MRS2-20-U-SMT Equivalent & Substitute Parts

Part Overview

The MRS2-20-U-SMT is a 20-position header connector manufactured by Adam Tech, designed for board-to-board applications with 1.0mm pitch surface mount configuration. This connector features female socket contacts with gold plating and is rated for 1A per contact at 250VAC. The product is currently active and widely available with 1115 pieces in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, supply chain alternatives, or packaging preferences.

Substiute Parts

MRS2-20-U-SMT

Adam TechIn Stock: 1167MRS2-20-U-SMT Datasheet

Current PartRFQ

BC085-20-A-0390-L-C

GCTIn Stock: 5879BC085-20-A-0390-L-C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The BC085-20-A-0390-L-C manufactured by GCT qualifies as a direct substitute for the MRS2-20-U-SMT based on the following critical parameters:

• Electrical Compatibility: Both connectors support 20 positions with 1.0mm pitch, 1A current rating, and 250VAC voltage rating
• Mechanical Compatibility: Both feature 2-row configuration with 0.039" (1.00mm) row spacing, surface mount solder termination, and female socket contacts
• Environmental Compliance: Both meet UL94 V-0 flammability rating, operate across -40°C to 105°C, and are ROHS3 compliant
• Contact Specifications: Both utilize gold-plated phosphor bronze contacts with flash thickness and square contact geometry
• Insulation Properties: Both feature black insulation at 0.089" (2.26mm) height with MSL 1 rating

The primary differences are packaging format (Tube vs. Tape & Reel) and insulation material (Thermoplastic vs. Liquid Crystal Polymer), which do not affect electrical or mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both the MRS2-20-U-SMT and BC085-20-A-0390-L-C are active products with full ROHS3 compliance and identical electrical ratings. Selection between these parts should be based on:

• Supply Availability: MRS2-20-U-SMT has 1115 pieces in stock; BC085-20-A-0390-L-C has 5859 pieces available
• Packaging Requirements: Choose Tube packaging for manual assembly or small-volume production; select Tape & Reel for automated pick-and-place assembly
• Insulation Material: Liquid Crystal Polymer (LCP) in the BC085 series offers superior dimensional stability and chemical resistance compared to thermoplastic materials
• Compliance Certifications: Both parts meet identical regulatory requirements (UL94 V-0, ROHS3, REACH Unaffected, EAR99)

Frequently Asked Questions (FAQ)

Q: Are MRS2-20-U-SMT and BC085-20-A-0390-L-C electrically interchangeable?

A: Yes. Both connectors support identical electrical specifications: 20 positions, 1.0mm pitch, 1A current rating, and 250VAC voltage rating with gold-plated phosphor bronze contacts.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is suitable for manual handling and small-quantity applications. Tape & Reel packaging is designed for automated assembly equipment and high-volume production runs.

Q: Does insulation material affect connector performance?

A: Insulation material does not affect electrical performance. Liquid Crystal Polymer (LCP) provides enhanced dimensional stability and chemical resistance compared to thermoplastic materials, which may be beneficial in demanding environmental conditions.

Q: Can these connectors be used interchangeably in existing designs?

A: Yes, provided the PCB footprint and mating connector are compatible with the 1.0mm pitch, 2-row configuration. Both parts feature identical mechanical dimensions and solder termination specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both MRS2-20-U-SMT and BC085-20-A-0390-L-C are ROHS3 compliant and REACH unaffected.