First-Aid Kits for Circuit Boards^®

A Circuit Technology Center Company
Haverhill, MA 01835 USA
www.circuitmedic.com

Eyelets

Eyelets are used to repair plated holes in circuit boards and also to create a conductive path through circuit boards for various applications. All eyelets are manufactured from copper or brass and have bright tin plating. See guides covering a variety of plated hole repair and rework procedures at www.circuitrework.com/guides/guides.html.

To form and set eyelets by hand, you will need the following tooling:
(2) 115-3120 Setting Tool, Small, (1) 115-3122 Tool Base, (1) 115-3145 Tool Grip

To set eyelets using 110-5202 Eyelet Press, you will need the following tooling:
(2) 115-3120 Setting Tool, Small or (2) 115-3126 Setting Tool, Large

Eyelet Selection Criteria
ID - Inside Diameter	.003" - .020" greater than the component lead diameter.
OD - Outside Diameter	The clearance hole in the circuit board should be .001" - .005" greater than the outside diameter.
LUF - Length Under Flange	The length of the flange should be .020" - .035" greater than the thickness of the circuit board.
FD - Flange Diameter	The flange diameter should be small enough to prevent interference with adjacent pads or circuits.

Eyelet Forming Process
1. Apply firm, even pressure using the flared end of the setting tool to flare the eyelet barrel.	2. Apply firm, even pressure using the flat end of the setting tool to flatten the eyelet barrel.