Molex 0879253000 Equivalent & Substitute Parts

Part Overview

The Molex 0879253000 is a 33-position backplane connector receptacle featuring female sockets and blade sockets for through-hole PCB mounting. This connector is part of the EXTreme PowerPlus 87925 series and is designed for applications requiring 24 signal and 9 power contacts with press-fit termination. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance, repairs, and legacy system support.

Key Parameters

Parameter	Value
Connector Type	Receptacle, Female Sockets and Blade Sockets
Number of Positions	33
Pitch	0.100" (2.54mm)
Number of Rows	4
Mounting Type	Through Hole
Termination	Press-Fit
Contact Layout	24 Signal, 9 Power
Contact Finish	Gold
Contact Finish Thickness	30.0µin (0.76µm)
Color	Black
Material Flammability Rating	UL94 V-0
Operating Temperature	-20°C ~ 105°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The Amphenol ICC (FCI) 51940-107LF qualifies as a direct substitute for the Molex 0879253000 based on the following critical parameters:

Matching Parameters:

Connector type: Receptacle with female sockets and blade sockets
Number of positions: 33
Pitch: 0.100" (2.54mm)
Number of rows: 4
Mounting type: Through hole
Contact layout: 24 signal, 9 power
Contact finish: Gold at 30.0µin (0.76µm) thickness
Color: Black
Material flammability rating: UL94 V-0
Operating temperature range: -20°C ~ 105°C
Moisture sensitivity level: 1 (Unlimited)

The substitute part maintains electrical and mechanical compatibility through identical position count, pitch spacing, row configuration, and contact specifications. Both connectors support the same signal and power distribution architecture.

Parameter Comparison

Parameter	Molex 0879253000	Amphenol ICC 51940-107LF
Manufacturer	Molex	Amphenol ICC (FCI)
Series	EXTreme PowerPlus 87925	PwrBlade®
Product Status	Obsolete	Active
Connector Type	Receptacle, Female Sockets and Blade Sockets	Receptacle, Female Sockets and Blade Sockets
Number of Positions	33	33
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	4	4
Mounting Type	Through Hole	Through Hole
Termination	Press-Fit	Press-Fit, Solder
Contact Layout	24 Signal, 9 Power	24 Signal, 9 Power
Contact Finish	Gold	Gold or Gold, GXT™
Contact Finish Thickness	30.0µin (0.76µm)	30.0µin (0.76µm)
Color	Black	Black
Material Flammability Rating	UL94 V-0	UL94 V-0
Operating Temperature	-20°C ~ 105°C	-20°C ~ 105°C
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	RoHS Compliant
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The Amphenol ICC 51940-107LF is the qualified substitute for the obsolete Molex 0879253000. Selection is based on:

Product Status: The Molex part is obsolete, while the Amphenol ICC part is active and currently in production, ensuring long-term availability and supply chain continuity.

Compliance Alignment: Both parts maintain UL94 V-0 flammability ratings and identical operating temperature ranges (-20°C ~ 105°C). The Amphenol ICC part meets RoHS compliance requirements, supporting modern regulatory standards.

Electrical and Mechanical Compatibility: Identical connector specifications across all critical parameters—33 positions, 0.100" pitch, 4-row configuration, 24 signal and 9 power contact layout, and gold contact finish at 30.0µin thickness—ensure direct functional equivalence in PCB applications.

Termination Flexibility: The substitute part supports both press-fit and solder termination options, providing installation flexibility beyond the original press-fit-only specification.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 51940-107LF directly replace the Molex 0879253000 in existing PCB designs?

A: Yes. Both connectors share identical position count (33), pitch spacing (0.100"), row configuration (4), and contact layout (24 signal, 9 power). PCB footprints and mounting hole patterns are compatible.

Q: What is the primary reason for substitution?

A: The Molex 0879253000 is obsolete. The Amphenol ICC 51940-107LF is an active product with ongoing manufacturing and supply availability.

Q: Are there differences in termination methods?

A: The original Molex part uses press-fit termination only. The Amphenol ICC substitute supports both press-fit and solder termination, offering installation flexibility for different manufacturing processes.

Q: Do both connectors meet the same environmental and compliance standards?

A: Both parts maintain UL94 V-0 flammability ratings, identical operating temperature ranges (-20°C ~ 105°C), and MSL 1 moisture sensitivity levels. The Amphenol ICC part meets current RoHS compliance requirements.

Q: What is the contact finish specification for both parts?

A: Both connectors feature gold contact finish at 30.0µin (0.76µm) thickness, ensuring equivalent electrical performance and corrosion resistance.

Q: Are there packaging differences between the two parts?

A: The Molex part is supplied without specified packaging. The Amphenol ICC part is supplied in trays, which is standard for active production components.

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