Hammond 107H 600 Ohm CT 1:1 Miniature Isolation Transformer

The 107H is a 1:1, 600 ohm centre-tapped to 600 ohm centre-tapped miniature transformer from the 107 Series. With identical windings on pins 1-3 and 4-6 it is well suited to 600 ohm line isolation and line matching, as well as the audio input and output roles the series covers.

Its power level is 150mw from 150 Hz. to 50 Khz. The frequency range extends furthest at low levels: 50 Hz. to 80 Khz. at +0 dbm, 100 Hz. to 80 Khz. at +10 dbm and 150 Hz. to 80 Khz. at +20 dbm, all +/- 1.5db with no D.C. saturation; the frequency response is ±1.5db from 300Hz to 50KHz. Typical DCR is 60 ohms primary (30/30) and 78 ohms secondary (39/39); the table gives 59 and 75 ohms (+/- 20%). Both windings measure 1.21 Hy and 4.90 K ohms at 1.0 kHz, 1.0 V, with 270 mH leakage inductance. Maximum D.C. unbalance is 6 mA and dielectric strength 100 Vrms.

Every 107 Series unit is epoxy potted in an attractive black molded case, and the rugged potting produces a completely sealed part that withstands severe environmental conditions. It will withstand soldering for 10 sec. at 260 degrees C, with a maximum ambient temperature of 85 degrees C; the casting epoxy has a workable range of -40°C to +105°C under a normal rate of change, not including thermal shock. The drawing notes the windings can be used either way round.

It mounts on a PC board with pin-type terminals of min. 0.187" length and is RoHS and REACH compliant, with a shipping weight of 0.02 lbs (0.01 kg).