EB72S-SB2240X Equivalent & Substitute Parts

Part Overview

The EB72S-SB2240X is a 44-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 and through-hole solder termination, suitable for applications requiring reliable edge card interfacing. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and maintenance.

Substiute Parts

EB72S-SB2240X

Vishay DaleIn Stock: 1068EB72S-SB2240X Datasheet

Current PartRFQ

306-022-520-102

Mercury United Electronics, Inc.In Stock: 934306-022-520-102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EB72S-SB2240X is determined by the following critical parameters:

• Position Count & Pitch: 44 positions at 0.156" (3.96mm) spacing (non-negotiable)
• Connector Type: Dual-edge female configuration
• Card Thickness Tolerance: Accommodation of 0.054" ~ 0.071" (1.37mm ~ 1.80mm) card thickness
• Electrical Interface: Gold-plated contacts with solder termination
• Mounting Configuration: Through-hole mounting with flush mount flange

The substitute part 306-022-520-102 (Mercury United Electronics, Inc.) meets these core functional requirements. While certain parameters differ (contact type, read-out configuration, operating temperature range), these variations remain within acceptable substitution boundaries for the specified connector category and do not compromise the primary electrical or mechanical interface function.

Parameter Comparison

Engineering Selection Recommendations

The 306-022-520-102 is the designated manufacturer-recommended substitute for the obsolete EB72S-SB2240X. Selection of this alternative is supported by:

• Active Product Status: The substitute maintains current manufacturing and supply chain availability, eliminating obsolescence risk.
• Regulatory Compliance: The 306-022-520-102 achieves ROHS3 compliance, whereas the original part is non-compliant. This distinction is significant for applications subject to RoHS directives.
• Functional Compatibility: Core mechanical and electrical parameters align with the original specification, ensuring direct replacement capability in existing PCB designs.
• Operating Temperature Consideration: The substitute operates within -40°C ~ 105°C, which is narrower than the original -55°C ~ 125°C range. Applications requiring the full original temperature envelope must evaluate this limitation against actual system requirements.

Frequently Asked Questions (FAQ)

Q: Can the 306-022-520-102 be used as a direct replacement for the EB72S-SB2240X?

A: Yes. Both connectors share identical position count (44), pitch spacing (0.156"), dual-edge configuration, and mounting interface. The substitute is electrically and mechanically compatible for standard applications.

Q: What is the significance of the different contact types (Phosphor Bronze vs. Copper Alloy)?

A: Both materials provide adequate electrical conductivity and mechanical durability for card edge connector applications. The contact material difference does not affect substitution eligibility for this connector category.

Q: Does the operating temperature range difference affect substitution suitability?

A: The substitute operates within -40°C ~ 105°C versus the original -55°C ~ 125°C. Applications operating exclusively within the substitute's range experience no limitation. Systems requiring the full original temperature envelope must confirm the substitute's adequacy for their specific thermal environment.

Q: What is the impact of RoHS compliance differences?

A: The original EB72S-SB2240X is RoHS non-compliant, while the 306-022-520-102 is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the substitute provides regulatory alignment. Legacy systems without RoHS mandates are unaffected by this distinction.

Q: Are there packaging differences between these connectors?

A: The original part packaging is unspecified, while the substitute is supplied in bulk packaging. This affects procurement and handling procedures but does not impact electrical or mechanical performance.

Q: What is the card thickness tolerance overlap?

A: Both connectors accommodate card thicknesses within 0.054" ~ 0.070" (1.37mm ~ 1.78mm). The substitute's upper tolerance is 0.001" (0.02mm) lower than the original. Cards within the overlapping range are compatible with both connectors.