A1-34PA-2.54DSA(71) Equivalent & Substitute Parts

Part Overview

The A1-34PA-2.54DSA(71) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting applications. This 34-position, 2-row connector operates at 3A per contact and 200V, with a 0.100" (2.54mm) pitch suitable for board-to-board or cable interconnections. The part is active in production with 692 units currently in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across manufacturing environments.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	34
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Current Rating	3A
Voltage Rating	200V
Operating Temperature	-55°C ~ 85°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the A1-34PA-2.54DSA(71) are qualified based on the following critical parameters:

34-position, 2-row configuration with 0.100" (2.54mm) pitch and row spacing
Through-hole solder termination with push-pull fastening
3A current rating per contact
UL94 V-0 flammability rating
RoHS compliance status
Moisture Sensitivity Level 1

The following parts meet these core substitution criteria:

1-87215-7 (TE Connectivity AMP Connectors, AMPMODU Mod II series)
1-87227-7 (TE Connectivity AMP Connectors, AMPMODU Mod II series)
M20-9761746 (Harwin Inc., M20 series)
M20-9981746 (Harwin Inc., M20 series)

Parameter Comparison

Parameter	A1-34PA-2.54DSA(71)	1-87215-7	1-87227-7	M20-9761746	M20-9981746
Manufacturer	Hirose Electric Co Ltd	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	Harwin Inc.	Harwin Inc.
Series	A1	AMPMODU Mod II	AMPMODU Mod II	M20	M20
Connector Type	Header	Header	Header	Header, Cuttable	Header, Cuttable
Number of Positions	34	34	34	34	34
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	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Current Rating (Amps)	3A	3A	3A	3A per Contact	3A per Contact
Operating Temperature	-55°C ~ 85°C	-65°C ~ 105°C	-65°C ~ 105°C	-40°C ~ 105°C	-40°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
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

All substitute parts listed maintain active product status and meet UL94 V-0 flammability requirements. The TE Connectivity parts (1-87215-7 and 1-87227-7) offer extended operating temperature ranges (-65°C ~ 105°C) compared to the primary part. The Harwin M20 series (M20-9761746 and M20-9981746) provide cuttable header functionality with ROHS3 compliance and operate across -40°C ~ 105°C.

Selection should be based on specific application requirements regarding operating temperature range, contact material preferences (gold versus tin finish), and insulation material specifications. All parts maintain equivalent electrical performance at 3A current rating and UL94 V-0 certification.

Frequently Asked Questions (FAQ)

Q: Can 1-87215-7 directly replace A1-34PA-2.54DSA(71)?

A: Yes, within the specified electrical and mechanical parameters. Both connectors feature 34 positions, 2 rows, 0.100" pitch, through-hole solder termination, and 3A current rating. Differences exist in contact geometry (circular versus square), contact finish composition, and operating temperature range. Physical board layout compatibility should be verified.

Q: What is the primary difference between M20-9761746 and M20-9981746?

A: Both are Harwin M20 series cuttable headers with identical electrical specifications. The primary difference is contact length: M20-9761746 features 0.228" (5.80mm) mating contact length, while M20-9981746 features 0.240" (6.10mm) mating contact length. Overall contact lengths differ accordingly (0.452" versus 0.460").

Q: Are the TE Connectivity AMPMODU Mod II parts (1-87215-7 and 1-87227-7) interchangeable?

A: Both maintain identical electrical specifications and 34-position, 2-row configuration. Differences include contact shape (1-87215-7 uses circular contacts; 1-87227-7 uses square contacts) and contact finish thickness on mating surfaces (30.0µin versus 15.0µin). Board layout and mating connector compatibility should be confirmed.

Q: Do all substitute parts support the same voltage rating as A1-34PA-2.54DSA(71)?

A: The primary part specifies 200V. Substitute parts 1-87215-7, 1-87227-7, M20-9761746, and M20-9981746 do not list voltage ratings in their specifications. Application voltage requirements should be independently verified against manufacturer datasheets.

Q: What packaging differences exist among these parts?

A: A1-34PA-2.54DSA(71) is supplied in Tray packaging. Substitute parts 1-87215-7, 1-87227-7, M20-9761746, and M20-9981746 are supplied in Bulk packaging. Procurement and handling procedures may differ accordingly.

Q: Are all parts RoHS compliant?

A: Yes. A1-34PA-2.54DSA(71) and 1-87227-7 are RoHS Compliant. Parts 1-87215-7, M20-9761746, and M20-9981746 are ROHS3 Compliant. All meet RoHS requirements.

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