R36DS0013EU0100 Rev.1.00

Page 2

Aug 31, 2021

RTD120D Datasheet

1. Specifications

Specifications apply at 23C with KBr Window and Nitrogen encapsulating gas.

Symbol

Parameter

Min.

Typ.

Max.

Unit

Comments[1]

1. General specifications: Flat spectral response from 100nm to > 100µm. Linear signal output from 10-6 to 0.1W/cm2. Maximum incident

radiance 0.1W/cm2, damage threshold ≥ .5W/cm2.

AA

Active Area size

1.2 × 1.2

mm

Hot junction size, per element.

A

Element Area

1.44

mm2

Number of Junctions

80

Per element.

Number of Channels

2

Per detector package.

Vs

Output Voltage

133

161

189

µV

DC, H = 330µW/cm2 [2]

2. Test conditions: 500K Blackbody source; Detector active surface 10cm from 0.6513cm diameter Blackbody Aperture.

SNR

Signal-to-Noise Ratio

3,067

4,197

5,225

√Hz

DC, SNR = Vs/Vn

R

Responsivity

28.0

33.9

39.8

V/W

DC, R = Vs/HA [3]

3. A is detector area in mm2.

R

Resistance

80

90

115

kΩ

Detector element

Temperature Coefficient of R

-0.04

%/°C

Best linear fit, 0° to 85°C [4]

4. Parameter is not 100% tested. 90% of all units meet these specifications.

Temperature Coefficient of R

0.02

%/°C

Best fit, 0° to 85°C [4]

Vn

Noise Voltage

36.2

38.4

43.4

nV/√Hz

Vn 2 = 4kTR

NEP

Noise Equivalent Power

0.91

1.13

1.55

nW/√Hz

DC, NEP = Vn HA/Vs [3]

D*

Detectivity

0.77

1.06

1.32

108cm√Hz/Ω DC, D* = Vs/ Vn H√A [3]

T

Time Constant

25

ms

Chopped, -3dB point [4]

FOV

Field of View

8°/60°

Degrees

For FOV description, see Package

Outline Drawings

Package Type

TO-5

Standard package hole size:

0.060” × 0.060”

M

Element Matching

25

%

M = |VA-VB|/VB [3]

Element Separation

3.30

mm

Center to center

Ta

Operating Temperature

-50

+125

°C

Reference Filter, Central

Wave Length

3.920

µm

Element A

CO2 Filter, Central Wave

Length

4.260

µm

Element B