TE Connectivity AMP Connectors 4-1571552-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 4-1571552-6 is a 20-position DIP socket with 0.3" (7.62mm) row spacing, gold-plated mating contacts, and through-hole solder termination. This component belongs to the 800 series and is classified as obsolete. The part features beryllium copper mating contacts with gold finish and copper posts with gold finish, housed in polycyclohexylenedimethylene terephthalate (PCT) polyester material rated UL94 V-0.

Due to the obsolete product status of the 4-1571552-6, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure ongoing component availability for new production and field replacements.

Key Parameters

Parameter	Value
Manufacturer Part Number	4-1571552-6
Manufacturer	TE Connectivity AMP Connectors
Category	Sockets for ICs, Transistors
Type	DIP, 0.3" (7.62mm) Row Spacing
Number of Positions	20 (2 x 10)
Pitch - Mating	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)
Contact Finish - Mating	Gold
Contact Finish - Post	Gold
Contact Material - Mating	Beryllium Copper
Contact Material - Post	Copper
Mounting Type	Through Hole
Termination	Solder
Termination Post Length	0.125" (3.18mm)
Housing Material	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester
Operating Temperature Range	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Contact Resistance	10mOhm
Product Status	Obsolete
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 4-1571552-6 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Number of Positions: 20 (2 x 10)
Type: DIP, 0.3" (7.62mm) Row Spacing
Pitch - Mating: 0.100" (2.54mm)
Pitch - Post: 0.100" (2.54mm)
Contact Material - Mating: Beryllium Copper
Mounting Type: Through Hole
Termination: Solder
Termination Post Length: 0.125" (3.18mm)
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Contact Finish - Mating: Gold (primary) or Tin-Lead (secondary)
Contact Finish - Post: Gold, Tin, or Tin-Lead
Contact Finish Thickness: Variations permitted within industry standards
Housing Material: PCT Polyester or Polyamide (PA46) Nylon 4/6, Glass Filled
Operating Temperature Range: -55°C minimum to 105°C or higher maximum
Material Flammability Rating: UL94 V-0 or equivalent
Contact Resistance: 10mOhm or lower
Current Rating: 1A or higher
Product Status: Active preferred; Obsolete acceptable
RoHS Status: ROHS3 Compliant or RoHS Compliant; RoHS non-compliant acceptable for legacy applications

Substitute parts are classified as Direct, Similar, or Legacy based on the degree of parameter alignment and product status.

Parameter Comparison

Parameter	4-1571552-6 (TE Connectivity)	110-43-320-41-001000 (Mill-Max)	110-83-320-41-001101 (Preci-Dip)	20-3518-10 (Aries Electronics)	ICA-320-SGT (Samtec Inc.)
Manufacturer Part Number	4-1571552-6	110-43-320-41-001000	110-83-320-41-001101	20-3518-10	ICA-320-SGT
Manufacturer	TE Connectivity AMP Connectors	Mill-Max Manufacturing Corp.	Preci-Dip	Aries Electronics	Samtec Inc.
Series	800	110	110	518	ICA
Number of Positions	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)
Type	DIP, 0.3" (7.62mm) Row Spacing	DIP, 0.3" (7.62mm) Row Spacing	DIP, 0.3" (7.62mm) Row Spacing	DIP, 0.3" (7.62mm) Row Spacing	DIP, 0.3" (7.62mm) Row Spacing
Pitch - Mating	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)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	20.0µin (0.51µm)	30.0µin (0.76µm)	29.5µin (0.75µm)	10.0µin (0.25µm)	30.0µin (0.76µm)
Contact Material - Mating	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper
Contact Finish - Post	Gold	Tin	Tin	Tin	Tin
Contact Material - Post	Copper	Brass Alloy	Brass	Brass	Brass
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Features	Open Frame	Open Frame	Open Frame	Open Frame	Open Frame
Termination	Solder	Solder	Solder	Solder	Solder
Termination Post Length	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)
Housing Material	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polyamide (PA46), Nylon 4/6, Glass Filled	Polyester, Glass Filled
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	Not specified	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	Not specified	3 A	1 A	3 A	1 A
Contact Resistance	10mOhm	Not specified	10mOhm	Not specified	10mOhm
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Affected

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

The following parts are classified as direct substitutes based on active product status, full RoHS3 compliance, and parameter alignment:

110-43-320-41-001000 (Mill-Max Manufacturing Corp.): Active status with ROHS3 compliance. Operating temperature range extends to 125°C, exceeding the original specification. Current rating of 3A provides enhanced electrical capacity. Post finish differs from original (Tin vs. Gold), but contact material remains Beryllium Copper with equivalent gold mating finish thickness.
110-83-320-41-001101 (Preci-Dip): Active status with ROHS3 compliance and UL94 V-0 flammability rating matching the original. Operating temperature range extends to 125°C. Contact resistance specified at 10mOhm, identical to original. Housing material includes glass-filled PCT polyester for enhanced mechanical properties.
ICA-320-SGT (Samtec Inc.): Active status with ROHS3 compliance and UL94 V-0 flammability rating. Operating temperature range extends to 125°C. Contact resistance specified at 10mOhm. REACH Affected status requires compliance verification for specific applications.

Similar Substitutes (Acceptable with Design Review):

20-3518-10 (Aries Electronics): Active status with ROHS3 compliance and UL94 V-0 flammability rating. Current rating of 3A. Housing material is Polyamide (PA46) Nylon 4/6 Glass Filled, differing from original PCT polyester. Operating temperature range not specified. Suitable for applications where housing material variation is acceptable.
110-41-320-41-001000 (Mill-Max Manufacturing Corp.): Active status with ROHS3 compliance. Current rating of 3A. Mating contact finish thickness reduced to 10.0µin (0.25µm) compared to original 20.0µin (0.51µm). Material flammability rating not specified.
110-91-320-41-001000 (Mill-Max Manufacturing Corp.): Active status with RoHS non-compliant designation. Post finish is Tin-Lead rather than gold. Current rating of 3A. Suitable only for legacy applications where RoHS compliance is not required.
110-99-320-41-001000 (Mill-Max Manufacturing Corp.): Active status with RoHS non-compliant designation. Mating contact finish is Tin-Lead rather than gold. Current rating of 3A. Suitable only for legacy applications where RoHS compliance is not required.
210-99-320-41-001000 (Mill-Max Manufacturing Corp.): Active status with RoHS non-compliant designation. Features closed frame design versus open frame original. Mating and post contact finishes are Tin-Lead. Suitable only for legacy applications where RoHS compliance is not required and closed frame design is acceptable.
20-3518-10T (Aries Electronics): Active status with ROHS3 compliance and UL94 V-0 flammability rating. Current rating of 3A. Packaging is bulk versus tube. Housing material is Polyamide (PA46) Nylon 4/6 Glass Filled. Operating temperature range not specified.
20-3518-11 (Aries Electronics): Active status with ROHS3 compliance and UL94 V-0 flammability rating. Current rating of 3A. Post contact finish is gold, matching original. Housing material is Polyamide (PA46) Nylon 4/6 Glass Filled. Operating temperature range not specified.

Frequently Asked Questions (FAQ)

Q: What are the critical parameters that determine if a part can substitute for the TE Connectivity 4-1571552-6?

A: The following parameters must match exactly: 20-position configuration (2 x 10), DIP type with 0.3" (7.62mm) row spacing, 0.100" (2.54mm) pitch for both mating and post, beryllium copper mating contacts, through-hole solder termination, 0.125" (3.18mm) post length, and MSL 1 (Unlimited) moisture sensitivity level. All substitute parts listed meet these mandatory requirements.

Q: Can I use a part with Tin-Lead post finish instead of gold post finish?

A: Yes. The post contact finish is an allowable variation parameter. Parts such as 110-43-320-41-001000, 110-83-320-41-001101, 20-3518-10, and ICA-320-SGT feature Tin post finish instead of the original gold finish. This variation is acceptable for electrical and mechanical compatibility. However, if your application specifically requires gold post finish for corrosion resistance or other design requirements, select 20-3518-11, which features gold post finish.

Q: What is the difference between Direct and Similar substitutes?

A: Direct substitutes (110-43-320-41-001000, 110-83-320-41-001101, ICA-320-SGT) are active products with full RoHS3 compliance and minimal parameter variations. Similar substitutes (20-3518-10, 110-41-320-41-001000, 110-91-320-41-001000, 110-99-320-41-001000, 210-99-320-41-001000, 20-3518-10T, 20-3518-11) have acceptable parameter variations such as housing material differences, non-compliant RoHS status, or unspecified flammability ratings. Direct substitutes are recommended for new designs; similar substitutes require design review and may be suitable for legacy applications.

Q: Why do some substitute parts have higher operating temperature ranges?

A: The original TE Connectivity 4-1571552-6 operates from -55°C to 105°C. Many substitute parts, particularly from Mill-Max and Samtec, operate from -55°C to 125°C. This represents an extended upper temperature limit and is an allowable variation that provides additional design margin. Parts with extended temperature ranges are fully compatible with applications requiring the original -55°C to 105°C range.

Q: What is the significance of RoHS compliance status?

A: The original part is RoHS Compliant. Direct substitutes are ROHS3 Compliant, which represents a more recent compliance standard and is fully acceptable. Similar substitutes marked as RoHS non-compliant (110-91-320-41-001000, 110-99-320-41-001000, 210-99-320-41-001000) contain lead-based finishes and are suitable only for applications where RoHS compliance is not required, such as legacy systems or non-regulated markets.

Q: Does packaging type affect electrical or mechanical compatibility?

A: No. Packaging type (Tube, Bulk) affects only storage, handling, and ordering logistics. It does not affect the electrical or mechanical performance of the socket itself. Parts with different packaging designations (such as 20-3518-10 in Tube versus 20-3518-10T in Bulk) are functionally identical.

Q: What does REACH Affected status mean for the ICA-320-SGT?

A: REACH Affected status indicates that the part may contain substances of concern under the European REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulation. This designation requires compliance verification for applications destined for European markets or subject to REACH requirements. The ICA-320-SGT remains electrically and mechanically compatible; however, regulatory compliance must be confirmed for your specific application and market.

Q: Can I substitute a part with a different housing material?

A: Yes, with design review. The original uses Polycyclohexylenedimethylene Terephthalate (PCT) Polyester. Substitute parts use either PCT Polyester (with or without glass fill) or Polyamide (PA46) Nylon 4/6 Glass Filled. These materials are functionally equivalent for DIP socket applications. However, if your design has specific thermal, mechanical, or chemical resistance requirements tied to the original material, verify that the substitute material meets those requirements.

Q: What is the difference between open frame and closed frame designs?

A: The original 4-1571552-6 features an open frame design. The 210-99-320-41-001000 features a closed frame design. Open frame sockets provide easier IC insertion and removal; closed frame sockets provide additional mechanical support and retention. Both designs are mechanically and electrically compatible with standard DIP packages. Selection depends on application requirements for IC retention and handling.

Q: Are all substitute parts in stock?

A: Inventory availability varies by part number and supplier. Refer to the inventory quantities provided in the detailed specifications for each substitute part. Direct substitutes (110-43-320-41-001000, 110-83-320-41-001101, ICA-320-SGT) have confirmed active status and current inventory levels ranging from 746 to 2349 pieces.

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