Transformer vertical bobbin EI19. 3+4 pins coil bobbin. Bobbin Size=38mmX18.1mmX14.2mm. Parallel Distance=33.9mm. Pin pitch1=4.1mm. Pin pitch2=4.6mm. Nylon material transformer bobbin. DIP transformer bobbin. UL REC:94V-0. We can make new bobbin tooling to meet different requirements.