RA-4011 Rectangular Connector Housing - Equivalent & Substitute Parts

Part Overview

The RA-4011 is a 40-position rectangular connector housing manufactured by JST Sales America Inc. This receptacle housing is designed for 0.100" (2.54mm) pitch applications with a 2-row configuration and free-hanging in-line mounting. The part is currently active in production and RoHS compliant, making it suitable for applications requiring standard rectangular connector solutions. Substitute parts may be required due to inventory availability, lead time considerations, or specific application requirements that align with alternative manufacturer specifications.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	40
Pitch	0.100" (2.54mm)
Number of Rows	2
Row Spacing	0.100" (2.54mm)
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Color	Black
Operating Temperature Range	-55°C ~ 85°C
Insulation Material	Polybutylene Terephthalate (PBT), Glass Filled
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

The RA-4011 housing is substitutable with the TE Connectivity AMP Connectors part number 102387-9 based on the following critical parameters that determine functional compatibility:

Matching Parameters:

Connector type: Both are receptacle housings
Contact type: Both accommodate female socket contacts
Number of positions: Both support 40-position configurations
Pitch specification: Both use 0.100" (2.54mm) pitch
Row configuration: Both feature 2-row layouts
Row spacing: Both maintain 0.100" (2.54mm) row spacing
Mounting style: Both are free-hanging in-line designs
Contact termination: Both use crimp termination
Color: Both are black
Moisture sensitivity: Both rated MSL 1 (Unlimited)

The substitute part maintains electrical and mechanical compatibility through these standardized parameters, allowing direct substitution in applications where the RA-4011 is specified.

Parameter Comparison

Parameter	RA-4011 (JST)	102387-9 (TE Connectivity)
Manufacturer Part Number	RA-4011	102387-9
Manufacturer	JST Sales America Inc.	TE Connectivity AMP Connectors
Series	RA	AMPMODU Mod IV
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	40	40
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2
Row Spacing	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Termination	Crimp	Crimp
Color	Black	Black
Insulation Material	Polybutylene Terephthalate (PBT), Glass Filled	Thermoplastic
Operating Temperature Range	-55°C ~ 85°C	-65°C ~ 105°C
RoHS Status	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

Both the RA-4011 and 102387-9 are active production parts with current RoHS compliance certifications. The RA-4011 maintains RoHS compliance, while the 102387-9 meets ROHS3 compliance standards. Selection between these parts should be based on:

Inventory and Lead Time: The 102387-9 currently has higher inventory availability (2030 pcs) compared to the RA-4011 (1087 pcs), which may influence procurement decisions.

Operating Temperature Requirements: The 102387-9 supports an extended operating temperature range of -65°C ~ 105°C, compared to the RA-4011's -55°C ~ 85°C range. Applications requiring operation at temperatures below -55°C or above 85°C should specify the 102387-9.

Compliance Requirements: Both parts meet regulatory requirements for their respective applications. The ROHS3 compliance of the 102387-9 may be preferred in jurisdictions with updated regulatory requirements.

Material Specification: The RA-4011 uses glass-filled PBT insulation, while the 102387-9 uses thermoplastic insulation. Material selection should align with specific application environmental and mechanical requirements.

Frequently Asked Questions (FAQ)

Q: Can the 102387-9 directly replace the RA-4011 in existing designs?

A: Yes, the 102387-9 is mechanically and electrically compatible with the RA-4011 for applications within the RA-4011's operating temperature range of -55°C ~ 85°C. Both parts share identical pitch, row configuration, position count, and mounting specifications.

Q: What are the key differences between these two housings?

A: The primary differences are insulation material (PBT glass-filled vs. thermoplastic), operating temperature range (-55°C ~ 85°C vs. -65°C ~ 105°C), and compliance certification level (RoHS vs. ROHS3). The 102387-9 also includes a polarizing key feature.

Q: Are contacts included with these housings?

A: No. Both the RA-4011 and 102387-9 are housings only. Contacts must be sourced separately and crimped into the housing.

Q: Does the polarizing key on the 102387-9 affect compatibility?

A: The polarizing key is an additional feature on the 102387-9 that provides keying functionality. This feature does not prevent compatibility with standard mating connectors but may provide enhanced mating security in applications where keying is beneficial.

Q: Which part should be selected for high-temperature applications?

A: For applications requiring operation above 85°C or below -55°C, the 102387-9 with its -65°C ~ 105°C operating range is the appropriate selection.

Q: Are both parts RoHS compliant?

A: Yes. The RA-4011 is RoHS compliant, and the 102387-9 is ROHS3 compliant. Both meet RoHS requirements for their respective regulatory environments.

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