Amphenol ICC 77313-124-28 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77313-124-28 is a vertical breakaway header connector with 28 positions at 0.100" (2.54mm) pitch, designed for through-hole board-to-board or cable applications. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production requirements. The connector features unshrouded male pins with gold-plated mating contacts and tin-plated posts, suitable for applications requiring reliable solder termination and push-pull fastening.

Substiute Parts

77313-124-28

Amphenol ICC (FCI)In Stock: 105677313-124-28 Datasheet

Current PartRFQ

77313-124-28LF

Amphenol ICC (FCI)In Stock: 72077313-124-28LF Datasheet

DirectRFQ

EW-14-09-L-D-235

Samtec Inc.In Stock: 1000EW-14-09-L-D-235 Datasheet

MFR RecommendedRFQ

HW-14-07-G-D-200-055

Samtec Inc.In Stock: 1054HW-14-07-G-D-200-055 Datasheet

MFR RecommendedRFQ

M20-9761442

Harwin Inc.In Stock: 988M20-9761442 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 77313-124-28 is determined by strict equivalence across the following critical parameters:

• 28-position configuration with 2-row layout
• 0.100" (2.54mm) pitch and row spacing
• Male pin contact type
• Through-hole solder termination
• Gold mating contact finish with tin post finish
• Unshrouded header design
• Push-pull fastening mechanism
• UL94 V-0 flammability rating

Substitute parts must maintain identical electrical and mechanical interfaces to ensure direct replacement capability. Variations in contact length, overall dimensions, or material composition are noted where they occur, as these may affect board layout and mechanical fit.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Amphenol ICC Series): The 77313-124-28LF is the direct active equivalent from Amphenol ICC. It maintains identical electrical and mechanical specifications to the obsolete 77313-124-28 while offering RoHS compliance and active product status. This part is recommended for designs requiring exact dimensional compatibility and proven form-fit-function equivalence.

Cross-Manufacturer Alternatives: The Harwin M20-9761442 provides functional equivalence with identical pitch, position count, and row configuration. Contact length variations (0.228" mating vs. 0.266" on the original) require PCB layout verification. This part offers ROHS3 compliance and active status with 3A per contact current rating.

The Samtec EW-14-09-L-D-235 and HW-14-07-G-D-200-055 are stackable header variants from the Flex Stack series. These parts maintain the 28-position, 2.54mm pitch configuration but feature significantly different overall contact lengths and stack heights. Selection of these parts requires confirmation that board-to-board spacing and mating interface geometry are compatible with the application.

Compliance Considerations: All active substitute parts listed are RoHS compliant, addressing regulatory requirements that may not apply to the obsolete original part. The 77313-124-28LF and M20-9761442 both maintain UL94 V-0 flammability ratings consistent with the original specification.

Frequently Asked Questions (FAQ)

Q: Can the 77313-124-28LF be used as a direct drop-in replacement for the 77313-124-28? A: Yes. The 77313-124-28LF maintains identical pitch (0.100"), position count (28), row configuration (2 rows), contact type (male pin), and overall contact length (0.480"). The primary difference is RoHS compliance status and active product availability.

Q: What is the key difference between the Amphenol and Harwin substitutes? A: Both maintain the 28-position, 2.54mm pitch configuration and solder termination. The Harwin M20-9761442 has a shorter mating contact length (0.228" vs. 0.266"), which may affect board-to-board spacing. Verify PCB layout compatibility before selection.

Q: Are the Samtec Flex Stack connectors (EW-14-09-L-D-235 and HW-14-07-G-D-200-055) compatible with the original 77313-124-28? A: These parts share the 28-position, 2.54mm pitch specification but feature different overall contact lengths and stack heights. The EW-14-09-L-D-235 has an overall pin length of 0.730", while the HW-14-07-G-D-200-055 is 0.430". Compatibility depends on specific board-to-board spacing and mating interface requirements in your application. Board layout verification is required.

Q: What does the "LF" suffix in 77313-124-28LF indicate? A: The "LF" designation indicates lead-free composition, which is associated with RoHS compliance. This part is suitable for applications requiring RoHS-compliant components.

Q: Are all substitute parts rated for the same current and voltage? A: The 77313-124-28LF and M20-9761442 are both rated at 3A per contact. Voltage and current ratings for the Samtec parts are not specified in the available data. Consult manufacturer datasheets for complete electrical specifications before final selection.

Q: What is the difference between the two Samtec options? A: Both EW-14-09-L-D-235 and HW-14-07-G-D-200-055 are 28-position, 2.54mm pitch headers from the Samtec Flex Stack series. The EW-14-09-L-D-235 has a stack height of 0.235" with a 0.330" tail length, while the HW-14-07-G-D-200-055 has a stack height of 0.200" with a 0.055" tail length. Selection depends on available board space and connector positioning requirements.