Frequency
100

MODULATION DEPTH (%)

CurveSource
Avg. Power* Freq. @ 50%
No.
Model(watts)
Modulation
1 SVF350-8M( )
1.1
11 Hz
2
SVF360-8M( )1.1
7 Hz* 50% duty-cycle, square wave

1210110100

FREQUENCY (Hz)Average DC Intensity4 (@ 1000 K) vs. Angle (@ 3 inches)

WATTS PER CM2

1E-2

1E-3-25

SVF350-8M2 (@ 2.3 watts)
SVF360-8M2 (@ 2.3 watts)-20-15-10-50510152025

POLAR ANGLE (degrees)
4

Average of values parallel and perpendicular to axis of element.

Revision May 22, 2019

Page 6 of 9

From Deep UV to Mid-IR

Infrared Emitters – SVF Series

An ITW Company

DC Intensity (@ 1000 K) vs. Distance

WATTS PER CM2

1E-1
SVF350-8M2 (@ 2.3 watts)
SVF360-8M2 (@ 2.3 watts)
1E-2

1E-3

1E-4

110
AXIAL DISTANCE (inches)

Revision May 22, 2019

Page 7 of 9From Deep UV to Mid-IRAn ITW Company

Infrared Emitters – SVF Series

TO-5 Package
0.260
45.0°

0.50 MIN
0.040 MAX

0.031

0.040

2X Ø0.018 ±0.002
0.250
0.325 APERTURE
AØ0.200Ø0.360MOUNTING SURFACE

TO-8 Package
MOUNTING SURFACE
0.225

A

0.390
0.025 MAX

0.112

6X Ø0.060

2X Ø0.018 ±0.002

0.375
0.550 APERTURE

0.375

0.187

0.031

0.50 MIN

Ø0.600

45.0°

0.031

0.254

28.6°

f2ELLLIPTICAL REFLECTOR

NUMERICAL APERTURE = 0.48

Revision May 22, 2019

Page 8 of 9

From Deep UV to Mid-IR

Infrared Emitters – SVF Series

An ITW Company

Window Spectral Transmission Options

TRANSMISSION (%)

100Sapphire(0.5 mm thick)Calcium Fluoride(1.0 mm thick)

80
60
40
2000.1110100WAVELENGTH (µm)

Ordering Information
SVF-XXXXX-YYY
SVF – S Source, VF Pulsable
XXXXX – Filament and Foil Dimensions
YYY – Packaging Options and Window Options
SVF230-5M2 (40103) Standard Pulsable Emitter 230 in TO5 Package with Sapphire Window
SVF350-5M2 (40106) Standard Pulsable Emitter 350 in TO5 Package with Sapphire Window
SVF360-8M2 (40432) Standard Pulsable Emitter 360 in TO8 Package with Sapphire Window
SVF230-5M3 (40104) Standard Pulsable Emitter 230 in TO5 Package with Calcium Fluoride Window
SVF350-5M3 (40107) Standard Pulsable Emitter 350 in TO5 Package with Calcium Fluoride Window
SVF350-8M3 (40172) Standard Pulsable Emitter 350 in TO8 Package with Calcium Fluoride Window
SVF360-8M3 (40110) Standard Pulsable Emitter 360 in TO8 Package with Calcium Fluoride Window

株式会社 アイ・アール・システム〒206-0041 東京都多摩市愛宕4-6-20 IRSビル電話:042-400-0373 FAX:042-400-0374
E-mail: office@irsystem.com Homepage: https://www.irsystem.com

Specifications are subject to change without prior notice.

1260 Calle Suerte, Camarillo, California 93012
Phone: +1 805.499.0335 | Fax: +1 805.499.8108 | sales@optodiode.com | www.optodiode.com
Revision May 22, 2019

Page 9 of 9