EB71D-SK3660X Equivalent & Substitute Parts

Part Overview

The EB71D-SK3660X is a 72-position female card edge connector manufactured by Vishay Dale, designed for dual-edge applications with 0.156" (3.96mm) pitch spacing. This connector features gold-plated phosphor bronze contacts, through-hole solder termination, and operates across -55°C to 125°C. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

EB71D-SK3660X

Vishay DaleIn Stock: 815EB71D-SK3660X Datasheet

Current PartRFQ

RMM36DRKH

Sullins Connector SolutionsIn Stock: 760RMM36DRKH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the EB71D-SK3660X is determined by the following critical parameters:

• Connector Configuration: Dual-edge, female gender, 72-position arrangement (36 positions per row)
• Electrical Spacing: 0.156" (3.96mm) pitch maintains signal integrity and PCB layout compatibility
• Contact System: Phosphor bronze with gold plating ensures electrical performance and corrosion resistance
• Termination Method: Solder termination for permanent board attachment
• Mechanical Fit: Card thickness accommodation and flange mounting geometry
• Environmental Range: Operating temperature and moisture sensitivity specifications

The RMM36DRKH from Sullins Connector Solutions meets these core substitution criteria while maintaining functional equivalence for the dual-edge 72-position connector application.

Parameter Comparison

Engineering Selection Recommendations

The RMM36DRKH serves as a direct functional substitute for the obsolete EB71D-SK3660X. Selection should be based on the following engineering factors:

Product Status: The EB71D-SK3660X is obsolete, making the RMM36DRKH the appropriate choice for new designs and component replenishment. The Sullins connector is in active production with confirmed inventory availability.

Compliance Posture: The RMM36DRKH achieves ROHS3 compliance, whereas the original part is non-compliant. For applications subject to RoHS regulations or customer requirements, the substitute is the mandated selection.

Insulation Material Upgrade: The RMM36DRKH uses Polyphenylene Sulfide (PPS) insulation instead of Diallyl Phthalate (DAP). PPS provides superior thermal stability, chemical resistance, and dimensional consistency, representing a material enhancement over the original specification.

Thermal Performance: The RMM36DRKH extends the lower operating temperature limit to -65°C, providing additional environmental margin compared to the -55°C minimum of the original part.

Mechanical Compatibility: The substitute's 0.062" (1.57mm) card thickness specification falls within the original part's 0.054" ~ 0.071" acceptance range, ensuring mechanical fit on existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the RMM36DRKH directly replace the EB71D-SK3660X on existing PCBs?

A: Yes. Both connectors share identical pitch (0.156"), position count (72), contact configuration (phosphor bronze with gold plating), and termination method (solder). The RMM36DRKH's 0.062" card thickness falls within the original part's specified range of 0.054" ~ 0.071", ensuring mechanical compatibility with existing board designs.

Q: What is the significance of the insulation material change from DAP to PPS?

A: Polyphenylene Sulfide (PPS) offers superior thermal stability, chemical resistance, and dimensional consistency compared to Diallyl Phthalate (DAP). This material upgrade enhances connector reliability and performance, particularly in demanding thermal or chemical environments.

Q: Does the RoHS3 compliance of the RMM36DRKH affect electrical performance?

A: No. RoHS3 compliance reflects manufacturing process changes and material composition restrictions, not electrical characteristics. The substitute maintains identical electrical performance specifications including contact resistance, signal integrity, and operating voltage ratings.

Q: Are there packaging differences between the original and substitute?

A: The EB71D-SK3660X packaging is not specified in available documentation. The RMM36DRKH is supplied in Tray packaging. Verify packaging requirements for your procurement and assembly processes.

Q: What is the contact finish thickness specification for the RMM36DRKH?

A: The RMM36DRKH specifies 30.0µin (0.76µm) gold contact finish thickness. The original EB71D-SK3660X does not provide contact finish thickness documentation.

Q: Can the extended temperature range of the RMM36DRKH (-65°C vs. -55°C) be relied upon for all applications?

A: The RMM36DRKH's extended lower temperature limit provides additional environmental margin. However, application-specific thermal requirements should be validated against the connector's full electrical and mechanical specifications under actual operating conditions.