Equivalent & Substitute Parts for A3-20PA-2SV

Part Overview

The Hirose Electric A3-20PA-2SV is a rectangular connector header for surface mount applications, featuring 20 positions arranged in 2 rows with 0.079" (2.00mm) pitch. This connector is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.079" (2.00mm)
Number of Positions	20
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Voltage Rating	200V
Current Rating	1A
Operating Temperature	-55°C ~ 85°C
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution of the A3-20PA-2SV is determined by the following critical parameters:

Pitch and Position Configuration: All substitute parts maintain 0.079" (2.00mm) pitch with 20 positions in 2 rows
Connector Type and Contact Type: All substitutes are headers with male pins
Mounting and Termination: All substitutes are surface mount with solder termination
Fastening Type: All substitutes maintain push-pull fastening
Electrical Ratings: Voltage and current ratings must meet or exceed the original specification
Environmental Compliance: RoHS and REACH status determine suitability for regulated applications

Substitute parts are grouped into two categories:

Direct Hirose Equivalent: A3-20PA-2SV(71) is an active variant of the original part with identical electrical and mechanical specifications, differing only in product status and packaging.

Cross-Manufacturer Alternatives: Amphenol ICC (FCI) Minitek 2.00mm series and Samtec TMM series provide functional equivalence with variations in contact material, insulation material, and current rating capacity.

Parameter Comparison

Parameter	A3-20PA-2SV	A3-20PA-2SV(71)	57202-F51-10LF	57202-G51-10LF	TMM-110-05-G-D-SM	TMM-110-05-L-D-SM	TMM-110-05-S-D-SM
Manufacturer	Hirose Electric	Hirose Electric	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Samtec Inc.	Samtec Inc.	Samtec Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
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)
Number of Positions	20	20	20	20	20	20	20
Number of Rows	2	2	2	2	2	2	2
Connector Type	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Voltage Rating	200V	200V	200V (AC/DC)	200V (AC/DC)	—	—	—
Current Rating	1A	1A	2A (AC/DC)	2A (AC/DC)	3.2A per Contact	3.2A per Contact	3.2A per Contact
Operating Temperature	-55°C ~ 85°C	-55°C ~ 85°C	—	—	-55°C ~ 125°C	-55°C ~ 125°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
Contact Material	Brass	Brass	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyphenylene Sulfide (PPS)	Polyphenylene Sulfide (PPS)	Thermoplastic	Thermoplastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Affected	REACH Affected	—	—	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For RoHS3 Compliant Applications: A3-20PA-2SV(71) is the direct replacement, maintaining identical specifications while providing active product status and ROHS3 compliance. This part is the preferred choice for new designs requiring regulatory compliance.

For Applications Requiring Higher Current Capacity: Samtec TMM-110 series parts (TMM-110-05-G-D-SM, TMM-110-05-L-D-SM, TMM-110-05-S-D-SM) provide 3.2A per contact rating, exceeding the original 1A specification. These parts also support extended operating temperature range to 125°C and are ROHS3 compliant.

For Cross-Manufacturer Standardization: Amphenol ICC 57202-F51-10LF and 57202-G51-10LF provide 2A current rating with RoHS compliance. The 57202-G51-10LF variant includes GXT gold plating technology. Both are active products with established supply chains.

For Legacy System Maintenance: When original A3-20PA-2SV parts are unavailable, A3-20PA-2SV(71) provides direct functional equivalence with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Can A3-20PA-2SV(71) be used as a direct replacement for A3-20PA-2SV?

A: Yes. A3-20PA-2SV(71) maintains identical electrical and mechanical specifications including pitch, position count, voltage rating, current rating, and operating temperature range. The primary differences are product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant).

Q: What are the key differences between Hirose A3 series and Samtec TMM series substitutes?

A: Both maintain 0.079" (2.00mm) pitch and 20-position configuration. Samtec TMM series provides higher current capacity (3.2A per contact versus 1A), extended operating temperature range (-55°C to 125°C versus -55°C to 85°C), and uses Phosphor Bronze contacts with Liquid Crystal Polymer insulation instead of Brass contacts with PPS insulation.

Q: Are Amphenol ICC 57202 series parts compatible with the original A3-20PA-2SV footprint?

A: Amphenol ICC 57202-F51-10LF and 57202-G51-10LF maintain identical pitch and position configuration. Physical compatibility depends on PCB layout and mating connector design. Contact length specifications differ (0.079" for Amphenol versus 0.138" for Hirose), which may affect board-to-board spacing.

Q: Which substitute part is recommended for new product designs?

A: A3-20PA-2SV(71) is recommended for designs requiring Hirose compatibility. For new designs without legacy constraints, Samtec TMM-110 series or Amphenol ICC 57202 series provide active product status, higher current capacity, and superior compliance certifications.

Q: What is the impact of different insulation materials on connector performance?

A: Hirose A3 series uses Polyphenylene Sulfide (PPS) insulation. Samtec TMM series uses Liquid Crystal Polymer (LCP), which provides superior dimensional stability and lower moisture absorption. Amphenol ICC 57202 series uses Thermoplastic insulation. All materials meet UL94 V-0 flammability requirements. Material selection affects thermal performance and long-term reliability in high-humidity environments.

Q: Are all substitute parts MSL 1 rated?

A: Yes. All listed substitute parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

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