| Leaded |
 HDSL2 Transformers - 1CT :
2.3CTS |
| H28161-A
for Level One SK70740/-41/-42 |
| H28159-A
for Level One SK70740/-41/-42 |
| . |
| HDSL2 Transformers - 1CT : 2CTS |
| H27649-B
for Level One SK70740/-41/-42 |
| H27650-A
for Level One SK70740/-41/-42 |
| . |
| HDSL Transformers |
| HD6790/91
for Brooktree BT8921 chip |
| HD6788/89
for Brooktree BT8952 chip |
| HD6792/93
for Level One SK70704 chip |
