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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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8th Oct 2022, 9:23 pm | #1 |
Diode
Join Date: May 2018
Location: Friskney, Lincolnshire, UK
Posts: 3
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Thermistor 1A-1
Evening,
I've been hunting the web but cant seem to find any thermistor 1A-1, or what its value is. Anyone happen to know what the actual thermistor values / type is? then i can see if I can see if I can get some from Farnell or RS etc Many Thanks |
9th Oct 2022, 8:00 am | #2 |
Heptode
Join Date: Jan 2008
Location: Hakadal, Norway
Posts: 640
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Re: Thermistor 1A-1
Many of us would like to get that information
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9th Oct 2022, 12:43 pm | #3 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Thermistor 1A-1
According to a post in the link below it's 200k (+-20%) cold and 500 Ohms at 100mW dissipation:
https://groups.google.com/g/uk.d-i-y/c/pqEXU2RQmnA Lawrence. |
9th Oct 2022, 1:50 pm | #4 |
Pentode
Join Date: Jan 2019
Location: Manchester, UK.
Posts: 159
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Re: Thermistor 1A-1
I might have a few, PM if interested, Pip
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9th Oct 2022, 4:05 pm | #5 |
Nonode
Join Date: Jun 2010
Location: Spalding, Peterborough, Cambridgeshire, UK.
Posts: 2,851
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Re: Thermistor 1A-1
I have bag with some in, marked with a BT part number. I remember they were very high resistance at 20C.
Will try and find them and report back. Not sure if I offered them with my R53, RA53 etc a few months ago. But think all those threads have now gone. Rob
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9th Oct 2022, 4:49 pm | #6 |
Pentode
Join Date: Jan 2019
Location: Manchester, UK.
Posts: 159
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Re: Thermistor 1A-1
I found some of my Thermistors 1A-1 - now been sent to eBay since I went to the bother to search them out, so Rob may be a better bet!
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9th Oct 2022, 8:02 pm | #7 |
Diode
Join Date: May 2018
Location: Friskney, Lincolnshire, UK
Posts: 3
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Re: Thermistor 1A-1
Thank you for the replies. I'll have a look and see if anything is similar to the one mentioned can be got from electronic suppliers.
I potentially only need one, although I'm beginning to think it is a slight fault with the dial, that causes the bell to tinkle while dialling. none of my others do. Cheers Dan |
10th Oct 2022, 5:08 pm | #8 |
Nonode
Join Date: Jun 2010
Location: Spalding, Peterborough, Cambridgeshire, UK.
Posts: 2,851
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Re: Thermistor 1A-1
Found them, number is 1A, not 1A-1. Whether mine are first issue, non encapsulated. The 420700 is I believe the stores item number.
Pm me with your address and I can post. Rob
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Apprehension creeping like a tube train up your spine - Cymbaline. Film More soundtrack - Pink Floyd |