Details

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Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Forward Voltage	VF	IF = 20mA	1.1	1.3	1.5	V
Reverse Voltage	VRRM	Continuous	-	-	5	V
Forward Current	IF	Continuous	-	20	50	mA
Peak Forward Current	IF(surge)	t = 1s	-	-	150	mA
Output Current	IC	Continuous	-	30	50	mA
Collector-Emitter Saturation Voltage	VCE(sat)	IC = 50mA, IF = 5mA	0.3	0.4	0.5	V
CTR (Current Transfer Ratio)	CTR	IF = 5mA, IC = 50mA	50%	100%	200%	%
Rise Time	tr	VCC = 5V, RL = 1kΩ	-	2	5	μs
Fall Time	tf	VCC = 5V, RL = 1kΩ	-	2	5	μs
Operating Temperature	TA	Storage and Operation	-40	-	110	°C

Instructions for Using the PC817 Optocoupler:

1. Forward Current (I_F):

   • Ensure that the forward current through the LED does not exceed 50mA continuously.
   • For surge conditions, the peak forward current can be up to 150mA for a duration of 1 second.

2. Reverse Voltage (V_RRM):

   • The reverse voltage across the LED should not exceed 5V.

3. Output Current (I_C):

   • The collector-emitter current should not exceed 50mA continuously.

4. Collector-Emitter Saturation Voltage (V_CE(sat)):

   • When the optocoupler is in saturation, the voltage drop between the collector and emitter should be kept below 0.5V to ensure efficient operation.

5. Current Transfer Ratio (CTR):

   • The CTR ranges from 50% to 200%. This indicates the efficiency of current transfer from the input (LED) to the output (transistor).

6. Rise and Fall Times:

   • The rise and fall times are typically around 2μs but can extend to 5μs under certain conditions. These parameters are important for high-speed applications.

7. Operating Temperature:

   • The device can operate over a wide temperature range from -40°C to 110°C.

8. Mounting and Handling:

   • Handle the device with care to avoid mechanical stress.
   • Ensure proper soldering techniques to prevent thermal damage.

9. Storage:

   • Store the device in a dry and cool environment to prevent moisture damage.

10. Testing:

    • Use appropriate test circuits to verify the performance of the optocoupler, ensuring that all parameters are within the specified limits.

(For reference only)