Amphenol ICC 66506-103 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66506-103 is a vertical rectangular connector header with 50 positions at 2.54mm pitch, designed for through-hole mounting in board-to-cable/wire applications. This shrouded 4-wall header features male pins with solder termination and push-pull fastening. The part is currently active in production. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct replacement in compatible applications.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	50
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Shape	Square
Insulation Material	Glass Filled Polymer
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 66506-103 is determined by strict alignment of core electrical and mechanical parameters. The following criteria define acceptable equivalents:

Primary Substitution Criteria:

Connector type: Header
Contact type: Male Pin
Pitch - mating: 0.100" (2.54mm)
Number of positions: 50
Number of rows: 2
Row spacing - mating: 0.100" (2.54mm)
Shrouding: Shrouded - 4 Wall
Mounting type: Through Hole
Termination: Solder
Fastening type: Push-Pull
Contact shape: Square
Material flammability rating: UL94 V-0
Insulation color: Black
Moisture sensitivity level: 1 (Unlimited)

The identified substitutes—Molex 0702465004 and 3M N2550-6002-RB—meet all primary substitution criteria. Variations in contact length, contact finish thickness, and insulation material composition do not preclude substitution when the core mating and mounting parameters remain identical.

Parameter Comparison

Parameter	Amphenol ICC 66506-103	Molex 0702465004	3M N2550-6002-RB
Manufacturer	Amphenol ICC (FCI)	Molex	3M
Series	Quickie™	C-Grid 70246	2500
Connector Type	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	50	50	50
Number of Rows	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Mounting Type	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.230" (5.84mm)	0.240" (6.10mm)	0.243" (6.17mm)
Contact Length - Post	0.105" (2.67mm)	0.135" (3.43mm)	0.112" (2.84mm)
Insulation Height	0.365" (9.27mm)	0.365" (9.27mm)	0.390" (9.91mm)
Contact Shape	Square	Square	Square
Contact Finish - Mating	Gold or Gold, GXT™	Gold	Gold
Contact Material	Phosphor Bronze	Phosphor Bronze	Copper Alloy
Insulation Material	Polyester, Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black
Product Status	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

All three parts maintain active product status and share identical core mating and mounting specifications. The Molex 0702465004 and 3M N2550-6002-RB both achieve ROHS3 compliance, whereas the original Amphenol ICC 66506-103 is RoHS non-compliant. Selection between substitutes should account for compliance requirements in the target application. The 3M N2550-6002-RB provides specified operating temperature range (-55°C ~ 105°C) and current rating (1.75A), parameters not provided for the other parts. Contact length variations across the three parts are minor and do not affect standard through-hole PCB mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can Molex 0702465004 directly replace Amphenol ICC 66506-103?

A: Yes. Both parts share identical pitch (2.54mm), position count (50), row configuration (2 rows), shrouding (4-wall), mounting type (through-hole), termination (solder), and fastening mechanism (push-pull). Contact length differences are within typical PCB design tolerances for standard through-hole applications.

Q: What is the primary difference between the substitute parts?

A: The Molex 0702465004 uses polybutylene terephthalate (PBT) insulation, while the 3M N2550-6002-RB uses polycyclohexylenedimethylene terephthalate (PCT) with polyester. Both materials are glass-filled and rated UL94 V-0. The 3M part specifies operating temperature (-55°C ~ 105°C) and current rating (1.75A), which are not provided for the Molex part.

Q: Are there packaging differences between these parts?

A: The Amphenol ICC 66506-103 and Molex 0702465004 are supplied in trays. The 3M N2550-6002-RB is supplied in bulk packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: Does RoHS compliance affect substitution eligibility?

A: RoHS compliance is a regulatory and supply-chain consideration, not a functional substitution criterion. The Molex 0702465004 and 3M N2550-6002-RB are ROHS3 compliant, while the original Amphenol ICC 66506-103 is not. Selection should align with application regulatory requirements.

Q: Are contact finish specifications critical for substitution?

A: Contact finish affects signal integrity and environmental resistance. The original part specifies gold or gold GXT™ at 15.0µin thickness. The Molex substitute provides gold at 5.00µin, and the 3M substitute provides gold at 30.0µin. These variations remain within acceptable ranges for standard connector applications but should be evaluated for high-reliability or harsh-environment use cases.

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