Würth Elektronik 61203420621 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 61203420621 is a surface mount rectangular connector header with 34 positions at 2.54mm pitch, designed for board-to-cable/wire applications. This connector features shrouded 4-wall construction with solder termination and push-pull fastening. The part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. Active alternatives from Würth Elektronik and Samtec Inc. provide direct functional equivalence with enhanced availability and feature options.

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	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
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 61203420621 is determined by strict equivalence across the following critical parameters:

Connector Type & Configuration: Header, male pin, 34 positions, 2 rows, 2.54mm pitch
Mounting & Termination: Surface mount with solder termination
Mechanical Interface: Shrouded 4-wall construction with push-pull fastening
Electrical Performance: Current and voltage ratings supporting the application
Compliance: RoHS3 compliance and UL94 V-0 flammability rating

Substitute parts are grouped into two categories:

Category 1 - Würth Elektronik Direct Successor: Part 61233420621 maintains identical electrical and mechanical specifications with active product status and improved packaging options (Cut Tape).

Category 2 - Samtec Inc. Flex Stack Series (HTST-117): Multiple variants provide equivalent 34-position, 2.54mm pitch headers with enhanced features (board guide options, pick-and-place compatibility) and extended operating temperature range (-55°C to 125°C). These parts feature phosphor bronze contacts with gold finish and liquid crystal polymer insulation, offering superior mechanical durability compared to the original polyamide construction.

Parameter Comparison

Parameter	61203420621 (Original)	61233420621 (Würth)	HTST-117-01-L-DV (Samtec)	HTST-117-01-L-DV-A (Samtec)	HTST-117-01-L-DV-P-TR (Samtec)	HTST-117-01-LM-DV-A (Samtec)
Manufacturer	Würth Elektronik	Würth Elektronik	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Product Status	Discontinued	Active	Active	Active	Active	Active
Number of Positions	34	34	34	34	34	34
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)
Contact Length - Mating	0.200" (5.08mm)	0.197" (5.00mm)	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)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)
Contact Material	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	Not specified	Not specified	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)
Current Rating	3A	3A	3.4A per Contact	3.4A per Contact	3.4A per Contact	3.4A per Contact
Operating Temperature	-40°C ~ 125°C	-40°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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Not specified	Cut Tape (CT)	Tube	Tube	Tape & Reel (TR)	Tube
Features	Keying Slot	Keying Slot, Pick and Place	Keying Slot	Board Guide, Keying Slot	Keying Slot, Pick and Place	Board Guide, Keying Slot

Engineering Selection Recommendations

For Direct Replacement with Minimal Design Changes: Select Würth Elektronik 61233420621. This part maintains the original manufacturer's design philosophy with identical electrical specifications, matching operating temperature range, and equivalent mechanical construction. Active product status ensures long-term availability. The Cut Tape packaging option provides flexibility for both prototype and production environments.

For Enhanced Mechanical Performance and Extended Temperature Range: Select from the Samtec Flex Stack HTST-117 series. These connectors offer superior contact durability through phosphor bronze construction and provide extended operating temperature capability (-55°C to 125°C versus -40°C to 125°C). The liquid crystal polymer insulation provides improved dimensional stability and environmental resistance compared to polyamide. Higher current rating per contact (3.4A versus 3A) supports higher-density applications.

For Automated Assembly: Choose variants with "Pick and Place" feature designation (61233420621, HTST-117-01-L-DV-P-TR, HTST-117-01-LM-DV-P-TR, HTST-117-01-S-DV-P-TR) to optimize surface mount assembly processes.

For Board-Level Mechanical Stability: Select HTST-117 variants with "Board Guide" feature (HTST-117-01-L-DV-A, HTST-117-01-LM-DV-A) to enhance connector retention and reduce mechanical stress during mating cycles.

All substitute parts maintain RoHS3 compliance and UL94 V-0 flammability rating, ensuring regulatory equivalence with the original 61203420621.

Frequently Asked Questions (FAQ)

Q: Can I use Samtec HTST-117 connectors as direct replacements for the Würth 61203420621?

A: Yes. Both maintain identical 34-position, 2.54mm pitch configurations with equivalent electrical ratings (3A minimum per contact, 250V). Mechanical compatibility is confirmed through matching shrouded 4-wall construction, push-pull fastening, and solder termination. The primary differences are enhanced contact material (phosphor bronze versus copper alloy) and extended operating temperature range (-55°C to 125°C versus -40°C to 125°C), which provide superior performance without compromising compatibility.

Q: What is the difference between HTST-117-01-L-DV and HTST-117-01-L-DV-A?

A: The primary difference is the addition of a board guide feature in the HTST-117-01-L-DV-A variant. The board guide provides mechanical alignment and retention during connector mating, reducing stress on solder joints and improving long-term reliability in high-vibration or high-cycle applications. Both variants are electrically and mechanically equivalent otherwise.

Q: Does packaging type affect electrical or mechanical performance?

A: No. Packaging type (Tube, Cut Tape, Tape & Reel) affects only handling, storage, and assembly logistics. Electrical and mechanical specifications remain identical across all packaging options for a given part number variant. Selection should be based on production volume, assembly equipment compatibility, and inventory management requirements.

Q: Why do some Samtec variants specify "Pick and Place" as a feature?

A: Pick and Place designation indicates the connector design includes features optimized for automated surface mount assembly equipment, such as standardized tape-and-reel packaging, consistent part orientation, and compatible lead geometry. This does not affect manual assembly compatibility but improves efficiency in high-volume manufacturing environments.

Q: Are there any thermal or environmental performance differences between the original 61203420621 and substitute parts?

A: The Würth 61233420621 maintains identical thermal specifications (-40°C to 125°C). Samtec HTST-117 variants extend the lower operating temperature limit to -55°C, providing enhanced performance in cryogenic or aerospace applications. All parts maintain UL94 V-0 flammability rating and equivalent moisture resistance (MSL 1 for Würth parts; MSL Not Applicable for Samtec LCP construction, indicating superior moisture immunity).

Q: What is the significance of contact finish thickness specifications in the Samtec parts?

A: Contact finish thickness (10.0µin or 30.0µin gold plating) affects contact durability and mating cycle life. The 10.0µin specification (HTST-117-01-L-DV, HTST-117-01-L-DV-A, HTST-117-01-L-DV-P-TR, HTST-117-01-LM-DV-A, HTST-117-01-LM-DV-P-TR) provides standard durability for general applications. The 30.0µin specification (HTST-117-01-S-DV-P-TR, HTST-117-01-S-DV-TR) offers enhanced wear resistance for high-cycle or high-reliability applications. Both exceed the original part's specifications.

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