EB72S-SA1840Y Equivalent & Substitute Parts

Part Overview

The EB72S-SA1840Y is a 36-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 with full bellows design and panel mount configuration using solder eyelet termination. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and maintenance applications.

Substiute Parts

EB72S-SA1840Y

Vishay DaleIn Stock: 649EB72S-SA1840Y Datasheet

Current PartRFQ

306-018-500-102

Mercury United Electronics, Inc.In Stock: 1047306-018-500-102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EB72S-SA1840Y is determined by strict alignment with the following critical parameters:

• Position Count & Pitch: Substitute must provide exactly 36 positions at 0.156" (3.96mm) pitch to maintain PCB layout compatibility
• Connector Type: Dual edge, female gender configuration required for mechanical and electrical interface compatibility
• Card Thickness Accommodation: Substitute must accept card thickness within or overlapping the 0.054" ~ 0.071" range
• Contact Finish: Gold plating required for corrosion resistance and electrical performance consistency
• Mounting & Termination: Panel mount with solder eyelet termination to match existing assembly processes
• Electrical Interface: Dual row, 18 positions per row configuration must be maintained

The substitute part 306-018-500-102 (Mercury United Electronics, Inc.) meets these core substitution criteria across all mandatory parameters.

Parameter Comparison

Engineering Selection Recommendations

The 306-018-500-102 serves as the qualified substitute for the obsolete EB72S-SA1840Y based on the following engineering criteria:

Mechanical Compatibility: All critical dimensional parameters align, including position count, pitch spacing, card thickness accommodation, and mounting configuration. The card thickness range overlap (0.054" ~ 0.070") covers the standard operating envelope for this connector class.

Electrical Interface: Dual row, 18-position-per-row configuration and gold contact finish ensure electrical performance equivalence for signal integrity and contact resistance specifications.

Product Availability: The substitute part maintains active production status with confirmed inventory availability (999 pcs), eliminating supply chain risk associated with the obsolete original part.

Regulatory Compliance: The 306-018-500-102 achieves ROHS3 compliance, providing improved environmental and regulatory standing compared to the non-compliant original part. Both parts maintain REACH Unaffected status and EAR99 export classification.

Operating Temperature Consideration: The substitute operates within -40°C ~ 105°C, which covers the majority of standard industrial applications. Systems requiring the full -55°C lower temperature limit of the original part require thermal performance validation.

Frequently Asked Questions (FAQ)

Q: Can the 306-018-500-102 be used as a direct replacement for the EB72S-SA1840Y?

A: Yes, for applications within the -40°C ~ 105°C operating range. The substitute matches all critical mechanical and electrical parameters: 36 positions, 0.156" pitch, dual edge female configuration, gold contact finish, and panel mount solder eyelet termination. Card thickness accommodation overlaps at 0.054" ~ 0.070".

Q: What is the primary difference between these two connectors?

A: The main differences are product status (obsolete vs. active), contact material composition (phosphor bronze vs. copper alloy), contact type (full bellows vs. cantilever), flange design (threaded vs. unthreaded), and operating temperature range (-55°C ~ 125°C vs. -40°C ~ 105°C). Functionally, both provide equivalent 36-position dual edge female connectivity at 0.156" pitch.

Q: Are there any compatibility concerns with the card thickness range?

A: The substitute accommodates cards from 0.054" ~ 0.070" (1.37mm ~ 1.78mm), which overlaps with the original specification of 0.054" ~ 0.071" (1.37mm ~ 1.80mm). Cards at the maximum thickness of 0.071" may not be fully compatible with the substitute. Verify your specific card thickness against the substitute's range.

Q: Does the substitute meet current regulatory requirements?

A: The 306-018-500-102 is ROHS3 compliant, providing improved environmental compliance compared to the non-compliant original part. Both parts are REACH Unaffected and classified as EAR99 for export purposes.

Q: What is the difference between "full bellows" and "cantilever" contact types?

A: Contact type affects mechanical engagement and contact force characteristics. Full bellows contacts provide distributed spring force, while cantilever contacts use a single spring arm. Both designs achieve gold-plated contact finish and are suitable for 0.156" pitch edge card applications. Selection depends on specific insertion force and contact pressure requirements of your application.

Q: Is the substitute available in the same packaging as the original?

A: The substitute is supplied in bulk packaging, whereas the original part packaging specification is not detailed. Confirm packaging requirements with your procurement process.