TE Connectivity 4-87977-2 Rectangular Connector Housing: Equivalent & Substitute Parts

Part Overview

The TE Connectivity 4-87977-2 is a 34-position rectangular connector receptacle housing designed for 0.100" (2.54mm) pitch applications. This component is part of the AMPMODU Mod IV series and features a black thermoplastic housing with crimp-style female socket contacts. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	34
Pitch	0.100" (2.54mm)
Number of Rows	2
Row Spacing	0.100" (2.54mm)
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 4-87977-2 is determined by strict equivalence across the following parameters: connector type (receptacle), contact type (female socket), number of positions (34), pitch (0.100"/2.54mm), number of rows (2), row spacing (0.100"/2.54mm), mounting type (free hanging in-line), contact termination (crimp), and moisture sensitivity level (MSL 1). All identified substitute parts meet these core electrical and mechanical requirements. Variations in color, insulation material, operating temperature range, and series designation do not affect functional interchangeability within the specified parameter set. Parts are grouped by manufacturer and product status to facilitate selection based on availability and compliance requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Positions	Pitch	Rows	Contact Type	Termination	Color	Product Status	RoHS Status
4-87977-2	TE Connectivity AMP Connectors	AMPMODU Mod IV	34	0.100" (2.54mm)	2	Female Socket	Crimp	Black	Obsolete	Vendor Undefined
102387-8	TE Connectivity AMP Connectors	AMPMODU Mod IV	34	0.100" (2.54mm)	2	Female Socket	Crimp	Black	Active	ROHS3 Compliant
1-926476-7	TE Connectivity AMP Connectors	AMPMODU Mod IV	34	0.100" (2.54mm)	2	Female Socket	Crimp	Black	Active	ROHS3 Compliant
0022566347	Molex	SL 70450	34	0.100" (2.54mm)	2	Female Socket	Crimp	Black	Active	ROHS3 Compliant
0901430034	Molex	C-Grid III 90143	34	0.100" (2.54mm)	2	Female Socket	Crimp	Black	Active	ROHS3 Compliant
1-104482-5	TE Connectivity AMP Connectors	AMPMODU	34	0.100" (2.54mm)	2	Female Socket	Crimp	Black	Discontinued at DiGi Electronics	RoHS Compliant
65043-020LF	Amphenol ICC (FCI)	Mini-PV™, Basics+	34	0.100" (2.54mm)	2	Female Socket	Crimp	Black	Active	RoHS Compliant
65239-017LF	Amphenol ICC (FCI)	DUBOX™, MezzSelect™, Basics+	34	0.100" (2.54mm)	2	Female Socket	Crimp	Blue	Active	RoHS Compliant

Engineering Selection Recommendations

Primary Substitutes (TE Connectivity AMPMODU Mod IV Series)

Part numbers 102387-8 and 1-926476-7 are direct series equivalents manufactured by TE Connectivity. Both are active products with ROHS3 compliance and identical electrical and mechanical specifications to the obsolete 4-87977-2. These parts are recommended as first-choice alternatives due to series continuity and manufacturer consistency. Part 102387-8 includes a polarizing key feature and is available in bulk packaging with higher inventory levels (1290 units).

Secondary Substitutes (Cross-Manufacturer Alternatives)

Molex part numbers 0022566347 and 0901430034 provide parametric equivalence with full electrical and mechanical compatibility. Both are active products with ROHS3 compliance. Part 0022566347 (SL 70450 series) operates across -40°C to 105°C, while part 0901430034 (C-Grid III 90143 series) operates across -55°C to 105°C. These alternatives are suitable for applications where manufacturer flexibility is acceptable.

Tertiary Substitutes (Extended Temperature Range)

Amphenol ICC (FCI) part 65239-017LF offers an extended operating temperature range of -65°C to 125°C and is available in high inventory (2625 units). This part is available in blue color only. Part 65043-020LF provides standard temperature performance (-40°C to 105°C) in black color with RoHS compliance.

Discontinued Alternative

TE Connectivity part 1-104482-5 is discontinued at DiGi Electronics and should not be selected for new designs despite RoHS compliance and adequate inventory.

Frequently Asked Questions (FAQ)

Q: Can the obsolete 4-87977-2 be directly replaced with 102387-8?

A: Yes. Part 102387-8 is a direct replacement within the same AMPMODU Mod IV series. Both parts share identical electrical and mechanical specifications: 34 positions, 0.100" pitch, 2-row configuration, female socket contacts, and crimp termination. The primary difference is that 102387-8 is an active product with ROHS3 compliance and includes a polarizing key feature.

Q: What is the significance of the polarizing key feature in 102387-8?

A: The polarizing key is a mechanical feature that prevents incorrect mating orientation. This feature is present in 102387-8 but not specified in the original 4-87977-2. Verify that existing mating connectors are compatible with polarized housings before substitution.

Q: Are Molex alternatives electrically compatible with the TE Connectivity original?

A: Yes. Molex parts 0022566347 and 0901430034 meet all core electrical and mechanical parameters: 34 positions, 0.100" pitch, 2-row configuration, female socket contacts, and crimp termination. Cross-manufacturer substitution is valid within these parameter constraints. Verify mechanical fit in the specific application before deployment.

Q: Why does 65239-017LF have a different color (blue) than the original (black)?

A: Color is a cosmetic parameter that does not affect electrical or mechanical function. Part 65239-017LF is available only in blue. If color matching is required for visual identification or assembly standards, select black alternatives such as 102387-8, 1-926476-7, 0022566347, 0901430034, or 65043-020LF.

Q: What is the difference between RoHS and ROHS3 compliance?

A: ROHS3 represents the current RoHS Directive 2011/65/EU with amendments. Parts marked ROHS3 Compliant meet the latest regulatory requirements. Parts marked RoHS Compliant may reference earlier versions. For new designs, ROHS3-compliant parts (102387-8, 1-926476-7, 0022566347, 0901430034) are preferred.

Q: Can I use 65239-017LF in applications requiring -65°C operation?

A: Yes. Part 65239-017LF operates across -65°C to 125°C, exceeding the original 4-87977-2 specification. This part is suitable for extended low-temperature applications. Verify that mating components and insulation materials also support this temperature range.

Q: What does "Contacts Not Included" mean for all these parts?

A: All listed housing parts are supplied without pre-installed contacts. Contacts must be sourced separately and crimped into the housing according to manufacturer specifications. Verify contact compatibility with the selected housing before assembly.

Q: Is 1-104482-5 a viable substitute despite being discontinued?

A: No. Although 1-104482-5 meets electrical and mechanical parameters and has adequate inventory, its discontinued status at DiGi Electronics indicates limited future availability. Select active products such as 102387-8, 1-926476-7, 0022566347, 0901430034, 65043-020LF, or 65239-017LF for new designs and ongoing production.

Q: What packaging considerations apply to these substitutes?

A: The original 4-87977-2 has undefined packaging. Substitute parts are available in bulk packaging (102387-8, 1-926476-7, 0022566347, 0901430034, 65043-020LF, 65239-017LF), which is standard for connector housings. Verify bulk packaging meets procurement and storage requirements for your application.

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