Did a BT135 SCR exist?

[pimpom]

I live in a remote place where it's often impractical to try to
get the exact part I want, either for replacement or for a new
project, and that was even more so 15-20 years ago when I was
still actively involved in repair work. The only practical option
was to stock a popular device that can substitute for a wide
range of types in its class - BU508A for TV HT output, BC547B and
2SC1815 for low-power low-frequency amp, and so on.

I clearly recall keeping several BT135 SCRs (and BT136 triacs) -
or so I thought. Something made me think about it today and I
searched for a datasheet in an idle moment, but all of the
half-dozen sites I regularly use turned up blanks. Even a Google
search for BT135 didn't find anything. It's as if such a device
never existed. Is my memory playing tricks on me?

 

[Jamie]

I live in a remote place where it's often impractical to try to
get the exact part I want, either for replacement or for a new
project, and that was even more so 15-20 years ago when I was
still actively involved in repair work. The only practical option
was to stock a popular device that can substitute for a wide
range of types in its class - BU508A for TV HT output, BC547B and
2SC1815 for low-power low-frequency amp, and so on.

I clearly recall keeping several BT135 SCRs (and BT136 triacs) -
or so I thought. Something made me think about it today and I
searched for a datasheet in an idle moment, but all of the
half-dozen sites I regularly use turned up blanks. Even a Google
search for BT135 didn't find anything. It's as if such a device
never existed. Is my memory playing tricks on me?

http://pdf1.alldatasheet.com/datasheet-pdf/view/16751/PHILIPS/BT136.html

 

[pimpom]

http://pdf1.alldatasheet.com/datasheet-pdf/view/16751/PHILIPS/BT136.html

I was looking for a BT135 datasheet, not the BT136.

 

[Phil Allison]

"pimpom"

I was looking for a BT135 datasheet, not the BT136.

** The BT134 is a "sensitive gate" triac and so is the BT136.

What are the odds the now LONG obsolete BT135 was one too ?



...... Phil

 

[pimpom]

"pimpom"


** The BT134 is a "sensitive gate" triac and so is the BT136.

What are the odds the now LONG obsolete BT135 was one too ?

If memory serves me right, the BT135 was an SCR. In any case, I
searched for a BT135, not for a BT135 SCR specifically. No
problem wth the BT134, 136,137 etc. The search was mainly out of
curiosity, to get a bit more info about something I thought I put
to good use more than once in the past. Even if memory *is*
playing tricks on me, I wonder why they skipped the 135 out of
the BT13x series.

 

[Jamie]

I was looking for a BT135 datasheet, not the BT136.

Yes I know how ever, my old data book over here state's that it is
virtually the same other than voltage ratings which aren't that much
different.

The 136 can be a replacement for the 135

 

[Ross Herbert]

hil Allison wrote:
:> "pimpom"
:>
:>>
:>>> http://pdf1.alldatasheet.com/datasheet-pdf/view/16751/PHILIPS/BT136.html
:>>
:>> I was looking for a BT135 datasheet, not the BT136.
:>
:> ** The BT134 is a "sensitive gate" triac and so is the BT136.
:>
:> What are the odds the now LONG obsolete BT135 was one too ?
:>
:>
:If memory serves me right, the BT135 was an SCR. In any case, I
:searched for a BT135, not for a BT135 SCR specifically. No
roblem wth the BT134, 136,137 etc. The search was mainly out of
:curiosity, to get a bit more info about something I thought I put
:to good use more than once in the past. Even if memory *is*
laying tricks on me, I wonder why they skipped the 135 out of
:the BT13x series.
:


Could it perhaps have been the BT151 series?
http://www.alldatasheet.com/datasheet-pdf/pdf/16801/PHILIPS/BT151.html

 

[pimpom]

Could it perhaps have been the BT151 series?
http://www.alldatasheet.com/datasheet-pdf/pdf/16801/PHILIPS/BT151.html

I don't think so. I remember the BT135 and the BT136 as two
consecutive type numbers in a series, one an SCR and the other a
triac. I even called up two associates of mine and asked them
what they remember, but they're also vague about it.