EB72S-SB2240W Equivalent & Substitute Parts

Part Overview

The EB72S-SB2240W 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 across an operating temperature range of -55°C to 125°C.

The EB72S-SB2240W is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance and production requirements.

Substiute Parts

EB72S-SB2240W

Vishay DaleIn Stock: 739EB72S-SB2240W Datasheet

Current PartRFQ

306-022-520-101

Mercury United Electronics, Inc.In Stock: 1089306-022-520-101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EB72S-SB2240W with the 306-022-520-101 is based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Number of positions: 44
• Gender: Female
• Pitch: 0.156" (3.96mm)
• Card type: Non Specified - Dual Edge
• Number of rows: 2
• Mounting type: Through Hole
• Termination: Solder
• Contact finish: Gold
• Moisture Sensitivity Level: 1 (Unlimited)
• ECCN and HTSUS classifications: Identical

Allowable Variations:

• Card thickness range: 0.054" ~ 0.070" (substitute) vs. 0.054" ~ 0.071" (main part) — substitute accommodates the primary thickness range with minimal deviation
• Contact material: Copper Alloy (substitute) vs. Phosphor Bronze (main part) — both provide equivalent electrical conductivity and mechanical performance for this connector class
• Contact type: Cantilever (substitute) vs. Full Bellows (main part) — both contact designs provide reliable electrical engagement for dual-edge card applications
• Read Out: Dual (substitute) vs. Single (main part) — dual read-out provides enhanced contact redundancy
• Operating temperature: -40°C ~ 105°C (substitute) vs. -55°C ~ 125°C (main part) — substitute covers standard industrial operating range; applications requiring extended low-temperature performance (-55°C) require evaluation
• RoHS Status: ROHS3 Compliant (substitute) vs. RoHS non-compliant (main part) — substitute meets current environmental compliance requirements

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 306-022-520-101

The 306-022-520-101 is the recommended substitute for the obsolete EB72S-SB2240W. This part maintains functional equivalence across all critical connector parameters: 44-position dual-edge configuration, 0.156" pitch, female gender, through-hole solder termination, and gold contact finish.

Compliance Advantage: The 306-022-520-101 is ROHS3 compliant and carries active product status, ensuring long-term supply availability and alignment with current environmental regulations. The EB72S-SB2240W is RoHS non-compliant and obsolete.

Temperature Range Consideration: The substitute operates within -40°C to 105°C, compared to the main part's -55°C to 125°C range. Applications requiring operation below -40°C or above 105°C require design review and alternative component evaluation.

Contact Design Difference: The substitute employs cantilever contacts versus the main part's full bellows design. Both contact types provide reliable electrical engagement for dual-edge card applications within their specified operating parameters.

Card Thickness Compatibility: The substitute accommodates card thickness from 0.054" to 0.070", which covers the primary operating range of the main part (0.054" to 0.071"). Cards at the upper tolerance limit (0.071") require verification against the substitute's maximum specification (0.070").

Frequently Asked Questions (FAQ)

Q: Can the 306-022-520-101 directly replace the EB72S-SB2240W in existing designs?

A: Yes, for applications operating within -40°C to 105°C. The 306-022-520-101 maintains identical pitch, position count, gender, and termination method. PCB layout and card edge dimensions remain compatible. Applications requiring the full -55°C to 125°C temperature range of the original part require thermal performance evaluation.

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

A: Full bellows contacts provide spring-loaded engagement with distributed contact pressure across a wider surface area. Cantilever contacts provide point-contact engagement with spring return. Both designs deliver reliable electrical connection for dual-edge card applications. The cantilever design in the substitute is suitable for standard insertion/removal cycles and electrical performance requirements.

Q: Does the card thickness range difference affect compatibility?

A: The substitute accommodates 0.054" to 0.070" card thickness. The original part specifies 0.054" to 0.071". Cards within 0.054" to 0.070" are fully compatible. Cards at 0.071" thickness fall outside the substitute's specification and require contact force verification or alternative component selection.

Q: Why is RoHS compliance important for this substitution?

A: The 306-022-520-101 is ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components. The original EB72S-SB2240W is RoHS non-compliant. For new designs or production requiring regulatory compliance, the substitute ensures adherence to environmental standards.

Q: Are there any electrical performance differences between phosphor bronze and copper alloy contacts?

A: Both materials provide equivalent electrical conductivity and contact resistance performance for this connector class. Copper alloy contacts in the substitute deliver the same signal integrity and power handling characteristics as phosphor bronze contacts in the original part.

Q: What is the inventory status for the substitute part?

A: The 306-022-520-101 is in active production with 992 pieces available in new original stock. The EB72S-SB2240W is obsolete with limited remaining inventory (665 pieces). The substitute ensures long-term supply chain continuity.