A48-LC-TR 48-Position DIP Socket Equivalent & Substitute Parts

Part Overview

The A48-LC-TR is a 48-position DIP socket manufactured by Assmann WSW Components, designed for through-hole mounting of dual inline package integrated circuits. This connector features tin contact finish with phosphor bronze materials and operates across a temperature range of -55°C to 85°C. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible 48-position DIP socket functionality.

Key Parameters

Parameter	Value
Number of Positions	48 (2 x 24)
Row Spacing	0.6" (15.24mm)
Pitch - Mating	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)
Contact Finish - Mating	Tin
Contact Material - Mating	Phosphor Bronze
Mounting Type	Through Hole
Termination	Solder
Operating Temperature	-55°C ~ 85°C
Current Rating	1 A
Contact Resistance	30mOhm
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the A48-LC-TR is determined by strict equivalence in the following critical parameters:

Position Count & Row Spacing: All substitutes must maintain 48 positions (2 x 24) with 0.6" (15.24mm) row spacing
Pitch Specifications: Mating and post pitch must both be 0.100" (2.54mm)
Mounting & Termination: Through-hole mounting with solder termination is required
Contact Finish & Material: Tin finish with phosphor bronze or equivalent contact materials are acceptable
Electrical Performance: Current rating and contact resistance must meet or exceed the original specification
Environmental Compliance: UL94 V-0 flammability rating and REACH compliance status

Substitute parts are grouped into two categories based on contact finish: tin-finish sockets (direct material equivalents) and gold-finish sockets (enhanced performance alternatives with improved contact resistance and extended temperature range).

Parameter Comparison

Parameter	A48-LC-TR (Main)	110-87-648-41-001101	110-43-648-41-001000	110-44-648-41-001000	115-43-648-41-003000	4848-6004-CP
Manufacturer	Assmann WSW	Preci-Dip	Mill-Max	Mill-Max	Mill-Max	3M
Product Status	Obsolete	Active	Active	Active	Active	Active
Positions (2 x 24)	48	48	48	48	48	48
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)	0.100" (2.54mm)	0.100" (2.54mm)
Pitch - Post	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 Finish - Mating	Tin	Gold	Gold	Tin	Gold	Tin
Contact Material - Mating	Phosphor Bronze	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Phosphor Bronze
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 ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-25°C ~ 85°C
Current Rating (Amps)	1 A	1 A	3 A	3 A	3 A	1 A
Contact Resistance	30mOhm	10mOhm	—	—	—	—
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Material Flammability Rating	UL94 V-0	UL94 V-0	—	—	—	UL94 V-0

Engineering Selection Recommendations

Direct Tin-Finish Equivalents:

110-44-648-41-001000 (Mill-Max) and 4848-6004-CP (3M) maintain the tin contact finish of the original A48-LC-TR. Both are active products with ROHS3 compliance. The Mill-Max part offers extended operating temperature range (-55°C to 125°C) and higher current rating (3 A) compared to the original specification. The 3M part maintains the original operating temperature range (-25°C to 85°C) and 1 A current rating, providing the closest functional match to the obsolete Assmann part.

Gold-Finish Alternatives:

110-87-648-41-001101 (Preci-Dip), 110-43-648-41-001000 (Mill-Max), and 115-43-648-41-003000 (Mill-Max) provide gold contact finish with improved contact resistance and extended temperature capability (-55°C to 125°C). These parts are suitable for applications requiring enhanced reliability and environmental performance. The Preci-Dip part achieves 10mOhm contact resistance, superior to the original 30mOhm specification.

All substitute parts maintain REACH compliance and are currently in active production status, ensuring long-term availability for component procurement and system support.

Frequently Asked Questions (FAQ)

Q: Can I use a gold-finish socket as a substitute for the tin-finish A48-LC-TR?

A: Yes. Gold-finish sockets (110-87-648-41-001101, 110-43-648-41-001000, 115-43-648-41-003000) are functionally compatible substitutes. Gold finish provides lower contact resistance (10mOhm versus 30mOhm) and extended operating temperature range, making them suitable for applications requiring enhanced performance. The mechanical and electrical interfaces remain identical.

Q: What is the difference between the Mill-Max 110-43 and 110-44 series?

A: Both are 48-position DIP sockets with identical mechanical specifications. The 110-43 series features gold contact finish, while the 110-44 series features tin contact finish. The 110-43 achieves lower contact resistance through gold plating. Both offer 3 A current rating and -55°C to 125°C operating temperature range.

Q: Is the 3M 4848-6004-CP suitable for high-temperature applications?

A: The 3M 4848-6004-CP operates from -25°C to 85°C, matching the original A48-LC-TR temperature range. For applications requiring extended high-temperature operation, the Mill-Max (110-43, 110-44, 115-43) or Preci-Dip (110-87) alternatives rated to 125°C are more appropriate.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

Q: What is the difference in termination post length between substitute parts?

A: The Mill-Max 110-43 and 110-44 series specify 0.125" (3.18mm) post length, while the Mill-Max 115-43 series specifies 0.108" (2.74mm) post length. The original A48-LC-TR specifies 0.124" (3.15mm). Post length variations may affect PCB design considerations for through-hole mounting depth and solder fillet formation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message