D01-9821601 Pin Receptacle Connector Equivalent & Substitute Parts

Part Overview

The D01-9821601 is a pin receptacle connector manufactured by Harwin Inc., designed for 0.016" to 0.020" pin diameters with solder termination and no tail configuration. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The connector features beryllium copper contacts with gold plating and operates across a temperature range of -55°C to 100°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	D01-9821601
Manufacturer	Harwin Inc.
Category	Terminals
Product Status	Obsolete
Accepts Pin Diameter	0.016" ~ 0.020" (0.41mm ~ 0.51mm)
Pin Hole Diameter	0.043" (1.09mm)
Length - Overall	0.193" (4.90mm)
Socket Depth	0.175" (4.45mm)
Contact Material	Beryllium Copper
Contact Finish	Gold
Termination	Solder
Operating Temperature	-55°C ~ 100°C
Insertion Force	2.00N ~ 6.00N
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the D01-9821601 is determined by the following critical parameters:

Pin diameter acceptance range forms the primary substitution criterion. The D01-9821601 accepts pins from 0.016" to 0.020" diameter. Substitute parts must maintain mechanical and electrical compatibility within this specification window.

Mechanical dimensions including pin hole diameter (0.043"), overall length (0.193"), socket depth (0.175"), and flange diameter (0.057") must remain consistent to ensure proper board-level integration and connector mating.

Contact material (beryllium copper) and finish (gold plating at 3.94µin thickness) establish electrical performance and corrosion resistance requirements.

Termination method (solder) and insertion force range (2.00N ~ 6.00N) must be preserved for assembly compatibility and reliable connection performance.

Environmental compliance certifications including RoHS3, REACH Unaffected status, and MSL rating of 1 ensure regulatory and operational continuity.

Parameter Comparison

Parameter	D01-9821601 (Main Part)	H3191-01 (Substitute)	Compatibility Notes
Manufacturer	Harwin Inc.	Harwin Inc.	Same manufacturer
Category	Terminals	Terminals	Identical category
Product Status	Obsolete	Active	Substitute is in active production
Accepts Pin Diameter	0.016" ~ 0.020" (0.41mm ~ 0.51mm)	0.018" ~ 0.020" (0.46mm ~ 0.51mm)	Narrower range; compatible with 0.018" ~ 0.020" pins
Pin Hole Diameter	0.043" (1.09mm)	0.043" (1.09mm)	Identical
Length - Overall	0.193" (4.90mm)	0.193" (4.90mm)	Identical
Socket Depth	0.175" (4.45mm)	0.175" (4.45mm)	Identical
Flange Diameter	0.057" (1.45mm)	0.057" (1.45mm)	Identical
Contact Material	Beryllium Copper	Beryllium Copper	Identical
Contact Finish	Gold	Gold	Identical
Contact Finish Thickness	3.94µin (0.10µm)	3.94µin (0.10µm)	Identical
Termination	Solder	Solder	Identical
Insertion Force	2.00N ~ 6.00N	2.00N ~ 6.00N	Identical
Operating Temperature	-55°C ~ 100°C	-55°C ~ 125°C	Substitute has extended upper temperature limit
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical compliance
MSL Rating	1 (Unlimited)	1 (Unlimited)	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical compliance

Engineering Selection Recommendations

The H3191-01 serves as the manufacturer-recommended substitute for the obsolete D01-9821601. Both components maintain identical mechanical dimensions, contact materials, and electrical specifications across all critical parameters.

The primary distinction lies in pin diameter acceptance range. The H3191-01 accepts pins from 0.018" to 0.020" diameter, compared to the D01-9821601 range of 0.016" to 0.020". This narrower specification in the substitute part eliminates compatibility with 0.016" to 0.017" diameter pins. Applications utilizing pins within the 0.018" to 0.020" range experience full compatibility.

The H3191-01 provides an extended operating temperature range of -55°C to 125°C, compared to the original part's -55°C to 100°C specification. This enhancement offers additional thermal margin for demanding applications.

Both parts maintain identical RoHS3 compliance, REACH Unaffected status, and MSL rating of 1, ensuring regulatory continuity and environmental stability during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can H3191-01 directly replace D01-9821601 in all applications?

A: Direct replacement is possible only for applications using pins within the 0.018" to 0.020" diameter range. Applications requiring 0.016" to 0.017" diameter pin compatibility cannot use H3191-01 without design modification.

Q: What is the significance of the narrower pin diameter range in H3191-01?

A: The H3191-01 specification of 0.018" to 0.020" represents a tighter tolerance window compared to the D01-9821601 range of 0.016" to 0.020". This narrower range does not affect applications already designed for 0.018" to 0.020" pins but excludes smaller diameter pins.

Q: Are the mechanical dimensions identical between both parts?

A: Yes. Pin hole diameter, overall length, socket depth, and flange diameter are identical across both components, ensuring mechanical interchangeability at the board level.

Q: Does the extended temperature range of H3191-01 affect compatibility?

A: No. The extended operating temperature range of -55°C to 125°C in H3191-01 provides additional thermal capability without affecting compatibility in applications operating within the original -55°C to 100°C range.

Q: Are compliance certifications maintained in the substitute part?

A: Yes. H3191-01 maintains identical RoHS3 compliance, REACH Unaffected status, and MSL rating of 1, ensuring regulatory and environmental requirements are preserved.

Q: What is the packaging difference between the main part and substitute?

A: D01-9821601 is supplied in standard packaging, while H3191-01 is supplied in bulk packaging. Both formats contain the same component specification.

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