Precision Ic sockets - Page 1
Forum section: electronics / general

author: mustafayilmaz
author_rank: Contributor
timestamp: December 20, 2024, 11:47:37 am
content: Hello, I was using delicate connectors as integrated sockets. The connectors I bought from a local seller are loose. They are probably made in China. The circuit works but the integrated circuit comes off very easily by hand.Is this due to the quality of the material or is there something else I don't know? Some say that these sockets are not compatible with integrated circuits. I don't think this is true.[ Specified attachment is not available ]

author: Kean
author_rank: Unknown
timestamp: December 20, 2024, 12:21:57 pm
content: The item in the picture are normally called "Machined Pin Socket Strip"There are several different versions of these, in particular- for small pins as typical formed IC pins or round pins approx 0.4-0.6 mm (0.015-0.25 in) dia. (similar to a machined pin IC socket, but in SIP form)- for square 0.635 mm (0.025 in) pins, or 0.635-0.85 mm dia.Examples from Fischerhttps://www.fischerelektronik.de/- small pins MK 01 series- large pins BL 5 seriesThe also come in pin pitches other than 2.54 mm (0.1 in), such as 2.0mm which I commonly use.

author: jpanhalt
author_rank: Super Contributor
timestamp: December 20, 2024, 01:10:33 pm
content: I use machined pin sockets too, but recently had a problem with a 28-pin MCU with standard DIP (2.54 mm) spacing. An alternative is Textool from 3M. They are designed for smaller pitches, but are expensive:https://www.3m.com/3M/en_US/p/c/electronics-components/interconnect-products/breadboards-test-clips/test-burn-in-sockets/Copies are readily available and cheaper.

author: David Hess
author_rank: Super Contributor
timestamp: December 20, 2024, 04:46:41 pm
content: Quote from: mustafayilmaz on December 20, 2024, 11:47:37 amThat seems like a problem with that particular socket brand. Usually machined pin collet sockets are considered "high reliability" for ICs and other parts and work very well.

author: thm_w
author_rank: Super Contributor
timestamp: December 20, 2024, 09:35:48 pm
content: I have machined pin DIP IC sockets, from major brand, and some ICs with thin flimsy leads won't fit solidly in them.You can't really blame one or the other as being at fault.If you want consistent force, probably the cheap leaf spring type holders will handle a wider range of tolerance.https://www.pishop.ca/product/ic-socket-for-8-pin-0-3-chips-pack-of-3/

author: mustafayilmaz
author_rank: Contributor
timestamp: December 21, 2024, 08:11:09 pm
content: I found Connfly brand products at affordable prices in a company. Has anyone used them? Or should I look for higher quality brands?Is this product suitable for integrated circuits? Can you explain why these sockets are called machine pins?https://cdn.ozdisan.com/ETicaret_Dosya/349077_494052348..pdf

author: Kean
author_rank: Unknown
timestamp: December 23, 2024, 07:07:50 am
content: Quote from: mustafayilmaz on December 21, 2024, 08:11:09 pmThat datasheet specifies "0.381-0.635" mm diameter, so they should be suitable for smaller pins in a somewhat wide range. I'm not sure why you were having problems with your original ones, unless they were the style meant for larger pins, or they had been "abused". I don't know of the Connfly brand, and I've personally mainly used Fischer or Preci-Dip brands as I was given a large quantity by a company clearing out old stock.They are called machined-pin sockets as they are presumably made on a machine like a lathe (I am not sure the exact process for mass production), unlike other IC sockets which use the formed leaf springs, or some pin sockets which are a simple tuning fork style.