PX-68LCC PLCC Socket 68-Position Equivalent & Substitute Parts

Part Overview

The PX-68LCC is a 68-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 equivalent substitute parts necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

PX-68LCC

Kycon, Inc.In Stock: 1059PX-68LCC Datasheet

Current PartRFQ

8468-11B1-RK-TP

3MIn Stock: 21748468-11B1-RK-TP Datasheet

SimilarRFQ

A-CCS 068-Z-T

Assmann WSW ComponentsIn Stock: 2093A-CCS 068-Z-T Datasheet

SimilarRFQ

PLCC-68-AT

Adam TechIn Stock: 1904PLCC-68-AT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PX-68LCC is determined by strict alignment with the following critical parameters:

Essential Matching Criteria:

• Type: PLCC socket
• Number of Positions: 68 (4 x 17)
• Pitch - Mating: 0.050" (1.27mm)
• Mounting Type: Through Hole
• Features: Closed Frame
• Termination: Solder
• Material Flammability Rating: UL94 V-0
• Moisture Sensitivity Level: 1 (Unlimited)

Compatible Variation Parameters:

• Pitch - Post: 0.050" (1.27mm) or 0.100" (2.54mm) are both acceptable
• Contact Material - Mating: Phosphor Bronze or Copper Alloy
• Housing Material: PBT with or without glass fill
• Operating Temperature Range: Must meet or exceed -40°C to 75°C minimum
• Contact Finish Thickness - Mating: Variations acceptable if tin plating is maintained
• Termination Post Length: Minor variations within 0.126" to 0.132" acceptable

All three substitute parts meet these criteria and are classified as active products with current availability.

Parameter Comparison

Engineering Selection Recommendations

8468-11B1-RK-TP (3M): This substitute offers the highest operating temperature range (-40°C to 105°C) and maintains all critical electrical and mechanical parameters. The copper alloy contact material provides equivalent performance to phosphor bronze. The primary design difference is the 0.050" (1.27mm) post pitch versus the original 0.100" (2.54mm), which requires PCB footprint verification. ROHS3 compliance and active product status ensure long-term availability and supply chain stability.

A-CCS 068-Z-T (Assmann WSW Components): This substitute maintains identical post pitch (0.100" / 2.54mm) and contact material (phosphor bronze) to the original PX-68LCC, minimizing design modifications. Operating temperature range extends to 105°C. Contact resistance matches the original specification at 15mOhm. ROHS3 compliance and active status support production continuity. Housing material is PBT without glass fill, a minor variation from the original specification.

PLCC-68-AT (Adam Tech): This substitute provides the widest operating temperature range (-55°C to 105°C) and maintains post pitch and contact material compatibility with the original. Contact resistance is specified at 30mOhm, which is higher than the original 15mOhm specification. ROHS3 compliance and active product status ensure availability. Termination post length is 0.126" (3.20mm), a 0.006" (0.15mm) reduction from the original, requiring PCB hole depth verification.

All three substitutes are RoHS compliant, carry UL94 V-0 flammability ratings, and maintain MSL 1 classification. Selection should prioritize PCB footprint compatibility and contact resistance requirements for the specific application.

Frequently Asked Questions (FAQ)

Q: Can the 8468-11B1-RK-TP substitute be used directly without PCB modifications?

A: The 8468-11B1-RK-TP features a 0.050" (1.27mm) post pitch compared to the original 0.100" (2.54mm). This requires PCB footprint redesign. Verify hole spacing and via placement compatibility before implementation.

Q: What is the significance of contact resistance differences between substitutes?

A: Contact resistance affects signal integrity and power dissipation. The PX-68LCC and A-CCS 068-Z-T specify 15mOhm, while PLCC-68-AT specifies 30mOhm. For high-current or low-impedance applications, the 15mOhm options are preferred. Verify application current requirements against the 1A current rating common to all substitutes.

Q: Are all substitutes suitable for high-temperature applications?

A: The original PX-68LCC operates to 75°C. All three substitutes extend this to 105°C or higher, providing thermal margin. If the application requires operation above 75°C, any substitute is acceptable. If operation is limited to 75°C or below, all substitutes remain valid.

Q: Does the difference in housing material (glass-filled vs. non-glass-filled PBT) affect performance?

A: Both PBT variants maintain UL94 V-0 flammability rating and mechanical integrity. Glass-filled PBT provides enhanced dimensional stability and mechanical strength. For standard applications, both are functionally equivalent. Verify mechanical stress requirements for the specific mounting environment.

Q: What is the impact of the 0.006" (0.15mm) post length variation in the PLCC-68-AT?

A: The PLCC-68-AT termination post length is 0.126" versus the original 0.132". This affects solder joint formation and PCB hole depth. Verify that PCB hole depth accommodates the shorter post length and that solder fillet formation remains adequate for mechanical and electrical integrity.

Q: Are all substitutes available in the same packaging format?

A: The original PX-68LCC packaging is not specified. All three substitutes are supplied in Tube packaging, which is standard for PLCC socket distribution. Verify packaging requirements for your procurement and assembly processes.

Q: Which substitute offers the best long-term supply chain stability?

A: All three substitutes carry active product status with current inventory levels exceeding 1,800 units. 3M (8468-11B1-RK-TP) and Assmann WSW Components (A-CCS 068-Z-T) are established manufacturers with broad distribution networks. Adam Tech (PLCC-68-AT) is also an active supplier. All three represent viable long-term alternatives to the obsolete PX-68LCC.