Details

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BUY PC923 https://www.utsource.net/itm/p/12607427.html

Below is the parameter table and instructions for the PC923 Photocoupler:

Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Forward Current	IF	-	50	-	mA	VF = 1.2V
Forward Voltage	VF	1.1	1.25	1.4	V	IF = 20mA
Reverse Voltage	VR	-5	-	-	V	IR = 10渭A
Collector-Emitter Voltage	VCEO	-	70	-	V	IC = 50mA, TA = 25掳C
Collector Current	IC	-	50	-	mA	VCEO = 30V, VCE = 0.4V
CTR (Current Transfer Ratio)	CTR	50	100	200	%	IF = 5mA, IC = 1mA, VCE = 5V
Response Time (Rise)	tr	-	1	-	渭s	VCE = 5V, IF = 5mA, RL = 1k惟, CL = 100pF
Response Time (Fall)	tf	-	1	-	渭s	VCE = 5V, IF = 5mA, RL = 1k惟, CL = 100pF
Storage Temperature	TSTG	-40	-	125	掳C	-
Operating Temperature	TA	-40	-	105	掳C	-

Instructions

1. Forward Current (IF):

   • Ensure that the forward current through the LED does not exceed 50mA to avoid damage.
   • Typical operating current is around 5mA for optimal performance.

2. Forward Voltage (V_F):

   • The forward voltage drop across the LED should be considered when designing the circuit. It typically ranges from 1.1V to 1.4V at 20mA.

3. Reverse Voltage (V_R):

   • The maximum reverse voltage that can be applied to the LED is -5V. Exceeding this value can cause damage.

4. Collector-Emitter Voltage (V_CEO):

   • The maximum collector-emitter voltage is 70V. Ensure that the supply voltage to the transistor side does not exceed this limit.

5. Collector Current (IC):

   • The maximum collector current is 50mA. Ensure that the load connected to the transistor does not draw more than this current.

6. Current Transfer Ratio (CTR):

   • The CTR ranges from 50% to 200%. This parameter is crucial for determining the sensitivity of the photocoupler. A higher CTR means better sensitivity.

7. Response Time:

   • The rise and fall times are both typically 1渭s. This is important for applications requiring fast switching.

8. Temperature Ranges:

   • The storage temperature range is -40掳C to 125掳C, and the operating temperature range is -40掳C to 105掳C. Ensure that the device is used within these limits to avoid damage.

Additional Notes

• Mounting:
  • Use appropriate mounting techniques to ensure good thermal management, especially in high-temperature environments.
• Handling:
  • Handle the device with care to avoid static damage. Use ESD protection measures during handling and assembly.
• Testing:
  • Before finalizing the design, test the photocoupler under actual operating conditions to ensure it meets the required specifications.

This information should help you effectively use the PC923 Photocoupler in your designs.

(For reference only)