50-12SN-5 Card Edge Connector Equivalent & Substitute Parts

Part Overview

The 50-12SN-5 is a 24-position female card edge connector manufactured by Cinch Connectivity Solutions. This dual-edge connector features a 0.156" (3.96mm) pitch and gold-plated bifurcated semi-bellows contacts rated for -65°C to 105°C operation. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

50-12SN-5

Cinch Connectivity SolutionsIn Stock: 126350-12SN-5 Datasheet

Current PartRFQ

356-012-520-102

Mercury United Electronics, Inc.In Stock: 887356-012-520-102 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 50-12SN-5 is determined by the following critical parameters:

• Position Count & Pitch: 24 positions at 0.156" (3.96mm) spacing
• Electrical Configuration: Dual-edge, 2-row arrangement with female gender
• Card Thickness Compatibility: Acceptable range 0.054" ~ 0.071" (1.37mm ~ 1.80mm)
• Contact Finish: Gold plating at 10.0µin (0.25µm) thickness
• Termination Method: Solder through-hole mounting
• Environmental Rating: Operating temperature and moisture sensitivity level

The substitute part 356-012-520-102 meets these core substitution criteria with compatible electrical and mechanical specifications. Variations in contact type (bifurcated semi-bellows vs. cantilever), read-out configuration (single vs. dual), and operating temperature range represent acceptable engineering trade-offs within the connector category.

Parameter Comparison

Engineering Selection Recommendations

The 356-012-520-102 from Mercury United Electronics, Inc. is an active product with current manufacturing status, making it suitable for applications requiring the 50-12SN-5 connector. Both parts maintain RoHS compliance and identical moisture sensitivity ratings.

Selection considerations based on provided specifications:

• Product Status: The substitute part is active and in production, ensuring long-term availability compared to the obsolete 50-12SN-5.
• Compliance: Both parts meet RoHS requirements. The substitute achieves ROHS3 compliance, representing current regulatory alignment.
• Temperature Range: The substitute operates from -40°C to 105°C, which is narrower than the original -65°C to 105°C range. Applications requiring operation below -40°C require verification against system requirements.
• Contact Type Variation: The substitute uses cantilever contacts instead of bifurcated semi-bellows. Both contact types are standard in card edge connector design and provide equivalent electrical performance within the specified pitch and position configuration.
• Card Thickness Tolerance: The substitute accepts cards from 0.054" to 0.070" (1.37mm to 1.78mm), which overlaps the original specification of 0.054" to 0.071" (1.37mm to 1.80mm). Verify card thickness for applications at the upper tolerance limit.

Frequently Asked Questions (FAQ)

Q: Can the 356-012-520-102 directly replace the 50-12SN-5 in existing designs?

A: Yes, for applications operating within -40°C to 105°C. The electrical and mechanical specifications are compatible, including position count, pitch, card thickness tolerance, and solder termination. Applications requiring operation below -40°C require design review.

Q: What is the difference between bifurcated semi-bellows and cantilever contact types?

A: Both contact types provide reliable electrical connection in card edge connectors. Bifurcated semi-bellows contacts use a split design with spring action, while cantilever contacts use a single-beam spring design. For the specified 0.156" pitch and 24-position configuration, both types deliver equivalent performance.

Q: Are there packaging differences between these parts?

A: The 50-12SN-5 is listed with unspecified packaging, while the 356-012-520-102 is supplied in bulk packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: Does the narrower operating temperature range of the substitute affect compatibility?

A: The substitute operates from -40°C to 105°C versus the original -65°C to 105°C. If your application requires operation below -40°C, the substitute is not suitable. For standard industrial and commercial temperature ranges, the substitute is fully compatible.

Q: Are both parts RoHS compliant?

A: Yes. The 50-12SN-5 is RoHS Compliant, and the 356-012-520-102 is ROHS3 Compliant. Both meet current regulatory requirements for restricted substances.

Q: What is the card thickness tolerance for each connector?

A: The 50-12SN-5 accepts cards from 0.054" to 0.071" (1.37mm to 1.80mm). The 356-012-520-102 accepts cards from 0.054" to 0.070" (1.37mm to 1.78mm). Verify your card thickness falls within both ranges for interchangeability.