Amphenol ICC 77313-124-24 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77313-124-24 is a vertical header connector with 24 positions at 2.54mm pitch, designed for through-hole board-to-board or cable applications. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support. The connector features a breakaway design with unshrouded configuration and solder termination, suitable for applications requiring reliable interconnection in standard 0.100" pitch layouts.

Key Parameters

Parameter	Value
Pitch - Mating	0.100" (2.54mm)
Number of Positions	24
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Connector Type	Header, Breakaway
Contact Type	Male Pin
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Contact Shape	Square
Insulation Material	Thermoplastic
Material Flammability Rating	UL94 V-0
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 77313-124-24 is determined by strict alignment of electrical and mechanical parameters. The critical substitution criteria are:

Mating pitch of 0.100" (2.54mm)
24-position configuration with 2-row layout
0.100" row spacing
Male pin contact type
Through-hole solder termination
Push-pull fastening mechanism
Unshrouded design
UL94 V-0 flammability rating

Substitute parts must maintain these core parameters to ensure mechanical and electrical compatibility. Variations in contact geometry, insulation height, overall contact length, and contact finish specifications are acceptable provided the mating interface remains compatible.

Parameter Comparison

Parameter	77313-124-24	77313-124-24LF	1-826632-2	BBD-112-G-A	BBD-112-T-A	BBD-112-T-B	M20-9721245
Manufacturer	Amphenol ICC	Amphenol ICC	TE Connectivity	Samtec Inc.	Samtec Inc.	Samtec Inc.	Harwin Inc.
Series	BERGSTIK®	BERGSTIK®	AMPMODU Mod II	BBD	BBD	BBD	M20
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	24	24	24	24	24	24	24
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)
Connector Type	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header	Header	Header	Header, Cuttable
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	Square	Circular	Circular	Circular	Square
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	-	-	-	UL94 V-0
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Operating Temperature	-	-65°C ~ 130°C	-65°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C
Current Rating (Amps)	-	3A per Contact	5A	-	-	-	3A per Contact

Engineering Selection Recommendations

The 77313-124-24LF is the direct manufacturer equivalent from Amphenol ICC, maintaining the BERGSTIK® series designation with active product status and RoHS compliance. This part is the primary substitute for new designs requiring the original form factor and specifications.

For applications requiring alternative manufacturers, the following options are available:

1-826632-2 (TE Connectivity AMPMODU Mod II) provides an active alternative with higher current rating (5A) and extended temperature range to -65°C. This part maintains UL94 V-0 compliance and ROHS3 certification.

BBD-112-G-A and BBD-112-T-A (Samtec BBD series) offer active alternatives with circular contact geometry and extended temperature range (-55°C to 125°C). These parts feature ROHS3 compliance but lack specified flammability ratings.

BBD-112-T-B (Samtec BBD series) provides an extended insulation height variant (0.335") suitable for applications requiring increased mating stack height, with identical electrical and thermal specifications to BBD-112-T-A.

M20-9721245 (Harwin M20 series) delivers an active cuttable header option with 3A per contact rating and UL94 V-0 compliance. This part supports modular configuration through individual position cutting.

All substitute parts maintain the critical 0.100" (2.54mm) pitch, 24-position, 2-row configuration with male pin through-hole solder termination and push-pull fastening required for mechanical and electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 77313-124-24 be directly replaced with 77313-124-24LF?

A: Yes. The 77313-124-24LF is the direct Amphenol ICC equivalent with identical mechanical and electrical specifications. The primary difference is product status (active vs. obsolete) and RoHS compliance. Both parts share the BERGSTIK® series designation and maintain full compatibility.

Q: What are the key differences between square and circular contact geometries in the substitute options?

A: The original 77313-124-24 and its direct equivalent 77313-124-24LF feature square contacts. Samtec BBD series alternatives (BBD-112-G-A, BBD-112-T-A, BBD-112-T-B) use circular contacts. Both geometries maintain the 0.100" (2.54mm) pitch and are mechanically compatible at the mating interface. Contact shape selection depends on application-specific requirements for contact pressure and wear characteristics.

Q: How do operating temperature ranges affect substitution?

A: The original 77313-124-24 does not specify an operating temperature range. Substitute parts provide defined ranges: 77313-124-24LF (-65°C to 130°C), 1-826632-2 (-65°C to 105°C), BBD series (-55°C to 125°C), and M20-9721245 (-40°C to 105°C). Selection should be based on application thermal requirements. Parts with wider temperature ranges provide greater design margin.

Q: What is the significance of the "LF" designation in 77313-124-24LF?

A: The "LF" suffix indicates lead-free compliance, reflecting RoHS directive adherence. This designation distinguishes the active production part from the obsolete original, which is RoHS non-compliant. For new designs, the LF variant is the standard choice.

Q: Are BBD-112-T-A and BBD-112-T-B interchangeable?

A: Both parts share identical electrical specifications and contact geometry. The primary difference is insulation height: BBD-112-T-A has 0.211" (5.35mm) height, while BBD-112-T-B has 0.335" (8.51mm) height. Selection depends on mated stacking height requirements. They are not directly interchangeable if specific stack height is a design constraint.

Q: What packaging options are available for these substitutes?

A: Packaging varies by manufacturer: 77313-124-24LF is supplied in bulk, 1-826632-2 in bulk, BBD series (BBD-112-G-A, BBD-112-T-A, BBD-112-T-B) in tube, and M20-9721245 in bulk. Packaging selection affects handling, storage, and automated assembly compatibility.

Q: Does the M20-9721245 "cuttable" feature affect compatibility?

A: The M20-9721245 cuttable design allows individual position separation for custom configurations. This feature does not affect standard 24-position compatibility. The part functions identically to non-cuttable alternatives when used as a complete 24-position header.

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