The LL1578 and the LL1578XL are high performance microphone input transformers/line-box transformers with high permeability mu-metal cores and high bandwidth coils. The LL1578 and the LL1578XL use the same pin-out as our well known microphone transformer LL1538.
Turns ratio 1 + 1 : 10
Weight: 65 g
Spacing between pins 5.08 mm (0.2")
Spacing between rows of pins 27.94 mm (1.1")
Recommended PCB hole diameter 1.5 mm
Isolation between windings / between windings and shield 4 kV / 2 kV
Dimensions Max. Length x Width x Height above PCB (mm) 38 x 24 x 20.5
Static Resistance of each primary: 15 ohms Static Resistance of secondary: 960 ohms
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