Equivalent & Substitute Parts for Aries Electronics 22-4501-20

Part Overview

The Aries Electronics 22-4501-20 is a 22-position DIP socket with 0.4" row spacing, tin contact finish, and wire wrap termination for through-hole mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, repair, and new design implementations where legacy compatibility is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	22-4501-20
Manufacturer	Aries Electronics
Category	Sockets for ICs, Transistors
Type	DIP, 0.4" (10.16mm) Row Spacing
Number of Positions	22 (2 x 11)
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	Wire Wrap
Operating Temperature Range	-55°C ~ 105°C
Current Rating	1.5 A
Housing Material	Polyamide (PA46), Nylon 4/6, Glass Filled
Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the 22-4501-20 is determined by the following critical parameters:

Position Count and Pitch: 22 positions (2 x 11) with 0.100" (2.54mm) mating and post pitch are mandatory for mechanical and electrical compatibility
Row Spacing: 0.4" (10.16mm) row spacing is required for PCB footprint alignment
Mounting Type: Through-hole mounting must be maintained
Termination Style: Wire wrap termination capability is required
Contact Material and Finish: While the primary part specifies tin finish with phosphor bronze contacts, alternative contact finishes (such as gold) with different contact materials (such as beryllium copper) are acceptable provided they maintain electrical performance within the specified current rating and operating temperature range
Electrical Performance: Current rating and operating temperature range establish the performance envelope for substitution

The Preci-Dip 122-87-422-41-001101 meets these substitution criteria through identical mechanical configuration, compatible electrical specifications, and active product status.

Parameter Comparison

Parameter	Aries 22-4501-20	Preci-Dip 122-87-422-41-001101
Number of Positions	22 (2 x 11)	22 (2 x 11)
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing	0.4" (10.16mm)	0.4" (10.16mm)
Mounting Type	Through Hole	Through Hole
Termination	Wire Wrap	Wire Wrap
Contact Finish - Mating	Tin	Gold
Contact Material - Mating	Phosphor Bronze	Beryllium Copper
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 125°C
Current Rating	1.5 A	1 A
Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The Preci-Dip 122-87-422-41-001101 is the qualified substitute for the obsolete Aries Electronics 22-4501-20. Selection of this alternative is supported by:

Mechanical Compatibility: Identical position count, pitch, row spacing, and mounting configuration ensure direct PCB footprint compatibility
Electrical Compliance: Both components maintain ROHS3 compliance and UL94 V-0 flammability rating
Product Availability: The substitute part maintains active product status, ensuring supply chain continuity and long-term availability
Operating Temperature: The substitute part extends the upper operating temperature limit to 125°C, providing enhanced thermal margin
Contact Finish Upgrade: Gold plating on mating contacts provides improved corrosion resistance and contact reliability compared to tin finish

The current rating differential (1.0 A versus 1.5 A) must be evaluated within the context of the specific application circuit requirements. Applications operating at or below 1.0 A are fully compatible with the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the Preci-Dip 122-87-422-41-001101 be used as a direct replacement for the Aries 22-4501-20?

A: Yes, for applications where the circuit current requirement does not exceed 1.0 A. The mechanical footprint, pitch, row spacing, and termination style are identical, ensuring direct PCB compatibility.

Q: What is the significance of the different contact finishes (tin versus gold)?

A: Contact finish affects corrosion resistance and long-term contact reliability. Gold plating provides superior corrosion resistance and is suitable for applications with extended shelf life or exposure to corrosive environments. Tin finish is adequate for standard applications with normal environmental conditions.

Q: Does the extended operating temperature range of the substitute part affect compatibility?

A: No. The substitute part's extended upper temperature limit (-55°C ~ 125°C versus -55°C ~ 105°C) provides additional thermal margin and does not compromise compatibility with applications designed for the original part's temperature range.

Q: Are there any housing material differences between the two parts?

A: Yes. The original part uses Polyamide (PA46) Nylon 4/6 glass-filled material, while the substitute uses Polycyclohexylenedimethylene Terephthalate (PCT) Polyester glass-filled material. Both materials meet UL94 V-0 flammability requirements and are suitable for standard through-hole socket applications.

Q: What is the impact of the current rating difference?

A: The substitute part is rated for 1.0 A maximum current, compared to 1.5 A for the original part. Applications must be evaluated to confirm that circuit current does not exceed 1.0 A. If higher current capacity is required, the original part specifications must be maintained or alternative solutions identified.

Q: Are both parts RoHS compliant?

A: Yes. Both the Aries 22-4501-20 and Preci-Dip 122-87-422-41-001101 are ROHS3 compliant and suitable for applications with RoHS requirements.

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