Amphenol ICC 68691-272 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 68691-272 is a rectangular connector header featuring 72 positions at 2.54mm pitch, designed for through-hole board-to-board applications. This BERGSTIK® II series component operates across -65°C to 130°C with a 3A current rating and gold-plated mating contacts. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	68691-272
Manufacturer	Amphenol ICC (FCI)
Connector Type	Header
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
Contact Type	Male Pin
Termination	Solder
Operating Temperature	-65°C ~ 130°C
Current Rating	3A
Contact Finish - Mating	Gold or Gold, GXT™
Material Flammability Rating	UL94 V-0
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 68691-272 is determined by the following critical parameters:

Primary Matching Criteria:

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

Secondary Compatibility Factors:

Contact Length - Mating: 0.318" (8.08mm)
Insulation Height: 0.100" (2.54mm)
Contact Shape: Square
Material Flammability Rating: UL94 V-0

Substitute parts meeting these criteria maintain mechanical and electrical interchangeability. Variations in contact finish, post length, insulation material, and operating temperature range are secondary considerations dependent on application requirements.

Parameter Comparison

Parameter	68691-272 (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
Manufacturer	Amphenol ICC	3M	3M	3M	3M	3M	3M	3M	3M	3M
Number of Positions	72	72	72	72	72	72	72	72	72	72
Number of Rows	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)
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)
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	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	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
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)
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)
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)
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)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold or Gold, GXT™	Gold	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Gold	Gold
Current Rating	3A	3A	2.5A	2.5A	2.5A	2.5A	2.5A	2.5A	2.5A	2.5A
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
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
Product Status	Obsolete	Active	Last Time Buy	Active	Active	Active	Active	Active	Active	Active
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

Engineering Selection Recommendations

Primary Recommendation: 3M 929715-01-36-EU or 929715-01-36-I

These parts provide the closest functional match to the 68691-272. Both maintain 72-position, 2-row configuration at 2.54mm pitch with gold-plated mating contacts. The 929715 series offers active product status with RoHS compliance, addressing obsolescence concerns. The 929715-01-36-EU and 929715-01-36-I differ only in insulation material composition (PCT versus PBT/Polyester glass-filled), with identical electrical and mechanical performance. Both support the -40°C to 105°C operating range and 2.5A current rating.

Secondary Recommendation: 3M 2372-6221-TG

The 3M 2300 series header 2372-6221-TG maintains full 72-position compatibility with identical pitch and row spacing. This part is actively produced and supports board-to-board or cable applications. Operating temperature range is -55°C to 105°C with 3A current rating, matching the original part's current capacity. Gold mating contact finish aligns with the 68691-272 specification. RoHS non-compliance status mirrors the original part.

Alternative Consideration: 3M 929710 Series (Multiple Post Lengths)

The 929710 series provides 72-position headers with variable post lengths (929710-01-36-RK, 929710-03-36-RK, 929710-06-36-RK, 929710-10-36-RK, 929710-11-36-RK). All variants are RoHS compliant with active product status. Post length selection depends on PCB thickness and application requirements. These parts feature tin-plated mating contacts and operate at 2.5A, requiring verification against current budget constraints.

Not Recommended: TE Connectivity 4-102973-0

The TE Connectivity AMPMODU Mod II connector features 80 positions rather than 72, creating mechanical incompatibility. While pitch and row spacing match, the increased position count prevents direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the 68691-272 be directly replaced with any of these substitute parts?

A: Direct replacement depends on application-specific requirements. All listed substitutes maintain the critical 72-position, 2-row, 2.54mm pitch configuration required for mechanical and electrical interchangeability. However, variations in contact finish (gold versus tin), operating temperature range (-40°C to 105°C versus -65°C to 130°C), and current rating (2.5A versus 3A) must be evaluated against your design specifications.

Q: What is the primary difference between the 929715-01-36-EU and 929715-01-36-I?

A: Both parts are functionally identical in electrical and mechanical performance. The difference lies in insulation material: 929715-01-36-EU uses polycyclohexylenedimethylene terephthalate (PCT), while 929715-01-36-I uses polybutylene terephthalate (PBT) with polyester and glass filler. Material selection may affect thermal and mechanical properties in specific environments.

Q: Why do the 929710 series parts have different post lengths?

A: Post length variation accommodates different PCB thicknesses and application geometries. The 929710-01-36-RK (0.110" post) closely matches the original 68691-272 (0.120" post). Longer post variants (929710-03-36-RK, 929710-06-36-RK) support thicker PCBs or applications requiring extended standoff. Selection depends on your PCB thickness and mechanical clearance requirements.

Q: Is RoHS compliance required for my application?

A: The original 68691-272 is RoHS non-compliant. If your application or market requires RoHS compliance, select from the 929710 series (all variants) or 929715 series parts, which are RoHS compliant. The 2372-6221-TG and 929710-01-36 (non-RK variant) remain RoHS non-compliant.

Q: What is the current rating difference between the original part and substitutes?

A: The 68691-272 supports 3A continuous current. Most substitutes (929710 and 929715 series) are rated for 2.5A. The 3M 2372-6221-TG maintains the 3A rating. Verify that 2.5A capacity is sufficient for your circuit design before selecting the 929710 or 929715 series.

Q: Can I use the TE Connectivity 4-102973-0 as a substitute?

A: No. The 4-102973-0 features 80 positions in a 2-row configuration, compared to the 72 positions of the 68691-272. This position mismatch creates mechanical incompatibility and prevents direct substitution.

Q: How do I select between gold and tin contact finishes?

A: The original 68691-272 uses gold-plated mating contacts. Gold provides superior corrosion resistance and lower contact resistance over extended service life. The 929715 series maintains gold finish. The 929710 series uses tin plating, which is acceptable for many applications but may exhibit higher contact resistance in low-signal environments. Select based on your signal integrity and environmental exposure requirements.

Q: What is the operating temperature range difference?

A: The 68691-272 operates from -65°C to 130°C. Substitute parts operate within narrower ranges: 2372-6221-TG (-55°C to 105°C) and 929710/929715 series (-40°C to 105°C). If your application requires the full -65°C to 130°C range, verify that the substitute's temperature specification is acceptable for your thermal environment.

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