Separating THT components from the PCB - metal post thing - Page 1
Forum section: electronics / beginners

author: ElectronicsNewbie
author_rank: Contributor
timestamp: July 28, 2015, 08:04:37 pm
content: Hi guys,This is really silly question. Whats the proper name for this metal post thing that lifts up the power resistor in this case?Thanks for your help!

author: T3sl4co1l
author_rank: Super Contributor
timestamp: July 28, 2015, 11:05:41 pm
content: I thought I had seen them somewhere before... possibly in here,http://www.digikey.com/product-search/en/connectors-interconnects/terminals-pc-pin-single-post-connectors/1442576but good luck digging.Tim

author: Whales
author_rank: Super Contributor
timestamp: July 28, 2015, 11:10:45 pm
content: (Completely tangential)I have a similar resistor permanently branded with a burnt copy of my fingerprint.IthinkI see a circular imprint on the left half of yours. Nice thermal marks in the centre too.

author: ElectronicsNewbie
author_rank: Contributor
timestamp: August 04, 2015, 08:38:47 pm
content: Thanks for your reply guys.I found the pic over the Internet.

author: alsetalokin4017
author_rank: Super Contributor
timestamp: August 05, 2015, 03:35:35 am
content: I'd call it a "standoff"... and I must be right because when I searched Google for "power resistor standoff" your image is the second one on the image page...Actually they look like quick-disconnect pins, PCB-mountable, that have been pressed into service as standoffs.Taking apart old CRT chassis, are we?

author: Whales
author_rank: Super Contributor
timestamp: August 06, 2015, 01:26:51 am
content: Quote from: alsetalokin4017 on August 05, 2015, 03:35:35 amThis was a close as I could get. All of the socket-like pins that I found only had a hole at one end, however.

author: tautech
author_rank: Super Contributor
timestamp: August 06, 2015, 02:35:36 am
content: Quote from: alsetalokin4017 on August 05, 2015, 03:35:35 am+1Maybe even a obscure old day TH PCB test point.Ceramic standoff's are a far better solution and have the advantage of conducting much less heat onto the PCB.IMO metal standoffs were probaly used instead of having to buy ceramics and therefore it's been done on the cheap.

author: andtfoot
author_rank: Unknown
timestamp: August 06, 2015, 04:19:59 am
content: You could also search for hollow PCB turrets. They are usually riveted to the board, but could be repurposed.

author: Whales
author_rank: Super Contributor
timestamp: August 08, 2015, 11:01:14 pm
content: I would have thought heat conduction into the board was desired. The resistors are already high-wattage and stood off by a distance, so presumably any extra cooling is useful. Even if the ceramic standoffs covered most of the legs it would be detrimental.

author: tautech
author_rank: Super Contributor
timestamp: August 08, 2015, 11:35:40 pm
content: Quote from: Whales on August 08, 2015, 11:01:14 pmYes, it can be, and sometimes components are just elevated only enough to clear the PCB and are supported by their own leads with no standoffs. This can be fine for something like a TV where the only physical stresses components will ever see is while in infrequent transport.Other equipment must be more physically robust and hence standoffs are then often used.IME standoffs are more often seen in old equipment with Phenolic PCB's that are more susceptable to elevated temperatures.I have seen quite tall standoffs used with other components below, right on the PCB so standoffs can also be used to help with density/routing paths.Other than power resistors (some with integral pressed metal standoff leads) it is not so common to see hollow standoffs these days with designers more conscious of better efficiencies in modern appliances/equipment and also the more commonly used FR4 having better heat tolerance.

author: Vntrev
author_rank: Newbie
timestamp: April 18, 2023, 08:12:55 am
content: Hello these component standoffs look very old. Here is a link to the new version.https://www.mouser.com/ProductDetail/Keystone-Electronics/1582-2?qs=sRmtjTgUjYXOlBQXe%252Bt9UQ%3D%3D

author: mariush
author_rank: Super Contributor
timestamp: April 18, 2023, 10:03:41 am
content: Good job reviving a thread from 2015, I'm sure OP was still waiting for answers /sAnyway, that's a terminal, not really ideal for use with resistors.If anyone actually still looks, another option may be ceramic spacers ... Digikey has some in another category, here's a link or two:https://www.digikey.com/en/products/detail/essentra-components/CER-1/3811718https://www.digikey.com/en/products/detail/essentra-components/CER-2/3811719https://www.digikey.com/en/products/detail/essentra-components/CER-3/3811720https://www.digikey.com/en/products/detail/essentra-components/CER-4/3811721and more ...https://www.digikey.com/en/products/filter/component-insulators-mounts-spacers/585?s=N4IgTCBcDaIMYFMBOBDAtgSziAugXyA1 and 4 are stocked in big quantities (46k , 98k) as I write this post and they're fairly cheap at 10 cents each at 100+ pcs ordered.

author: donlisms
author_rank: Frequent Contributor
timestamp: April 20, 2023, 12:54:25 am
content: Nah... I'm going with "Post Thingy."