Equivalent & Substitute Parts for Würth Elektronik 61301221021

Part Overview

The Würth Elektronik 61301221021 is an active rectangular connector header designed for through-hole, right-angle board-to-board or cable applications. This 12-position, 2-row connector operates at 0.100" (2.54mm) pitch and is rated for 3A current at 250V. The part is ROHS3 compliant and constructed with polyamide (PA6T) nylon insulation and copper alloy contacts finished in gold. Substitute parts are necessary to address supply chain availability, packaging preferences, or specific application requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	12
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Contact Shape	Square
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-40°C ~ 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters: connector type (header), contact type (male pin), pitch (0.100" / 2.54mm), number of positions (12), number of rows (2), row spacing (0.100" / 2.54mm), mounting type (through hole, right angle), termination (solder), fastening type (push-pull), contact shape (square), material flammability rating (UL94 V-0), insulation color (black), and regulatory compliance (ROHS3 or RoHS compliant).

All identified substitute parts meet these core electrical and mechanical requirements. Variations in contact finish (gold vs. tin), contact material (copper alloy vs. phosphor bronze vs. brass), insulation material composition, contact length specifications, and packaging format are secondary parameters that do not preclude substitution when the primary functional criteria are satisfied.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Connector Type	Contact Type	Pitch (mm)	Positions	Rows	Mounting	Termination	Fastening	Contact Finish - Mating	Contact Material	Insulation Material	Operating Temp (°C)	Current Rating	Voltage Rating	UL94 Rating	RoHS Status	Packaging	Inventory
61301221021	Würth Elektronik	WR-PHD	Header	Male Pin	2.54	12	2	Through Hole, Right Angle	Solder	Push-Pull	Gold	Copper Alloy	Polyamide (PA6T)	-40 ~ 105	3A	250V	V-0	ROHS3	Bulk	1817
0717640112	Molex	C-Grid 71764	Header, Breakaway	Male Pin	2.54	12	2	Through Hole, Right Angle	Solder	Push-Pull	Gold	Copper Alloy	Thermoplastic	Not specified	Not specified	Not specified	V-0	ROHS3	Tube	2803
68021-112HLF	Amphenol ICC (FCI)	BERGSTIK® II	Header	Male Pin	2.54	12	2	Through Hole, Right Angle	Solder	Push-Pull	Gold or Gold, GXT™	Phosphor Bronze	Not specified	-65 ~ 125	3A per Contact	110V	V-0	RoHS	Bag	1492
68021-212HLF	Amphenol ICC (FCI)	BERGSTIK® II	Header	Male Pin	2.54	12	2	Through Hole, Right Angle	Solder	Push-Pull	Gold or Gold, GXT™	Phosphor Bronze	Not specified	-65 ~ 125	3A per Contact	110V	V-0	RoHS	Bag	3373
68021-412HLF	Amphenol ICC (FCI)	BERGSTIK® II	Header	Male Pin	2.54	12	2	Through Hole, Right Angle	Solder	Push-Pull	Tin	Phosphor Bronze	Not specified	-65 ~ 125	3A per Contact	110V	V-0	RoHS	Bag	1880
68025-212HLF	Amphenol ICC (FCI)	BERGSTIK® II	Header	Male Pin	2.54	12	2	Through Hole, Right Angle	Solder	Push-Pull	Gold or Gold, GXT™	Phosphor Bronze	Not specified	Not specified	Not specified	Not specified	V-0	RoHS	Bag	2806
M20-9740642	Harwin Inc.	M20	Header, Cuttable	Male Pin	2.54	12	2	Through Hole, Right Angle	Solder	Push-Pull	Gold	Brass	Polyamide (PA6T)	-40 ~ 105	3A per Contact	Not specified	V-0	ROHS3	Bulk	2540
M20-9740646	Harwin Inc.	M20	Header, Cuttable	Male Pin	2.54	12	2	Through Hole, Right Angle	Solder	Push-Pull	Tin	Brass	Polyamide (PA6T)	-40 ~ 105	3A per Contact	Not specified	V-0	ROHS3	Bulk	2185

Engineering Selection Recommendations

All substitute parts listed maintain active product status and comply with UL94 V-0 flammability requirements. The Würth Elektronik 61301221021 and Harwin M20 series (M20-9740642, M20-9740646) share identical operating temperature ranges (-40°C ~ 105°C) and ROHS3 compliance. The Amphenol ICC BERGSTIK® II series (68021-112HLF, 68021-212HLF, 68021-412HLF, 68025-212HLF) and Molex C-Grid 71764 (0717640112) are RoHS compliant alternatives with extended operating temperature ranges where specified.

Selection between gold-plated and tin-plated contact finishes depends on application corrosion resistance requirements. Gold-finished variants (68021-112HLF, 68021-212HLF, 68025-212HLF, M20-9740642, 0717640112) provide superior corrosion resistance. Tin-finished variants (68021-412HLF, M20-9740646) are suitable for standard industrial applications.

Contact material differences (copper alloy vs. phosphor bronze vs. brass) do not affect substitution eligibility when all other electrical and mechanical parameters align. Packaging format variations (bulk, tube, bag) are logistical considerations that do not impact functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can I substitute the Würth Elektronik 61301221021 with any of the listed parts?

A: Yes. All listed parts meet the core substitution criteria: 12-position, 2-row header configuration at 0.100" (2.54mm) pitch, through-hole right-angle mounting, solder termination, push-pull fastening, square contact shape, and UL94 V-0 flammability rating. Electrical and mechanical compatibility is maintained across all substitutes.

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

A: Gold-plated contacts (68021-112HLF, 68021-212HLF, 68025-212HLF, M20-9740642, 0717640112) provide enhanced corrosion resistance and are preferred for applications exposed to moisture or corrosive environments. Tin-plated contacts (68021-412HLF, M20-9740646) are suitable for standard indoor industrial applications and offer cost efficiency.

Q: Are there temperature rating differences between substitutes?

A: The Würth Elektronik 61301221021 and Harwin M20 series operate at -40°C ~ 105°C. The Amphenol ICC BERGSTIK® II series extends to -65°C ~ 125°C where specified. The Molex C-Grid 71764 does not specify operating temperature limits in the provided data. Application temperature requirements should guide selection.

Q: What is the significance of "cuttable" in the Harwin M20 series?

A: The Harwin M20-9740642 and M20-9740646 are cuttable headers, allowing individual pins to be separated if required for custom configurations. This feature does not affect standard board-to-board or cable applications where the full 12-position header is used intact.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (bulk, tube, bag) is a logistical and storage consideration only. Bulk, tube, and bag packaging contain identical electrical and mechanical components. Selection should be based on inventory management and handling requirements.

Q: Are all substitutes ROHS3 compliant?

A: The Würth Elektronik 61301221021, Molex 0717640112, and Harwin M20 series (M20-9740642, M20-9740646) are ROHS3 compliant. The Amphenol ICC BERGSTIK® II series (68021-112HLF, 68021-212HLF, 68021-412HLF, 68025-212HLF) are RoHS compliant. Both certifications meet regulatory requirements for restricted substance elimination.

Q: What contact material differences exist, and do they matter for substitution?

A: The Würth Elektronik 61301221021 uses copper alloy contacts, Amphenol ICC BERGSTIK® II uses phosphor bronze, and Harwin M20 series uses brass. All three materials are suitable for the specified 3A current rating and provide adequate electrical conductivity. Material selection does not preclude substitution when all other parameters align.

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