TE Connectivity 103974-3 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 103974-3 is a 4-position rectangular receptacle connector designed for insulation displacement contact (IDC) termination with ribbon cable in the 22-26 AWG wire gauge range. This connector is part of the AMPMODU MTE series and features tin-lead contact finish with closed-end design. The part maintains active product status with 1080 pieces currently in stock.

Identifying equivalent and substitute parts is necessary when addressing inventory constraints, supply chain disruptions, or when alternative contact finish specifications better align with application requirements and compliance standards.

Key Parameters

Parameter	Value
Connector Type	Rectangular Receptacle
Number of Positions	4
Pitch	0.100" (2.54mm)
Cable Termination Method	IDC (Insulation Displacement Contact)
Wire Gauge Range	22-26 AWG
Wire Type	Ribbon Cable
Contact Finish	Tin-Lead or Tin
Contact Finish Thickness	100.0µin (2.54µm)
Mounting Type	Free Hanging (In-Line)
Series	AMPMODU MTE

Substitute Part Grouping Explanation

The substitute part 5-103974-3 is functionally equivalent to the main part 103974-3 based on the following critical parameters that determine substitutability:

Matching Parameters:

Connector type: Rectangular receptacle
Number of positions: 4
Pitch: 0.100" (2.54mm)
Cable termination: IDC
Wire gauge range: 22-26 AWG
Wire type: Ribbon cable
Contact finish thickness: 100.0µin (2.54µm)
Mounting type: Free Hanging (In-Line)
Series: AMPMODU MTE
Color: Black
Features: Closed end

Differentiating Parameter:

Contact finish: 103974-3 uses tin-lead; 5-103974-3 uses tin
RoHS compliance: 103974-3 is not applicable; 5-103974-3 is RoHS compliant

The substitution is valid where the contact finish specification and RoHS compliance requirements align with application needs.

Parameter Comparison

Parameter	103974-3 (Main Part)	5-103974-3 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Category	Rectangular Connectors	Rectangular Connectors
Series	AMPMODU MTE	AMPMODU MTE
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	4	4
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	1	1
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Cable Termination	IDC	IDC
Wire Type	Ribbon Cable	Ribbon Cable
Wire Gauge	22-26 AWG	22-26 AWG
Features	Closed End	Closed End
Contact Finish	Tin-Lead	Tin
Contact Finish Thickness	100.0µin (2.54µm)	100.0µin (2.54µm)
Color	Black	Black
Product Status	Active	Active
RoHS Status	Not applicable	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Packaging	Tube	Tube
Inventory Status	1080 Pcs New Original In Stock	5643 Pcs New Original In Stock

Engineering Selection Recommendations

Part 103974-3 (Tin-Lead Contact Finish): Select this part when applications do not require RoHS compliance or when tin-lead contact finish is explicitly specified in design documentation. This part maintains active product status and is available in moderate inventory quantities.

Part 5-103974-3 (Tin Contact Finish, RoHS Compliant): Select this part when RoHS compliance is required for the application or when regulatory requirements mandate lead-free contact finishes. This substitute offers significantly higher inventory availability (5643 pieces) and maintains full electrical and mechanical compatibility with the main part. Both parts are active products from the same manufacturer and series.

The selection between these parts is determined by compliance requirements and contact finish specifications rather than electrical or mechanical performance differences.

Frequently Asked Questions (FAQ)

Q: Are parts 103974-3 and 5-103974-3 electrically interchangeable?

A: Yes. Both parts are 4-position rectangular receptacle connectors with identical pitch (0.100"), IDC termination method, wire gauge range (22-26 AWG), and contact finish thickness (100.0µin). Electrical performance is equivalent.

Q: What is the primary difference between these two parts?

A: The primary difference is the contact finish material. Part 103974-3 uses tin-lead finish, while part 5-103974-3 uses tin finish and is RoHS compliant. The contact finish thickness remains identical at 100.0µin (2.54µm).

Q: Can I use part 5-103974-3 as a direct replacement for 103974-3?

A: Yes, provided your application does not explicitly require tin-lead contact finish and RoHS compliance is acceptable or required. Both parts are mechanically and electrically compatible within the AMPMODU MTE series.

Q: What does IDC termination mean?

A: IDC (Insulation Displacement Contact) termination is a method where the connector contacts pierce through the insulation of the ribbon cable without requiring stripping or pre-termination. Both parts support this termination method for 22-26 AWG ribbon cable.

Q: Are both parts suitable for ribbon cable applications?

A: Yes. Both parts are designed specifically for ribbon cable termination with wire gauges between 22-26 AWG. The closed-end design and IDC contact method are optimized for this cable type.

Q: What is the moisture sensitivity level, and why does it matter?

A: Both parts have MSL 1 (Unlimited), meaning they have unlimited shelf life and do not require special moisture control during storage or handling. This simplifies inventory management and logistics.

Q: Why is part 5-103974-3 listed as having higher inventory?

A: Part 5-103974-3 has 5643 pieces in stock compared to 1080 pieces for part 103974-3. The higher availability of the RoHS-compliant variant reflects current market demand and supply chain positioning.

Q: Can these connectors be used in applications requiring lead-free solder?

A: Part 5-103974-3 with tin contact finish is compatible with lead-free solder processes. Part 103974-3 with tin-lead finish may be used in applications where lead-containing solder is acceptable.

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