EB72D-SK4340W Card Edge Connector Equivalent & Substitute Parts

Part Overview

The EB72D-SK4340W is an 86-position female card edge connector manufactured by Vishay Dale, designed for dual-edge applications with 0.156" (3.96mm) pitch spacing. This connector features phosphor bronze contacts with gold plating and is rated for operating temperatures from -55°C to 125°C. The product is currently obsolete, making identification of compatible substitute components essential for system maintenance, repair, and legacy equipment support.

Key Parameters

Parameter	Value
Number of Positions	86
Pitch	0.156" (3.96mm)
Card Type	Dual Edge
Gender	Female
Number of Rows	2
Contact Material	Phosphor Bronze
Contact Finish	Gold
Mounting Type	Through Hole
Termination	Solder
Operating Temperature Range	-55°C ~ 125°C
Card Thickness	0.054" ~ 0.071" (1.37mm ~ 1.80mm)

Substitute Part Grouping Explanation

Substitution of the EB72D-SK4340W is determined by strict alignment of the following critical parameters:

Position Count & Pitch: 86 positions at 0.156" (3.96mm) spacing is the primary electrical requirement
Connector Type: Dual-edge female configuration with 2 rows of 43 positions each
Contact System: Phosphor bronze with gold plating ensures electrical performance and corrosion resistance
Mounting & Termination: Through-hole solder termination for PCB integration
Operating Temperature: Minimum -55°C to 125°C range required for thermal compatibility
Card Thickness Tolerance: Physical accommodation of 0.054" to 0.071" card thickness

The GSM43DRKN from Sullins Connector Solutions meets all critical substitution criteria while offering improved product status (Active vs. Obsolete) and enhanced compliance certifications.

Parameter Comparison

Parameter	EB72D-SK4340W (Vishay Dale)	GSM43DRKN (Sullins)	Compatibility
Number of Positions	86	86	Match
Pitch	0.156" (3.96mm)	0.156" (3.96mm)	Match
Card Type	Dual Edge	Dual Edge	Match
Gender	Female	Female	Match
Number of Rows	2	2	Match
Contact Material	Phosphor Bronze	Phosphor Bronze	Match
Contact Finish	Gold	Gold	Match
Mounting Type	Through Hole	Through Hole	Match
Termination	Solder	Solder	Match
Operating Temperature	-55°C ~ 125°C	-65°C ~ 125°C	Compatible (Sullins exceeds minimum)
Card Thickness	0.054" ~ 0.071" (1.37mm ~ 1.80mm)	0.062" (1.57mm)	Compatible (within tolerance)
Product Status	Obsolete	Active	Substitute is current production
RoHS Compliance	Non-compliant	ROHS3 Compliant	Substitute meets modern standards

Engineering Selection Recommendations

The GSM43DRKN is the qualified substitute for the obsolete EB72D-SK4340W based on the following engineering criteria:

Electrical & Mechanical Compatibility: All critical parameters align precisely—86 positions, 0.156" pitch, dual-edge female configuration, phosphor bronze gold-plated contacts, and through-hole solder termination. The GSM43DRKN card thickness of 0.062" falls within the EB72D-SK4340W tolerance band of 0.054" to 0.071".

Thermal Performance: The GSM43DRKN operating temperature range of -65°C to 125°C exceeds the original specification of -55°C to 125°C, providing enhanced thermal margin.

Regulatory & Compliance Status: The GSM43DRKN is ROHS3 compliant and carries Active product status, ensuring long-term availability and compliance with current environmental regulations. The original EB72D-SK4340W is RoHS non-compliant and obsolete.

Packaging & Availability: GSM43DRKN is supplied in Tray packaging with current inventory availability, supporting production and repair workflows.

Frequently Asked Questions (FAQ)

Q: Can GSM43DRKN directly replace EB72D-SK4340W without PCB modification?

A: Yes. Both connectors share identical position counts (86), pitch spacing (0.156"), dual-edge female configuration, and through-hole solder termination. The GSM43DRKN card thickness of 0.062" is within the EB72D-SK4340W tolerance range of 0.054" to 0.071", requiring no PCB redesign.

Q: What is the difference in operating temperature range?

A: The EB72D-SK4340W operates from -55°C to 125°C, while the GSM43DRKN operates from -65°C to 125°C. The GSM43DRKN provides an additional 10°C of low-temperature margin, making it suitable for more demanding thermal environments.

Q: Are there compliance differences between these connectors?

A: Yes. The EB72D-SK4340W is RoHS non-compliant and obsolete. The GSM43DRKN is ROHS3 compliant and maintains Active product status, ensuring regulatory alignment with current manufacturing standards and long-term supply chain support.

Q: Does packaging format affect connector performance?

A: No. The GSM43DRKN is supplied in Tray packaging, which is a standard protective format for connector storage and handling. Packaging does not affect electrical or mechanical performance. Tray packaging supports efficient inventory management and automated assembly processes.

Q: Are contact materials and finishes identical?

A: Yes. Both connectors use phosphor bronze contacts with gold plating. The GSM43DRKN specifies a contact finish thickness of 10.0µin (0.25µm), providing consistent electrical conductivity and corrosion resistance equivalent to the original design.

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