50-10A-20 Equivalent & Substitute Parts

Part Overview

The Cinch Connectivity Solutions 50-10A-20 is a 10-position female card edge connector with single edge configuration, 0.156" (3.96mm) pitch, and gold-plated bifurcated semi-bellows contacts. The connector features panel mounting with solder eyelet termination and operates across -65°C to 105°C. This part is currently in active production status with 838 units in stock. Identifying substitute parts becomes necessary for design flexibility, supply chain diversification, and maintenance of legacy systems where alternative configurations or manufacturers may provide equivalent or enhanced functionality.

Substiute Parts

50-10A-20

Cinch Connectivity SolutionsIn Stock: 91650-10A-20 Datasheet

Current PartRFQ

306-010-500-102

Mercury United Electronics, Inc.In Stock: 1408306-010-500-102 Datasheet

DirectRFQ

356-010-500-102

Mercury United Electronics, Inc.In Stock: 1104356-010-500-102 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 50-10A-20 connector is governed by the following key electrical and mechanical compatibility parameters: gender (female), pitch (0.156" / 3.96mm), card thickness accommodation (1.37mm ~ 1.80mm), contact finish (gold-plated), operating temperature range (-65°C to 105°C minimum), and panel mount configuration with solder eyelet termination.

The substitute parts identified—Mercury United Electronics 306-010-500-102 and 356-010-500-102—share the same pitch specification, female gender, gold contact finish, panel mount design, and solder eyelet termination. However, these substitutes feature a dual-edge (20-position) configuration instead of the single-edge (10-position) format of the main part. This dual-edge design accommodates a higher-density application while maintaining the same contact pitch and mounting interface. The card thickness range supported by substitutes (0.054" ~ 0.070" / 1.37mm ~ 1.78mm) provides compatibility with the primary part's thickness specifications.

A notable difference between the main part and substitutes is the contact type: the 50-10A-20 uses bifurcated semi-bellows contacts (brass with gold plating), while the substitutes employ cantilever-style contacts (copper alloy with gold plating). Both contact geometries provide electrical continuity and mechanical retention on card edges. The operating temperature range for substitutes (-40°C to 105°C) covers the upper end of the main part's range but does not extend to the lower -65°C limit.

Parameter Comparison

Engineering Selection Recommendations

The 50-10A-20 main part is RoHS Compliant, while both substitute parts achieve the higher ROHS3 Compliant specification. All three parts maintain MSL 1 (Unlimited) moisture sensitivity rating and Active product status, indicating sustained manufacturing support and availability.

When selecting between the main part and substitutes, consider the dual-edge configuration of Mercury United Electronics parts. These substitutes provide 20 total positions (10 per edge) versus the 10 single-edge positions of the Cinch part. This enhanced positional capacity makes substitutes suitable for applications requiring higher contact density or dual-sided card edge connectivity. However, the substitutes operate to -40°C minimum versus the main part's -65°C limit, necessitating design temperature verification for cryogenic or extreme cold environment applications.

The substitutes employ copper alloy contacts with cantilever geometry rather than the bifurcated semi-bellows design of the main part. Polyester Thermoplastic insulation in the substitutes differs from the glass-filled polyester in the main part. The 306-010-500-102 maintains the green color of the main part, while the 356-010-500-102 is available in black. All parts share identical pitch (0.156"), contact finish (gold, 10.0µin), termination method (solder eyelet), mounting style (panel mount), and flange geometry specifications, ensuring mechanical and electrical interchangeability within the defined operating envelope.

Frequently Asked Questions (FAQ)

Q: Can the Mercury United Electronics 306-010-500-102 or 356-010-500-102 be directly substituted for the Cinch 50-10A-20?

A: Direct substitution is mechanically and electrically feasible if your application accommodates dual-edge configuration and does not require operation below -40°C. The shared 0.156" pitch, gold contact finish, panel mount design, and compatible card thickness range (1.37mm ~ 1.78mm) ensure interface compatibility. The dual-edge format provides additional contact positions that may exceed original design requirements.

Q: What is the primary difference between the main part and the substitute parts?

A: The primary structural difference is the card edge configuration: the 50-10A-20 is a single-edge 10-position connector, while the Mercury substitutes are dual-edge 20-position connectors with the same pitch and footprint. Contact type differs as well: the main part uses bifurcated semi-bellows contacts, while substitutes employ cantilever contacts. Secondary differences include the contact base material (brass versus copper alloy), insulation material composition, and operating temperature lower limit (-65°C versus -40°C).

Q: Are there RoHS and environmental compliance differences between these parts?

A: The main part is RoHS Compliant, while both substitutes are ROHS3 Compliant, representing a higher compliance specification. All three parts maintain identical MSL 1 (Unlimited) moisture sensitivity ratings. The substitutes additionally provide REACH Unaffected status. These differences indicate that substitutes meet more recent environmental standards.

Q: What color options are available in the substitute parts?

A: The Mercury 306-010-500-102 is available in green, matching the main part color. The Mercury 356-010-500-102 is available in black. Both substitutes maintain identical electrical and mechanical specifications regardless of color selection.

Q: What is the operating temperature consideration for substitution?

A: The main part operates from -65°C to 105°C. The Mercury substitute parts operate from -40°C to 105°C. Applications requiring operation below -40°C must retain the original 50-10A-20 part or identify alternative sources with extended low-temperature ratings.

Q: Do these connectors share the same mounting and termination specifications?

A: Yes. All three parts employ panel mount configuration with solder eyelet termination and identical flange geometry (flush mount, top opening, unthreaded, 0.128" / 3.25mm dia). They are suitable for identical PCB footprints and soldering processes.