A3-20DA-2SV Equivalent & Substitute Parts

Part Overview

The Hirose Electric A3-20DA-2SV is a 20-position receptacle connector with 0.079" (2.00mm) pitch, designed for surface mount applications in board-to-board and cable interconnect configurations. This part operates across -55°C to 85°C with a 1A current rating and 200VAC voltage specification. The A3-20DA-2SV is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Active alternatives from Hirose and other manufacturers provide compatible electrical and mechanical interfaces while offering improved product status and compliance certifications.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	20
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature Range	-55°C ~ 85°C
Current Rating	1A
Voltage Rating	200VAC
Material Flammability Rating	UL94 V-0
Insulation Material	Polyphenylene Sulfide (PPS)
Contact Material	Phosphor Bronze
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment across the following critical parameters: connector type (receptacle), contact type (female socket), number of positions (20), mating pitch (0.079" / 2.00mm), row configuration (2 rows with 0.079" spacing), mounting type (surface mount), termination method (solder), fastening type (push-pull), contact finish (gold), and material flammability rating (UL94 V-0).

All substitute parts listed maintain these core mechanical and electrical specifications. Variations in secondary parameters such as contact finish thickness, insulation height, operating temperature range, current rating, voltage rating, and insulation material do not preclude substitution when the primary interface parameters remain constant. Packaging format (tube, tray, tape & reel) and product status (active vs. obsolete) are independent of functional compatibility but affect procurement and supply chain considerations.

Parameter Comparison

Parameter	A3-20DA-2SV	A3-20DA-2SV(71)	150220-2000-RB	150220-2020-RB	150220-2020-RB-WD	55510-020LF	55510-020TRLF	55510-120LF	55510-320LF	55510-320TRLF	M22-6341042
Manufacturer	Hirose	Hirose	3M	3M	3M	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Harwin
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle, Bottom or Top Entry
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	20	20	20	20	20	20	20	20	20	20	20
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)
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
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	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
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 Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
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
Operating Temperature Range	-55°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C
Current Rating (Amps)	1A	1A	1A	1A	1A	2A	2A	2A	2A	2A	2A
Voltage Rating	200VAC	200VAC	500VDC	500VDC	500VDC	200V	200V	200V	200V	200V	500VAC
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: A3-20DA-2SV(71)

The A3-20DA-2SV(71) from Hirose is the direct equivalent to the obsolete A3-20DA-2SV. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The packaging format (tube) differs from the original, but the connector interface remains unchanged. This option is preferred for applications requiring minimal design validation and maximum compatibility assurance.

Alternative Recommendations by Application:

For applications requiring extended operating temperature range (-55°C to 125°C), the Amphenol ICC Minitek® 2.00mm series (55510-020LF, 55510-020TRLF, 55510-120LF, 55510-320LF, 55510-320TRLF) provides enhanced thermal performance. These parts are RoHS compliant and offer 2A current rating, exceeding the original specification. The 55510-320TRLF variant includes pick-and-place features and tape & reel packaging for automated assembly.

For applications requiring higher voltage ratings (500VDC or 500VAC), the 3M 1502 series (150220-2000-RB, 150220-2020-RB, 150220-2020-RB-WD) and Harwin M22-6341042 provide enhanced electrical performance. The 3M parts support 500VDC operation, while the Harwin M22-6341042 supports 500VAC with operating temperature range of -40°C to 105°C.

Compliance Considerations:

All substitute parts maintain UL94 V-0 flammability rating. RoHS compliance varies: A3-20DA-2SV(71), 150220-2000-RB, 150220-2020-RB, 55510-020LF, 55510-020TRLF, 55510-120LF, 55510-320LF, 55510-320TRLF, and M22-6341042 are RoHS compliant or ROHS3 compliant. The 150220-2020-RB-WD variant is RoHS non-compliant. All parts maintain REACH unaffected or affected status as specified.

Frequently Asked Questions (FAQ)

Q: Can I directly replace A3-20DA-2SV with A3-20DA-2SV(71)?

A: Yes. The A3-20DA-2SV(71) is the direct equivalent with identical connector interface, pitch, position count, and electrical ratings. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Packaging format differs (tube vs. unspecified original), but this does not affect connector functionality.

Q: What are the key differences between Hirose A3 series and Amphenol Minitek® 2.00mm series?

A: Both maintain identical mating pitch (0.079" / 2.00mm), position count (20), row configuration (2 rows), and push-pull fastening. Primary differences include operating temperature range (Hirose: -55°C to 85°C; Amphenol: -55°C to 125°C), current rating (Hirose: 1A; Amphenol: 2A), and insulation material (Hirose: PPS; Amphenol: plastic). Mechanical interface compatibility is maintained across all variants.

Q: Which substitute part offers the highest voltage rating?

A: The 3M 1502 series (150220-2000-RB, 150220-2020-RB, 150220-2020-RB-WD) and Harwin M22-6341042 provide the highest voltage ratings at 500VDC and 500VAC respectively, compared to the original 200VAC specification. These parts are suitable for applications requiring enhanced electrical isolation.

Q: Are tape & reel packaged variants compatible with the original solder-terminated design?

A: Yes. Tape & reel packaging (55510-020TRLF, 55510-320TRLF, 150220-2020-RB-WD) affects supply chain and assembly process but does not alter the connector's electrical or mechanical interface. These variants are suitable for automated pick-and-place assembly processes.

Q: What is the impact of contact finish thickness variation on substitution?

A: Contact finish thickness variations (ranging from 1.97µin to 39.4µin) do not affect connector compatibility. These variations represent different manufacturing specifications from different suppliers but maintain the same gold mating surface and electrical performance for the specified 1A to 2A current range.

Q: Can I use a substitute part with higher current rating (2A) in a 1A application?

A: Yes. Parts rated for 2A current (Amphenol Minitek® series, Harwin M22-6341042) are suitable for 1A applications. Higher current rating provides design margin and does not compromise performance in lower-current circuits.

Q: Which substitute parts are suitable for medical or industrial applications?

A: The Amphenol ICC Minitek® 2.00mm series (55510-020LF, 55510-020TRLF, 55510-120LF, 55510-320LF, 55510-320TRLF) explicitly list general purpose, industrial, and medical applications. The Harwin M22-6341042 lists general purpose, industrial, and telecommunications applications. All maintain UL94 V-0 flammability rating required for these sectors.

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