What are the Alternative Parts for L14F1,LD271 & S20102

[Green Light]

What are the Alternative Parts for

Transistor (L14F1)
Diode (LD271)
IC (S20102)

While I was surfing the net in the hope of finding a Solution to this, I found a Thread Regarding the same in this Site, It was Very Helpful, But not mention the part name (code) wise, I am a newbie to Electronics/Electrical Systems and only have a slight Knowledge of them,I went about obtaining these pieces for many shops but no-one had them,Even shop keepers were not kind enough to provide an alternative.

I am making this Circuit for a Collage Project and must Submit by the Next Week.

The Circuit I am going to make

http://www.electroschematics.com/6161/power-switch-with-infrared-proximity-sensor/

The Old Thread I found on this website

https://www.physicsforums.com/showthread.php?t=476884

Please Help Me,Thanks in Advance

 

[mjhilger]

What do you think those parts are doing in the circuit? How critical is it that you find the exact match? Have you considered finding replacement parts that are similar? The IC is a photo isolated (I believe 4 quadrant) thyristor, do you understand its function?

 

[mjhilger]

Wow, after looking at the old thread, what questions do you have? It seems to have answered what you can use.

 

[Green Light]

What do you think those parts are doing in the circuit? How critical is it that you find the exact match? Have you considered finding replacement parts that are similar? The IC is a photo isolated (I believe 4 quadrant) thyristor, do you understand its function?

Thank you very much for you Comment :) Only a rough idea :(

Wow, after looking at the old thread, what questions do you have? It seems to have answered what you can use.

I want to know whether I can use any solid state (230 V) relay instead of this Sharp one
Also can I use any IR Diode that can be found in the Local Market
Also what is an ideal Transistor instead of (L14F1)

 

[alphy]

I understand the importance of finding suitable alternatives for electronic components that may be difficult to obtain. In the case of L14F1, LD271, and S20102, there are several alternative parts that can be used in their place.

For the transistor (L14F1), some possible alternatives are the 2N2222, 2N3904, or BC547. These are all commonly used NPN transistors and should work well in the circuit you are making.

For the diode (LD271), you could try using a 1N4148 or 1N4001 diode. These are both general purpose diodes and should function similarly to the LD271 in your circuit.

For the IC (S20102), there are a few different options depending on the specific function of the IC in your circuit. If it is being used as a voltage regulator, you could try using an LM7805 or LM7812. If it is being used as a timer or oscillator, you could try using a 555 timer IC. If you need a specific function that is not covered by these alternatives, I would recommend consulting a datasheet for the S20102 to find a suitable replacement.

It is important to note that while these alternatives may work in your circuit, they may not have the exact same specifications as the original components. It is always best to consult a datasheet and do some testing to ensure the alternative part will work properly in your circuit.

I hope this helps in finding suitable alternatives for L14F1, LD271, and S20102 for your project. Good luck!