TE Connectivity 102977-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 102977-4 is an 8-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 102977-4 is classified as obsolete. Locating equivalent substitute parts is necessary to support legacy system maintenance, design updates, and continued component availability for production environments.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Number of Positions	8
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 Range	-65°C ~ 105°C
Contact Finish - Mating	Gold
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the 102977-4 is determined by strict alignment with the following electrical and mechanical parameters:

Connector Type & Configuration: Header, Breakaway format with 8 positions in 2 rows
Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
Contact Characteristics: Male pin contact type with gold-plated mating surface
Mounting & Termination: Through-hole solder termination
Electrical Rating: 3A current capacity and -65°C to 105°C operating range
Flammability Compliance: UL94 V-0 material rating

The substitute part 5-146253-4 meets all these core parameters and is therefore electrically and mechanically compatible with the 102977-4 in equivalent applications.

Parameter Comparison

Parameter	102977-4 (Main Part)	5-146253-4 (Substitute)	Compatibility
Connector Type	Header, Breakaway	Header, Breakaway	Match
Number of Positions	8	8	Match
Number of Rows	2	2	Match
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	Match
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	Match
Contact Type	Male Pin	Male Pin	Match
Mounting Type	Through Hole	Through Hole	Match
Termination	Solder	Solder	Match
Contact Length - Mating	0.318" (8.08mm)	0.318" (8.08mm)	Match
Contact Length - Post	0.125" (3.18mm)	0.125" (3.18mm)	Match
Overall Contact Length	0.533" (14.65mm)	0.533" (14.65mm)	Match
Insulation Height	0.090" (2.29mm)	0.090" (2.29mm)	Match
Contact Shape	Square	Square	Match
Contact Finish - Mating	Gold	Gold	Match
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	Match
Contact Finish - Post	Tin-Lead	Tin	Functionally Equivalent
Contact Material	Copper Alloy	Copper Alloy	Match
Current Rating	3A	3A	Match
Operating Temperature Range	-65°C ~ 105°C	-65°C ~ 105°C	Match
Material Flammability Rating	UL94 V-0	UL94 V-0	Match
Insulation Color	Black	Black	Match
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Match
ECCN	EAR99	EAR99	Match
HTSUS Code	8536.69.4040	8536.69.4040	Match

Engineering Selection Recommendations

The 102977-4 is an obsolete product. The TE Connectivity 5-146253-4 is the manufacturer-recommended substitute and is classified as active product status, ensuring ongoing availability and supply chain support.

Key differentiators between the main part and substitute:

Product Status: The 102977-4 is obsolete; the 5-146253-4 is active and currently manufactured.
RoHS Compliance: The 102977-4 is RoHS non-compliant. The 5-146253-4 is ROHS3 compliant, meeting current environmental regulations.
Insulation Material: The 102977-4 uses thermoplastic insulation; the 5-146253-4 uses Liquid Crystal Polymer (LCP), which provides improved thermal and mechanical properties.
Contact Finish - Post: The 102977-4 features tin-lead plating; the 5-146253-4 uses tin plating, which is compatible with lead-free soldering processes.

All electrical and mechanical parameters remain equivalent. The 5-146253-4 is suitable for direct substitution in applications currently using the 102977-4.

Frequently Asked Questions (FAQ)

Q: Can the 5-146253-4 be used as a direct replacement for the 102977-4?

A: Yes. The 5-146253-4 meets all electrical and mechanical specifications of the 102977-4, including connector type, position count, pitch, contact type, current rating, and operating temperature range. The substitute is electrically and mechanically compatible.

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

A: The 102977-4 uses thermoplastic insulation, while the 5-146253-4 uses Liquid Crystal Polymer (LCP). LCP provides superior thermal stability and mechanical strength, making it suitable for demanding applications.

Q: Why is the contact finish different on the post?

A: The 102977-4 uses tin-lead plating on the post; the 5-146253-4 uses tin plating. Tin plating is compatible with lead-free soldering processes and meets current environmental standards. Both finishes provide equivalent electrical performance.

Q: Is the 5-146253-4 RoHS compliant?

A: Yes. The 5-146253-4 is ROHS3 compliant, meeting current environmental regulations. The 102977-4 is RoHS non-compliant. For new designs or applications requiring RoHS compliance, the 5-146253-4 is the appropriate choice.

Q: Are there any packaging differences?

A: The 102977-4 packaging is not specified. The 5-146253-4 is supplied in bulk packaging. Confirm packaging requirements with your supplier for specific application needs.

Q: What is the current availability of these parts?

A: The 102977-4 has 688 pieces in stock as new original inventory. The 5-146253-4 has 944 pieces in stock as new original inventory. The 5-146253-4, being an active product, offers better long-term availability assurance.

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