EB72S-SA1840X Equivalent & Substitute Parts

Part Overview

The EB72S-SA1840X 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 termination via solder eyelets. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and maintenance.

Substiute Parts

EB72S-SA1840X

Vishay DaleIn Stock: 1154EB72S-SA1840X 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

The Mercury United Electronics 306-018-500-102 qualifies as a functional substitute based on the following critical parameters:

Matching Parameters:

• 36-position female connector configuration
• Dual edge card edge design
• 0.156" (3.96mm) pitch spacing
• Panel mount installation method
• Solder eyelet termination
• Gold contact finish
• Flush mount flange with top opening and 0.128" (3.25mm) unthreaded diameter
• ECCN and HTSUS classifications identical

Allowable Variations:

• Contact material: Copper Alloy (substitute) vs. Phosphor Bronze (original) — both materials provide equivalent electrical performance in this application
• Contact type: Cantilever (substitute) vs. Full Bellows (original) — both designs accommodate the specified card thickness range
• Operating temperature: -40°C ~ 105°C (substitute) vs. -55°C ~ 125°C (original) — substitute range is narrower but covers standard industrial operating conditions
• Card thickness tolerance: 0.054" ~ 0.070" (substitute) vs. 0.054" ~ 0.071" (original) — overlap is sufficient for compatibility
• RoHS Status: ROHS3 Compliant (substitute) vs. Non-compliant (original) — substitute meets current environmental regulations

Parameter Comparison

Engineering Selection Recommendations

The 306-018-500-102 is an active product with ROHS3 compliance, providing a viable path for systems requiring environmental regulation adherence. The original EB72S-SA1840X is obsolete, necessitating substitution for new production or maintenance applications.

Selection between these components depends on system requirements:

• For applications within -40°C ~ 105°C operating range: The 306-018-500-102 is directly substitutable and offers the advantage of current RoHS3 compliance.
• For applications requiring extended temperature operation below -40°C or above 105°C: The original EB72S-SA1840X specifications must be maintained, or alternative sources must be evaluated.
• For new designs or production: The 306-018-500-102 is preferred due to active product status and regulatory compliance.

Both connectors share identical pitch, position count, card thickness overlap, mounting method, and termination style, ensuring mechanical and electrical compatibility within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the 306-018-500-102 directly replace the EB72S-SA1840X in existing assemblies?

A: Yes, within the operating temperature range of -40°C ~ 105°C. Both connectors feature identical 36-position dual edge configuration, 0.156" pitch, panel mount installation, and solder eyelet termination. The card thickness tolerance overlap (0.054" ~ 0.070") accommodates standard PCB specifications.

Q: What is the difference between Full Bellows and Cantilever contact types?

A: Both contact designs accommodate the specified card thickness range and provide equivalent electrical performance. Full Bellows contacts use a spring-loaded design with extended travel, while Cantilever contacts use a fixed beam design. For this connector application, both designs are functionally equivalent.

Q: Why does the substitute have a narrower operating temperature range?

A: The 306-018-500-102 is rated -40°C ~ 105°C, compared to the original -55°C ~ 125°C. This reflects the design specifications of each manufacturer. For applications operating within the narrower range, the substitute is fully compatible. Applications requiring extended temperature operation must retain the original component or identify alternative sources.

Q: Is the Copper Alloy contact material equivalent to Phosphor Bronze?

A: Yes. Both materials provide equivalent electrical conductivity and corrosion resistance for this connector application. The gold plating on both materials ensures consistent contact performance and reliability.

Q: What is the significance of ROHS3 compliance on the substitute?

A: ROHS3 compliance indicates the 306-018-500-102 meets current environmental regulations restricting hazardous substances. The original EB72S-SA1840X is non-compliant, making the substitute preferable for new production and systems subject to regulatory requirements.

Q: Are there packaging differences between these connectors?

A: The 306-018-500-102 is supplied in Bulk packaging. Verify packaging requirements for your application, as this may affect handling, storage, and inventory management procedures.