What is Phototransistor?
A Phototransistor is an electronic switching and current amplification component which relies on exposure to light to operate. When light falls on the junction, reverse current flows which are proportional to the luminance. Phototransistors are used extensively to detect light pulses and convert them into digital electrical signals.
Part Number: DPC-817C
Functions: Phototransistor, Photocoupler
Package: DIP 4 Pin Type
Manufacturer: KeepJump International Technology
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Description:
The DPC-817C series are optically coupled isolators containing a GaAs light emitting diode and an NPN silicon phototransistor.
By utilizing light as the medium for signal transmission, photocouplers offer several advantages:
1. Electrical isolation: They provide complete electrical separation between the input and output circuits, preventing the transfer of electrical noise, voltage spikes, or ground loops.
2. Signal amplification: The phototransistor or photodiode on the output side can amplify the weak input signal, enabling efficient signal transmission across the isolation barrier.
3. Protection: They can protect sensitive components or circuits from voltage surges, transient voltages, or high-frequency interference.
Features:
1. Current transfer ratio (CTR: 50~600% at IF =5mA, VCE =5V)
2. High isolation voltage between input and output (Viso=5000 Vrms )
3. Creepage distance >7.62 mm
4. Operating temperature up to +110°C
5. Compact small outline package
6. Pb free and RoHS compliant.
Pinouts and schematic:
Applications:
1. Computer terminals.
2. System appliances, measuring instruments.
3. Registers, copiers, automatic vending machines.
4. Electric home appliances, such as fan heaters, etc, of different potentials and impedances.
5. Signal transmission between circuits
DPC-817C Datasheet File
Information related to components
Transistor DPC-817C - - Keepjump  |
PC817 - 4 PIN DIP PHOTOTRANSISTOR PHOTOCOUPLER - Gme - PDF
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