A-CCS20-G-R PLCC 20-Position Socket - Equivalent & Substitute Parts

Part Overview

The A-CCS20-G-R is a 20-position PLCC socket manufactured by Assmann WSW Components, designed for through-hole mounting applications. This component features gold-plated mating contacts and is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for ongoing production and maintenance applications requiring PLCC 20-position socket functionality.

Substiute Parts

A-CCS20-G-R

Assmann WSW ComponentsIn Stock: 798A-CCS20-G-R Datasheet

Current PartRFQ

8420-11B1-RK-TP

3MIn Stock: 23858420-11B1-RK-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A-CCS20-G-R is determined by strict equivalence across the following critical parameters:

• Socket Type & Position Count: Both main and substitute parts must be PLCC sockets with 20 positions in a 4 x 5 grid configuration
• Pitch Specifications: Mating pitch of 0.050" (1.27mm) and post pitch of 0.100" (2.54mm) are non-negotiable for mechanical compatibility
• Mounting & Termination: Through-hole solder termination with closed-frame design ensures PCB integration compatibility
• Housing Material & Flammability: PBT glass-filled housing with UL94 V-0 rating maintains electrical safety and thermal performance
• Current & Temperature Ratings: 1 A current rating and operating temperature range support equivalent electrical performance
• Regulatory Compliance: REACH Unaffected status and EAR99 ECCN classification ensure regulatory alignment

The 3M 8420-11B1-RK-TP qualifies as a substitute based on matching all critical mechanical and electrical parameters, with the primary difference being contact finish material and specification (tin vs. gold).

Parameter Comparison

Engineering Selection Recommendations

The 3M 8420-11B1-RK-TP is a qualified substitute for the obsolete A-CCS20-G-R based on the following engineering criteria:

Mechanical Compatibility: Both sockets maintain identical PLCC 20-position configuration with matching mating and post pitch specifications, ensuring direct PCB footprint compatibility without layout modifications.

Electrical Performance: Equivalent current rating (1 A) and contact resistance characteristics support identical electrical performance in circuit applications.

Regulatory & Compliance Status: The 3M substitute maintains UL94 V-0 flammability rating and REACH Unaffected status, ensuring compliance alignment. The 3M part additionally carries ROHS3 Compliant certification, providing enhanced regulatory coverage for modern supply chain requirements.

Product Availability: The substitute part is in active production status with significantly higher inventory availability (2337 Pcs vs. 783 Pcs), supporting long-term supply chain continuity.

Operating Temperature Consideration: The A-CCS20-G-R operates across -55°C to 105°C, while the 3M substitute operates across -40°C to 105°C. Applications requiring operation below -40°C must retain the original Assmann component.

Frequently Asked Questions (FAQ)

Q: Can the 3M 8420-11B1-RK-TP directly replace the A-CCS20-G-R on existing PCBs?

A: Yes, for applications operating within the -40°C to 105°C temperature range. Both sockets share identical mechanical dimensions, pitch specifications, and through-hole termination footprints. No PCB layout modifications are required.

Q: What is the significance of the contact finish difference (gold vs. tin)?

A: Contact finish affects corrosion resistance and long-term reliability in specific environmental conditions. Gold plating provides superior corrosion resistance in high-humidity or corrosive environments. Tin plating is suitable for standard industrial applications with adequate environmental controls. Selection depends on application environment and reliability requirements.

Q: Are there any temperature-related limitations when substituting?

A: Yes. The A-CCS20-G-R supports operation from -55°C to 105°C, while the 3M substitute supports -40°C to 105°C. Applications requiring operation below -40°C must use the original Assmann component or identify alternative substitutes with extended low-temperature ratings.

Q: What is the difference in termination post length between these parts?

A: The A-CCS20-G-R has a post length of 0.130" (3.30mm), while the 3M substitute is 0.132" (3.35mm). This 0.002" (0.05mm) difference is within standard PCB through-hole tolerance and does not affect solder joint quality or mechanical reliability.

Q: Does the 3M substitute meet modern regulatory requirements?

A: Yes. The 3M 8420-11B1-RK-TP carries ROHS3 Compliant certification in addition to REACH Unaffected status, meeting current regulatory requirements for electronics manufacturing and distribution.

Q: What contact material difference exists between these sockets?

A: The A-CCS20-G-R uses phosphor bronze contacts, while the 3M substitute uses copper alloy contacts. Both materials provide equivalent electrical conductivity and contact reliability for standard PLCC socket applications.