This product is an ultra compact audio frequency transformer, which is 0.25 cubic inches, for use on the printed circuit board. It is packed in a self-extinguishing plastic case. The pins are plated with gold, and the core is more compact than DL core and their performance is very excellent.
| Mfr. Part No. | Description |
| MX-52 | Unbalance Current, 0.25 |
| MX-58 | Unbalance Current, 1 |
| MX-59 | Unbalance Current, 1 |
| MX-61 | Unbalance Current, 1 |