EB72D-SK3640X Equivalent & Substitute Parts

Part Overview

The EB72D-SK3640X 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 phosphor bronze contacts with gold finish, through-hole solder termination, and operates across -55°C to 125°C. The product is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	EB72D-SK3640X
Manufacturer	Vishay Dale
Category	Card Edge Connectors
Number of Positions	72
Pitch	0.156" (3.96mm)
Gender	Female
Number of Rows	2
Card Type	Non Specified - Dual Edge
Contact Material	Phosphor Bronze
Contact Finish	Gold
Termination	Solder
Mounting Type	Through Hole
Operating Temperature Range	-55°C ~ 125°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the EB72D-SK3640X is determined by strict alignment of the following critical parameters:

Position Count & Pitch: 72 positions at 0.156" (3.96mm) spacing (non-negotiable)
Connector Type: Dual-edge female configuration
Contact System: Phosphor bronze with gold finish
Termination Method: Solder through-hole
Electrical Performance: Dual read-out capability
Card Thickness Compatibility: Acceptable range 0.054" ~ 0.071" (1.37mm ~ 1.80mm)
Temperature Operating Range: Minimum -55°C ~ 125°C or better

The GSM36DRKH from Sullins Connector Solutions meets all substitution criteria. This connector maintains identical position count, pitch, gender, contact material, finish specification, and termination method. The substitute operates across -65°C ~ 125°C, providing superior low-temperature performance. Card thickness tolerance of 0.062" (1.57mm) falls within the acceptable range for the original design.

Parameter Comparison

Parameter	EB72D-SK3640X (Vishay Dale)	GSM36DRKH (Sullins)	Compatibility
Number of Positions	72	72	Match
Pitch	0.156" (3.96mm)	0.156" (3.96mm)	Match
Gender	Female	Female	Match
Number of Rows	2	2	Match
Card Type	Non Specified - Dual Edge	Non Specified - Dual Edge	Match
Contact Material	Phosphor Bronze	Phosphor Bronze	Match
Contact Finish	Gold	Gold	Match
Contact Type	Full Bellows	Full Bellows	Match
Termination	Solder	Solder	Match
Mounting Type	Through Hole	Through Hole	Match
Operating Temperature	-55°C ~ 125°C	-65°C ~ 125°C	Substitute exceeds minimum
Card Thickness	0.054" ~ 0.071" (1.37mm ~ 1.80mm)	0.062" (1.57mm)	Within tolerance
Read Out	Dual	Dual	Match
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute compliant

Engineering Selection Recommendations

The GSM36DRKH is the qualified substitute for EB72D-SK3640X applications. Selection rationale is based on:

Product Status: The original EB72D-SK3640X is obsolete. The GSM36DRKH carries active product status with current manufacturing support and documented availability.

Compliance & Certifications: GSM36DRKH achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. Both parts maintain REACH Unaffected status and EAR99 export classification. For applications requiring RoHS compliance, GSM36DRKH provides regulatory alignment.

Electrical & Mechanical Equivalence: All critical connector parameters—position count, pitch, contact system, termination method, and dual-edge configuration—are identical. The substitute's operating temperature range of -65°C ~ 125°C exceeds the original specification, providing enhanced performance margin for low-temperature environments.

Physical Compatibility: Card thickness tolerance of 0.062" (1.57mm) for GSM36DRKH falls within the acceptable range (0.054" ~ 0.071") specified for EB72D-SK3640X, ensuring mechanical fit in existing card slot designs.

Frequently Asked Questions (FAQ)

Q: Can GSM36DRKH directly replace EB72D-SK3640X in existing designs?

A: Yes. Both connectors share identical position count (72), pitch (0.156"), gender (female), row configuration (2), contact material (phosphor bronze), contact finish (gold), contact type (full bellows), termination method (solder), and mounting type (through hole). Card thickness tolerance is compatible.

Q: What is the difference in operating temperature range?

A: EB72D-SK3640X operates -55°C ~ 125°C. GSM36DRKH operates -65°C ~ 125°C. The substitute provides 10°C additional low-temperature capability, making it suitable for applications requiring extended cold-temperature performance.

Q: Does the RoHS compliance difference affect substitution?

A: RoHS compliance is a regulatory requirement, not a functional connector parameter. GSM36DRKH's ROHS3 compliance makes it suitable for applications subject to RoHS regulations. The original EB72D-SK3640X remains suitable for applications without RoHS requirements.

Q: Are there packaging differences between these parts?

A: EB72D-SK3640X packaging is not specified in available documentation. GSM36DRKH is supplied in Tray packaging. Confirm packaging requirements with your procurement process.

Q: What is the card thickness specification for each connector?

A: EB72D-SK3640X accepts card thickness 0.054" ~ 0.071" (1.37mm ~ 1.80mm). GSM36DRKH is specified for 0.062" (1.57mm) nominal thickness, which falls within the acceptable range for the original design.

Q: Are both connectors suitable for solder termination?

A: Yes. Both EB72D-SK3640X and GSM36DRKH use solder termination with through-hole mounting, maintaining identical assembly and rework procedures.

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