Amphenol ICC 66953-003 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66953-003 is a 6-position receptacle connector with 0.100" (2.54mm) pitch, designed for board-to-board applications. This connector features gold-plated mating contacts, through-hole solder termination, and push-pull fastening. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and field replacement requirements.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	6
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 Finish - Mating	Gold
Operating Temperature Range	-65°C ~ 125°C
Material Flammability Rating	UL94 V-0
Insulation Material	Polyester, Glass Filled
Voltage Rating	1250V

Substitute Part Grouping Explanation

Substitution eligibility for the 66953-003 is determined by strict alignment with the following critical parameters:

Connector Configuration: 6-position receptacle with 2 rows at 0.100" (2.54mm) pitch and row spacing
Contact Interface: Female socket with gold-plated mating surface
Mounting & Termination: Through-hole solder termination with push-pull fastening
Environmental Compliance: Operating temperature range of -65°C ~ 125°C and UL94 V-0 flammability rating
Electrical Performance: 1250V voltage rating and polyester glass-filled insulation

The identified substitutes maintain these core parameters, ensuring mechanical and electrical interchangeability in board-to-board applications.

Parameter Comparison

Parameter	66953-003	66953-003LF	534206-3
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	TE Connectivity AMP Connectors
Product Status	Obsolete	Active	Active
Connector Type	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket
Number of Positions	6	6	6
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)
Insulation Color	Black	Black	Black
Insulation Height	0.325" (8.25mm)	0.325" (8.25mm)	0.320" (8.13mm)
Operating Temperature	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C
Insulation Material	Polyester, Glass Filled	Polyester, Glass Filled	Polyester, Glass Filled
Contact Shape	Square	Square	Square
Contact Material	Brass	Brass	Phosphor Bronze
RoHS Status	Non-compliant	Compliant	Not applicable
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

66953-003LF is the primary direct substitute for the obsolete 66953-003. Both parts are manufactured by Amphenol ICC (FCI) within the Dubox™ and BergCon® PV™ series. The 66953-003LF maintains identical electrical and mechanical specifications while offering active product status and RoHS compliance. The "LF" designation indicates lead-free processing, aligning with modern manufacturing standards. This part is recommended for new designs and direct replacement in existing applications.

534206-3 (TE Connectivity AMP Connectors, AMPMODU Mod II series) is a cross-manufacturer alternative that satisfies the core substitution parameters. This part maintains the same connector configuration, pitch, row spacing, and operating temperature range. Minor dimensional variations exist in insulation height (0.320" versus 0.325") and contact post length (0.115" versus 0.138"), which remain within acceptable mechanical tolerances for board-to-board mating. The 534206-3 provides an alternative sourcing option when Amphenol ICC parts are unavailable.

Frequently Asked Questions (FAQ)

Q: Can 66953-003LF directly replace 66953-003 in existing designs?

A: Yes. The 66953-003LF maintains identical electrical and mechanical specifications as the obsolete 66953-003. Both parts feature 6-position, 0.100" pitch receptacle connectors with gold-plated mating contacts, through-hole solder termination, and push-pull fastening. The primary difference is product status (active versus obsolete) and RoHS compliance.

Q: What are the key differences between 66953-003LF and 534206-3?

A: Both parts are functionally equivalent 6-position receptacles with 0.100" pitch and identical row spacing. Differences include manufacturer (Amphenol ICC versus TE Connectivity), contact material (brass versus phosphor bronze), and minor dimensional variations in insulation height and contact post length. These variations do not affect mating compatibility or electrical performance in standard board-to-board applications.

Q: Are there packaging differences between these substitutes?

A: The 66953-003 original part has unspecified packaging. Both 66953-003LF and 534206-3 are supplied in tube packaging, which is standard for through-hole connectors and suitable for automated assembly processes.

Q: What is the significance of the "LF" designation in 66953-003LF?

A: The "LF" suffix indicates lead-free processing and RoHS compliance. This designation reflects compliance with environmental regulations and modern manufacturing standards while maintaining full electrical and mechanical compatibility with the original 66953-003.

Q: Can 534206-3 be used in applications requiring UL94 V-0 flammability rating?

A: The 534206-3 specification does not explicitly state a material flammability rating. The original 66953-003 and direct substitute 66953-003LF both carry UL94 V-0 certification. For applications with specific flammability requirements, 66953-003LF is the recommended choice.

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