Equivalent & Substitute Parts for D2948-42

Part Overview

The Harwin D2948-42 is a 48-position DIP socket with 0.6" (15.24mm) row spacing, gold-plated mating contacts, and through-hole solder termination. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The D2948-42 operates across the industrial temperature range of -55°C to 125°C and is rated for 1 A per contact with 10mOhm contact resistance.

Key Parameters

Parameter	Value
Manufacturer Part Number	D2948-42
Manufacturer	Harwin Inc.
Category	Sockets for ICs, Transistors
Number of Positions	48 (2 x 24)
Row Spacing	0.6" (15.24mm)
Pitch - Mating	0.100" (2.54mm)
Contact Finish - Mating	Gold (Flash)
Contact Material - Mating	Beryllium Copper
Mounting Type	Through Hole
Termination	Solder
Operating Temperature	-55°C ~ 125°C
Current Rating	1 A
Contact Resistance	10mOhm
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the D2948-42 is determined by strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Number of Positions: 48 (2 x 24) positions required
Row Spacing: 0.6" (15.24mm) required
Pitch - Mating: 0.100" (2.54mm) required
Contact Finish - Mating: Gold required
Contact Material - Mating: Beryllium Copper required
Mounting Type: Through Hole required
Termination: Solder required
Operating Temperature: -55°C ~ 125°C minimum required
Current Rating: 1 A minimum required
Contact Resistance: 10mOhm maximum required

Substitute Categories:

Category A - Direct Electrical & Mechanical Equivalents (Same Pitch - Mating: 0.100"):

110-87-648-41-001101 (Preci-Dip)
115-83-648-41-001101 (Preci-Dip)
115-83-648-41-003101 (Preci-Dip)
115-87-648-41-001101 (Preci-Dip)
115-87-648-41-003101 (Preci-Dip)

Category B - Different Pitch - Mating (0.070" instead of 0.100"):

117-83-648-41-005101 (Preci-Dip)
117-87-648-41-005101 (Preci-Dip)

Non-Equivalent Part:

D2928-42 (Harwin Inc.) - 28 positions instead of 48; does not meet position requirement

Parameter Comparison

Parameter	D2948-42 (Main)	110-87-648-41-001101	115-83-648-41-001101	115-87-648-41-001101	117-83-648-41-005101	117-87-648-41-005101
Manufacturer	Harwin Inc.	Preci-Dip	Preci-Dip	Preci-Dip	Preci-Dip	Preci-Dip
Number of Positions	48 (2 x 24)	48 (2 x 24)	48 (2 x 24)	48 (2 x 24)	48 (2 x 24)	48 (2 x 24)
Row Spacing	0.6" (15.24mm)	0.6" (15.24mm)	0.6" (15.24mm)	0.6" (15.24mm)	0.6" (15.24mm)	0.6" (15.24mm)
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.070" (1.78mm)	0.070" (1.78mm)
Contact Finish - Mating	Gold (Flash)	Gold (Flash)	Gold (29.5µin)	Gold (Flash)	Gold (29.5µin)	Gold (Flash)
Contact Material - Mating	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating (Amps)	1 A	1 A	1 A	1 A	1 A	1 A
Contact Resistance	10mOhm	10mOhm	10mOhm	10mOhm	10mOhm	10mOhm
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (0.100" Pitch - Mating):

The Preci-Dip 110-87-648-41-001101, 115-83-648-41-001101, 115-87-648-41-001101, and related 115/110 series parts provide full electrical and mechanical compatibility with the D2948-42. All substitute options are ROHS3 compliant and carry active product status, ensuring long-term availability and supply chain stability. The transition from Harwin to Preci-Dip maintains identical contact specifications, operating temperature range, and current ratings.

For Applications Requiring Compliance Upgrade:

If RoHS compliance is a design requirement, any of the Preci-Dip substitutes (110-87-648-41-001101, 115-83-648-41-001101, 115-87-648-41-003101, 115-87-648-41-001101) satisfy ROHS3 certification while maintaining full compatibility with the D2948-42 electrical and mechanical specifications.

For Alternative Pitch Configurations (0.070" Pitch - Mating):

The Preci-Dip 117-83-648-41-005101 and 117-87-648-41-005101 provide 48-position DIP sockets with reduced pitch spacing (0.070" instead of 0.100"). These parts are suitable only for applications where the PCB layout accommodates the narrower pitch and where the IC package supports 0.070" pin spacing. These are not direct replacements for the D2948-42 but serve as alternatives for compact designs.

Frequently Asked Questions (FAQ)

Q: Can the Preci-Dip 110-87-648-41-001101 directly replace the Harwin D2948-42?

A: Yes. The 110-87-648-41-001101 meets all electrical and mechanical requirements: 48 positions, 0.6" row spacing, 0.100" mating pitch, gold-plated beryllium copper contacts, 1 A current rating, 10mOhm contact resistance, and -55°C to 125°C operating temperature. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between the 115-83 and 115-87 series?

A: Both series are 48-position DIP sockets with 0.6" row spacing and 0.100" mating pitch. The primary difference is contact finish thickness on the mating side: 115-83 has 29.5µin (0.75µm) gold plating, while 115-87 has flash gold plating. Both meet the D2948-42 specifications and are ROHS3 compliant.

Q: Why are the 117-83 and 117-87 parts listed as substitutes if they have different pitch?

A: The 117 series parts (0.070" mating pitch) are listed as alternatives rather than direct substitutes. They maintain the same 48-position count, 0.6" row spacing, and all other electrical specifications, but the reduced pitch requires PCB layout compatibility with 0.070" pin spacing. These are suitable only for applications where the IC package and PCB design support this narrower pitch.

Q: Is the D2928-42 a suitable substitute for the D2948-42?

A: No. The D2928-42 is a 28-position socket with 0.3" row spacing, which does not meet the 48-position and 0.6" row spacing requirements of the D2948-42. This part is not electrically or mechanically compatible.

Q: What packaging options are available for the substitute parts?

A: Preci-Dip substitutes are available in Bulk and Tube packaging. The 110-87-648-41-001101 is supplied in Tube packaging, while the 115 and 117 series parts are available in Bulk packaging. Packaging selection does not affect electrical or mechanical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All Preci-Dip substitute parts listed (110, 115, and 117 series) are ROHS3 compliant. The original Harwin D2948-42 is RoHS non-compliant. Substitution provides compliance upgrade for new designs or redesigns.

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