I am working on a Panasonic cordless phone (dead). On the main circuit
board in the base unit that are all SMD.
The parts that I need are ID'D by SA101 and SA104(I don't know what
an "SA" is). The number on the part is QAJC517 and is black with no other
marks on it.
Thanks

On Wed, 02 Aug 2006 18:00:17 GMT, "Dick" put
finger to keyboard and composed:

I am working on a Panasonic cordless phone (dead). On the main circuit
board in the base unit that are all SMD.
The parts that I need are ID'D by SA101 and SA104(I don't know what
an "SA" is).

Surge Arrestor? Does it have 2 pins?

The number on the part is QAJC517 and is black with no other
marks on it.
Thanks

The "QAJ" looks like a suffix. Are you sure the number is correct?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

The number is correct but it is a surface mount small block with 3 lines on
lettering with two solder pads ,one on each end . the first line has a logo
ST E, the second line QAJ and the third has C517 . If it is a surge
arrestor ,how do I test them? With an Ohm meter ?

Thanks



"Franc Zabkar" wrote in message
...
On Wed, 02 Aug 2006 18:00:17 GMT, "Dick" put
finger to keyboard and composed:

I am working on a Panasonic cordless phone (dead). On the main circuit
board in the base unit that are all SMD.
The parts that I need are ID'D by SA101 and SA104(I don't know what
an "SA" is).

Surge Arrestor? Does it have 2 pins?

The number on the part is QAJC517 and is black with no other
marks on it.
Thanks

The "QAJ" looks like a suffix. Are you sure the number is correct?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

On Wed, 02 Aug 2006 21:59:26 GMT, "Dick" put
finger to keyboard and composed:

The number is correct but it is a surface mount small block with 3 lines on
lettering with two solder pads ,one on each end . the first line has a logo
ST E,

ST = ST Microelectronics ?

the second line QAJ and the third has C517 . If it is a surge
arrestor ,how do I test them? With an Ohm meter ?

I would think that surge arrestors should test open circuit at normal
voltage levels. I suspect such devices would be near the tip and ring
inputs. Are there two other SAs, ie SA102 and SA103? If so, do they
have recognisable part numbers or logos?

If the devices are indeed surge arrestors, then you could probably
remove them for troubleshooting purposes.

Thanks



"Franc Zabkar" wrote in message
.. .
On Wed, 02 Aug 2006 18:00:17 GMT, "Dick" put
finger to keyboard and composed:

I am working on a Panasonic cordless phone (dead). On the main circuit
board in the base unit that are all SMD.
The parts that I need are ID'D by SA101 and SA104(I don't know what
an "SA" is).

Surge Arrestor? Does it have 2 pins?

The number on the part is QAJC517 and is black with no other
marks on it.
Thanks

The "QAJ" looks like a suffix. Are you sure the number is correct?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

I couldn't find SA102 or SA103,I did find a blank spot that was marked SA102
on the circuit board.
I removed SA101 and it tested open with my ohm meter,then I removed SA104
and it tested
short and that looks like it comes off of the power supply input. I don't
know what is right . I couldn't tell where SA101 was off from as I couldn't
follow the trace because it is on both sides of the board and had been
coated .
Is there any place a person could look up the ID numbers and find out just
what these components are ?
I went to ST's web site and I couldn't even find the number's there.
Used to be you could cross numbers from RCA,NTE.ECG books and find just
about anything
about semi conductors, but that was years ago.
I do believe someone out there has a book , but I am having trouble finding
that someone.

Thanks


"Franc Zabkar" wrote in message
...
On Wed, 02 Aug 2006 21:59:26 GMT, "Dick" put
finger to keyboard and composed:

The number is correct but it is a surface mount small block with 3 lines
on
lettering with two solder pads ,one on each end . the first line has a
logo
ST E,

ST = ST Microelectronics ?

the second line QAJ and the third has C517 . If it is a surge
arrestor ,how do I test them? With an Ohm meter ?

I would think that surge arrestors should test open circuit at normal
voltage levels. I suspect such devices would be near the tip and ring
inputs. Are there two other SAs, ie SA102 and SA103? If so, do they
have recognisable part numbers or logos?

If the devices are indeed surge arrestors, then you could probably
remove them for troubleshooting purposes.

Thanks



"Franc Zabkar" wrote in message
. ..
On Wed, 02 Aug 2006 18:00:17 GMT, "Dick" put
finger to keyboard and composed:

I am working on a Panasonic cordless phone (dead). On the main circuit
board in the base unit that are all SMD.
The parts that I need are ID'D by SA101 and SA104(I don't know what
an "SA" is).

Surge Arrestor? Does it have 2 pins?

The number on the part is QAJC517 and is black with no other
marks on it.
Thanks

The "QAJ" looks like a suffix. Are you sure the number is correct?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

On Thu, 03 Aug 2006 17:23:58 GMT, "Dick" put
finger to keyboard and composed:

I couldn't find SA102 or SA103,I did find a blank spot that was marked SA102
on the circuit board.
I removed SA101 and it tested open with my ohm meter,then I removed SA104
and it tested
short and that looks like it comes off of the power supply input. I don't
know what is right . I couldn't tell where SA101 was off from as I couldn't
follow the trace because it is on both sides of the board and had been
coated .
Is there any place a person could look up the ID numbers and find out just
what these components are ?

If the part is an overvoltage protection device, then the part number
sometimes reflects the device's spec. For example, the "51" may
suggest a breakdown voltage of 50V. The "7" may be a physical
dimension or an energy rating. Varistors are usually numbered in this
way.

FWIW, the service manuals for some Panasonic phones refer to Surge
Absorbers, but I don't remember ever encountering an SAxxx circuit
reference.

What is the model of your phone?

I went to ST's web site and I couldn't even find the number's there.
Used to be you could cross numbers from RCA,NTE.ECG books and find just
about anything
about semi conductors, but that was years ago.

NTE Cross Reference Search:
http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm

I do believe someone out there has a book , but I am having trouble finding
that someone.

I have an NTE printed catalogue from 1990-91.

Thanks


"Franc Zabkar" wrote in message
.. .
On Wed, 02 Aug 2006 21:59:26 GMT, "Dick" put
finger to keyboard and composed:

The number is correct but it is a surface mount small block with 3 lines
on
lettering with two solder pads ,one on each end . the first line has a
logo
ST E,

ST = ST Microelectronics ?

the second line QAJ and the third has C517 . If it is a surge
arrestor ,how do I test them? With an Ohm meter ?

I would think that surge arrestors should test open circuit at normal
voltage levels. I suspect such devices would be near the tip and ring
inputs. Are there two other SAs, ie SA102 and SA103? If so, do they
have recognisable part numbers or logos?

If the devices are indeed surge arrestors, then you could probably
remove them for troubleshooting purposes.

Thanks



"Franc Zabkar" wrote in message
...
On Wed, 02 Aug 2006 18:00:17 GMT, "Dick" put
finger to keyboard and composed:

I am working on a Panasonic cordless phone (dead). On the main circuit
board in the base unit that are all SMD.
The parts that I need are ID'D by SA101 and SA104(I don't know what
an "SA" is).

Surge Arrestor? Does it have 2 pins?

The number on the part is QAJC517 and is black with no other
marks on it.
Thanks

The "QAJ" looks like a suffix. Are you sure the number is correct?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

Model of the phone is KX-TG5431 and is less than a year old,also the FCCID
is: ACJ96NKX-TG5438.
I have tried NTE online cross without success and like I said I went to ST's
web site without any results.
Thanks for your help and I will keep trying .
"Franc Zabkar" wrote in message
...
On Thu, 03 Aug 2006 17:23:58 GMT, "Dick" put
finger to keyboard and composed:

I couldn't find SA102 or SA103,I did find a blank spot that was marked
SA102
on the circuit board.
I removed SA101 and it tested open with my ohm meter,then I removed SA104
and it tested
short and that looks like it comes off of the power supply input. I don't
know what is right . I couldn't tell where SA101 was off from as I
couldn't
follow the trace because it is on both sides of the board and had been
coated .
Is there any place a person could look up the ID numbers and find out just
what these components are ?

If the part is an overvoltage protection device, then the part number
sometimes reflects the device's spec. For example, the "51" may
suggest a breakdown voltage of 50V. The "7" may be a physical
dimension or an energy rating. Varistors are usually numbered in this
way.

FWIW, the service manuals for some Panasonic phones refer to Surge
Absorbers, but I don't remember ever encountering an SAxxx circuit
reference.

What is the model of your phone?

I went to ST's web site and I couldn't even find the number's there.
Used to be you could cross numbers from RCA,NTE.ECG books and find just
about anything
about semi conductors, but that was years ago.

NTE Cross Reference Search:
http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm

I do believe someone out there has a book , but I am having trouble
finding
that someone.

I have an NTE printed catalogue from 1990-91.

Thanks


"Franc Zabkar" wrote in message
. ..
On Wed, 02 Aug 2006 21:59:26 GMT, "Dick" put
finger to keyboard and composed:

The number is correct but it is a surface mount small block with 3 lines
on
lettering with two solder pads ,one on each end . the first line has a
logo
ST E,

ST = ST Microelectronics ?

the second line QAJ and the third has C517 . If it is a surge
arrestor ,how do I test them? With an Ohm meter ?

I would think that surge arrestors should test open circuit at normal
voltage levels. I suspect such devices would be near the tip and ring
inputs. Are there two other SAs, ie SA102 and SA103? If so, do they
have recognisable part numbers or logos?

If the devices are indeed surge arrestors, then you could probably
remove them for troubleshooting purposes.

Thanks



"Franc Zabkar" wrote in message
m...
On Wed, 02 Aug 2006 18:00:17 GMT, "Dick" put
finger to keyboard and composed:

I am working on a Panasonic cordless phone (dead). On the main
circuit
board in the base unit that are all SMD.
The parts that I need are ID'D by SA101 and SA104(I don't know what
an "SA" is).

Surge Arrestor? Does it have 2 pins?

The number on the part is QAJC517 and is black with no other
marks on it.
Thanks

The "QAJ" looks like a suffix. Are you sure the number is correct?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

"Dick" wrote in message
news:HFLAg.16$AF1.8@trndny03...
Model of the phone is KX-TG5431 and is less than a year old,also the FCCID
is: ACJ96NKX-TG5438.
I have tried NTE online cross without success and like I said I went to
ST's web site without any results.
Thanks for your help and I will keep trying .
"Franc Zabkar" wrote in message
...
On Thu, 03 Aug 2006 17:23:58 GMT, "Dick" put
finger to keyboard and composed:

I couldn't find SA102 or SA103,I did find a blank spot that was marked
SA102
on the circuit board.
I removed SA101 and it tested open with my ohm meter,then I removed SA104
and it tested
short and that looks like it comes off of the power supply input. I don't
know what is right . I couldn't tell where SA101 was off from as I
couldn't
follow the trace because it is on both sides of the board and had been
coated .
Is there any place a person could look up the ID numbers and find out
just
what these components are ?

If the part is an overvoltage protection device, then the part number
sometimes reflects the device's spec. For example, the "51" may
suggest a breakdown voltage of 50V. The "7" may be a physical
dimension or an energy rating. Varistors are usually numbered in this
way.

FWIW, the service manuals for some Panasonic phones refer to Surge
Absorbers, but I don't remember ever encountering an SAxxx circuit
reference.

What is the model of your phone?

I went to ST's web site and I couldn't even find the number's there.
Used to be you could cross numbers from RCA,NTE.ECG books and find just
about anything
about semi conductors, but that was years ago.

NTE Cross Reference Search:
http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm

I do believe someone out there has a book , but I am having trouble
finding
that someone.

I have an NTE printed catalogue from 1990-91.

Thanks


"Franc Zabkar" wrote in message
...
On Wed, 02 Aug 2006 21:59:26 GMT, "Dick" put
finger to keyboard and composed:

The number is correct but it is a surface mount small block with 3
lines
on
lettering with two solder pads ,one on each end . the first line has a
logo
ST E,

ST = ST Microelectronics ?

the second line QAJ and the third has C517 . If it is a surge
arrestor ,how do I test them? With an Ohm meter ?

I would think that surge arrestors should test open circuit at normal
voltage levels. I suspect such devices would be near the tip and ring
inputs. Are there two other SAs, ie SA102 and SA103? If so, do they
have recognisable part numbers or logos?

If the devices are indeed surge arrestors, then you could probably
remove them for troubleshooting purposes.

Thanks



"Franc Zabkar" wrote in message
om...
On Wed, 02 Aug 2006 18:00:17 GMT, "Dick" put
finger to keyboard and composed:

I am working on a Panasonic cordless phone (dead). On the main
circuit
board in the base unit that are all SMD.
The parts that I need are ID'D by SA101 and SA104(I don't know what
an "SA" is).

Surge Arrestor? Does it have 2 pins?

The number on the part is QAJC517 and is black with no other
marks on it.
Thanks

The "QAJ" looks like a suffix. Are you sure the number is correct?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.



I have just looked through my Panasonic phone equipment manuals, and all
employ devices designated " SAxxx ". On all of them, the parts list shows "
varistor ( surge arrester ) ", so Franc is definitely right that this is
what they are. This being the case, I would expect them to read open circuit
on a normal multimeter. Looking on the schematics, these devices are
connected across the line connections to protect against surges caused by
near-hit lightning, inducing big spikes in the service provider's lines. If
this is the case, then they need to be rated well beyond the peak ring
voltage that the phone will encounter. I would think that they could be
readily replaced with similar devices from any phone, or even from a scrap
dialup modem board. My friend who builds computers for a living, has these
boards coming out of his ears these days.

Arfa