Amphenol ICC 79257-572 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 79257-572 is a rectangular connector header featuring a right-angle, through-hole configuration with 72 positions at 2.54mm pitch. This BERGSTIK® II series component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The connector is designed for board-to-board applications with solder termination and push-pull fastening.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	72
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold or Gold, GXT™
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 79257-572 is determined by strict alignment with the following critical parameters:

Connector type: Header
Contact type: Male pin
Position count: 72 positions
Row configuration: 2 rows
Mating pitch: 0.100" (2.54mm)
Row spacing: 0.100" (2.54mm)
Mounting: Through hole, right angle
Termination: Solder
Fastening: Push-pull
Shrouding: Unshrouded
Style: Board to board or board to cable
Flammability: UL94 V-0

The 3M 2372-5121-TG meets all critical substitution criteria. This part maintains functional and mechanical compatibility while offering active product status and improved availability.

Parameter Comparison

Parameter	79257-572 (Amphenol ICC)	2372-5121-TG (3M)
Manufacturer	Amphenol ICC (FCI)	3M
Series	BERGSTIK® II	2300
Product Status	Obsolete	Active
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	72	72
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.120" (3.05mm)	0.110" (2.79mm)
Insulation Height	0.190" (4.83mm)	0.242" (6.14mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold or Gold, GXT™	Gold
Contact Material	Phosphor Bronze	Copper Alloy
Shrouding	Unshrouded	Unshrouded
Style	Board to Board	Board to Board or Cable
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
Operating Temperature	Not specified	-55°C ~ 105°C
Current Rating (Amps)	Not specified	3A
RoHS Status	RoHS non-compliant	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The 3M 2372-5121-TG is the qualified substitute for the obsolete Amphenol ICC 79257-572. Selection is based on the following factors:

Active product status ensures ongoing availability and supply chain continuity
All critical mechanical and electrical parameters align with the original specification
Both parts maintain UL94 V-0 flammability compliance
Both parts carry MSL 1 (Unlimited) moisture sensitivity classification
Both parts share identical ECCN and HTSUS classifications
The 3M part provides specified operating temperature range (-55°C ~ 105°C) and current rating (3A), offering additional design documentation
Minor dimensional variations in contact post length (0.120" vs 0.110") and insulation height (0.190" vs 0.242") do not affect functional compatibility in standard board-to-board applications

Frequently Asked Questions (FAQ)

Q: Can the 3M 2372-5121-TG directly replace the Amphenol ICC 79257-572 in existing designs?

A: Yes. Both connectors share identical mating pitch (2.54mm), row spacing (2.54mm), position count (72), mounting configuration (through-hole right angle), and termination method (solder). The connectors are mechanically and electrically compatible for board-to-board applications.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer, series designation, and product status. The 3M part is active while the Amphenol ICC part is obsolete. Minor dimensional variations exist in contact post length and insulation height. The 3M part includes specified operating temperature and current rating parameters.

Q: Are there any compliance or certification differences?

A: Both parts carry identical UL94 V-0 flammability ratings, MSL 1 moisture sensitivity levels, and ECCN/HTSUS classifications. Both are RoHS non-compliant. No compliance barriers exist to substitution.

Q: What is the impact of the different contact post lengths?

A: The 3M part has a contact post length of 0.110" (2.79mm) compared to 0.120" (3.05mm) for the Amphenol ICC part. This 0.010" difference is within standard PCB design tolerances and does not affect solder joint formation or mechanical retention in typical through-hole applications.

Q: Does the increased insulation height of the 3M part affect board layout?

A: The 3M part has an insulation height of 0.242" (6.14mm) versus 0.190" (4.83mm) for the Amphenol ICC part. This 0.052" increase may require verification of clearance to adjacent components or board features in space-constrained designs, but does not affect electrical performance.

Q: Are there alternative substitutes listed for this connector?

A: The 3M 2372-5121-TG documentation references additional cross-references: 3-826953-6 and 79257-272HLF. Compatibility with these parts should be verified against specific application requirements.

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