Breckland Scientific 2021 Catalogue

Electricity & Electronics

Electronic Components

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1 THERMISTORS A range of NTC (Negative Temperature Coefficient) miniature disc thermistors, for general purpose applications such as temperature measurement and thermal compensation circuits. Also useful in the classroom for demonstrating how the resistance changes with temperature. A thermistor is a temperature dependant resistor or ‘thermal resistor’. Working temperature range of -30°C to +125°C with a tolerance of 10%. Cat No. Description Price Per ECO-370-050 Thermistors 100Ω 4.29 10 ECO-370-100 Thermistors 300Ω 3.25 10 ECO-370-150 Thermistors 1KΩ 3.24 10 ECO-370-200 Thermistors 5KΩ 3.24 10 ECO-370-250 Thermistors 20KΩ 4.50 10 2 DIODE RECTIFIER 1N4001 DO-41 Plastic case, 1A silicon rectifier diodes. 1A/50V. Pack of 10. Cat No. Description Price Per ECO-100-100 Diode Pack 0.80 10 3 LEDS (Light Emitting Diode) Standard 5mm. Max voltage 3V. Fore LED holders see page 90. Cat No. Description Wavelength Price Per ELB-350-100 Red LED 627nm 1.16 10 ELB-350-150 Green LED 565nm 1.16 10 ELB-350-200 Yellow LED 590nm 1.16 10 ELB-350-250 White LED n/a 3.55 10 ELB-350-300 Blue LED 470nm 3.45 10 ELB-450-100 LED Holder 6.13 10 4 LIGHT DEPENDENT RESISTOR NORPS12 Photoconductive cadmium sulphide cell with a spectral response similar to the human eye. As light falling on the cell increases, so the resistance of the cell decreases. Peak spectral response: Typically. 550nm. Cell resistance: 9K Ohm at 10 lux. 400 Ohm at 1000 lux. Dark resistance: Min. 1M Ohm. Pack of 5. Cat No. Description Price Per ECO-150-100 Light Dependent Resistor Pack 7.06 5 5 MINIATURE LIGHT DEPENDENT RESISTOR Photoconductive cadmium sulphide light dependent resistor (LDR) in a miniature 4mm dia. epoxy sealed frame. Cell resistance reduces as light falling on the device increases. Typical applications include light control, cameras, toys etc. Sold as a pack of 10.

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Thermistors

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Diode Rectifier

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L.E.D.s

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• Peak spectral response: 540nm. • Light resistance: 50-100Kohm • Dark resistance: 20Mohm minimum • Max. voltage: 100V • Power max: 90mW • Working temp. range: -20 to +60° Cat No. Description

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Light Dependent Resisitor

Minature Light Dependent Resisitor

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ECO-130-100 Miniature Light Dependent Resistor

2.32 10

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6 REED SWITCH General purpose SPST magnetic reed switch. Cat No. Description

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ECO-250-100 Reed Switch Pack

2.88 5

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Reed Switch

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