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 Unusual resistors, single ended, likely to be mounted vertical on circuit boards
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 Return to top of page · Post #: 1 · Written at 11:58:24 AM on 27 June 2019.
Wa2ise's avatar
 Location: Oradell, US
 Member since 2 April 2010
 Member #: 643
 Postcount: 757

I obtained these and more like them back around 1977 from a surplus shop outside Boston MA USA. They look like the sort you find in Japanese transistor radios, except these have both leads at one end. Usually, to mount an ordinary resistor vertically, you have to fold over one of the leads to run parallel to the resistor body to get back to the circuit board. The pictured resistors look to be a reasonable answer to this, don't know why these didn't become an industry standard. These resistors look to be made using ceramic tubes with resistive material on the outside (under the paint), and one of the leads passing through the tube center and terminating at the top, and the other lead terminated at the bottom dogbone resistor style as usual.

 Return to top of page · Post #: 2 · Written at 12:28:47 PM on 27 June 2019.
GTC's avatar
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5733

Interesting. Have never come across those before.

 Return to top of page · Post #: 3 · Written at 4:23:21 PM on 27 June 2019.
Brad's avatar
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6056

Never seen one myself but a good idea, especially where miniaturisation is the order of the day.

A valve a day keeps the transistor away...

 Return to top of page · Post #: 4 · Written at 10:38:12 AM on 28 June 2019.
Irext's avatar
 Location: Werribee South, VIC
 Member since 30 September 2016
 Member #: 1981
 Postcount: 343

I remember seeing those in Japanese consumer devices back in the seventies.
I guess SMD put and end to all those different styles of passive components.

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