SPTD Double-row PCB Terminal Blocks Phoenix Contact SPTD 1.5 Double-row PCB Terminal Blocks conveniently connects two levels with a cross-section of up to 1.5mm² and ferrule. The SPTD series are designed for currents up to 10A as well as voltages up to 200V. The arrangement of the solder pins guarantees a high level of stability when space is restricted on the PCB.