PX-44LCC PLCC Socket 44-Position Equivalent & Substitute Parts

Part Overview

The PX-44LCC is a 44-position Plastic Leaded Chip Carrier (PLCC) socket manufactured by Kycon, Inc., designed for through-hole mounting applications. This component features a closed frame design with tin-plated phosphor bronze contacts and is rated for operating temperatures from -40°C to 75°C. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support, legacy system maintenance, and design continuity.

Substiute Parts

PX-44LCC

Kycon, Inc.In Stock: 1109PX-44LCC Datasheet

Current PartRFQ

54020-44030LF

Amphenol ICC (FCI)In Stock: 209254020-44030LF Datasheet

SimilarRFQ

8444-11B1-RK-TP

3MIn Stock: 57368444-11B1-RK-TP Datasheet

SimilarRFQ

A-CCS 044-Z-T

Assmann WSW ComponentsIn Stock: 10279A-CCS 044-Z-T Datasheet

SimilarRFQ

PLCC-44-AT

Adam TechIn Stock: 2914PLCC-44-AT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PX-44LCC is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Type: PLCC Socket
• Number of Positions: 44 (4 x 11)
• Pitch - Mating: 0.050" (1.27mm)
• Pitch - Post: 0.100" (2.54mm)
• Contact Finish - Mating: Tin
• Mounting Type: Through Hole
• Features: Closed Frame
• Termination: Solder

Allowable Variations:

• Contact Material - Mating: Phosphor Bronze or Copper Alloy (both provide equivalent electrical performance)
• Housing Material: PBT (glass-filled or unfilled) or Polyphenylene Sulfide (PPS) (both meet mechanical and thermal requirements)
• Operating Temperature Range: May exceed the original -40°C to 75°C specification (higher ratings are acceptable)
• Contact Finish Thickness - Mating: Variations within industry standards (80.0µin to 160.0µin) are acceptable
• Termination Post Length: Minor variations (0.126" to 0.132") are acceptable within manufacturing tolerances

All four substitute parts meet these criteria and are therefore electrically and mechanically compatible with the PX-44LCC.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are active products with current manufacturing support, providing superior long-term availability compared to the obsolete PX-44LCC.

For applications requiring exact parameter matching:

• A-CCS 044-Z-T (Assmann WSW Components) provides the closest electrical match with identical contact resistance (15mOhm) and contact material (Phosphor Bronze). Housing material is PBT without glass fill, which remains mechanically suitable. This part is ROHS3 compliant and REACH unaffected.

For applications with extended temperature requirements:

• 8444-11B1-RK-TP (3M) and 54020-44030LF (Amphenol ICC) both support -40°C to 105°C operating range, exceeding the original specification. The 3M part maintains PBT glass-filled housing identical to the original and is ROHS3 compliant. The Amphenol part uses PPS housing and is RoHS compliant.

For cost-optimized procurement:

• PLCC-44-AT (Adam Tech) offers the widest operating temperature range (-55°C to 105°C) and highest inventory availability. Contact resistance is 30mOhm, which remains within acceptable limits for standard PLCC socket applications. This part is ROHS3 compliant and REACH unaffected.

All substitute parts carry RoHS compliance certifications suitable for modern manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the PX-44LCC?

A: Yes. All four substitute parts are electrically and mechanically compatible with the PX-44LCC. They share identical PLCC socket configuration (44 positions, 0.050" mating pitch, 0.100" post pitch), tin-plated contacts, closed frame design, and through-hole mounting. The primary differences are in housing material composition, operating temperature range, and contact resistance—all of which fall within acceptable substitution parameters.

Q: What is the difference between Phosphor Bronze and Copper Alloy contact materials?

A: Both materials provide equivalent electrical performance in PLCC socket applications. Phosphor Bronze offers slightly lower contact resistance (15mOhm in the PX-44LCC and A-CCS 044-Z-T) compared to Copper Alloy (20mOhm in the 54020-44030LF). For standard signal and power distribution applications, both materials are functionally interchangeable.

Q: Does the operating temperature range difference matter for my application?

A: The original PX-44LCC operates from -40°C to 75°C. All substitute parts support at least -40°C to 105°C, which exceeds the original specification. If your application operates within the original temperature range, any substitute part is suitable. If your application requires temperatures above 75°C, all substitutes provide adequate margin.

Q: What is the significance of contact finish thickness variations?

A: Contact finish thickness (ranging from 80.0µin to 160.0µin across the substitute parts) affects contact durability and mating cycles. Thicker finishes generally provide longer service life in high-cycle applications. For standard applications, all specified thicknesses meet industry standards and are functionally equivalent.

Q: Are there packaging differences I should consider?

A: All substitute parts are supplied in tube packaging. The original PX-44LCC packaging is not specified in the available data. Tube packaging is standard for PLCC sockets and presents no compatibility issues for PCB assembly processes.

Q: Which substitute part has the best long-term availability?

A: All four substitute parts are classified as active products with current manufacturing support. The A-CCS 044-Z-T (Assmann) shows the highest current inventory (10,233 pieces), followed by 8444-11B1-RK-TP (3M) with 5,655 pieces. Both represent strong long-term sourcing options compared to the obsolete PX-44LCC.

Q: Do all substitutes meet current compliance requirements?

A: Yes. All substitute parts are RoHS compliant or ROHS3 compliant. Three of the four parts (8444-11B1-RK-TP, A-CCS 044-Z-T, and PLCC-44-AT) are ROHS3 compliant, meeting the most current regulatory standards. All parts carry identical ECCN and HTSUS classifications as the original part.