alternertiv to CTF1389-A ?

[ross2]

Is there anyone who can help with a data sheet on the following component CTF1389-A since I am in search of a alternertiv component.

regards
ross

 

[vtech]

If I remember correctly, CTF1389/CTF1389-A was Pioneer's part number for a small coil used mainly in various Pioneer audio products. I do not know the value but it is usually used in line with VCC &/or Data/reset lines to any number of processors used in the unit.--more likely as a filter and not very critical to the operation if jumpered.

 

[ross2]

That's right, it's a COIL / Inductor sitting in my pioneer car radio in the connection with aux input, but I'm missing a value?

Greetings
ross

 

[ronsimpson]

Looks like audio in. The coil is on the ground lead and on the audio lines.
It will work to short out the coil. I assume you broke the coil. Just short it out with a piece of wire.

 

[Nigel Goodwin]

Looks like audio in. The coil is on the ground lead and on the audio lines.
It will work to short out the coil. I assume you broke the coil. Just short it out with a piece of wire.

Actually video in

But as you say, just short it out - it will make no difference.

 

[Ian Rogers]

Actually... Your both right... The schematic has one on all three AUX pins....

 

[ross2]

Thanks for the many replys

My question was not how I repaired my radio.
But the value of CTF1839-A?

regards
ross

 

[vtech]

Ross,

Not sure why you want to know the value if the unit does not have any problem? As it has been mentioned by several posters, it is NOT a critical part.
When I used to deal with consumer electronics, I saw the specific coil used on many Pioneer audio products and the main purpose is to act as a filter without any operational effect if jumpered.
Short of taking one out and measuring the value, you can use the XL=2∏fL formula to guesstimate what the value should be; the idea is to provide a block to undesireable noise(if any) while allowing your actual signal to go through---and don't forget the current draw if you are using it with power supply line.

 

[Nigel Goodwin]

Thanks for the many replys

My question was not how I repaired my radio.
But the value of CTF1839-A?

As it's not specified, then the only way would be to measure a good one - but as we've all pointed out there's no reason or need for it anyway.

 

[ross2]

Thanks for the many answers

I will find measuring gear and get it measured.

regards
ross

 

[Nigel Goodwin]

Thanks for the many answers

I will find measuring gear and get it measured.

But why?, what are you hoping to achieve?.