Amphenol ICC 68491-372 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 68491-372 is a rectangular connector header featuring 72 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing. This through-hole component is designed for board-to-board connections using solder termination and push-pull fastening. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility across electrical performance, mechanical dimensions, and mounting characteristics while meeting current compliance standards.

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
Termination	Solder
Fastening Type	Push-Pull
Style	Board to Board
Shrouding	Unshrouded
Operating Temperature Range	-65°C ~ 130°C
Material Flammability Rating	UL94 V-0
Current Rating	3A
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

Number of Positions: 72
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Fastening Type: Push-Pull
Style: Board to Board (or Board to Board or Cable)
Shrouding: Unshrouded

All identified substitute parts meet these critical parameters. Variations in contact finish, contact material, insulation material, and overall contact length are permissible within the scope of functional equivalence, provided mechanical and electrical compatibility is maintained. Compliance status and operating temperature ranges are documented for engineering selection purposes.

Parameter Comparison

Parameter	68491-372 (Amphenol ICC)	3-826632-6 (TE Connectivity)	3-826925-6 (TE Connectivity)	BBD-136-G-A (Samtec)	BBD-136-G-B (Samtec)	BBD-136-T-B (Samtec)	TSW-136-24-T-D (Samtec)
Manufacturer	Amphenol ICC (FCI)	TE Connectivity AMP	TE Connectivity AMP	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Series	BERGSTIK® II	AMPMODU Mod II	AMPMODU Mod II	BBD	BBD	BBD	TSW
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Number of Positions	72	72	72	72	72	72	72
Number of Rows	2	2	2	2	2	2	2
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)
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	Header, Breakaway	Header, Breakaway	Header	Header	Header	Header
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
Style	Board to Board	Board to Board or Cable	Board to Board or Cable	Board to Board	Board to Board	Board to Board	Board to Board or Cable
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Length - Mating	0.255" (6.48mm)	0.264" (6.70mm)	0.264" (6.70mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.265" (6.73mm)
Contact Length - Post	0.120" (3.05mm)	0.126" (3.20mm)	0.126" (3.20mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.115" (2.92mm)
Overall Contact Length	0.475" (12.07mm)	0.500" (12.70mm)	0.500" (12.70mm)	0.460" (11.68mm)	0.585" (14.86mm)	0.585" (14.86mm)	0.480" (12.19mm)
Insulation Height	0.100" (2.54mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.211" (5.35mm)	0.335" (8.51mm)	0.335" (8.51mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Circular	Circular	Circular	Square
Contact Finish - Mating	Gold or Gold, GXT™	Gold	Tin	Gold	Gold	Tin	Tin
Contact Material	Phosphor Bronze	Brass	Copper Alloy	Not specified	Not specified	Not specified	Phosphor Bronze
Insulation Material	Not specified	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polyester, Glass Filled	Polyester, Glass Filled	Polyester, Glass Filled	Polybutylene Terephthalate (PBT)
Operating Temperature Range	-65°C ~ 130°C	-65°C ~ 105°C	-65°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	Not specified	Not specified	Not specified	UL94 V-0
Current Rating	3A	5A	5A	Not specified	Not specified	Not specified	Not specified
RoHS Status	Non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging	Not specified	Bulk	Bulk	Tube	Tube	Tube	Bulk
Inventory Status	1135 Pcs New Original In Stock	1111 Pcs New Original In Stock	1053 Pcs New Original In Stock	787 Pcs New Original In Stock	1036 Pcs New Original In Stock	933 Pcs New Original In Stock	711 Pcs New Original In Stock

Engineering Selection Recommendations

All substitute parts listed maintain functional equivalence to the 68491-372 across critical mechanical and electrical parameters. Selection should be based on the following engineering criteria:

RoHS Compliance: The original 68491-372 is RoHS non-compliant. All substitute parts (3-826632-6, 3-826925-6, BBD-136-G-A, BBD-136-G-B, BBD-136-T-B, TSW-136-24-T-D) are ROHS3 compliant, making them suitable for applications requiring modern compliance standards.

Operating Temperature Range: The 68491-372 operates from -65°C to 130°C. Substitute parts operate within -55°C to 125°C (Samtec BBD and TSW series) or -65°C to 105°C (TE Connectivity AMPMODU series). Applications requiring the full -65°C to 130°C range should evaluate temperature-critical performance.

Current Rating: The 68491-372 is rated for 3A. TE Connectivity AMPMODU substitutes (3-826632-6, 3-826925-6) are rated for 5A, providing higher current capacity. Samtec BBD and TSW series do not specify current ratings.

Contact Finish Options: Gold-finished contacts (3-826632-6, BBD-136-G-A, BBD-136-G-B) provide corrosion resistance. Tin-finished contacts (3-826925-6, BBD-136-T-B, TSW-136-24-T-D) offer cost efficiency. Selection depends on environmental exposure and reliability requirements.

Mechanical Dimensions: Overall contact length and insulation height vary among substitutes. BBD-136-G-A and BBD-136-G-B feature circular contacts with greater insulation heights (0.211" and 0.335" respectively), differing from the square-contact design of the original part. TSW-136-24-T-D and TE Connectivity parts maintain closer dimensional alignment to the original.

Product Status: All substitute parts are active products with ongoing manufacturer support, ensuring long-term availability and technical documentation access.

Frequently Asked Questions (FAQ)

Q: Can I use BBD-136-G-A or BBD-136-G-B as direct replacements for the 68491-372?

A: BBD-136-G-A and BBD-136-G-B meet all critical position, pitch, and mounting parameters. However, they feature circular contacts versus the square contacts of the original part, and have significantly different insulation heights (0.211" and 0.335" versus 0.100"). These dimensional differences may affect board layout compatibility and mating force characteristics. Mechanical fit verification is required before implementation.

Q: What is the difference between 3-826632-6 and 3-826925-6?

A: Both are TE Connectivity AMPMODU Mod II 72-position headers with identical mechanical dimensions and operating specifications. The primary difference is contact finish: 3-826632-6 features gold-plated mating contacts with tin-plated posts, while 3-826925-6 features tin-plated mating contacts with tin-plated posts. Contact material also differs (brass versus copper alloy). Selection depends on corrosion resistance requirements and cost considerations.

Q: Why do some substitute parts have higher current ratings than the original?

A: TE Connectivity AMPMODU parts (3-826632-6, 3-826925-6) are rated for 5A versus the original 3A rating. This reflects differences in contact material, finish thickness, and design optimization. Higher current ratings do not require substitution; they indicate improved performance capability. Applications limited to 3A operation remain fully compatible.

Q: Are all substitute parts RoHS compliant?

A: Yes. All identified substitute parts are ROHS3 compliant, whereas the original 68491-372 is RoHS non-compliant. This compliance upgrade is beneficial for applications subject to RoHS regulations and modern supply chain requirements.

Q: What packaging options are available?

A: TE Connectivity parts (3-826632-6, 3-826925-6) and Samtec TSW-136-24-T-D are supplied in bulk packaging. Samtec BBD series (BBD-136-G-A, BBD-136-G-B, BBD-136-T-B) are supplied in tube packaging. Packaging selection affects handling, storage, and integration into assembly processes.

Q: Can I mix substitute parts in the same application?

A: All substitute parts meet the critical functional parameters for 72-position, 2.54mm pitch headers. However, variations in contact finish, contact shape, and insulation height may affect mating force, contact resistance, and board layout. Consistency within a single application is recommended to ensure uniform performance and reliability.

Q: What is the significance of the -65°C to 130°C operating range of the original part?

A: The original 68491-372 operates across a wider temperature range than most substitutes. Applications requiring operation at temperatures above 125°C or below -55°C should confirm compatibility with the selected substitute. TE Connectivity AMPMODU parts operate to 105°C maximum, which may be limiting for high-temperature applications.

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