Luna Optoelectronics, NSL-19M51 LDR (Light Dependent Resistor) 20 kΩ Light, 20MΩ Dark, 2-Pin TO-18

  • RS Stock No. 596-141
  • Mfr. Part No. NSL-19M51
  • Brand Silonex
Technical Reference
Legislation and Compliance
Non Compliant
Product Details

CdS cell, NSL series, Silonex

Light dependent resistors are two cadmium sulphide (cDS) photoconductive cells with responses similar to that of the human eye. The cell resistance falls with increasing light intensity.

Solid-state photosensor that uses photoconductivity to lower resistance value when irradiated with light
Ceramic package with sensitivity up to 690 nm
TO-5 and TO-18 packages
Suitable for use in applications like street light auto-flashers and camera light metres


Applications include
Smoke detection
Automatic lighting
Control batch counting
Burglar alarm systems


Photodiodes, Silonex

Attribute Value
Minimum Light Resistance 20 kΩ
Dark Resistance 20MΩ
Typical Fall Time 55ms
Typical Rise Time 45ms
Resistor Material CdS
Number of Pins 2
Mounting Type Through Hole
Package Type TO-18
Maximum Light Resistance 100kΩ
Maximum Operating Temperature +75°C
Minimum Operating Temperature -60°C
Voltage Rating 100 V
Operating Temperature Range -60 → +75°C
Light Resistance Range 20 kΩ → 100 kΩ
Power Dissipation 50mW
Discontinued product