EI19 electronic transformer bobbin. 4+6 pins EI19 vertical coil bobbin. Bobbin Size=17.8mmX16.3mmX17.5mm. Parallel Distance=11.9mm. Pin Pitch1=3.5mm. Pin Pitch2=2.8mm. DIP transformer bobbin. UL REC:94V-0. We can make new bobbin tooling to meet different requirements.