Amphenol ICC 77317-803-40 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77317-803-40 is a through-hole, right-angle rectangular connector header with 40 positions at 2.54mm pitch, designed for board-to-board applications. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The connector features a breakaway design with unshrouded construction, phosphor bronze contacts with gold plating on mating surfaces, and thermoplastic insulation rated UL94 V-0.

Key Parameters

Parameter	Value
Manufacturer Part Number	77317-803-40
Manufacturer	Amphenol ICC (FCI)
Category	Rectangular Connectors
Series	BERGSTIK®
Connector Type	Header, Breakaway
Number of Positions	40
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Contact Type	Male Pin
Contact Finish - Mating	Gold, GXT™
Contact Material	Phosphor Bronze
Insulation Material	Thermoplastic
Material Flammability Rating	UL94 V-0
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 77317-803-40 is determined by the following critical parameters:

Pitch - Mating: 0.100" (2.54mm) - exact match required
Number of Positions: 40 - exact match required
Number of Rows: 2 - exact match required
Row Spacing - Mating: 0.100" (2.54mm) - exact match required
Mounting Type: Through Hole, Right Angle - exact match required
Contact Type: Male Pin - exact match required
Style: Board to Board - exact match required
Termination: Solder - exact match required
Fastening Type: Push-Pull - exact match required

All three substitute parts meet these core electrical and mechanical parameters. Variations in contact finish, contact material, insulation material composition, operating temperature range, and current rating are permitted within the rectangular connector category for this pitch and position configuration.

Parameter Comparison

Parameter	77317-803-40 (Main)	77317-803-40LF	929838-01-20	M20-9742046
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M	Harwin Inc.
Series	BERGSTIK®	BERGSTIK®	929	M20
Product Status	Obsolete	Active	Active	Active
Number of Positions	40	40	40	40
Number of Rows	2	2	2	2
Pitch - Mating	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)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Connector Type	Header, Breakaway	Header, Breakaway	Header	Header, Cuttable
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)	0.235" (5.97mm)	0.228" (5.80mm)
Contact Length - Post	0.100" (2.54mm)	0.100" (2.54mm)	0.110" (2.79mm)	0.118" (3.00mm)
Insulation Height	0.190" (4.83mm)	0.190" (4.83mm)	0.215" (5.45mm)	0.200" (5.08mm)
Contact Finish - Mating	Gold, GXT™	Gold, GXT™	Tin-Lead	Tin
Contact Material	Phosphor Bronze	Phosphor Bronze	Copper Alloy	Brass
Insulation Material	Thermoplastic	Thermoplastic	Polybutylene Terephthalate (PBT), Polyester, Glass Filled	Polyamide (PA6T), Nylon 6T
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Operating Temperature	Not specified	-65°C ~ 130°C	-40°C ~ 105°C	-40°C ~ 105°C
Current Rating (Amps)	Not specified	3A per Contact	2.5A	3A per Contact
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Affected	REACH Affected	REACH Unaffected

Engineering Selection Recommendations

77317-803-40LF (Amphenol ICC - Direct Manufacturer Upgrade)

The 77317-803-40LF is the direct active-production equivalent from the original manufacturer. It maintains identical mechanical and electrical specifications to the obsolete 77317-803-40, with the addition of RoHS compliance and an extended operating temperature range of -65°C to 130°C. This part is the preferred substitute for direct replacement in existing designs. The "LF" designation indicates lead-free compliance.

929838-01-20 (3M - Cross-Manufacturer Alternative)

The 3M 929838-01-20 meets all core mechanical and electrical requirements with minor dimensional variations in contact length and insulation height. This part operates within -40°C to 105°C and carries a 2.5A current rating per contact. It is RoHS non-compliant, matching the compliance status of the original part. Selection of this substitute is appropriate when 3M connector ecosystem compatibility is required or when existing inventory of 3M connectors is preferred.

M20-9742046 (Harwin Inc. - Cross-Manufacturer Alternative)

The Harwin M20-9742046 meets all core mechanical and electrical requirements with a cuttable connector design feature. This part operates within -40°C to 105°C and carries a 3A current rating per contact. It is ROHS3 compliant and REACH unaffected. The cuttable design provides additional flexibility for custom breakaway configurations. Selection of this substitute is appropriate when Harwin connector ecosystem compatibility is required or when the cuttable feature provides design advantages.

Frequently Asked Questions (FAQ)

Q: Can the 77317-803-40LF be used as a direct replacement for the 77317-803-40?

A: Yes. The 77317-803-40LF is the active-production equivalent from Amphenol ICC with identical pitch (2.54mm), position count (40), row configuration (2 rows), and mounting type (through-hole right-angle). The primary differences are product status (active vs. obsolete), RoHS compliance (compliant vs. non-compliant), and extended operating temperature range (-65°C to 130°C vs. unspecified).

Q: What are the key differences between the three substitute parts?

A: All three substitutes share identical pitch, position count, row spacing, and mounting configuration. Differences include: contact material (phosphor bronze vs. copper alloy vs. brass), contact finish (gold vs. tin-lead vs. tin), insulation material composition, operating temperature range, current rating, and compliance certifications. Contact length and insulation height vary slightly across manufacturers.

Q: Are there compatibility concerns with mating connectors?

A: The 0.100" (2.54mm) pitch and 40-position, 2-row configuration are industry-standard for this connector class. All substitute parts maintain these specifications. Minor variations in contact length and insulation height are within acceptable tolerances for standard 2.54mm pitch mating connectors. Verify mating connector specifications for your specific application.

Q: Which substitute part should be selected for new designs?

A: For new designs requiring RoHS compliance, the 77317-803-40LF (Amphenol ICC) or M20-9742046 (Harwin) are appropriate. The 77317-803-40LF provides the widest operating temperature range (-65°C to 130°C) and maintains the original manufacturer ecosystem. The M20-9742046 offers ROHS3 compliance and a cuttable design feature.

Q: What is the significance of the "LF" designation in 77317-803-40LF?

A: The "LF" designation indicates lead-free construction, reflecting RoHS compliance requirements. This part is manufactured without lead-based solder or finishes, meeting current environmental and regulatory standards.

Q: Are all substitute parts available in the same packaging?

A: The main part 77317-803-40 packaging is not specified. All three substitute parts are available in bulk packaging, suitable for production assembly and component distribution.

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