Amphenol ICC 77319-803-20 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77319-803-20 is a through-hole, right-angle rectangular connector header with 20 positions at 0.100" (2.54mm) pitch, designed for board-to-board applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity. The BERGSTIK® series header features unshrouded, breakaway male pin contacts with gold-plated mating surfaces and solder termination.

Substiute Parts

77319-803-20

Amphenol ICC (FCI)In Stock: 83577319-803-20 Datasheet

Current PartRFQ

77319-803-20LF

Amphenol ICC (FCI)In Stock: 95877319-803-20LF Datasheet

DirectRFQ

2320-5221-TG

3MIn Stock: 10462320-5221-TG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 77319-803-20 is determined by strict alignment with the following core parameters:

• Connector type: Header with breakaway capability
• Contact configuration: Male pin, 20 positions in 2 rows
• Pitch specification: 0.100" (2.54mm) mating pitch and row spacing
• Mounting method: Through-hole, right-angle orientation
• Termination: Solder connection
• Contact finish (mating surface): Gold plating
• Insulation material: Thermoplastic composition
• Flammability compliance: UL94 V-0 rating

Substitute parts must maintain these electrical and mechanical parameters to ensure form, fit, and functional compatibility in existing board designs and assembly processes.

Parameter Comparison

Engineering Selection Recommendations

77319-803-20LF (Direct Amphenol ICC Substitute)

The 77319-803-20LF is the primary equivalent for the obsolete 77319-803-20. Both components share identical mechanical and electrical specifications, including pitch, position count, contact geometry, and mating surface finish. The 77319-803-20LF maintains active product status and is available in bulk packaging. The primary distinction is RoHS compliance: the 77319-803-20LF is RoHS compliant, while the original part is non-compliant. This substitution is direct for applications where RoHS compliance is required or preferred.

2320-5221-TG (3M Alternative)

The 3M 2320-5221-TG provides functional equivalence with minor dimensional variations. Contact post length differs by 0.005" (0.13mm) and insulation height by 0.006" (0.16mm), which remain within typical PCB design tolerances for through-hole applications. The 2320-5221-TG uses glass-filled thermoplastic insulation and copper alloy contacts instead of phosphor bronze. This part is active and available in higher inventory. Selection of this alternative is appropriate when 3M component standardization is preferred or when the dimensional variations are acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can the 77319-803-20LF directly replace the obsolete 77319-803-20 without PCB modification?

A: Yes. The 77319-803-20LF maintains identical pitch (0.100"), position count (20), row spacing (0.100"), contact length (0.318" mating), and insulation height (0.248"). No PCB footprint changes are required.

Q: What is the significance of the "LF" suffix in 77319-803-20LF?

A: The "LF" designation indicates lead-free compliance and RoHS compliance status. The original 77319-803-20 contains lead-based finishes; the 77319-803-20LF uses lead-free post finishes while maintaining the same mating surface gold plating.

Q: Are there dimensional differences between the Amphenol ICC and 3M alternatives?

A: Yes. The 3M 2320-5221-TG has a contact post length of 0.110" (2.79mm) versus 0.115" (2.92mm) for the Amphenol parts, and insulation height of 0.242" (6.14mm) versus 0.248" (6.30mm). These differences are minor and typically accommodated by standard PCB design tolerances for through-hole connectors.

Q: Which substitute should be selected for new designs?

A: For new designs requiring Amphenol ICC compatibility, use 77319-803-20LF. For designs open to multi-source qualification, the 3M 2320-5221-TG is a viable alternative with active product status and higher inventory availability.

Q: What is the packaging difference between the main part and substitutes?

A: The original 77319-803-20 packaging is not specified. The 77319-803-20LF is supplied in bulk packaging. The 3M 2320-5221-TG packaging is not specified. Confirm packaging requirements with your procurement department.

Q: Are operating temperature ranges specified for these connectors?

A: The original 77319-803-20 does not specify an operating temperature range. The 77319-803-20LF operates from -65°C to 130°C. The 3M 2320-5221-TG operates from -55°C to 105°C. Verify temperature requirements for your application.