| Future Electronics | 4016714 | 3.912 | 50 | 10 | | Cornell Dubilier Electronics | | 3.912 @ 50 |
| TTI | SLP221M450E3P3 | 3.99 | 100 | 50 | | Cornell Dubilier | | 3.99 @ 100 |
| Hotenda | H263789 | 4.635 | 1 | 98 | | Cornell Dubilier Electronics | | 4.635 @ 10 |
| Mouser | 598-SLP221M450E3P3 | 5.12 | 1 | 10 | | Cornell Dubilier | | 5.12 @ 10 |
 | Newark | 45X5155 | 7.18 | 1 | 50 | | CORNELL DUBILIER | | 7.18 @ 10 |
 | Digi-Key | 2202760 | 7.5384 | 1 | 5512 | | Cornell Dubilier Electronics (CDE) | | 7.5384 @ 10 |
| us.rs-online.com | 70190223 | 8.0 | 50 | 10 | | Cornell-Dubilier | | 8.0 @ 50 |
 | swatee.com | SLP221M450E3P3 | 8.58 | 1 | 717 | | Cornell Dubilier | | 8.58 @ 10 |
| AmazonTP | B00M1RF1UE | 40.91 | 1 | 10 | 10 | CORNELL DUBILIER | | 40.91 @ 10 |
