Hirose Electric A3C-26P-2DSA Equivalent & Substitute Parts

Part Overview

The Hirose Electric A3C-26P-2DSA is a rectangular connector header designed for through-hole mounting with 26 positions arranged in 2 rows at 0.079" (2.00mm) pitch. This connector features unshrouded male pins with gold-plated brass contacts, solder termination, and push-pull fastening. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	A3C-26P-2DSA
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Number of Positions	26
Number of Rows	2
Pitch - Mating	0.079" (2.00mm)
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature Range	-55°C ~ 85°C
Current Rating	1A
Voltage Rating	200V
Material Flammability Rating	UL94 V-0
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the A3C-26P-2DSA is determined by the following critical parameters that must remain consistent:

Connector type: Header with male pins
Number of positions: 26
Number of rows: 2
Pitch - mating: 0.079" (2.00mm)
Row spacing - mating: 0.079" (2.00mm)
Mounting type: Through hole
Termination: Solder
Fastening type: Push-pull
Shrouding: Unshrouded
Contact shape: Square
Insulation material: Polyamide (PA), Nylon or equivalent
Material flammability rating: UL94 V-0

The substitute parts identified fall into two categories:

Direct Equivalent: A3C-26P-2DSA(30) from Hirose Electric maintains identical electrical and mechanical specifications with active product status and RoHS compliance.

Cross-Manufacturer Alternatives: Samtec MTMM-113 series headers provide functional equivalence with variations in contact length, insulation material (Liquid Crystal Polymer), and enhanced current rating (3A vs. 1A). These parts maintain the core 26-position, 2-row, 2.00mm pitch configuration with push-pull fastening and through-hole mounting.

Parameter Comparison

Parameter	A3C-26P-2DSA	A3C-26P-2DSA(30)	MTMM-113-02-G-D-125	MTMM-113-02-L-D-149	MTMM-113-02-S-D-149	MTMM-113-02-T-D-150	MTMM-113-03-G-D-145	MTMM-113-03-S-D-149	MTMM-113-03-T-D-140	MTMM-113-03-T-D-153	MTMM-113-04-F-D-131
Manufacturer	Hirose	Hirose	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec
Number of Positions	26	26	26	26	26	26	26	26	26	26	26
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Contact Material	Brass	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Tin	Gold	Gold	Tin	Tin	Gold
Current Rating (Amps)	1A	1A	3A	3A	3A	3A	3A	3A	3A	3A	3A
Operating Temperature Range	-55°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement: A3C-26P-2DSA(30) is the primary equivalent, offering identical specifications with active product status and RoHS compliance. This part maintains the original Hirose A3 series design with 1A current rating and -55°C to 85°C operating range.

For Cross-Manufacturer Substitution: Samtec MTMM-113 series headers provide functional equivalence with the following considerations:

All MTMM-113 variants maintain the 26-position, 2-row, 2.00mm pitch configuration required for mechanical and electrical compatibility
MTMM-113 series offers enhanced current rating (3A vs. 1A), providing margin for higher-current applications
Operating temperature range extends to 125°C for most variants, supporting broader thermal environments
All substitute parts carry ROHS3 compliance certification
Contact material differs (Phosphor Bronze vs. Brass), with gold or tin plating options available
Insulation material is Liquid Crystal Polymer (LCP) instead of Polyamide, offering improved dimensional stability

Selection by Application Requirements:

Standard applications with 1A current: A3C-26P-2DSA(30)
Higher current applications (up to 3A): MTMM-113 series with gold-plated contacts (MTMM-113-02-G-D-125, MTMM-113-03-G-D-145)
Extended temperature range (-55°C to 125°C): MTMM-113-02-G-D-125, MTMM-113-02-L-D-149, MTMM-113-02-S-D-149, MTMM-113-03-G-D-145, MTMM-113-03-S-D-149, MTMM-113-04-F-D-131
Cost-optimized with tin plating: MTMM-113-02-T-D-150, MTMM-113-03-T-D-140, MTMM-113-03-T-D-153

Frequently Asked Questions (FAQ)

Q: Can MTMM-113 series headers directly replace the A3C-26P-2DSA in existing designs?

A: Yes, for mechanical and electrical compatibility. All MTMM-113 variants maintain the 26-position, 2-row, 2.00mm pitch configuration with identical mounting type, termination, and fastening. Contact material and plating differ, but both meet UL94 V-0 flammability requirements. Verify current and temperature requirements for your specific application.

Q: What is the difference between gold-plated and tin-plated contact finishes?

A: Gold-plated contacts (MTMM-113 variants with -G- or -L- designations) provide superior corrosion resistance and lower contact resistance, suitable for low-signal applications. Tin-plated contacts (MTMM-113 variants with -T- designation) offer cost efficiency and are suitable for standard industrial applications. Both finishes meet UL94 V-0 requirements.

Q: Are there differences in contact length between substitute parts?

A: Yes. The A3C-26P-2DSA has contact length - mating of 0.138" (4.60mm). MTMM-113 variants range from 0.125" to 0.153" mating contact length. Verify PCB pad design and mating connector specifications to ensure compatibility with your application.

Q: What is the significance of the MTMM-113 cuttable feature?

A: The MTMM-113 series is cuttable, allowing customization of row count if needed. For the 26-position, 2-row configuration, this feature does not affect compatibility with the A3C-26P-2DSA.

Q: Does the higher current rating of MTMM-113 (3A vs. 1A) affect compatibility?

A: No. Higher current rating indicates enhanced capability and does not affect electrical compatibility. Applications designed for 1A operation remain fully compatible with 3A-rated connectors.

Q: Are all substitute parts RoHS compliant?

A: A3C-26P-2DSA(30) is RoHS Compliant. All Samtec MTMM-113 variants are ROHS3 Compliant. The original A3C-26P-2DSA does not specify RoHS status due to its obsolete classification.

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