TE Connectivity 2-171826-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 2-171826-3 is an active rectangular connector header designed for through-hole, right-angle mounting applications. This shrouded, single-wall header accommodates 3 positions at 2.5mm pitch and features male pin contacts with solder termination. The connector is specified for general-purpose applications requiring board-to-cable/wire interconnection. Equivalent and substitute parts are identified based on matching core electrical and mechanical parameters to enable component selection flexibility while maintaining functional compatibility within specified tolerances.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	3
Number of Rows	1
Pitch - Mating	0.098" (2.50mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 1 Wall
Termination	Solder
Contact Material	Brass
Insulation Material	Polyamide (PA66), Nylon 6/6
Material Flammability Rating	UL94 V-0
Current Rating	2A
Voltage Rating	250VAC, 350VDC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 2-171826-3 are identified based on the following core substitution criteria:

Primary Matching Parameters:

Connector type: Header
Contact type: Male pin
Number of positions: 3
Number of rows: 1
Mounting type: Through hole, right angle
Shrouding: Shrouded - 1 wall
Termination: Solder
Contact material: Brass
Insulation material: Polyamide/Nylon
Material flammability rating: UL94 V-0 or equivalent
RoHS3 compliance
Moisture sensitivity level: 1

Pitch Consideration: The main part operates at 0.098" (2.50mm) pitch. Substitute parts identified operate at 0.100" (2.54mm) pitch. While pitch differs by 0.002" (0.04mm), these parts are functionally equivalent for applications where mating connector tolerance and board layout accommodate the minor pitch variation. Both pitch specifications are standard in rectangular connector design and represent common industry standards.

Electrical Ratings: Substitute parts from Molex do not specify current or voltage ratings in the provided data. The TE Connectivity main part specifies 2A at 250VAC/350VDC. Substitution is based on structural and material compatibility rather than electrical rating equivalence.

Parameter Comparison

Parameter	TE Connectivity 2-171826-3	Molex 0022053031	Molex 0022122034	Molex 1718571003
Manufacturer	TE Connectivity	Molex	Molex	Molex
Connector Type	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	3	3	3	3
Number of Rows	1	1	1	1
Pitch - Mating	0.098" (2.50mm)	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
Shrouding	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall
Termination	Solder	Solder	Solder	Solder
Contact Material	Brass	Brass	Brass	Brass
Insulation Material	Polyamide (PA66), Nylon 6/6	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-2
Contact Finish - Mating	Tin	Tin	Gold	Gold
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

Molex 0022053031 and 0022122034: Both parts are functionally equivalent to the TE Connectivity 2-171826-3 for applications accommodating 0.100" (2.54mm) pitch. Both maintain UL94 V-0 flammability rating, ROHS3 compliance, and MSL 1 classification. The 0022053031 features tin contact finish matching the main part specification. The 0022122034 features gold contact finish on mating surfaces, providing enhanced corrosion resistance in applications requiring extended contact durability. Both parts are produced under Molex KK254 and 7478 series specifications and are suitable for automotive, general purpose, medical, and telecommunications applications.

Molex 1718571003: This part maintains structural and material compatibility with the main part but differs in material flammability rating (UL94 V-2 versus UL94 V-0). Selection of this part is appropriate for applications where UL94 V-2 rating is acceptable. The part features gold contact finish and operates at 0.100" (2.54mm) pitch. All parts maintain active product status and full RoHS3 compliance.

Pitch Accommodation: Selection of any substitute part requires confirmation that the mating connector and printed circuit board layout accommodate 0.100" (2.54mm) pitch spacing. The 0.002" (0.04mm) pitch difference between the main part and substitutes represents a tolerance consideration in mechanical interface design.

Frequently Asked Questions (FAQ)

Q: Can Molex 0022053031 directly replace TE Connectivity 2-171826-3 in existing designs? A: Direct replacement is possible if the mating connector and board layout accommodate 0.100" (2.54mm) pitch. The 0.002" pitch difference requires verification of mechanical clearance and connector compatibility. Both parts share identical connector type, contact configuration, mounting style, and shrouding specifications.

Q: What is the difference between Molex 0022053031 and 0022122034? A: Both parts are identical in structure, pitch, and mounting configuration. The primary difference is contact finish: 0022053031 features tin finish matching the TE Connectivity main part, while 0022122034 features gold finish on mating surfaces. Gold finish provides enhanced corrosion resistance and is suitable for applications requiring extended contact life or exposure to corrosive environments.

Q: Why does Molex 1718571003 have a UL94 V-2 rating instead of V-0? A: The UL94 V-2 rating indicates different material formulation in the insulation body. V-2 materials self-extinguish but may drip when exposed to flame, whereas V-0 materials self-extinguish without dripping. Selection depends on application flammability requirements. Applications requiring V-0 rating should use 0022053031 or 0022122034.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All identified substitute parts (Molex 0022053031, 0022122034, and 1718571003) are ROHS3 compliant, matching the TE Connectivity 2-171826-3 specification.

Q: What is the impact of the 0.002" pitch difference on board design? A: The pitch difference between 2.50mm (main part) and 2.54mm (substitute parts) requires board layout verification. Printed circuit board hole spacing, mating connector specifications, and mechanical clearances must accommodate the substitute part pitch. This is a design consideration rather than a functional limitation.

Q: Do the substitute parts have specified current and voltage ratings? A: The provided Molex part data does not include current or voltage ratings. The TE Connectivity main part specifies 2A at 250VAC/350VDC. Electrical rating verification through Molex technical documentation is recommended for applications with specific electrical requirements.

Q: Are all parts suitable for automotive applications? A: Molex 0022053031, 0022122034, and 1718571003 are specified for automotive applications. The TE Connectivity 2-171826-3 is specified for general-purpose applications. Automotive-specific requirements should be confirmed with application specifications.

Q: What is Moisture Sensitivity Level (MSL) 1? A: MSL 1 indicates unlimited shelf life without moisture control requirements. All identified parts carry MSL 1 classification, eliminating moisture sensitivity considerations in storage and handling.

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