A-BL127DG50-021-GSR2

Overview

The A-BL127DG50-021-GSR2 is a 50-position surface mount receptacle connector from the Assmann WSW AW 127 series. It features a 1.27 mm (0.050 inch) pitch and utilizes gold-plated phosphor bronze contacts for reliable signal transmission. Designed for board-to-board applications, this component supports a maximum current rating of 1A and withstands voltages up to 500V AC. The housing is constructed from PBT material with glass fiber reinforcement, ensuring compliance with UL 94 V-0 flammability standards. It operates within a temperature range of -40°C to +105°C.

Feature Summary

• Surface mount technology enables automated assembly on printed circuit boards.
• Gold-plated contacts provide superior conductivity and corrosion resistance.
• High-density 1.27mm pitch accommodates numerous connections in compact spaces.

Applications

• Board-to-board interconnections in consumer electronics
• Signal transmission in industrial control systems
• Internal connectivity within telecommunications equipment

Procurement Notes

Verify the specific suffix GSR2 against manufacturer documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure the ordering part number matches the required contact plating thickness and housing color variants if applicable. Cross-reference the datasheet for reflow soldering profile recommendations to prevent thermal damage during assembly.

Selection Notes

Select this component when high-density surface mounting is required with a 1.27mm pitch. The gold plating makes it suitable for low-signal applications where contact reliability is critical. Compare against tin-plated alternatives if cost reduction is prioritized over long-term corrosion resistance. Ensure the PCB footprint aligns with the specified mechanical dimensions for proper alignment.

Part Context

This receptacle belongs to the AW 127 series, which focuses on high-density interconnect solutions. The series offers various pin counts and mounting options to support diverse electronic design requirements. Assmann WSW Components manufactures these connectors to meet international quality standards, providing consistent performance across automotive, industrial, and consumer sectors.

Replacement Considerations

Direct substitutes include other 50-position 1.27mm SMT receptacles from the same manufacturer series. Verify that alternative parts maintain identical gold plating specifications and UL 94 V-0 ratings. Check mechanical compatibility regarding height and footprint before integrating cross-manufacturer replacements.

FAQ

What is the dielectric withstanding voltage for this connector?

The connector can withstand an AC voltage of 500V for one minute without breakdown.

Is the contact material phosphor bronze?

Yes, the contacts are made from phosphor bronze and are gold-plated for enhanced performance.