307-056-544-201 Equivalent & Substitute Parts

Part Overview

The 307-056-544-201 is a 56-position female card edge connector manufactured by Mercury United Electronics, Inc. This connector features dual edge configuration with 0.156" (3.96mm) pitch spacing, gold-plated contacts, and through-hole wire wrap termination. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and procurement planning.

Substiute Parts

307-056-544-201

Mercury United Electronics, Inc.In Stock: 856307-056-544-201 Datasheet

Current PartRFQ

307-056-540-201

Mercury United Electronics, Inc.In Stock: 810307-056-540-201 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 307-056-540-201 qualifies as a direct substitute for the 307-056-544-201 based on the following critical parameters:

Matching Parameters:

• Number of positions: 56
• Gender: Female
• Pitch: 0.156" (3.96mm)
• Card type: Non Specified - Dual Edge
• Number of rows: 2
• Mounting type: Through Hole
• Termination: Wire Wrap
• Contact finish: Gold
• Operating temperature range: -40°C ~ 105°C
• Insulation material: Polyester Thermoplastic
• Color: Green
• RoHS Status: ROHS3 Compliant

Allowable Variation:

• Card thickness tolerance: The substitute accepts 0.054" ~ 0.070" (1.37mm ~ 1.78mm), which encompasses the original specification of 0.062" (1.57mm)
• Contact material: Substitute uses Copper Alloy versus original Copper, Nickel, Tin Alloy
• Contact type: Substitute features Semi Bellows configuration

Parameter Comparison

Engineering Selection Recommendations

The 307-056-540-201 is the appropriate substitute for the obsolete 307-056-544-201. The substitute maintains active product status with Mercury United Electronics, Inc., ensuring continued availability and manufacturing support. Both components carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The substitute's card thickness tolerance range accommodates the original specification, and the Semi Bellows contact type provides enhanced mechanical reliability compared to the unspecified contact type of the original part. Selection of the 307-056-540-201 eliminates obsolescence risk while maintaining full electrical and mechanical compatibility within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the 307-056-540-201 directly replace the 307-056-544-201 in existing designs?

A: Yes. Both connectors share identical pitch (0.156"), position count (56), row configuration (2), and termination method (wire wrap). The substitute's card thickness tolerance of 0.054" ~ 0.070" encompasses the original 0.062" specification.

Q: What is the significance of the card thickness tolerance difference?

A: The original part specifies a fixed card thickness of 0.062" (1.57mm). The substitute accepts a tolerance range of 0.054" ~ 0.070" (1.37mm ~ 1.78mm). This range includes the original specification, ensuring compatibility with cards designed for the 307-056-544-201.

Q: How do the contact materials differ between these parts?

A: The original uses Copper, Nickel, Tin Alloy contacts, while the substitute uses Copper Alloy contacts. Both are gold-plated and suitable for wire wrap termination in the specified operating temperature range.

Q: What is the advantage of the Semi Bellows contact type in the substitute?

A: The Semi Bellows contact configuration in the 307-056-540-201 provides improved mechanical engagement and contact pressure consistency compared to unspecified contact types, enhancing signal integrity and connection reliability.

Q: Are there packaging differences between these parts?

A: The original part has unspecified packaging, while the substitute is supplied in bulk packaging. This difference does not affect electrical or mechanical compatibility.

Q: Do both parts meet current compliance standards?

A: Yes. Both the 307-056-544-201 and 307-056-540-201 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the 307-056-544-201 classified as obsolete?

A: Obsolescence classification indicates the part is no longer in active production. The 307-056-540-201 provides a direct path for continued system support and procurement without design modification.