C8120-04 Equivalent & Substitute Parts Reference

Part Overview

The C8120-04 is a 20-position DIP socket manufactured by Aries Electronics, designed for through-hole mounting applications with wire wrap termination. This component features a 0.3" (7.62mm) row spacing and tin contact finish on both mating and post surfaces. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, repair, and legacy equipment maintenance.

Key Parameters

Parameter	Value
Manufacturer Part Number	C8120-04
Manufacturer	Aries Electronics
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)
Mounting Type	Through Hole
Termination	Wire Wrap
Operating Temperature Range	-55°C ~ 105°C
Current Rating	1.5 A
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the C8120-04 is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

Number of positions: 20 (2 x 10)
Row spacing: 0.3" (7.62mm)
Pitch - Mating: 0.100" (2.54mm)
Pitch - Post: 0.100" (2.54mm)
Mounting type: Through Hole
Termination type: Wire Wrap

Allowable Variations:

Contact finish material (Tin to Gold or Beryllium Copper)
Contact finish thickness (when not specified in substitute)
Housing material (Polyamide to Thermoplastic/Polyester)
Frame type (Closed to Open)
Current rating (1.5 A to higher ratings)
Operating temperature range (lower minimum acceptable if maximum meets or exceeds original)

The AR 20-HZW/TN from Assmann WSW Components meets all mandatory matching parameters and represents a direct functional equivalent despite differences in contact finish and housing material.

Parameter Comparison

Parameter	C8120-04 (Aries Electronics)	AR 20-HZW/TN (Assmann WSW Components)
Number of Positions	20 (2 x 10)	20 (2 x 10)
Type	DIP, 0.3" (7.62mm) Row Spacing	DIP, 0.3" (7.62mm) Row Spacing
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)	0.100" (2.54mm)
Contact Finish - Mating	Tin	Gold
Contact Material - Mating	Phosphor Bronze	Beryllium Copper
Contact Material - Post	Phosphor Bronze	Beryllium Copper
Mounting Type	Through Hole	Through Hole
Termination	Wire Wrap	Wire Wrap
Operating Temperature Range	-55°C ~ 105°C	-40°C ~ 105°C
Current Rating	1.5 A	3 A
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The AR 20-HZW/TN is a suitable substitute for the C8120-04 based on the following engineering criteria:

Compliance & Certification Alignment: Both parts maintain UL94 V-0 material flammability rating and ROHS3 compliance, ensuring regulatory continuity in applications requiring these certifications.

Operational Capability: The AR 20-HZW/TN exceeds the current rating specification (3 A versus 1.5 A) and maintains the maximum operating temperature of 105°C. The minimum operating temperature of the substitute (-40°C) is higher than the original (-55°C); applications requiring operation below -40°C require evaluation against specific system requirements.

Physical & Electrical Compatibility: Identical pitch specifications (0.100" mating and post) and 20-position configuration ensure mechanical and electrical compatibility with existing PCB layouts and IC packages designed for the C8120-04.

Contact Material Differences: The substitute employs Beryllium Copper contacts with gold mating finish, compared to the original Phosphor Bronze with tin finish. This change improves contact resistance performance (4mOhm specified) and corrosion resistance, representing an enhancement for long-term reliability.

Product Availability: The AR 20-HZW/TN is currently in active production with documented inventory availability, addressing the obsolescence status of the C8120-04.

Frequently Asked Questions (FAQ)

Q: Can the AR 20-HZW/TN be used as a direct replacement for the C8120-04 in existing designs?

A: Yes. Both parts share identical position count (20), row spacing (0.3"), pitch specifications (0.100"), mounting type (through hole), and termination method (wire wrap). The physical footprint and electrical interface are compatible with PCBs designed for the C8120-04.

Q: What is the significance of the contact finish difference (Tin versus Gold)?

A: The gold mating finish on the AR 20-HZW/TN provides superior corrosion resistance and lower contact resistance compared to tin. This represents an improvement in long-term reliability and signal integrity, particularly in environments with temperature cycling or humidity exposure.

Q: Does the higher current rating of the AR 20-HZW/TN (3 A versus 1.5 A) affect compatibility?

A: No. A higher current rating indicates greater capability and does not compromise compatibility. Applications operating at or below 1.5 A will function identically with the substitute part.

Q: What is the impact of the operating temperature range difference?

A: The AR 20-HZW/TN operates from -40°C to 105°C, compared to the C8120-04 range of -55°C to 105°C. For applications requiring operation below -40°C, the substitute part is not suitable. For all other applications within the -40°C to 105°C range, the substitute is fully compatible.

Q: Are there any packaging differences between these parts?

A: The C8120-04 packaging information is not specified in the reference data. The AR 20-HZW/TN is supplied in tube packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the C8120-04 and AR 20-HZW/TN are ROHS3 compliant, REACH unaffected, and carry UL94 V-0 material flammability rating. They are classified under the same HTSUS code (8536.69.4040) and ECCN (EAR99).

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