Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Photo Tube ·PhotoconductiveDetector

61SV

Uncooled lead-sulphide photoconductive infrared cell designed for detection of chopped or pulsating infrared radiation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

Uncooled lead-sulphide photoconductive infrared cell for chopped or pulsating radiation, with high room-temperature infrared sensitivity.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

PhotoconductiveDetector

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Promoted values are taken directly from the supplied datasheet; additional ratings, characteristics and operating points are preserved in TUBE_SECTION_PARAMETER.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

PhotoconductiveDetector

Other

  • Maximum applied voltage

    250 V

  • Maximum current

    500 uA

  • Maximum operating ambient temperature

    60 degC

  • Maximum storage temperature

    60 degC

Characteristics

  • Peak spectral response

    2.5 um

  • Spectral response minimum

    0.3 um

  • Spectral response maximum

    3.5 um

  • Sensitivity

    180 uV/uW

    BlackBody=200C;Peak

  • Signal-to-noise ratio

    150 ratio

    BlackBody=200C

  • Noise equivalent power

    5e-12 W

    Bandwidth=1Hz

  • Sensitivity to tungsten light

    3 mA/lm

    Peak;2700K

  • Time constant

    75 us

  • Noise equivalent power

    5.5e-11 W

    Wavelength=2um

  • Dark-resistance temperature coefficient

    -2 %/degC