TE Connectivity AMP Connectors 31890 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 31890 is an insulated ring terminal connector designed for circular 8 stud applications. This component is classified as a crimp-style terminal suitable for wire gauges 16-22 AWG and is constructed with copper contact material and tin finish. The part is currently in active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative equivalent parts may be required due to packaging format availability, inventory constraints, or specific application requirements within the 16-22 AWG wire gauge range.

Key Parameters

Parameter	Value
Manufacturer Part Number	31890
Manufacturer	TE Connectivity AMP Connectors
Category	Terminals
Terminal Type	Circular
Stud/Tab Size	8 Stud
Wire Gauge	16-22 AWG
Termination Method	Crimp
Insulation Type	Insulated
Contact Material	Copper
Contact Finish	Tin
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 31890 is determined by the following critical parameters: terminal type (circular), stud size (8 stud), termination method (crimp), insulation type (insulated), contact material (copper), and contact finish (tin). Wire gauge compatibility is the primary variable allowing substitution within the 16-22 AWG range. All substitute parts must maintain ROHS3 compliance and MSL 1 rating. Packaging format differences (bulk versus cut tape) do not affect electrical or mechanical compatibility and represent valid substitution options.

Parameter Comparison

Parameter	31890 (Main Part)	2-31890-1 (Substitute)	94726 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	3M
Terminal Type	Circular	Circular	Circular
Stud/Tab Size	8 Stud	8 Stud	8 Stud
Wire Gauge	16-22 AWG	16-22 AWG	18-22 AWG
Termination Method	Crimp	Crimp	Crimp
Insulation Type	Insulated	Insulated	Insulated
Contact Material	Copper	Copper	Copper, ETP
Contact Finish	Tin	Tin	Tin
Color	Red	Red	Red
Thickness	0.031" (0.79mm)	0.031" (0.79mm)	0.030" (0.76mm)
Width - Outer Edges	0.312" (7.92mm)	0.312" (7.92mm)	0.330" (8.38mm)
Length - Overall	0.844" (21.44mm)	0.844" (21.44mm)	0.890" (22.61mm)
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Insulation Diameter	0.105" ~ 0.140" (2.67mm ~ 3.56mm)	0.105" ~ 0.140" (2.67mm ~ 3.56mm)	0.145" (3.68mm)
Material - Insulation	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Polyamide (PA), Nylon
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging	Bulk	Cut Tape (CT)	Bulk
Product Status	Active	Active	Active

Engineering Selection Recommendations

TE Connectivity 2-31890-1: This substitute part is electrically and mechanically identical to the main part 31890, with identical wire gauge range (16-22 AWG), stud size, thickness, width, and length specifications. The only difference is packaging format (cut tape versus bulk). Both parts carry ROHS3 compliance and MSL 1 rating. Selection of 2-31890-1 is appropriate when cut tape packaging is required for automated assembly processes or when bulk packaging is unavailable.

3M 94726: This substitute part maintains compatibility with the 8 stud circular terminal requirement and crimp termination method. However, the wire gauge range is restricted to 18-22 AWG, which excludes the 16-17 AWG wire sizes supported by the main part. The 94726 exhibits minor dimensional variations: thickness of 0.030" versus 0.031", width of 0.330" versus 0.312", length of 0.890" versus 0.844", and insulation diameter of 0.145" versus the 0.105"-0.140" range. The 94726 carries ROHS3 compliance and MSL 1 rating. Selection of 94726 is appropriate only when wire gauge requirements are limited to 18-22 AWG and dimensional tolerance variations are acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can the 2-31890-1 be used as a direct replacement for the 31890?

A: Yes. The 2-31890-1 is electrically and mechanically equivalent to the 31890. Both parts support 16-22 AWG wire gauges, feature identical 8 stud circular terminals, and maintain the same physical dimensions. The difference is packaging format only (cut tape versus bulk). Selection depends on assembly process requirements and inventory availability.

Q: What are the limitations of using the 3M 94726 as a substitute?

A: The 94726 has a restricted wire gauge range of 18-22 AWG, which excludes 16-17 AWG applications supported by the 31890. Additionally, the 94726 exhibits dimensional variations in thickness (0.030" versus 0.031"), width (0.330" versus 0.312"), length (0.890" versus 0.844"), and insulation diameter (0.145" versus 0.105"-0.140"). These variations may affect fit in space-constrained applications or assemblies with tight mechanical tolerances.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both the 2-31890-1 and 94726 are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity ratings, matching the compliance profile of the main part 31890.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (bulk versus cut tape) does not affect electrical or mechanical performance. The choice between packaging formats is determined by assembly process requirements, handling procedures, and inventory management practices.

Q: Which substitute should be selected for 16 AWG wire applications?

A: Only the TE Connectivity 2-31890-1 supports 16 AWG wire gauge. The 3M 94726 is limited to 18-22 AWG and cannot be used for 16 AWG applications.

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