BoardLock™ Connectors Amphenol Sine Systems BoardLock™ Connectors are available in AT, ATHD, ATM, and ATP series options. The BoardLock™ connectors come in flanged or flangeless, 180° straight or 90° right-angle pin-oriented, wire-to-board options. These connector features are combined with the proven reliability of the A Series™ environmentally sealed thermoplastic connection system with maximum current rating of up to 100A. The Sine systems BoardLock connectors offer a compact, durable, low-profile, lightweight design, and are ideal for power or data signal applications. The BoardLock product lines accept A Series components and are compatible with other industry-standard mating connectors. These BoardLock variations offer IP67, IP68, or IP69K protection when mated. Typical applications include power and signal connectivity, data acquisition, HVAC systems, farming implementation, and boating.