Würth Elektronik 61301021021 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 61301021021 is a rectangular connector header, right-angle configuration, rated for 10 positions at 2.54mm pitch. This through-hole, board-to-board connector is designed for applications requiring reliable solder termination with push-pull fastening. The part is currently active in production with 1045 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to availability constraints, supply chain considerations, or design flexibility within the allowed parameter ranges.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	10
Number of Rows	2
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Current Rating	3A
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 61301021021 is determined by strict equivalence in the following critical parameters: connector type (header), contact type (male pin), mating pitch (2.54mm), position count (10), row configuration (2 rows), mounting style (through-hole, right-angle), termination method (solder), and fastening mechanism (push-pull). All identified substitutes maintain these core specifications.

The substitute parts are grouped into two manufacturer families:

Amphenol ICC (FCI) BERGSTIK® II Series (68021-110HLF, 68021-210HLF, 68021-410HLF): These parts differ primarily in contact finish specification and finish thickness. All three maintain the required electrical and mechanical envelope.

Harwin M20 Series (M20-9740542, M20-9740546): These cuttable header variants maintain identical pitch, position count, and mounting configuration. Differences are limited to contact finish material and post termination finish.

Parameter Comparison

Parameter	61301021021 (Würth)	68021-110HLF (Amphenol)	68021-210HLF (Amphenol)	68021-410HLF (Amphenol)	M20-9740542 (Harwin)	M20-9740546 (Harwin)
Manufacturer	Würth Elektronik	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Harwin Inc.	Harwin Inc.
Series	WR-PHD	BERGSTIK® II	BERGSTIK® II	BERGSTIK® II	M20	M20
Connector Type	Header	Header	Header	Header	Header, Cuttable	Header, Cuttable
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	10	10	10	10	10	10
Number of Rows	2	2	2	2	2	2
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.236" (6.00mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.228" (5.80mm)	0.228" (5.80mm)
Contact Length - Post	0.118" (3.00mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.118" (3.00mm)	0.118" (3.00mm)
Insulation Height	0.200" (5.08mm)	0.190" (4.83mm)	0.190" (4.83mm)	0.190" (4.83mm)	0.200" (5.08mm)	0.200" (5.08mm)
Contact Shape	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Gold	Tin
Contact Material	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T	Not specified	Not specified	Not specified	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°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	UL94 V-0
Current Rating	3A	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact
Voltage Rating	250V	110V	110V	110V	Not specified	Not specified
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active
Inventory	1045 Pcs	1489 Pcs	3349 Pcs	7888 Pcs	2908 Pcs	2477 Pcs

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with UL94 V-0 flammability requirements. The 61301021021 and Harwin M20 series (M20-9740542, M20-9740546) share identical operating temperature ranges (-40°C ~ 105°C) and insulation material specifications (Polyamide PA6T, Nylon 6T), making these substitutes functionally equivalent within the original design envelope.

The Amphenol ICC BERGSTIK® II series (68021-110HLF, 68021-210HLF, 68021-410HLF) extends the operating temperature range to -65°C ~ 125°C. These parts are suitable for applications requiring expanded thermal performance. Contact finish variations (gold or tin) across the Amphenol lineup provide flexibility for different solderability and corrosion resistance requirements.

All substitute parts are RoHS compliant. The 61301021021 and Harwin parts carry ROHS3 certification, while Amphenol parts carry standard RoHS certification. Selection should account for specific compliance requirements of the end application.

Frequently Asked Questions (FAQ)

Q: Can I substitute 68021-110HLF for 61301021021 in my design?

A: Yes. Both parts share identical connector type, pitch (2.54mm), position count (10), row configuration (2), mounting style (through-hole, right-angle), termination (solder), and fastening mechanism (push-pull). The 68021-110HLF operates across a wider temperature range (-65°C ~ 125°C versus -40°C ~ 105°C) and carries RoHS compliance. Contact finish differs (gold or gold GXT™ versus gold), which may affect solderability characteristics in your specific assembly process.

Q: What is the difference between M20-9740542 and M20-9740546?

A: Both Harwin M20 parts are functionally identical in electrical and mechanical specifications. The primary difference is contact finish: M20-9740542 features gold mating contact finish, while M20-9740546 features tin mating contact finish. Both include tin post termination finish. Selection depends on your soldering process and corrosion resistance requirements.

Q: Are the Amphenol BERGSTIK® II variants (68021-110HLF, 68021-210HLF, 68021-410HLF) interchangeable?

A: Yes, all three are mechanically and electrically interchangeable. Differences are limited to contact finish specifications: 68021-110HLF and 68021-210HLF feature gold or gold GXT™ finish with varying thickness (30.0µin and 15.0µin respectively), while 68021-410HLF features tin finish at 100.0µin thickness. Selection should be based on your assembly soldering requirements and contact durability specifications.

Q: What packaging differences exist between these substitutes?

A: The 61301021021 and Harwin parts (M20-9740542, M20-9740546) are supplied in bulk packaging. The Amphenol BERGSTIK® II series (68021-110HLF, 68021-210HLF, 68021-410HLF) is supplied in bag packaging. Packaging format does not affect electrical or mechanical performance.

Q: Do all these parts meet the same compliance standards?

A: All parts carry UL94 V-0 flammability certification and are RoHS compliant. The 61301021021 and Harwin parts carry ROHS3 certification specifically. Amphenol parts carry standard RoHS certification. Verify compliance requirements for your specific application before selection.

Q: What is the significance of the cuttable feature on Harwin M20 parts?

A: The M20-9740542 and M20-9740546 are designated as cuttable headers, allowing individual pins to be separated if required for custom configurations. This feature does not affect standard through-hole mounting or electrical performance when used as a complete 10-position header.

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