Amphenol ICC 68691-372 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 68691-372 is a rectangular connector header featuring 72 positions with 0.100" (2.54mm) pitch, designed for through-hole board-to-board applications. This BERGSTIK® II series connector is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production support. The connector utilizes male pins with gold or GXT™ contact finish, phosphor bronze material, and operates across -65°C to 130°C temperature range with 3A current rating per contact.

Key Parameters

Parameter	Value
Manufacturer Part Number	68691-372
Manufacturer	Amphenol ICC (FCI)
Series	BERGSTIK® II
Product Status	Obsolete
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
Contact Shape	Square
Operating Temperature	-65°C ~ 130°C
Current Rating	3A
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 68691-372 is determined by strict adherence to the following electrical and mechanical 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
Contact Shape: Square
Style: Board to Board

Allowable Variations:

Contact Length - Post: Varies by application requirement
Contact Finish - Mating: Gold or Tin acceptable
Contact Finish Thickness - Mating: Varies
Contact Material: Copper Alloy or Phosphor Bronze
Insulation Material: Thermoplastic or Polyester variants
Operating Temperature Range: Must encompass application minimum and maximum
Current Rating: Must meet or exceed application requirement
Product Status: Active or Last Time Buy preferred over Discontinued

All substitute parts listed maintain the core 72-position, 2-row, 2.54mm pitch configuration essential for mechanical and electrical compatibility with the original 68691-372 specification.

Parameter Comparison

Parameter	68691-372 (Main)	2372-6221-TG	929710-01-36	929710-01-36-RK	929710-03-36-RK	929710-06-36-RK	929710-10-36-RK	929710-11-36-RK	929715-01-36-EU	929715-01-36-I	929715-03-36-EU
Manufacturer	Amphenol ICC	3M	3M	3M	3M	3M	3M	3M	3M	3M	3M
Series	BERGSTIK® II	2300	929	929	929	929	929	929	929	929	929
Product Status	Obsolete	Active	Last Time Buy	Active	Active	Active	Active	Active	Active	Active	Discontinued at DiGi Electronics
Number of Positions	72	72	72	72	72	72	72	72	72	72	72
Number of Rows	2	2	2	2	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)	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)
Contact Length - Post	0.120" (3.05mm)	0.120" (3.05mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.410" (10.41mm)	0.710" (18.03mm)	0.175" (4.45mm)	0.125" (3.18mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.410" (10.41mm)
Overall Contact Length	0.538" (13.67mm)	0.538" (13.67mm)	0.528" (13.42mm)	0.528" (13.42mm)	0.828" (21.03mm)	1.128" (28.65mm)	0.593" (15.07mm)	0.543" (13.80mm)	0.528" (13.42mm)	0.528" (13.42mm)	0.828" (21.03mm)
Insulation Height	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold or GXT™	Gold	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Gold	Gold	Gold
Contact Finish Thickness - Mating	50.0µin (1.27µm)	10.0µin (0.25µm)	100.0µin (2.54µm)	200.0µin (5.08µm)	200.0µin (5.08µm)	200.0µin (5.08µm)	200.0µin (5.08µm)	200.0µin (5.08µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)
Contact Material	Phosphor Bronze	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy
Operating Temperature	-65°C ~ 130°C	-55°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Current Rating	3A	3A	2.5A	2.5A	2.5A	2.5A	2.5A	2.5A	2.5A	2.5A	2.5A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: 3M 929710-01-36-RK

The 929710-01-36-RK is the preferred substitute for new designs. This part maintains full mechanical compatibility with the 68691-372 while offering active product status and RoHS compliance. The tin contact finish with 200.0µin thickness provides robust solderability and environmental protection. Operating temperature range of -40°C to 105°C covers standard industrial applications. Current rating of 2.5A per contact is suitable for most signal and moderate power distribution applications. PCT insulation material ensures reliability across the specified temperature range.

Alternative for Gold Contact Requirement: 3M 929715-01-36-EU or 929715-01-36-I

When gold contact finish is required for enhanced corrosion resistance or specific application requirements, the 929715 series provides direct substitution. Both 929715-01-36-EU and 929715-01-36-I maintain identical mechanical dimensions and electrical characteristics while offering gold plating at 10.0µin thickness. The 929715-01-36-EU uses PCT insulation material, while 929715-01-36-I uses PBT/Polyester glass-filled insulation. Both are RoHS compliant and active products.

Extended Post Length Options: 929710-03-36-RK, 929710-06-36-RK

Applications requiring extended solder post lengths for through-hole PCB assembly with thicker board stacks or specific assembly processes should consider 929710-03-36-RK (0.410" post length) or 929710-06-36-RK (0.710" post length). These maintain all other electrical and mechanical specifications while accommodating varied PCB thickness requirements.

Transition Path for Legacy Systems: 3M 2372-6221-TG

For systems currently using the 68691-372 that require minimal design changes, the 3M 2372-6221-TG from the 2300 series provides the closest dimensional match with identical contact length specifications. This part maintains 3A current rating and operates across -55°C to 105°C. However, it is RoHS non-compliant, limiting its use to legacy or non-regulated applications.

Compliance Considerations

All recommended substitutes except 2372-6221-TG are RoHS compliant, meeting modern regulatory requirements. The 929710 series with RK designation and 929715 series are REACH unaffected, providing additional environmental compliance assurance for international applications.

Frequently Asked Questions (FAQ)

Q: Can the 929710-01-36-RK directly replace the 68691-372 in existing designs?

A: Yes, the 929710-01-36-RK provides direct mechanical and electrical substitution. The 72-position, 2-row configuration with 0.100" pitch is identical. The primary design consideration is the reduced current rating from 3A to 2.5A per contact. If your application operates at or below 2.5A per contact, substitution is straightforward. If higher current is required, verify that the total current distribution across multiple contacts remains within acceptable limits.

Q: What is the difference between tin and gold contact finishes?

A: Tin contact finish (929710 series) provides excellent solderability and cost efficiency, suitable for standard through-hole assembly. Gold contact finish (929715 series) offers superior corrosion resistance and is preferred for applications with extended shelf life, high-reliability requirements, or environments with corrosive atmospheres. The 929715 series maintains identical mechanical dimensions and electrical performance while providing enhanced environmental protection.

Q: Why do some substitute parts have different post lengths?

A: Post length variation accommodates different PCB thicknesses and assembly requirements. The standard 0.110" post length (929710-01-36-RK, 929715-01-36-EU/I) suits typical PCB assemblies. Extended lengths like 0.410" (929710-03-36-RK) or 0.710" (929710-06-36-RK) are specified for thicker board stacks or applications requiring additional solder volume for mechanical strength. Select post length based on your PCB thickness and assembly process requirements.

Q: Is RoHS compliance required for my application?

A: RoHS compliance is mandatory for products sold in the European Union and increasingly required by major OEMs globally. All recommended substitutes except 2372-6221-TG are RoHS compliant. If your application or market requires RoHS compliance, select from the 929710-01-36-RK, 929710-03-36-RK, 929710-06-36-RK, 929710-10-36-RK, 929710-11-36-RK, or 929715 series parts.

Q: What is the operating temperature difference between the main part and substitutes?

A: The 68691-372 operates from -65°C to 130°C, while most 3M substitutes operate from -40°C to 105°C. This represents a narrower range. If your application requires operation below -40°C or above 105°C, the 68691-372 or equivalent high-temperature rated parts must be retained. For standard industrial applications operating within -40°C to 105°C, the substitutes are fully compatible.

Q: Can I use 929710-10-36-RK or 929710-11-36-RK instead of 929710-01-36-RK?

A: Yes. The 929710-10-36-RK (0.175" post length) and 929710-11-36-RK (0.125" post length) are electrically and mechanically identical to 929710-01-36-RK except for post length. Select based on your specific PCB thickness and assembly process. All three are active products with RoHS compliance and identical current ratings.

Q: What inventory status should I consider for production planning?

A: The 929710-01-36-RK, 929710-03-36-RK, 929710-06-36-RK, 929710-10-36-RK, 929710-11-36-RK, 929715-01-36-EU, and 929715-01-36-I are all active products with healthy inventory levels (962 to 1724 pieces in stock). The 929710-01-36 is marked as Last Time Buy, indicating limited future availability. The 929715-03-36-EU is discontinued at DiGi Electronics. For new designs, prioritize active products to ensure long-term supply continuity.

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