TE Connectivity 2-146311-0 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 2-146311-0 is a right-angle rectangular connector header designed for through-hole mounting applications. This component features 40 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing, suitable for board-to-board or cable interconnection. The part is classified as Active product status with 1107 units currently in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design requirements necessitate alternative contact finishes or operating temperature ranges. The parts listed below maintain electrical and mechanical compatibility within the specified parameter tolerances for this connector category.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Number of Positions	40
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Press-Fit, Solder
Fastening Type	Push-Pull
Contact Shape	Square
Current Rating	3A
Operating Temperature	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0
Insulation Color	Black

Substitute Part Grouping Explanation

Substitution eligibility for rectangular connector headers is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Number of Positions: 40
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole, Right Angle
Fastening Type: Push-Pull
Contact Shape: Square
Material Flammability Rating: UL94 V-0

Allowable Variation Parameters:

Contact Finish - Mating: Gold or Tin (both acceptable for signal integrity)
Contact Finish - Post: Tin, Tin-Lead, or Gold (all acceptable for solder termination)
Contact Material: Copper Alloy, Brass, or Phosphor Bronze (all acceptable for electrical performance)
Insulation Material: Thermoplastic Glass Filled or Polybutylene Terephthalate (both acceptable)
Operating Temperature Range: May extend beyond -65°C ~ 105°C (wider range acceptable)
Termination: Solder or Press-Fit Solder (both acceptable)
Product Status: Active or Obsolete (both acceptable for functional equivalence)

The four substitute parts listed below satisfy all mandatory matching parameters and fall within allowable variation ranges for contact finishes, materials, and operating conditions.

Parameter Comparison

Parameter	2-146311-0 (Main)	7-146311-0	A1-40PA-2.54DS(71)	TSW-120-25-G-D-RA	TSW-120-25-T-D-RA
Manufacturer	TE Connectivity AMP	TE Connectivity AMP	Hirose Electric	Samtec Inc.	Samtec Inc.
Series	AMPMODU Mod II	AMPMODU Mod II	A1	TSW	TSW
Product Status	Active	Obsolete	Active	Active	Active
Number of Positions	40	40	40	40	40
Number of Rows	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Press-Fit, Solder	Press-Fit, Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Shape	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Tin
Contact Finish - Post	Tin-Lead	Tin	Tin	Gold	Tin
Contact Material	Copper Alloy	Copper Alloy	Brass	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Operating Temperature	-65°C ~ 105°C	-65°C ~ 105°C	-55°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black
Current Rating	3A	3A	3A	Not specified	Not specified
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory (Pcs)	1107	913	922	907	962

Engineering Selection Recommendations

TE Connectivity 7-146311-0 (Direct Manufacturer Substitute)

The 7-146311-0 is a direct equivalent from the same manufacturer series (AMPMODU Mod II) with identical electrical and mechanical specifications. The primary distinction is product status classification as Obsolete. This part achieves RoHS Compliance, whereas the main part is RoHS non-compliant. Contact finish on the post is Tin rather than Tin-Lead. This substitute is suitable for applications where RoHS compliance is required and inventory availability permits.

Hirose Electric A1-40PA-2.54DS(71) (Cross-Manufacturer Substitute)

The A1-40PA-2.54DS(71) maintains all critical connector parameters with Active product status and RoHS Compliance. The insulation material differs (Polybutylene Terephthalate versus Thermoplastic Glass Filled), and the operating temperature range is narrower (-55°C ~ 85°C versus -65°C ~ 105°C). Contact material is Brass rather than Copper Alloy. This substitute is appropriate for applications operating within the -55°C ~ 85°C range where Hirose sourcing is preferred.

Samtec TSW-120-25-G-D-RA (Cross-Manufacturer Substitute)

The TSW-120-25-G-D-RA offers Active product status with ROHS3 Compliance and an extended operating temperature range (-55°C ~ 125°C). Contact material is Phosphor Bronze with Gold finish on both mating and post surfaces. Insulation material is Polybutylene Terephthalate. This substitute is suitable for applications requiring extended high-temperature operation and gold-plated contacts.

Samtec TSW-120-25-T-D-RA (Cross-Manufacturer Substitute)

The TSW-120-25-T-D-RA provides Active product status with ROHS3 Compliance and operating temperature range of -55°C ~ 105°C. Contact finishes are Tin on both mating and post surfaces. Contact material is Phosphor Bronze with Polybutylene Terephthalate insulation. This substitute is appropriate for applications where tin-plated contacts are acceptable and Samtec sourcing is preferred.

Frequently Asked Questions (FAQ)

Q: Can the 7-146311-0 be used as a direct replacement for the 2-146311-0?

A: Yes. The 7-146311-0 maintains identical connector geometry, pitch spacing, position count, and mounting configuration. The primary differences are product status (Obsolete versus Active) and RoHS compliance status. Electrical and mechanical performance are equivalent.

Q: What is the significance of the operating temperature range difference between the main part and the Hirose A1-40PA-2.54DS(71)?

A: The main part operates from -65°C to 105°C, while the Hirose part operates from -55°C to 85°C. The Hirose part has a narrower range. Selection depends on application requirements. If your application operates within -55°C to 85°C, the Hirose part is suitable. If your application requires operation below -55°C or above 85°C, the Hirose part is not appropriate.

Q: Are the contact material differences between substitutes significant?

A: Contact materials (Copper Alloy, Brass, Phosphor Bronze) are all acceptable for this connector category and provide equivalent electrical performance. Material selection affects mechanical durability and corrosion resistance characteristics. All listed materials meet UL94 V-0 flammability requirements.

Q: What does RoHS Compliance mean for connector selection?

A: RoHS (Restriction of Hazardous Substances) Compliance indicates the part does not contain lead, mercury, cadmium, or other restricted substances. The main part (2-146311-0) is RoHS non-compliant, while all substitute parts are RoHS Compliant or ROHS3 Compliant. Selection depends on regulatory requirements for your application or end market.

Q: Can I use the Samtec TSW-120-25-G-D-RA in place of the main part if my application requires extended temperature operation?

A: Yes. The Samtec TSW-120-25-G-D-RA operates from -55°C to 125°C, which extends the upper temperature limit to 125°C compared to the main part's 105°C limit. All other critical parameters (position count, pitch, mounting type, fastening) are identical. This substitute is suitable if your application requires operation above 105°C.

Q: What is the difference between Press-Fit and Solder termination?

A: The main part supports both Press-Fit and Solder termination methods. The Hirose and Samtec substitutes support Solder termination only. If your PCB design requires press-fit termination, the 7-146311-0 (which also supports both methods) is the appropriate choice.

Q: Are there packaging differences between the main part and substitutes?

A: The main part packaging is not specified. The 7-146311-0 packaging is not specified. The Hirose A1-40PA-2.54DS(71) is packaged in Trays. The Samtec parts (TSW-120-25-G-D-RA and TSW-120-25-T-D-RA) are packaged in Bulk. Packaging affects handling, storage, and ordering quantities but does not affect electrical or mechanical performance.

Q: Which substitute should I select if I need RoHS compliance and the narrowest operating temperature range?

A: The Hirose A1-40PA-2.54DS(71) is RoHS Compliant with an operating range of -55°C to 85°C, which is the narrowest among all options. This part is suitable if your application operates within this temperature window and RoHS compliance is required.

Q: Can I mix different substitute parts in the same assembly?

A: All listed parts maintain identical connector geometry and pitch spacing, allowing physical interchangeability. However, mixing different manufacturers or contact finishes in the same assembly may introduce inconsistencies in contact resistance and mating force characteristics. Engineering practice recommends standardizing on a single part number per assembly.

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