Amphenol ICC 66902-120 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66902-120 is a 20-position rectangular receptacle connector with IDC (Insulation Displacement Contact) termination, designed for ribbon cable applications with 28-30 AWG wire gauge. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The Quickie™ series connector features gold or gold GXT™ contact finish and is suitable for free-hanging, in-line mounting applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	66902-120
Manufacturer	Amphenol ICC (FCI)
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	20
Pitch	0.100" (2.54mm)
Number of Rows	2
Row Spacing	0.100" (2.54mm)
Cable Termination	IDC
Wire Type	Ribbon Cable
Wire Gauge	28-30 AWG
Mounting Type	Free Hanging (In-Line)
Contact Finish	Gold or Gold, GXT™
Features	Feed Through
Product Status	Obsolete
RoHS Status	RoHS non-compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 66902-120 is determined by the following critical parameters:

Primary Matching Criteria:

Connector type: Receptacle
Contact type: Female socket
Number of positions: 20
Pitch: 0.100" (2.54mm)
Number of rows: 2
Row spacing: 0.100" (2.54mm)
Cable termination: IDC
Wire type: Ribbon cable
Mounting type: Free hanging (in-line)
Contact finish: Gold

Secondary Compatibility Factors:

Wire gauge: 26-28 AWG (compatible with 28-30 AWG applications within overlap range)
Features: Feed through capability
MSL rating: 1 (Unlimited)

All identified substitute parts maintain the core mechanical and electrical interface specifications. Wire gauge differences fall within acceptable overlap ranges for IDC ribbon cable connectors. Substitute parts are sourced from active product lines with current manufacturing support.

Parameter Comparison

Parameter	66902-120 (Amphenol ICC)	09185206803 (HARTING)	09185207803 (HARTING)	89120-0001 (3M)
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	20	20	20	20
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2	2	2
Row Spacing	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Cable Termination	IDC	IDC	IDC	IDC
Wire Type	Ribbon Cable	Ribbon Cable	Ribbon Cable	Ribbon Cable
Wire Gauge	28-30 AWG	26-28 AWG	26-28 AWG	26-28 AWG
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Finish	Gold or Gold, GXT™	Gold	Gold	Gold
Features	Feed Through	Feed Through, Polarizing Key	Feed Through, Polarizing Key	Feed Through
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Product Status Consideration: The 66902-120 is obsolete and no longer manufactured. All three substitute parts are active products with current manufacturing support, ensuring long-term availability and supply chain continuity.

Compliance Status: The original 66902-120 is RoHS non-compliant. All substitute parts (09185206803, 09185207803, and 89120-0001) are ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and system upgrades.

Wire Gauge Compatibility: The substitute parts operate at 26-28 AWG, which overlaps with the original specification of 28-30 AWG. The 28 AWG overlap point ensures functional compatibility for ribbon cable applications within this range.

Packaging and Inventory:

HARTING 09185206803: Bulk packaging, 926 units in stock
HARTING 09185207803: Tray packaging, 697 units in stock
3M 89120-0001: Bulk packaging, 6688 units in stock

The 3M 89120-0001 offers the highest inventory availability. HARTING parts provide polarizing key features for enhanced connector security.

Frequently Asked Questions (FAQ)

Q: Can the 66902-120 be directly replaced with any of these substitute parts?

A: Yes. All three substitute parts maintain identical mechanical and electrical interface specifications: 20-position, 0.100" pitch, 2-row configuration, IDC ribbon cable termination, and free-hanging in-line mounting. The connectors are mechanically and electrically interchangeable.

Q: What is the significance of the wire gauge difference (28-30 AWG vs. 26-28 AWG)?

A: The substitute parts specify 26-28 AWG, while the original specifies 28-30 AWG. The 28 AWG overlap ensures compatibility. IDC connectors are designed to accommodate wire gauge ranges, and the 26-28 AWG specification of the substitutes covers the primary operating range of the original connector.

Q: Do the HARTING parts with polarizing keys affect compatibility?

A: The polarizing key feature on HARTING parts (09185206803 and 09185207803) is an additional mechanical safety feature that prevents incorrect connector orientation. This feature does not prevent compatibility with standard ribbon cables and enhances system reliability.

Q: What is the difference between the two HARTING substitute parts?

A: HARTING 09185206803 and 09185207803 are electrically and mechanically identical. The difference is packaging: 09185206803 is supplied in bulk, while 09185207803 is supplied in trays. Selection depends on inventory management and handling requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts are ROHS3 compliant, whereas the original 66902-120 is RoHS non-compliant. This compliance upgrade is beneficial for new designs and systems requiring environmental regulation adherence.

Q: Which substitute part should be selected for maximum inventory availability?

A: The 3M 89120-0001 offers the highest inventory level at 6688 units in stock, compared to 926 units for HARTING 09185206803 and 697 units for HARTING 09185207803.

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