Hammond 560E 50/200:150/600 Ohm Mic-to-Line Broadcast Transformer

The 560E is a broadcast quality, epoxy potted PCB transformer that matches a 50/200 ohm primary to a 150/600 ohm secondary. Like the 560C it is listed for emitter or microphone to line applications, but its higher primary impedance suits 50 and 200 ohm sources feeding 150 or 600 ohm lines in studio and broadcast equipment.

The 560 Series is built in a rugged black epoxy potted case with 9 pin connections (.025" square by 0.5" long) for P.C. board mounting. An electrostatic shield between primary and secondary is connected to the core and brought out to pin "SH", the construction is humbucking, and balanced split windings on both primary and secondary add circuit versatility; primaries and secondaries can also be reversed for impedance matching. Insertion loss is 1 dB maximum, and higher signal levels are possible with reduced low frequency performance.

Output power is 0 dbm over 30 Hz to 30 kHz, typically +/- 0.5 dB at +0 dbm and +/- 1.0 dB at +10 and +27 dbm with no D.C. saturation. Typical drawing values are 2.36 ohm primary DCR (1-4), 14.10 ohm secondary DCR (5-8), 0.305 H primary and 0.824 H secondary inductance, 0.212 mH leakage inductance, and 3.302 K / 9.153 K ohm primary and secondary impedance at 1 kHz. The drawing lists a 1.736:1 turns ratio, 500 Vrms dielectric strength and a -40 to 105°C range.

Overall dimensions are 1.64" (41.7 mm) x 1.33" (33.8 mm) x 0.85" (21.6 mm) high max for the series, with the 560E drawing showing 0.80" high. Shipping weight is 0.25 lbs (0.11 kg). Made in Canada; RoHS and REACH compliant, UPC 623980279404.