EB73S-SB1040X Equivalent & Substitute Parts

Part Overview

The EB73S-SB1040X is a 20-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, through-hole solder termination, and operates across -55°C to 125°C. The product is classified as obsolete, making equivalent substitutes necessary for ongoing system support and new design implementations where this connector type is required.

Substiute Parts

EB73S-SB1040X

Vishay DaleIn Stock: 935EB73S-SB1040X Datasheet

Current PartRFQ

356-010-520-102

Mercury United Electronics, Inc.In Stock: 793356-010-520-102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EB73S-SB1040X is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Number of positions: 20
• Gender: Female
• Pitch: 0.156" (3.96mm)
• Card type: Dual edge
• Number of rows: 2
• Mounting type: Through hole
• Termination: Solder
• Contact finish: Gold
• Color: Black

Secondary Compatibility Parameters:

• Card thickness tolerance range
• Operating temperature range
• Flange feature specifications
• Insulation material compatibility

The substitute part 356-010-520-102 (Mercury United Electronics, Inc.) meets all primary substitution criteria. Variations in contact material (copper alloy vs. phosphor bronze), contact type (cantilever vs. full bellows), and operating temperature range (-40°C ~ 105°C vs. -55°C ~ 125°C) are noted but do not preclude substitution when application requirements fall within the substitute's specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The 356-010-520-102 serves as the primary substitute for the obsolete EB73S-SB1040X. Selection should be based on the following engineering considerations:

Product Status: The substitute is active and currently manufactured, ensuring availability for production and field replacement applications.

Compliance: The 356-010-520-102 is ROHS3 compliant, whereas the original part is RoHS non-compliant. This distinction is critical for applications subject to RoHS regulations. Both parts are REACH unaffected and classified as EAR99.

Operating Temperature: The substitute operates within -40°C to 105°C, which is narrower than the original -55°C to 125°C range. Applications requiring operation below -40°C or above 105°C must evaluate alternative solutions or confirm that the substitute's range is sufficient for the intended use case.

Card Thickness Tolerance: The substitute accommodates card thickness of 0.054" to 0.070" (1.37mm to 1.78mm), compared to the original 0.054" to 0.071" (1.37mm to 1.80mm). This represents a 0.001" (0.02mm) reduction at the upper tolerance limit and should be evaluated against actual card specifications.

Contact Characteristics: The substitute uses copper alloy contacts with cantilever design versus the original phosphor bronze with full bellows. Both configurations provide gold plating and are suitable for 0.156" pitch dual-edge applications.

Frequently Asked Questions (FAQ)

Q: Can the 356-010-520-102 be used as a direct replacement for the EB73S-SB1040X?

A: Yes, for applications where operating temperature remains within -40°C to 105°C and card thickness does not exceed 0.070" (1.78mm). The 20-position, dual-edge, 0.156" pitch configuration is identical. Verify that your application requirements fall within the substitute's specified operating envelope before implementation.

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

A: Full bellows contacts (original part) provide a spring-like action with greater compliance and contact force distribution. Cantilever contacts (substitute) offer a simpler design with direct spring action. Both are suitable for card edge connector applications; selection depends on specific insertion force and contact reliability requirements for your application.

Q: Does the substitute meet RoHS requirements?

A: Yes. The 356-010-520-102 is ROHS3 compliant, whereas the original EB73S-SB1040X is RoHS non-compliant. If your application or market requires RoHS compliance, the substitute is the appropriate choice.

Q: Are there packaging differences between the main part and substitute?

A: The original part packaging is not specified. The substitute is supplied in bulk packaging. Confirm bulk packaging compatibility with your procurement and assembly processes.

Q: What should I do if my application requires operation below -40°C or above 105°C?

A: The substitute's operating temperature range (-40°C to 105°C) is narrower than the original (-55°C to 125°C). If your application requires extended temperature operation, evaluate alternative card edge connectors or confirm that the substitute's range is acceptable for your specific use case.

Q: Is the contact finish thickness specification important for my application?

A: The substitute specifies 10.0µin (0.25µm) gold plating thickness, while the original does not provide this specification. For applications with specific contact resistance or durability requirements, this specification may be relevant. Standard gold plating on card edge connectors typically ranges from 5 to 50µin, so the substitute's specification is within normal parameters.