TE Connectivity 103783-7 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 103783-7 is a 14-position rectangular connector header from the AMPMODU Mod II series, designed for through-hole board-to-board or cable applications with 0.100" (2.54mm) pitch. This connector features male pins with gold-plated mating contacts and tin-lead plated posts, rated for 3A current and operating temperatures from -65°C to 105°C.

The 103783-7 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or repair requirements for legacy systems utilizing this connector.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Number of Positions	14
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Contact Type	Male Pin
Mounting Type	Through Hole
Termination	Solder
Current Rating	3A
Operating Temperature	-65°C ~ 105°C
Contact Finish - Mating	Gold
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitute parts for the 103783-7 must maintain electrical and mechanical compatibility based on the following critical parameters:

Connector geometry: 14 positions, 2 rows, 0.100" (2.54mm) pitch and row spacing
Contact configuration: Male pin type with gold-plated mating surface
Mounting and termination: Through-hole solder termination
Electrical performance: 3A current rating, -65°C to 105°C operating range
Safety compliance: UL94 V-0 flammability rating

The primary substitute identified is TE Connectivity 5-146261-7, which maintains all critical electrical and mechanical parameters while offering improved product status and regulatory compliance.

Parameter Comparison

Parameter	103783-7 (Main Part)	5-146261-7 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	AMPMODU Mod II	AMPMODU Mod II
Product Status	Obsolete	Active
Connector Type	Header, Breakaway	Header, Breakaway
Number of Positions	14	14
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Contact Type	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Length - Mating	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.090" (2.29mm)	0.090" (2.29mm)
Overall Contact Length	0.410" (10.41mm)	0.410" (10.41mm)
Insulation Height	0.090" (2.29mm)	0.090" (2.29mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)
Contact Finish - Post	Tin-Lead	Tin
Contact Material	Copper Alloy	Copper Alloy
Insulation Material	Thermoplastic	Liquid Crystal Polymer (LCP)
Operating Temperature	-65°C ~ 105°C	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
Current Rating	3A	3A
Contact Finish Thickness - Post	100.0µin (2.54µm)	100.0µin (2.54µm)
RoHS Status	RoHS non-compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The TE Connectivity 5-146261-7 is the direct substitute for the obsolete 103783-7. Both connectors maintain identical electrical and mechanical specifications across all critical parameters including connector geometry, contact configuration, current rating, and operating temperature range.

The 5-146261-7 offers two significant advantages:

Product Status: Active product with ongoing manufacturer support and availability, eliminating supply chain risk associated with obsolete components.
Regulatory Compliance: RoHS compliant, meeting current environmental and regulatory requirements for new designs and production.

The insulation material differs (Liquid Crystal Polymer in the substitute versus Thermoplastic in the original), and the post contact finish is pure tin rather than tin-lead. These material changes do not affect electrical or mechanical compatibility and reflect modern manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the 5-146261-7 be used as a direct replacement for the 103783-7?

A: Yes. Both connectors share identical pitch (0.100"), position count (14), row configuration (2 rows), contact type (male pin), mounting method (through-hole), and electrical ratings (3A, -65°C to 105°C). The connectors are mechanically and electrically interchangeable.

Q: What is the difference in insulation material between these parts?

A: The 103783-7 uses thermoplastic insulation, while the 5-146261-7 uses Liquid Crystal Polymer (LCP). Both materials meet UL94 V-0 flammability requirements and maintain the same mechanical and thermal performance within the specified operating range.

Q: Does the change from tin-lead to tin plating on the posts affect solderability?

A: No. Both finishes are standard for through-hole solder termination and provide equivalent solderability. The tin finish on the 5-146261-7 reflects current manufacturing practices and RoHS compliance requirements.

Q: Is the 5-146261-7 RoHS compliant?

A: Yes. The 5-146261-7 is RoHS compliant, whereas the 103783-7 is not. This makes the substitute suitable for applications requiring environmental and regulatory compliance.

Q: Are there any packaging differences?

A: The 103783-7 packaging information is not specified in the original documentation. The 5-146261-7 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: What is the moisture sensitivity level for these connectors?

A: Both connectors have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without special moisture control measures.

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