The SPT103 from Vanguard Electronics is a Space Qualified Power Transformer with an inductance of 70 µH. This transformer has a turns ratio of 1CT:1CT and requires a primary voltage of 2.5 V. It has a primary/secondary direct current resistance of 0.25 ohms and an insulation resistance of 10K Mohms. The transformer features tin-lead terminations and welded internal connections. It has a minimum dielectric withstanding voltage of 500 VAC, interwinding capacitance of 18 pF, and low leakage inductance of 150 nH. The SPT103 is MIL-STD-981 compliant and measures 0.25 × 0.25 × 0.2 inches.
