TLP621-1 Optocoupler DIP-4 Single Channel
Prices updated: 13 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 Makers Electronics | TLP621-1 DIP-4 Optocoupler | 15 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 15 EGP
About this product
The TLP621-1 is a single-channel optocoupler with an infrared LED and a phototransistor output in a 4-pin DIP package. It provides electrical isolation between two circuits. It is used in switch-mode power supply feedback, relay driver boards and microcontroller interfaces where the grounds must be separated.
Specifications
- Channels
- 1
- Collector-emitter voltage (VCEO)
- 55 V
- Forward current (LED side)
- 16 mA
- Current transfer ratio (max)
- 600 %
- Collector-emitter saturation voltage
- 400 mV
- Operating temperature
- -55 °C to +100 °C
- Package
- PDIP-4
Frequently asked questions
What is the price of TLP621-1 Optocoupler DIP-4 Single Channel in Egypt?
TLP621-1 Optocoupler DIP-4 Single Channel currently costs 15 EGP in Egypt.
Where can I buy TLP621-1 Optocoupler DIP-4 Single Channel in Egypt?
TLP621-1 Optocoupler DIP-4 Single Channel is available from Makers Electronics. Compare the offers above to find the best price.
How do I limit the LED current?
Place a series resistor between the input supply and pin 1 (anode), and connect pin 2 (cathode) to ground. Keep the forward current at or below 16 mA, as stated in the listing.
Does the output need a pull-up resistor?
Yes. The output is an open phototransistor collector, so a pull-up resistor from the supply to pin 4 is needed to get a logic-high level. Connect pin 3 (emitter) to ground for a low-side output.
