Amphenol ICC 68438-672 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 68438-672 is a rectangular connector header from the BERGSTIK® II series, configured as a through-hole, vertical-mount, 72-position connector with 0.100" (2.54mm) pitch. This connector features male pins with gold-plated mating contacts and phosphor bronze material construction. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	68438-672
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 Material	Phosphor Bronze
Contact Finish - Mating	Gold or Gold, GXT™
Contact Shape	Square
Insulation Color	Black
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 68438-672 is determined by strict alignment of the following electrical and mechanical parameters:

Connector Configuration: 72 positions, 2 rows, 0.100" (2.54mm) pitch mating and row spacing
Mounting and Termination: Through-hole solder termination with push-pull fastening
Contact Type: Male pin headers with board-to-board or board-to-cable compatibility
Connector Style: Unshrouded vertical orientation
Flammability Compliance: UL94 V-0 material rating
Moisture Sensitivity: MSL 1 (Unlimited)

Substitute parts must maintain these core parameters. Variations in contact material, contact finish composition, insulation material, and overall contact length are acceptable provided the mating interface dimensions and electrical performance remain compatible with the original specification.

Parameter Comparison

Parameter	68438-672 (Main)	2372-6121-TG (3M)	450-10-272-00-013101 (Preci-Dip)	450-80-272-00-001101 (Preci-Dip)	450-V3-272-00-006101 (Preci-Dip)	MTLW-136-06-F-D-220 (Samtec)	MTLW-136-06-T-D-240 (Samtec)	MTLW-136-07-F-D-230 (Samtec)	MTLW-136-07-F-D-250 (Samtec)	MTLW-136-07-F-D-255 (Samtec)	MTLW-136-07-F-D-260 (Samtec)
Manufacturer	Amphenol ICC (FCI)	3M	Preci-Dip	Preci-Dip	Preci-Dip	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
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)
Connector Type	Header	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	Male Pin
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 Shape	Square	Square	Circular	Circular	Circular	Square	Square	Square	Square	Square	Square
Contact Material	Phosphor Bronze	Copper Alloy	Brass	Brass	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Contact Finish - Mating	Gold or Gold, GXT™	Gold	Gold	Tin	Gold	Gold	Tin	Gold	Gold	Gold	Gold
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
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
RoHS Status	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	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 Substitutes (Active Status, RoHS3 Compliant)

The Preci-Dip 450 series (450-10-272-00-013101, 450-80-272-00-001101, 450-V3-272-00-006101) and Samtec MTLW-136 series represent the most current alternatives. All are active products with ROHS3 compliance, addressing regulatory requirements beyond the original obsolete part. The Preci-Dip variants feature brass contacts with circular geometry, while Samtec MTLW-136 variants maintain square contact geometry consistent with the original design.

Secondary Substitute (Active Status, RoHS Non-Compliant)

The 3M 2372-6121-TG remains an active product but retains RoHS non-compliant status, matching the original part's regulatory classification. This option is suitable for legacy system maintenance where RoHS compliance is not required.

Contact Geometry Consideration

The original 68438-672 features square contacts. Samtec MTLW-136 variants preserve this geometry. Preci-Dip 450 series employ circular contacts, which represent a design variation acceptable within the 0.100" (2.54mm) pitch standard but may require board layout verification.

Operating Temperature Range

The original part does not specify an operating temperature range. Substitute parts provide defined ranges: 3M 2372-6121-TG (-55°C to 105°C), Preci-Dip 450 series (-55°C to 125°C), and Samtec MTLW-136 series (-55°C to 105°C or -55°C to 125°C depending on variant). Design applications requiring extended temperature performance should select Preci-Dip or appropriate Samtec variants.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the 68438-672 with any of these substitute parts?

A: Yes, all listed substitutes maintain the core electrical and mechanical parameters: 72 positions, 2 rows, 0.100" (2.54mm) pitch, through-hole solder termination, and push-pull fastening. Physical board layout compatibility depends on overall connector height and contact length variations. Samtec MTLW-136 variants offer the closest form factor match due to square contact geometry.

Q: What is the difference between the Preci-Dip 450 variants?

A: The three Preci-Dip variants differ in contact finish and material composition. 450-10-272-00-013101 features gold-plated mating contacts. 450-80-272-00-001101 uses tin finish. 450-V3-272-00-006101 combines gold mating contacts with tin post finish. All three maintain identical pitch, position count, and mounting configuration. Selection depends on solderability requirements and contact resistance specifications for your application.

Q: Why do some substitutes have different contact lengths?

A: Contact length variation accommodates different PCB stack-up requirements and mating depth specifications. The original 68438-672 specifies 0.230" (5.84mm) mating contact length. Samtec MTLW-136 variants range from 0.220" to 0.260" mating contact length. Preci-Dip 450 series range from 0.134" to 0.156". Verify your PCB design accommodates the selected substitute's contact length before implementation.

Q: Are there RoHS compliance implications for substitution?

A: The original 68438-672 is RoHS non-compliant. Most active substitutes (Preci-Dip 450 series and Samtec MTLW-136 series) are ROHS3 compliant. If your application requires RoHS non-compliant components for legacy system compatibility, the 3M 2372-6121-TG maintains this classification. For new designs, ROHS3-compliant substitutes are recommended.

Q: What is the inventory status of these substitutes?

A: All listed substitutes are currently in stock: 3M 2372-6121-TG (1023 pcs), Preci-Dip 450-10-272-00-013101 (988 pcs), Preci-Dip 450-80-272-00-001101 (736 pcs), Preci-Dip 450-V3-272-00-006101 (988 pcs), Samtec MTLW-136-06-F-D-220 (836 pcs), Samtec MTLW-136-06-T-D-240 (1050 pcs), Samtec MTLW-136-07-F-D-230 (834 pcs), Samtec MTLW-136-07-F-D-250 (895 pcs), Samtec MTLW-136-07-F-D-255 (897 pcs), Samtec MTLW-136-07-F-D-260 (728 pcs).

Q: Which substitute offers the best long-term availability?

A: All listed substitutes carry active product status, indicating ongoing manufacturer support. Samtec MTLW-136 series and Preci-Dip 450 series represent established product lines with multiple variants, suggesting sustained availability. For critical applications requiring extended procurement windows, contact manufacturers directly for long-term availability commitments.

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