LL1532
General Purpose Audio Transformers
LL1532 is small size medium impedance transformers suitable for splitting and other general purpose applications.
LL1532 consists of two coils each with one primary and one secondary winding separated by an electrostatic (Faraday) shield. The two secondary windings are internally connected in series. The core is a high permeability mu-metal core. The LL1532 is magnetically shielded by a mu-metal housing.
The LL1532 can be used with primaries in series for 1:1 or in parallel for 1:2 turns ratio.
| Spacing between pins | Spacing between rows of pins | Weight | Recommended PCB hole diameter |
| 3.81mm (0.15") | 20.32 mm (0.8") | 25 g | 1.5mm |
| Static resistance of each primary : | 70 Ω |
| Static resistance of secondary : | 180 Ω |
| Self resonance point | ~ 200 kHz |
| Distortion (primaries connected in series, source impedance 600Ω) | 0.2％＠ +6dBU, 50 Hz |
| 1％＠ +12dBU, 50 Hz | |
| Frequency response (source 600Ω , load 10kΩ) | 10 Hz ~ 60 kHz ±0.2dB |
| Optimum termination for best square-wave response (source imp. 600Ω) : | 2 kΩ in series with 1.6 nF |
| Isolation between windings/ between windings and shield : | 3 kV / 1.5 kV |
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