Amphenol ICC 68683-321 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 68683-321 is a 42-position receptacle connector with 0.100" (2.54mm) pitch, designed for board-to-board applications in automotive, industrial, and telecommunications environments. This connector features gold-plated mating contacts, through-hole solder termination, and push-pull fastening. The product is currently obsolete, making equivalent substitutes necessary for ongoing system support and new production requirements.

Substiute Parts

68683-321

Amphenol ICC (FCI)In Stock: 120268683-321 Datasheet

Current PartRFQ

803-41-042-10-001000

Mill-Max Manufacturing Corp.In Stock: 1026803-41-042-10-001000 Datasheet

MFR RecommendedRFQ

803-41-042-10-004000

Mill-Max Manufacturing Corp.In Stock: 919803-41-042-10-004000 Datasheet

MFR RecommendedRFQ

803-43-042-10-001000

Mill-Max Manufacturing Corp.In Stock: 972803-43-042-10-001000 Datasheet

MFR RecommendedRFQ

803-91-042-10-001000

Mill-Max Manufacturing Corp.In Stock: 658803-91-042-10-001000 Datasheet

MFR RecommendedRFQ

803-93-042-10-001000

Mill-Max Manufacturing Corp.In Stock: 955803-93-042-10-001000 Datasheet

MFR RecommendedRFQ

803-99-042-10-001000

Mill-Max Manufacturing Corp.In Stock: 899803-99-042-10-001000 Datasheet

MFR RecommendedRFQ

803-99-042-10-002000

Mill-Max Manufacturing Corp.In Stock: 906803-99-042-10-002000 Datasheet

MFR RecommendedRFQ

BCS-121-S-D-TE

Samtec Inc.In Stock: 722BCS-121-S-D-TE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 68683-321 is determined by strict adherence to the following critical parameters:

Primary Matching Criteria (Non-Negotiable):

• Connector type: Receptacle
• Number of positions: 42
• Pitch - mating: 0.100" (2.54mm)
• Number of rows: 2
• Row spacing - mating: 0.100" (2.54mm)
• Mounting type: Through hole
• Termination: Solder
• Fastening type: Push-pull
• Contact type: Female socket
• Style: Board to board
• Material flammability rating: UL94 V-0

Secondary Parameters (Allowable Variation):

• Contact finish - mating: Gold or tin-lead
• Contact finish thickness - mating: 10.0µin to 100.0µin
• Insulation height: 0.165" to 0.290"
• Contact length - post: 0.115" to 0.125"
• Operating temperature: -55°C to -65°C minimum; 125°C maximum
• Contact material: Phosphor bronze or beryllium copper
• Insulation material: PPS glass-filled or PCT polyester
• Contact shape: Square or circular

The seven substitute parts listed below meet all primary matching criteria and fall within acceptable ranges for secondary parameters.

Parameter Comparison

Engineering Selection Recommendations

All seven substitute parts are active products with ROHS3 compliance, addressing the regulatory limitation of the obsolete 68683-321. Selection criteria are based on product status, compliance certifications, and operational requirements:

Mill-Max 803 Series (803-41-042-10-001000, 803-41-042-10-004000, 803-43-042-10-001000, 803-91-042-10-001000, 803-93-042-10-001000, 803-99-042-10-001000, 803-99-042-10-002000): All Mill-Max substitutes are active products with ROHS3 compliance. The 803 series uses beryllium copper contacts with improved electrical performance (4.5A current rating) compared to the original phosphor bronze design. Contact finish options include gold (10.0µin to 30.0µin thickness) and tin-lead (100.0µin thickness). Insulation materials transition from PPS to PCT polyester. Operating temperature minimum is -55°C, which is acceptable for most applications except those requiring the full -65°C specification. The 803-99-042-10-002000 variant features reduced insulation height (0.165") and extended contact length (0.125"), suitable for compact board designs.

Samtec BCS-121-S-D-TE: The Samtec Tiger Claw BCS-121-S-D-TE is an active product with ROHS3 compliance. This connector maintains phosphor bronze contacts matching the original material specification and provides the highest current rating (4.6A per contact). The LCP glass-filled insulation material offers superior thermal and mechanical properties. Insulation height is 0.290", the highest among substitutes, and contact length is 0.122". Voltage rating is specified at 475VAC. This option is optimal for applications requiring material consistency with the original design and enhanced electrical performance.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitutes as a direct replacement for the 68683-321?

A: All seven substitutes meet the primary matching criteria for board-to-board 42-position 0.100" pitch receptacle connectors with push-pull fastening and solder termination. However, verify your specific application requirements for operating temperature range, contact material preference, and compliance certifications before selection.

Q: What is the difference between the Mill-Max 803 variants?

A: The Mill-Max 803 series variants differ in contact finish specifications and physical dimensions. The 803-41 series offers 10.0µin gold finish; 803-43 and 803-93 provide 30.0µin gold finish; 803-91 and 803-93 use tin-lead post finish; 803-99 variants feature tin-lead mating finish with 100.0µin thickness. The 803-99-042-10-002000 has reduced insulation height (0.165") and extended contact length (0.125") for compact applications.

Q: Why is the operating temperature range different for the substitutes?

A: The original 68683-321 specifies -65°C to 125°C. All active substitutes specify -55°C to 125°C. This represents a 10°C reduction in minimum operating temperature. For applications requiring operation below -55°C, the original part specification must be maintained or alternative solutions evaluated.

Q: What is the significance of RoHS compliance?

A: The 68683-321 is RoHS non-compliant. All seven substitutes are ROHS3 compliant, meeting current regulatory requirements for lead-free materials and restricted substance limitations. This is essential for new production and systems subject to environmental regulations.

Q: How do contact materials affect connector performance?

A: The original 68683-321 uses phosphor bronze contacts; most Mill-Max substitutes use beryllium copper, which provides superior electrical conductivity and spring characteristics, supporting the higher 4.5A current rating. The Samtec BCS-121-S-D-TE maintains phosphor bronze contacts, matching the original material specification while achieving 4.6A per contact performance.

Q: Are there packaging differences between substitutes?

A: Yes. Mill-Max 803 series parts are supplied in bulk packaging; Samtec BCS-121-S-D-TE is supplied in tube packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Which substitute is best for high-reliability applications?

A: The Samtec BCS-121-S-D-TE offers the highest current rating (4.6A per contact), LCP glass-filled insulation material with superior thermal properties, and phosphor bronze contacts matching the original design. This combination provides optimal performance for demanding applications.

Q: Can I mix different substitute parts in the same assembly?

A: All substitutes are mechanically and electrically compatible due to identical pitch, position count, and mating interface specifications. However, maintain consistency within a single assembly for quality control and traceability purposes.