| Allied Electronics | 71693433 | 1500 | | 1500 | |
 Digi-Key | 10130636 | 1 | 2868 | 1 | 1 @ $2.75, 10 @ $2.62, 25 @ $2.50, 50 @ $2.10, 100 @ $1.80, 250 @ $1.70, 500 @ $1.60 |
 Newark | 90AC5543 | 1500 | | 1500 | 1 @ $1.65, 2000 @ $1.57, 4000 @ $1.46, 8000 @ $1.36, 12000 @ $1.31, 20000 @ $1.29 |
 TME | M-521CT | 1500 | | 1500 | 1500 @ $1.93 |
| Newark | 07AH1999 | 1500 | | 1500 | 500 @ $1.57 |
| Digi-Key | 10130644 | 500 | | 500 | 1 @ $3.62, 10 @ $3.32, 25 @ $3.02, 50 @ $2.54, 100 @ $2.17, 250 @ $2.05, 500 @ $1.93 |
| Digi-Key | 10130628 | 1 | | 1 | 1 @ $3.62, 10 @ $3.32, 25 @ $3.02, 50 @ $2.54, 100 @ $2.17, 250 @ $2.05, 500 @ $1.93 |
| Newark | 34AH1003 | 1 | | 1 | |
 Mouser | 80-M-521CT | 1 | 3381 | 1 | 1 @ $2.75, 10 @ $2.10, 100 @ $1.70, 1000 @ $1.52, 10000 @ $1.35 |
 Newark | 62AK7360 | 1 | | 1 | 1 @ $3.15, 10 @ $2.15, 25 @ $2.12, 50 @ $2.08, 100 @ $2.05, 250 @ $1.94 |
 jotrin.com | JT24-M-521CT | 1 | 2300 | 1 | |