Würth Elektronik 61303421021 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 61303421021 is an unshrouded rectangular connector header designed for through-hole, right-angle board-to-board applications. This 34-position, 2-row header operates across a temperature range of -40°C to 105°C and is rated for 3A per contact at 250V. The connector features gold-plated square contacts with solder termination and push-pull fastening. As an active product with ROHS3 compliance and UL94 V-0 flammability rating, substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate qualified alternatives.

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, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 61303421021 is determined by strict alignment with the following critical parameters:

Connector type: Header with male pin contacts
Position count and row configuration: 34 positions in 2 rows
Pitch specification: 0.100" (2.54mm) mating pitch and row spacing
Mounting configuration: Through-hole, right-angle orientation
Termination method: Solder
Fastening mechanism: Push-pull
Contact finish: Gold plating on mating surfaces
Electrical ratings: Minimum 3A current capacity and 250V voltage rating
Flammability compliance: UL94 V-0 rating
RoHS compliance: ROHS3 or equivalent

The substitute part 68021-134HLF from Amphenol ICC (FCI) meets these criteria across all critical dimensions and electrical specifications, enabling direct functional equivalence in board-to-board connector applications.

Parameter Comparison

Parameter	Würth Elektronik 61303421021	Amphenol ICC 68021-134HLF
Manufacturer	Würth Elektronik	Amphenol ICC (FCI)
Series	WR-PHD	BERGSTIK® II
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	34	34
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold or Gold, GXT™
Current Rating	3A	3A per Contact
Voltage Rating	250V	110V
Operating Temperature	-40°C ~ 105°C	-65°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	RoHS Compliant
Product Status	Active	Active

Engineering Selection Recommendations

Both the Würth Elektronik 61303421021 and Amphenol ICC 68021-134HLF are active products with full RoHS compliance and UL94 V-0 flammability certification, qualifying them for equivalent use in applications requiring these compliance standards.

The 61303421021 operates at a maximum voltage rating of 250V, while the 68021-134HLF is rated for 110V. Selection between these parts must account for the application's voltage requirements. The 61303421021 is suitable for higher-voltage applications, whereas the 68021-134HLF is appropriate for standard logic-level and lower-voltage signal applications.

The 68021-134HLF provides an extended operating temperature range of -65°C to 125°C compared to the 61303421021's -40°C to 105°C range, making it suitable for applications requiring broader thermal performance.

Both connectors maintain identical pitch, position count, row configuration, and contact current ratings, ensuring mechanical and electrical interchangeability within voltage and temperature constraints.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 68021-134HLF directly replace the Würth Elektronik 61303421021 in all applications?

A: Direct replacement is possible when the application voltage requirement does not exceed 110V. The 68021-134HLF is rated for 110V maximum, while the 61303421021 supports 250V. If your application requires voltages above 110V, the 61303421021 must be used. Both parts share identical pitch, position count, row spacing, and contact current ratings.

Q: What are the key mechanical compatibility factors between these two connectors?

A: Both connectors feature 34 positions arranged in 2 rows with 0.100" (2.54mm) pitch and row spacing. Both are through-hole, right-angle headers with solder termination and push-pull fastening. Mechanical compatibility is confirmed across all standard board-level mounting and mating interface requirements.

Q: How do the operating temperature ranges differ, and when does this matter?

A: The 61303421021 operates from -40°C to 105°C, while the 68021-134HLF operates from -65°C to 125°C. The 68021-134HLF is suitable for applications requiring extended low-temperature performance or high-temperature environments beyond 105°C. For standard industrial and consumer applications within -40°C to 105°C, both parts are equivalent.

Q: Are both parts RoHS compliant?

A: Yes. The 61303421021 is ROHS3 compliant, and the 68021-134HLF is RoHS compliant. Both meet current regulatory requirements for hazardous substance restrictions.

Q: What is the difference in packaging between these parts?

A: The 61303421021 is supplied in bulk packaging, while the 68021-134HLF is supplied in bag packaging. Packaging format does not affect electrical or mechanical performance and is primarily a logistics consideration.

Q: Do both connectors have the same contact finish specifications?

A: Both feature gold-plated mating contacts. The 68021-134HLF offers an additional option with Gold, GXT™ finish. Standard gold plating on both parts ensures equivalent contact resistance and reliability for signal integrity applications.

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