307-012-526-201 Equivalent & Substitute Parts

Part Overview

The 307-012-526-201 is a 12-position female card edge connector manufactured by Mercury United Electronics, Inc. This connector features dual edge configuration with 0.156" (3.96mm) pitch spacing, gold-plated contacts, and through-hole solder termination. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and procurement planning. The connector is designed for applications requiring dual-row edge card interfaces with standardized pitch and contact geometry.

Substiute Parts

307-012-526-201

Mercury United Electronics, Inc.In Stock: 933307-012-526-201 Datasheet

Current PartRFQ

307-012-520-201

Mercury United Electronics, Inc.In Stock: 973307-012-520-201 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 307-012-526-201 is determined by strict alignment of the following critical parameters:

Position and Pitch Compatibility: The substitute must maintain 12 positions across 2 rows with 0.156" (3.96mm) pitch to ensure mechanical and electrical compatibility with existing PCB layouts and mating card edge assemblies.

Electrical and Contact Specifications: Gold-plated contact finish and solder termination are required to maintain signal integrity and assembly compatibility. Contact material composition must support the operating temperature range of -40°C to 105°C.

Mechanical Fit: Card thickness tolerance is a critical substitution parameter. The main part specifies 0.062" (1.57mm) fixed thickness. Substitute parts must accommodate this thickness within their specified tolerance range.

Environmental and Compliance Requirements: Both parts must maintain ROHS3 compliance, MSL rating of 1, and support the full operating temperature range to ensure regulatory and reliability equivalence.

The 307-012-520-201 qualifies as a direct substitute based on matching position count, row configuration, pitch spacing, gender, contact finish, termination method, operating temperature range, and compliance certifications. The substitute's card thickness tolerance of 0.054" ~ 0.070" (1.37mm ~ 1.78mm) encompasses the main part's 0.062" (1.57mm) specification.

Parameter Comparison

Engineering Selection Recommendations

The 307-012-520-201 is the qualified substitute for the obsolete 307-012-526-201. Selection is based on the following engineering criteria:

Compliance Equivalence: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy system support.

Mechanical Compatibility: The substitute's card thickness tolerance range of 0.054" ~ 0.070" (1.37mm ~ 1.78mm) fully encompasses the main part's 0.062" (1.57mm) specification, confirming mechanical fit with existing edge card assemblies.

Electrical Performance: Matching pitch, position count, contact finish, and operating temperature range ensure electrical performance equivalence. Both parts support the same thermal operating envelope from -40°C to 105°C.

Product Status Advantage: The substitute is classified as active product status, providing ongoing availability and manufacturing support compared to the obsolete main part. This status change supports long-term supply chain continuity.

Moisture Sensitivity: Both parts carry MSL rating 1 (unlimited), indicating no moisture sensitivity constraints for storage, handling, or assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 307-012-520-201 be used as a direct replacement for the 307-012-526-201 in existing assemblies?

A: Yes. The substitute maintains identical position count, row configuration, pitch spacing, contact finish, termination method, and operating temperature range. The substitute's card thickness tolerance encompasses the main part's specification, confirming mechanical and electrical compatibility.

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

A: The main part specifies fixed 0.062" (1.57mm) thickness, while the substitute specifies a tolerance range of 0.054" ~ 0.070" (1.37mm ~ 1.78mm). This tolerance range includes the main part's thickness, ensuring the substitute will function correctly with edge cards designed for the original part.

Q: Are there compliance or environmental differences between these parts?

A: No. Both parts are ROHS3 compliant, carry MSL rating 1, and support the identical operating temperature range of -40°C to 105°C. Compliance and environmental specifications are equivalent.

Q: Why is the main part classified as obsolete?

A: Product status reflects manufacturer production and support status. The obsolete classification indicates the 307-012-526-201 is no longer in active production. The 307-012-520-201 provides equivalent functionality with active product status and ongoing availability.

Q: Are there any packaging differences to consider?

A: The main part packaging is not specified in the available data. The substitute is supplied in bulk packaging. Packaging format should be confirmed with procurement requirements for your specific application.

Q: What contact material differences exist between these parts?

A: The main part specifies copper, nickel, and tin alloy contact material. The substitute specifies copper alloy contact material. Both maintain gold plating finish. The substitute provides contact finish thickness specification of 10.0µin (0.25µm), which was not specified for the main part.