| Hawk Electronics | CDL4U(I.S)/W | 100 | | 100 | 100 @ $1.51, 200 @ $1.48, 400 @ $1.45, 1000 @ $1.39, 2500 @ $1.37, 5000 @ $1.35 |
 Galco | CDL4U(I.S)/W-ALTH | 1 | | 1 | 1 @ $1.68 |
| Allied Electronics | 71224442 | 100 | | 100 | |
| Digi-Key | 9447687 | 1 | | 1 | |
 Onlinecomponents.com | CDL4U(I.S)/W | 1 | 77 | 1 | 1 @ $2.49, 25 @ $2.04, 50 @ $1.65, 100 @ $1.58, 250 @ $1.51, 500 @ $1.47, 1000 @ $1.44 |
 EE-USA.com | CDL4U(I.S)/W | | 350 | | |
| Onlinecomponents.com | CDL4UISW | 1 | 77 | | 1 @ $1.98, 25 @ $1.82, 100 @ $1.68, 200 @ $1.56, 250 @ $1.45, 500 @ $1.40 |
| Master Electronics | CDL4UISW | | 67 | | 1 @ $1.98, 25 @ $1.82, 100 @ $1.68, 200 @ $1.56, 250 @ $1.45, 500 @ $1.40 |
| Electro Sonic | CDL4UISW | 1 | 77 | | 1 @ $2.10, 25 @ $1.93, 100 @ $1.78, 200 @ $1.65, 250 @ $1.54, 500 @ $1.48 |