TM-DSA Modular Connectors Hirose Electric TM-DSA Modular Connectors offer 1 to 4 ports, a board lock mounting style, and SMD and through-hole termination styles. These connectors come in white, black, and gray and feature up to 24 positions. Hirose Electric TM-DSA Modular Connectors feature 0.5A rated current, gold contact plating, 125VAC rated voltage, and -25°C to +60°C operating temperature range.