A 3.5 mm mono jack socket is utilised in a wide range of applications involving audio, guitar, and data ports. It is usually available in a choice of panel mount or printed circuit board (PCB) mount versions. The panel mount versions will have an eyelet in its terminals for soldering a wire into, and will not work for through-hole PCB applications. Many jack sockets also have a built in switch, which disconnects a pair of contacts when inserting the jack.
I needed a 3.5 mm mono jack socket such as the Cliff CL1384, however, I had a tough time getting it because the suppliers that stocked them wanted five pounds just for posting one socket, which is unrealistic for a 20 pence socket.
Recycled components such as sockets are fine, just remove the excess solder from the terminals and a little cleaning and they are good to go. Recycling is something everyone should do more.
This particular socket is a panel mount version, and the terminals have eyelets. If you wish to mount these on a PCB then you are going to need bigger holes. These old ones tend to be very robust than the newer PCB mount ones hence I will be using these for my electronics projects and prototypes in the future.
CL1384 Type A
For the Sinclair ZX80 project, the ideal socket was the “type A” CL1384 as the terminals are for PCB mounting. This is a S6/BB PC switched 3.5 mm jack socket for right angle PCB mounting. The type A, also known as CL1385, is without nuts. The CL13829 is the gold version of the same socket. The following numbers are for type A that are compatible: CL1372, CL13735, CL13841, CL13842, CL1389, CL1391, and FCR1281.
There are a very small number of outlets for these sockets and the sellers have hiked-up the prices to unrealistic levels, hence I decided to look for an alternative for my project.
In the end, I found the 3F07 audio jack socket on eBay. I got a bag of 10 sockets for just two pounds including postage and they came all the way from China. They fit onto the PCB in place of the old sockets and work very well after a slight modification. Moreover, these stereo ones work far better as there are two sets of contacts providing greater reliability. I will be using these everywhere on my online electronics projects.