Amphenol ICC 77313-124-50 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77313-124-50 is a vertical rectangular connector header with 50 positions at 2.54mm pitch, designed for through-hole board-to-board or cable applications. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility. The BERGSTIK® series header features unshrouded, breakaway design with solder termination and push-pull fastening.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	50
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 77313-124-50 is determined by strict adherence to the following core parameters:

Pitch - Mating: 0.100" (2.54mm) - exact match required
Number of Positions: 50 - exact match required
Number of Rows: 2 - exact match required
Row Spacing - Mating: 0.100" (2.54mm) - exact match required
Contact Type: Male Pin - exact match required
Mounting Type: Through Hole - exact match required
Termination: Solder - exact match required
Fastening Type: Push-Pull - exact match required
Shrouding: Unshrouded - exact match required

All identified substitute parts meet these mandatory criteria. Variations in contact length, contact finish, insulation material, and operating temperature ranges are permitted within the scope of functional equivalence for this connector category.

Parameter Comparison

Parameter	77313-124-50 (Main)	77313-124-50LF	2-87215-5	2-826632-5	7-146252-5	929665-01-25-I	BBD-125-T-B
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP	3M	Samtec Inc.
Series	BERGSTIK®	BERGSTIK®	AMPMODU Mod II	AMPMODU Mod II	AMPMODU Mod II	929	BBD
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	50	50	50	50	50	50	50
Number of Rows	2	2	2	2	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	Square	Square	Circular	Square	Square	Square	Circular
Operating Temperature	Not specified	-65°C ~ 130°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 125°C
Current Rating (Amps)	Not specified	3A per Contact	3A	5A	3A	2.5A	Not specified
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	Not specified
RoHS Status	Non-compliant	Compliant	Compliant	Compliant	Compliant	Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: 77313-124-50LF

The 77313-124-50LF is the direct manufacturer equivalent from Amphenol ICC (FCI), maintaining identical electrical and mechanical specifications to the obsolete 77313-124-50. This part is active, RoHS compliant, and offers the widest operating temperature range (-65°C ~ 130°C). Selection of this part eliminates any design integration concerns and provides the highest compatibility assurance.

Secondary Recommendations: TE Connectivity AMP Connectors Series

The 2-87215-5, 2-826632-5, and 7-146252-5 from TE Connectivity AMP Connectors (AMPMODU Mod II series) are active alternatives meeting all core substitution criteria. These parts are RoHS compliant and provide operating temperature ranges of -65°C ~ 105°C. The 2-826632-5 offers the highest current rating at 5A per contact. All three parts are suitable for applications where the main part specifications are met.

Tertiary Recommendations: Alternative Manufacturers

The 929665-01-25-I (3M, 929 series) and BBD-125-T-B (Samtec Inc., BBD series) are functionally equivalent alternatives from established connector manufacturers. Both are active products with RoHS compliance. The BBD-125-T-B operates across an extended temperature range (-55°C ~ 125°C) and is packaged in tube format.

Frequently Asked Questions (FAQ)

Q: Can the 77313-124-50LF be used as a direct replacement for the obsolete 77313-124-50?

A: Yes. The 77313-124-50LF is the active equivalent from the same manufacturer (Amphenol ICC) and series (BERGSTIK®), with identical pitch, position count, row configuration, and core electrical specifications. The primary difference is RoHS compliance status and extended operating temperature range.

Q: What are the key differences between the Amphenol ICC and TE Connectivity alternatives?

A: All alternatives maintain the required 2.54mm pitch, 50-position, 2-row configuration. Differences include contact material composition, contact finish specifications, insulation material type, and operating temperature ranges. The TE Connectivity 2-826632-5 provides the highest current rating at 5A per contact.

Q: Are there mechanical compatibility concerns when substituting between manufacturers?

A: All listed substitutes maintain identical mating pitch (0.100" / 2.54mm), row spacing (0.100" / 2.54mm), and push-pull fastening type. Variations in overall contact length and insulation height exist but do not affect board-level compatibility for standard through-hole applications.

Q: Which substitute part offers the best compliance profile?

A: All active substitute parts listed are RoHS compliant. The 77313-124-50LF, 2-87215-5, 2-826632-5, 7-146252-5, and 929665-01-25-I carry RoHS Compliant or ROHS3 Compliant status. The original 77313-124-50 is RoHS non-compliant.

Q: What packaging options are available for these substitute parts?

A: The 77313-124-50LF, 2-87215-5, 2-826632-5, 7-146252-5, and 929665-01-25-I are supplied in bulk packaging. The BBD-125-T-B is supplied in tube packaging. Packaging selection may affect procurement lead times and handling requirements.

Q: Can the BBD-125-T-B from Samtec be used in place of the Amphenol ICC part?

A: Yes, the BBD-125-T-B meets all core substitution criteria: 2.54mm pitch, 50 positions, 2 rows, through-hole mounting, solder termination, and push-pull fastening. The primary distinction is the circular contact shape versus the square contact shape of the original part, which does not affect electrical or mechanical compatibility in standard applications.

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