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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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21st Aug 2007, 10:45 pm | #1 |
Retired Dormant Member
Join Date: Jun 2007
Location: Fenwick, Kilmarnock - Ayrshire
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AF127 and AF127N
Looking for some help on the difference between an AF127 and an AF127N transistor. I have looked on the web but could not find a datasheet on either. I am wondering if the N suffix is likely to preclude its use to replace a standard AF117/AF127.
Any help appreciated with info including pin outs. Thanks, Mike |
22nd Aug 2007, 12:35 am | #2 |
Retired Dormant Member
Join Date: Apr 2003
Location: Blackpool, Lancashire, UK.
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Re: AF127 and AF127N
I've just had a quick look around the web and all I can determine is that the N suffix seems to denote a specific manufacturer. Have a look at this German site where it seems any transistor with the N suffix comes from a manufacturer coded 'SI'.
I wouldn't think it's quite that simple though, so I'll see what I can find out later if nobody else offers any further info in the meantime. |
22nd Aug 2007, 8:31 am | #3 |
Rest in Peace
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Location: N.W. Oxfordshire(Chipping Norton)
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Re: AF127 and AF127N
'SI' = Siemens(the manufacturer in question), and, so far as I know, the AF127N should be a suitable substitute for othe AF127 variants, for AF117, and for the earlier OC170.
Connections shouled, however be checked, as I have come accross AF127s with non-standars pin-outs. |
22nd Aug 2007, 9:52 am | #4 |
Retired Dormant Member
Join Date: May 2007
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Re: AF127 and AF127N
I've just checked in my old transistor "Bible" (Towers) and AF127N isn't listed. So I'd go with everyone else and agree it's a standard AF127 with a manufacturer's identifying suffix. Should there have been any differences I'd assume Towers would list as such.
Pete |
22nd Aug 2007, 11:02 am | #5 |
Pentode
Join Date: Apr 2007
Location: Somerset UK
Posts: 155
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Re: AF127 and AF127N
My Towers lists an AF117 and an AF117N, the same transistor in a different package.
Only one AF 127 is listed however. Older versions of Ball have the AF117 at 75 mW, the AF127 at 67 mW, Towers has 75 mW for both Vcb= -20 (Ball, Mullard) -32 (Towers) Vce= -15 Icmax= 10mA (both) 2n equivalents AF117 = 2N990 AF127= 2N990 |
24th Aug 2007, 9:07 am | #6 |
Retired Dormant Member
Join Date: Jun 2007
Location: Fenwick, Kilmarnock - Ayrshire
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Re: AF127 and AF127N
Thanks to all who replied - very much appreciated. I think I'll use the AF127N and see how it goes. I'll report back if any problems noted.
Thanks, Mike |
24th Aug 2007, 11:11 am | #7 |
Heptode
Join Date: Nov 2004
Location: Ripon, N.Yorkshire, UK.
Posts: 782
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Re: AF127 and AF127N
N was often used as a suffix for military standard transistors,
Jim |