Ambient Temperature: +25°C
Detector Operating Temperature -25°C
Typical Cooler Power @/or near Max. Cooling: AT1 – 1.0 volts @1.2 amps
AT1S – 1.8 volts @ 1.2 amps
Standard Specifications – Electrical
All detector specifications are at a bias voltage of 50 V/mm distance between electrodes applied across the detector and with a one megohm load resistor in series. All specifications apply at or near maximum cooling with the heat sink @ +25°C.
Minimum Typical Maximum Units
Wavelength of Max. Response 2.4 2.5 µm
D*(500K, 650 Hz, 1Hz) 1.0 x 109 1.5 x 109 cm Hz1/2 w-1
D*( lpk, 650 Hz, 1 Hz) 1.0 x 1011 1.5 x 1011 cm Hz1/2 w-1
Element Resistance (Dark) 1.5 3.0 10.0 Megohms/PbS One Stage
Time Constant (not measured) 800 1600 µsec
Rated Element Temperature +65 °C
DT@/or near Max. Cooling 45 50 °C

For square or rectangular element sizes and/or packages not listed, pleasecontact our application engineers, phone (707) 303-3837, or fax (707) 545-5113.

When using the table below, remove parenthesis and insert appropriate designation for package type in this space: Example: 6 for TO-66, 7 for TO-37, 8 for TO-8.

Model
Number		 Element Size
(mm)		 Responsivity
(lpk, 650) vw-1		 Standard Package
Options
Minimum Typical
AT1-1( ) 1 x 1 1.3 x 106 1.9 x 106 TO-37,TO-8
AT1-2( ) 2 x 2 6.3 x 105 9.5 x 105 TO-37,TO-8
AT1-3( ) 3 x 3 4.2 x 105 6.3 x 105 TO-37,TO-8
AT1S-4( ) 4 x 4 3.1 x 105 4.7 x 105 TO-66, TO-8
AT1S-5( )* 5 x 5 2.5 x 105 3.8 x 105 TO-66, TO-8
AT1S-6( )* 6 x 6 2.0 x 105 3.0 x 105 TO-66, TO-8
AT1S-103** 10 x 10 1.2 x 105 1.8 x 105 TO-3
* Minimum D*(lpk, 650, 1) >8.0 x 1010 cm Hz1/2 w-1
**Minimum D*(lpk, 650, 1) >7.0 x 1010 cm Hz1/2 w-1