EB71S-SA1540X Equivalent & Substitute Parts

Part Overview

The EB71S-SA1540X is a 30-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, panel mount configuration, and solder eyelet termination. The product is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and field service applications.

Substiute Parts

EB71S-SA1540X

Vishay DaleIn Stock: 884EB71S-SA1540X Datasheet

Current PartRFQ

EBT156-15A2X

Vishay DaleIn Stock: 1043EBT156-15A2X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EB71S-SA1540X is based on the following critical parameters that must remain consistent:

• Connector Type & Configuration: 30-position female card edge connector, dual edge layout
• Pitch Specification: 0.156" (3.96mm) center-to-center spacing
• Electrical Interface: Solder eyelet termination for PCB mounting
• Contact Finish: Gold plating for corrosion resistance and signal integrity
• Mounting Method: Panel mount configuration
• Gender & Position Count: Female connector with 15 positions per row, 2 rows total

The substitute part EBT156-15A2X maintains these core functional parameters while offering an active product status and improved availability. Variations in card thickness tolerance, insulation material, and contact material composition are within acceptable engineering substitution parameters for this connector category.

Parameter Comparison

Engineering Selection Recommendations

The EBT156-15A2X is the direct equivalent substitute for the EB71S-SA1540X based on the following engineering criteria:

Product Status: The substitute part maintains active production status, ensuring long-term availability and supply chain reliability compared to the obsolete main part.

Electrical & Mechanical Compatibility: Both connectors share identical pitch (0.156"), position count (30), row configuration (2), and termination method (solder eyelet). The substitute's card thickness specification of 0.062" falls within the main part's tolerance range of 0.054" ~ 0.071", confirming mechanical interchangeability.

Contact & Finish Specifications: Both parts feature gold-plated contacts for equivalent electrical performance and corrosion resistance. The substitute uses flash gold plating versus unspecified thickness on the main part, maintaining functional equivalence.

Compliance Alignment: Both parts share identical RoHS non-compliance status and ECCN/HTSUS classifications, ensuring regulatory consistency in design transitions.

Insulation Material Difference: The substitute employs phenolic glass-filled insulation versus the main part's DAP material. This represents a material upgrade common in connector evolution, providing improved mechanical and thermal stability without affecting connector function.

Frequently Asked Questions (FAQ)

Q: Can the EBT156-15A2X directly replace the EB71S-SA1540X in existing designs?

A: Yes. Both connectors maintain identical pitch (0.156"), position count (30), dual edge configuration, and solder eyelet termination. The substitute's card thickness specification is compatible with the main part's tolerance range. No PCB redesign is required.

Q: What is the significance of the card thickness difference?

A: The main part accepts cards ranging from 0.054" to 0.071" (1.37mm to 1.80mm). The substitute is specified for 0.062" (1.57mm), which falls within this range. If your application uses cards outside the substitute's nominal specification, verify compatibility with the tolerance range before implementation.

Q: Why does the substitute use a different insulation material?

A: The phenolic glass-filled material in the EBT156-15A2X represents a material advancement over the DAP used in the obsolete part. This change improves mechanical durability and thermal performance while maintaining electrical and functional equivalence for card edge connector applications.

Q: Are there any compliance or certification differences?

A: Both parts share identical RoHS non-compliance status, ECCN (EAR99), and HTSUS classifications. No compliance adjustments are required when transitioning from the main part to the substitute.

Q: What is the contact finish difference between the two parts?

A: The main part specifies gold contact finish without thickness specification. The substitute uses flash gold plating, a standard industrial practice for card edge connectors. Both provide equivalent corrosion resistance and electrical performance.

Q: Is the substitute available in the same packaging as the main part?

A: The substitute is supplied in bulk packaging. Verify packaging requirements for your procurement process, as the main part's packaging specification was not provided.