Overview

The B03B-XASK-1-A(LF)(SN) from JST Sales America Inc. is a wire-to-board rectangular connector, typically part of JST’s XASK/XA series. It is a 3-position connector designed to mate a cable harness to a PCB, providing a compact and reliable interconnect in low-voltage signal and power applications. As a lead-free (LF) and tin-plated (SN) version, it complies with modern environmental and RoHS requirements. These connectors are commonly used where secure mating, polarized alignment, and good vibration resistance are needed, such as in consumer electronics, industrial control boards, and automotive subassemblies.

Applications

• Signal and low-power connections between PCBs and wiring harnesses in consumer electronics
• Industrial control units, PLC I/O boards, and sensor interface modules
• Automotive dashboards, interior modules, and auxiliary harness connections
• Home appliances such as HVAC controllers, washing machines, and refrigerators
• Office equipment, printers, and scanners requiring compact board-to-cable links
• Embedded systems and development boards needing removable wire connections

Alternatives & Replacement

Depending on availability, lifecycle status, or evolving design requirements, it may be necessary to consider alternative connectors to the B03B-XASK-1-A(LF)(SN). When selecting a replacement, engineers typically look for the same series or a mechanically and electrically equivalent connector that maintains the same pitch, number of positions, and mounting style.

Recommended alternatives:

• B03B-XASK-1-A(LF)(SN) – Same part number within the series (exact catalog match; verify detailed specs)

Always confirm compatibility by reviewing the manufacturer’s datasheet, paying particular attention to pinout, pitch, current and voltage ratings, operating temperature range, and the mechanical mating interface with existing housings or headers. A footprint and harness check in the actual PCB and enclosure design is strongly recommended before committing to a substitute part.