316-87-131-41-011101 Rectangular Connector Socket - Equivalent & Substitute Parts

Part Overview

The 316-87-131-41-011101 is a 31-position socket connector manufactured by Preci-Dip, designed for board-to-board applications with 0.100" (2.54mm) pitch through-hole mounting. This connector features gold-plated mating contacts, tin-plated posts, and operates across the industrial temperature range of -55°C to 125°C. The product maintains Active status and is RoHS3 compliant.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the primary connector's specifications, enabling direct replacement in applications where form factor variations are acceptable within design constraints.

Key Parameters

Parameter	Value
Connector Type	Socket (Female)
Number of Positions	31
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Current Rating	3A
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The ESS-131-T-05 manufactured by Samtec Inc. qualifies as a substitute for the 316-87-131-41-011101 based on the following alignment of critical parameters:

Matching Parameters:

Connector type: Both are female socket connectors
Number of positions: Both provide 31 positions
Pitch specification: Both maintain 0.100" (2.54mm) mating pitch
Mounting method: Both utilize through-hole solder termination
Contact finish: Both feature gold-plated mating surfaces
Operating temperature: Both rated -55°C to 125°C
Flammability compliance: Both meet UL94 V-0
Regulatory status: Both are RoHS3 compliant and EAR99 classified

Distinguishing Characteristics: The ESS-131-T-05 is classified as an elevated socket connector with a reduced insulation height of 0.500" (12.70mm) compared to the 316-87-131-41-011101 at 0.709" (18.00mm). The contact post length differs at 0.173" (4.40mm) versus 0.126" (3.20mm). These dimensional variations require verification against specific PCB layout and mating component specifications before substitution.

Parameter Comparison

Parameter	316-87-131-41-011101 (Preci-Dip)	ESS-131-T-05 (Samtec Inc.)
Connector Type	Socket	Elevated Socket
Number of Positions	31	31
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Finish - Mating	Gold (Flash)	Gold (10.0µin / 0.25µm)
Insulation Height	0.709" (18.00mm)	0.500" (12.70mm)
Contact Length - Post	0.126" (3.20mm)	0.173" (4.40mm)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Contact Material	Beryllium Copper	Beryllium Copper
Contact Finish - Post	Tin	Tin
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
ECCN Classification	EAR99	EAR99

Engineering Selection Recommendations

Both the 316-87-131-41-011101 and ESS-131-T-05 maintain Active product status with full RoHS3 compliance and EAR99 export classification. Selection between these connectors depends on PCB design constraints related to insulation height and contact post length.

The 316-87-131-41-011101 provides a taller insulation profile (0.709") suitable for applications requiring greater clearance above the PCB surface. The ESS-131-T-05 offers a compact elevated socket design (0.500" insulation height) with extended contact posts (0.173"), accommodating designs with space limitations or requiring deeper PCB penetration.

Both connectors support identical mating pitch, position count, and temperature operating range. Gold contact finish specifications differ in thickness specification detail but both provide corrosion resistance for reliable signal transmission. Substitution is valid when PCB layout, mating component geometry, and clearance requirements align with the dimensional profile of the selected connector.

Frequently Asked Questions (FAQ)

Q: Can the ESS-131-T-05 directly replace the 316-87-131-41-011101 on existing PCBs?

A: Direct replacement requires verification of three dimensional factors: (1) PCB hole pattern compatibility at 0.100" (2.54mm) pitch remains identical; (2) available vertical clearance above the PCB accommodates the 0.500" insulation height of the ESS-131-T-05 versus the 0.709" height of the original; (3) mating component contact depth compatibility with the 0.173" post length versus the original 0.126" post length.

Q: What is the difference between "Flash" and "10.0µin" gold plating specifications?

A: Both connectors provide gold-plated mating contacts for corrosion resistance and signal integrity. The 316-87-131-41-011101 specifies flash plating thickness without numerical detail. The ESS-131-T-05 specifies 10.0µin (0.25µm) thickness. Both meet functional requirements for 31-position socket connector applications within the stated operating temperature range.

Q: Are both connectors suitable for the same current and temperature applications?

A: The 316-87-131-41-011101 specifies 3A current rating. The ESS-131-T-05 does not provide a current rating specification in available documentation. Both connectors operate across -55°C to 125°C and meet UL94 V-0 flammability requirements. Current capacity verification for the ESS-131-T-05 is required before substitution in applications exceeding 3A per contact.

Q: What insulation materials are used in each connector?

A: The 316-87-131-41-011101 uses Polycyclohexylenedimethylene Terephthalate (PCT) with polyester and glass filler. The ESS-131-T-05 uses Liquid Crystal Polymer (LCP). Both materials meet UL94 V-0 flammability standards. Material selection affects mechanical properties and environmental resistance; verify compatibility with specific application requirements.

Q: Do both connectors have identical packaging and inventory availability?

A: Both connectors are supplied in Bulk packaging. The 316-87-131-41-011101 has 669 pieces in stock. The ESS-131-T-05 has 1175 pieces in stock. Packaging format is identical; inventory levels differ based on current supply status.

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