Equivalent & Substitute Parts for Würth Elektronik 61201620621

Part Overview

The Würth Elektronik 61201620621 is a surface mount rectangular connector header with 16 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 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
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	16
Number of Rows	2
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

Substitute Part Grouping Explanation

Substitution for the 61201620621 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Connector type: Header
Contact type: Male Pin
Pitch: 0.100" (2.54mm)
Number of positions: 16
Number of rows: 2
Row spacing: 0.100" (2.54mm)
Mounting type: Surface Mount
Shrouding: Shrouded - 4 Wall
Termination: Solder
Fastening type: Push-Pull
Material flammability: UL94 V-0
RoHS compliance: ROHS3 Compliant

Allowable Variations:

Contact length (mating): Variations within mechanical envelope constraints
Insulation height: Minor variations acceptable if footprint compatible
Contact material: Copper Alloy or Phosphor Bronze
Insulation material: Polyamide (PA6T/PA9T) or Liquid Crystal Polymer (LCP)
Contact finish: Gold plating acceptable
Packaging format: Tape & Reel, Tube, or Bulk
Product status: Active preferred; discontinued acceptable if in stock

Substitute parts are grouped by manufacturer and packaging configuration while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Parameter	61201620621 (Main)	61231620621	AWHW 16G-SMD	HTST-108-01-L-DV-A-P-TR	HTST-108-01-LM-DV-P-TR
Manufacturer	Würth Elektronik	Würth Elektronik	Assmann WSW	Samtec Inc.	Samtec Inc.
Connector Type	Header	Header	Header	Header	Header
Contact Type	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)
Number of Positions	16	16	16	16	16
Number of Rows	2	2	2	2	2
Row Spacing - Mating	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
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.200" (5.08mm)	0.197" (5.00mm)	0.232" (5.90mm)	0.250" (6.35mm)	0.250" (6.35mm)
Insulation Height	0.365" (9.27mm)	0.362" (9.20mm)	0.354" (9.00mm)	0.350" (8.89mm)	0.350" (8.89mm)
Contact Material	Copper Alloy	Copper Alloy	Brass	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T)	Polyamide (PA6T)	Polyamide (PA9T)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold
Current Rating	3A	3A	3A	3.4A per Contact	3.4A per Contact
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 105°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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active	Active	Active
Packaging	Bulk	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tape & Reel (TR)
Inventory Status	954 Pcs	1640 Pcs	4354 Pcs	1195 Pcs	1900 Pcs

Engineering Selection Recommendations

Primary Recommendation: Würth Elektronik 61231620621

The 61231620621 is the manufacturer-recommended direct replacement. It maintains identical electrical specifications, mechanical footprint compatibility, and material certifications as the original 61201620621. The primary difference is product status (Active vs. Discontinued) and packaging format (Tape & Reel vs. Bulk). This part is suitable for direct substitution in new production runs and design revisions.

Secondary Recommendation: Samtec HTST-108-01-L-DV-A-P-TR or HTST-108-01-LM-DV-P-TR

Samtec Flex Stack HTST series parts provide enhanced performance characteristics including extended operating temperature range (-55°C to 125°C vs. -40°C to 125°C), higher current rating per contact (3.4A vs. 3A), and superior insulation material (Liquid Crystal Polymer). These parts are suitable for applications requiring higher reliability margins or extended temperature operation. Contact length variation (0.250" vs. 0.200") requires PCB footprint verification.

Alternative Recommendation: Assmann WSW AWHW 16G-SMD

The AWHW 16G-SMD provides equivalent functionality with high inventory availability. Operating temperature range is limited to -40°C to 105°C, making it suitable for standard industrial applications but not for extended temperature requirements. Contact length (0.232") falls between the original and Samtec variants.

Compatibility Considerations:

All recommended substitutes maintain the critical parameters: 16-position, 2-row, 2.54mm pitch, shrouded 4-wall construction, surface mount solder termination, and push-pull fastening. Electrical ratings (3A minimum, 250V) and compliance certifications (UL94 V-0, ROHS3) are maintained across all options. PCB footprint verification is required for parts with contact length variations exceeding ±0.010".

Frequently Asked Questions (FAQ)

Q: Can I use HTST-108-01-L-DV-A-P-TR as a direct replacement for 61201620621?

A: Yes, with footprint verification. The Samtec part maintains all critical electrical and mechanical parameters. The contact length is 0.250" compared to the original 0.200", which may require PCB pad adjustment. Insulation height is 0.350" versus 0.365", a difference of 0.015" that is typically accommodated within standard PCB design tolerances.

Q: What is the difference between the Würth 61231620621 and the original 61201620621?

A: The 61231620621 is the active production equivalent. Electrical specifications, pitch, position count, and mechanical envelope are identical. The primary differences are product status (Active vs. Discontinued) and packaging (Tape & Reel vs. Bulk). This is the recommended direct replacement.

Q: Are there temperature limitations I should consider when selecting a substitute?

A: The original 61201620621 operates from -40°C to 125°C. The Assmann AWHW 16G-SMD is limited to -40°C to 105°C, making it unsuitable for applications requiring the full upper temperature range. Samtec HTST series parts extend to -55°C, providing additional margin for low-temperature applications.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel, Tube, and Bulk packaging formats do not affect electrical or mechanical performance. Selection should be based on assembly process requirements and inventory management practices. Tape & Reel packaging is standard for automated pick-and-place assembly.

Q: What is the significance of contact material differences (Copper Alloy vs. Phosphor Bronze)?

A: Both materials meet the electrical requirements and gold plating specifications. Phosphor Bronze (used in Samtec parts) provides enhanced spring characteristics and durability under repeated mating cycles. Copper Alloy (used in Würth and Assmann parts) is standard for general-purpose applications. Material selection does not affect substitutability for static applications.

Q: Can I mix substitute parts from different manufacturers in the same assembly?

A: Yes. All recommended substitutes maintain identical mating pitch (2.54mm), contact geometry (square), and shrouding configuration. Mixing manufacturers is acceptable from an electrical and mechanical standpoint, though design documentation should reflect the specific part number used.

Q: What does "Number of Positions Loaded" mean, and does it affect substitutability?

A: This parameter indicates how many of the 16 available positions contain contacts. The original 61201620621 has all 16 positions loaded. The Samtec HTST-108-01-L-DV-01 has 15 positions loaded. For direct substitution, ensure the substitute has all 16 positions loaded unless the application specifically requires fewer contacts.

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