Equivalent & Substitute Parts for Würth Elektronik 61202020621

Part Overview

The Würth Elektronik 61202020621 is a surface mount rectangular connector header with 20 positions at 2.54mm pitch, designed for board-to-cable/wire applications. This component features shrouded 4-wall construction, solder termination, and push-pull fastening. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	61202020621
Manufacturer	Würth Elektronik
Connector Type	Header
Contact Type	Male Pin
Number of Positions	20
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Surface Mount
Shrouding	Shrouded - 4 Wall
Termination	Solder
Fastening Type	Push-Pull
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-40°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution eligibility for the 61202020621 is determined by the following critical parameters that must match or exceed the original specification:

Mandatory Matching Parameters:

Connector type: Header
Contact type: Male Pin
Number of positions: 20
Number of rows: 2
Pitch - mating: 0.100" (2.54mm)
Row spacing - mating: 0.100" (2.54mm)
Mounting type: Surface Mount
Shrouding: Shrouded - 4 Wall
Termination: Solder
Fastening type: Push-Pull
Contact shape: Square
Material flammability rating: UL94 V-0
RoHS compliance: ROHS3 Compliant

Parameters Allowing Variation:

Contact length - mating (within mechanical envelope constraints)
Insulation height (within mechanical envelope constraints)
Contact material (copper alloy, brass, or phosphor bronze acceptable)
Insulation material (polyamide, polycyclohexylenedimethylene terephthalate, or liquid crystal polymer acceptable)
Current rating (must equal or exceed 3A)
Operating temperature range (must encompass -40°C to 125°C minimum)
Packaging format (tube, tape & reel, or bulk)
Contact finish thickness specifications

Substitute parts meeting these criteria are functionally interchangeable for PCB assembly and mating connector applications.

Parameter Comparison

Parameter	61202020621 (Main)	61232020621	D2520-6V0C-AR-WE	HTST-110-01-L-DV	HTST-110-01-L-DV-04	HTST-110-01-L-DV-04-P-TR	HTST-110-01-L-DV-A	HTST-110-01-L-DV-A-04-P-TR	HTST-110-01-L-DV-A-P	HTST-110-01-L-DV-A-P-TR	HTST-110-01-L-DV-A-TR
Manufacturer	Würth Elektronik	Würth Elektronik	3M	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	20	20	20	20	20	20	20	20	20	20	20
Number of Rows	2	2	2	2	2	2	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)	0.100" (2.54mm)	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
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 Length - Mating	0.200" (5.08mm)	0.197" (5.00mm)	0.243" (6.17mm)	0.250" (6.35mm)	0.250" (6.35mm)	0.250" (6.35mm)	0.250" (6.35mm)	0.250" (6.35mm)	0.250" (6.35mm)	0.250" (6.35mm)	0.250" (6.35mm)
Insulation Height	0.365" (9.27mm)	0.362" (9.20mm)	0.390" (9.91mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Material	Copper Alloy	Copper Alloy	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Current Rating	3A	3A	1.75A	3.4A per Contact	3.4A per Contact	3.4A per Contact	3.4A per Contact	3.4A per Contact	3.4A per Contact	3.4A per Contact	3.4A per Contact
Voltage Rating	250V	250V	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°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	-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	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation: Würth Elektronik 61232020621

The 61232020621 is the manufacturer-recommended direct replacement for the discontinued 61202020621. Both parts are from the same WR-BHD series and share identical electrical and mechanical specifications. The 61232020621 is currently in active production with 1274 units in stock and is available in tape & reel packaging for automated assembly. This part maintains full compatibility with existing PCB designs and mating connectors.

Secondary Recommendation: Samtec HTST-110-01-L-DV Series

The Samtec Flex Stack HTST-110-01-L-DV variants provide functional equivalence with enhanced performance characteristics. These parts feature phosphor bronze contacts with higher current ratings (3.4A per contact versus 3A), extended operating temperature range (-55°C to 125°C), and liquid crystal polymer insulation for improved mechanical stability. Multiple packaging options are available including tube, tape & reel, and bulk formats. Variants with board guide features (HTST-110-01-L-DV-A series) offer additional mechanical retention during assembly.

Alternative Consideration: 3M D2520-6V0C-AR-WE

The 3M D2520-6V0C-AR-WE meets all mandatory substitution criteria with identical pitch, position count, and shrouding specifications. However, the current rating of 1.75A is below the original 3A specification and the operating temperature range (-55°C to 105°C) does not extend to the upper limit of 125°C. This part is suitable only for applications with reduced current requirements and lower maximum operating temperatures.

Packaging Considerations

For high-volume automated assembly, tape & reel packaging (61232020621, HTST-110-01-L-DV-04-P-TR, HTST-110-01-L-DV-A-P-TR, HTST-110-01-L-DV-A-TR) is recommended. For manual assembly or lower volumes, tube packaging is acceptable. Bulk packaging (HTST-110-01-L-DV-04) is available for specific procurement scenarios.

Frequently Asked Questions (FAQ)

Q: Can I use the Würth Elektronik 61232020621 as a direct replacement for the 61202020621?

A: Yes. The 61232020621 is the manufacturer-recommended successor to the discontinued 61202020621. Both parts are electrically and mechanically identical, with the primary difference being product status (active versus discontinued) and packaging format (tape & reel versus standard). No PCB redesign is required.

Q: What is the difference between the Samtec HTST-110-01-L-DV and HTST-110-01-L-DV-A variants?

A: The HTST-110-01-L-DV-A variants include a board guide feature for enhanced mechanical retention during mating operations. Both series are functionally equivalent for electrical performance. The board guide is optional and selection depends on assembly process requirements.

Q: Why does the 3M D2520-6V0C-AR-WE have a lower current rating?

A: The 3M part uses brass contacts with different geometry compared to the copper alloy and phosphor bronze contacts in the Würth and Samtec alternatives. The 1.75A rating reflects the current-carrying capacity of the 3M contact design. This part is suitable only for applications with current requirements below 1.75A.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts meet ROHS3 compliance requirements. The original 61202020621 and all recommended alternatives are suitable for applications requiring RoHS3 certification.

Q: What is the significance of the "-04" suffix in Samtec part numbers?

A: The "-04" suffix indicates that 19 of the 20 positions are loaded with contacts, with one position remaining empty. This configuration is used for specific applications requiring a keying or alignment feature. The standard variants (without "-04") have all 20 positions loaded.

Q: Can I mix packaging formats in production?

A: Packaging format does not affect electrical or mechanical compatibility. Parts from tape & reel, tube, and bulk packaging are functionally identical. Packaging selection should be based on assembly process requirements and inventory management practices.

Q: What is the operating temperature difference between the original part and Samtec alternatives?

A: The original 61202020621 operates from -40°C to 125°C. The Samtec HTST-110-01-L-DV series extends the lower limit to -55°C while maintaining the 125°C upper limit. This extended range provides additional design margin for applications in extreme environments.

Q: Are there any mechanical envelope differences between substitute parts?

A: Yes. Contact length and insulation height vary slightly between manufacturers. The original part has a contact length of 0.200" (5.08mm) and insulation height of 0.365" (9.27mm). Samtec parts have longer contacts (0.250" / 6.35mm) and lower insulation height (0.350" / 8.89mm). These differences remain within standard connector envelope tolerances and do not affect mating compatibility with standard 2.54mm pitch receptacles.

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