ETD/ER/EC49 transformer bobbin. 10+10 pin horizontal ETD49 bobbin factory. Bobbin Size=56.0mmX54.4mmX35.35mm. Pin pitch=5.08mm. Parallel Distance=40.64mm. ETD49 high frequency transformer widely used in PCB circuits, filters, fax machines, computers, UPS, monitor, scanners, mobile adapters and other equipments.