Amphenol ICC 77311-162-20LF Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77311-162-20LF is an active rectangular connector header designed for through-hole board-to-board applications. This unshrouded, 20-position vertical header operates at 0.100" (2.54mm) pitch and is manufactured from phosphor bronze with gold or gold GXT™ mating contact finish. The component is RoHS compliant and rated for -65°C to 125°C operation. Substitute parts are necessary when primary inventory is unavailable, when alternative contact finish specifications are required, or when different insulation material properties are needed for specific application environments.

Substiute Parts

77311-162-20LF

Amphenol ICC (FCI)In Stock: 66077311-162-20LF Datasheet

Current PartRFQ

TSW-120-15-G-S

Samtec Inc.In Stock: 1265TSW-120-15-G-S Datasheet

MFR RecommendedRFQ

TSW-120-15-S-S

Samtec Inc.In Stock: 1119TSW-120-15-S-S Datasheet

MFR RecommendedRFQ

TSW-120-15-T-S

Samtec Inc.In Stock: 949TSW-120-15-T-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 77311-162-20LF is determined by the following critical parameters: connector type (header), contact type (male pin), number of positions (20), mating pitch (0.100"/2.54mm), number of rows (1), mounting type (through hole), termination method (solder), contact material (phosphor bronze), and flammability rating (UL94 V-0). All three substitute parts—TSW-120-15-G-S, TSW-120-15-S-S, and TSW-120-15-T-S—satisfy these core electrical and mechanical requirements. Variations exist in contact finish specifications (gold, tin, or mixed finishes), insulation material (PBT versus thermoplastic), and maximum operating temperature, which determine suitability for specific application contexts.

Parameter Comparison

Engineering Selection Recommendations

All three Samtec TSW series substitutes maintain active product status and satisfy core mechanical and electrical compatibility requirements with the 77311-162-20LF. Selection between substitutes depends on specific application constraints:

TSW-120-15-G-S provides full gold plating on both mating and post contacts, offering enhanced corrosion resistance and is suitable for applications requiring uniform contact finish specifications.

TSW-120-15-S-S combines gold mating contact finish with tin post finish, matching the original part's mixed finish approach and providing a direct functional equivalent.

TSW-120-15-T-S features tin mating and post finishes, suitable for cost-sensitive applications where the reduced maximum operating temperature of -55°C to 105°C remains within system requirements.

All substitutes are ROHS3 compliant and carry UL94 V-0 flammability certification. The primary consideration is operating temperature range: the original part supports -65°C to 125°C, while Samtec substitutes support -55°C to 125°C (TSW-120-15-G-S and TSW-120-15-S-S) or -55°C to 105°C (TSW-120-15-T-S). Applications requiring operation below -55°C or above 105°C must use the original Amphenol ICC part or TSW-120-15-G-S/TSW-120-15-S-S variants.

Frequently Asked Questions (FAQ)

Q: Can TSW-120-15-G-S, TSW-120-15-S-S, and TSW-120-15-T-S be used interchangeably with the 77311-162-20LF?

A: All three Samtec parts are mechanically and electrically compatible as direct substitutes. Interchangeability depends on application-specific requirements for contact finish, operating temperature range, and insulation material properties. The TSW-120-15-S-S most closely mirrors the original part's mixed finish specification.

Q: What is the difference between the three Samtec substitute options?

A: The primary differences are contact finish specifications and maximum operating temperature. TSW-120-15-G-S uses gold on both mating and post contacts. TSW-120-15-S-S uses gold mating with tin post finish. TSW-120-15-T-S uses tin on both surfaces and has a reduced maximum operating temperature of 105°C versus 125°C for the other variants.

Q: Does the insulation material change affect performance?

A: The original part uses thermoplastic insulation, while all Samtec substitutes use polybutylene terephthalate (PBT). Both materials meet UL94 V-0 flammability requirements and maintain MSL 1 moisture sensitivity ratings. PBT offers improved dimensional stability and chemical resistance in certain industrial environments.

Q: Are there temperature limitations when substituting?

A: The original 77311-162-20LF operates from -65°C to 125°C. TSW-120-15-G-S and TSW-120-15-S-S support -55°C to 125°C, while TSW-120-15-T-S supports -55°C to 105°C. Applications requiring operation below -55°C or above 105°C must verify compatibility with the selected substitute.

Q: What is the significance of REACH status differences?

A: The original part is REACH Affected, while all Samtec substitutes are REACH Unaffected. This indicates different regulatory compliance pathways. For applications subject to REACH regulations, the REACH Unaffected status of Samtec parts may simplify compliance documentation.