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

Part Overview

The A-CCS20-Z-R is a 20-position PLCC socket manufactured by Assmann WSW Components, designed for through-hole mounting applications. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance requirements. The socket features a closed frame design with tin-plated phosphor bronze contacts and is rated for 1 ampere continuous current operation across an extended temperature range.

Substiute Parts

A-CCS20-Z-R

Assmann WSW ComponentsIn Stock: 1005A-CCS20-Z-R Datasheet

Current PartRFQ

A-CCS 020-Z-T

Assmann WSW ComponentsIn Stock: 1495A-CCS 020-Z-T Datasheet

DirectRFQ

8420-11B1-RK-TP

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A-CCS20-Z-R is determined by strict alignment of the following critical parameters:

• PLCC socket type with 20-position (4 x 5) configuration
• Mating pitch of 0.050" (1.27mm)
• Post pitch of 0.100" (2.54mm)
• Through-hole mounting capability
• Tin contact finish on both mating and post surfaces
• Polybutylene Terephthalate housing material
• UL94 V-0 flammability rating
• 1 ampere current rating capability
• Operating temperature range compatibility

The identified substitute parts meet these core electrical and mechanical requirements, enabling direct functional replacement in circuit board assemblies designed for the A-CCS20-Z-R.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are classified as active products with current manufacturing support, providing supply chain continuity for the obsolete A-CCS20-Z-R. The A-CCS 020-Z-T maintains manufacturer continuity as an Assmann WSW Components product and carries ROHS3 compliance certification. The 8420-11B1-RK-TP from 3M's 8400 series offers an alternative source with equivalent electrical and mechanical specifications and also maintains ROHS3 compliance.

The A-CCS 020-Z-T exhibits lower contact resistance (15mOhm versus 30mOhm), which may provide marginal performance benefits in low-signal applications. Both substitutes feature slightly increased termination post length (0.132" versus 0.130") and marginally thicker contact finish plating (160.0µin versus 150.0µin), representing minor dimensional and material enhancements over the original specification.

The operating temperature range for both substitutes is -40°C to 105°C, compared to the main part's -55°C to 105°C. Applications requiring operation below -40°C must retain the original A-CCS20-Z-R specification.

Frequently Asked Questions (FAQ)

Q: Can the A-CCS 020-Z-T directly replace the A-CCS20-Z-R in existing circuit board designs?

A: Yes. Both parts share identical PLCC socket configuration, pin count, mating pitch (0.050"), post pitch (0.100"), through-hole mounting, and tin contact finish. The A-CCS 020-Z-T is the direct successor from the same manufacturer.

Q: What is the significance of the contact finish thickness difference between the main part and substitutes?

A: The substitutes feature 160.0µin (4.06µm) plating thickness compared to the main part's 150.0µin (3.81µm). This represents a 10µin increase, which falls within normal manufacturing tolerance ranges and does not affect functional compatibility or electrical performance.

Q: Are there temperature range limitations when using substitute parts?

A: Yes. The A-CCS 020-Z-T and 8420-11B1-RK-TP are rated for -40°C to 105°C operation, whereas the original A-CCS20-Z-R extends to -55°C. Applications requiring operation below -40°C cannot use these substitutes.

Q: What is the difference between phosphor bronze and copper alloy contact materials?

A: Both materials provide adequate electrical conductivity and mechanical durability for PLCC socket applications. The 8420-11B1-RK-TP uses copper alloy contacts instead of phosphor bronze. This substitution is acceptable within the specified electrical and thermal parameters.

Q: Does the lower contact resistance of the A-CCS 020-Z-T provide measurable performance improvement?

A: The A-CCS 020-Z-T exhibits 15mOhm contact resistance versus 30mOhm for the main part. This reduction may provide marginal benefits in high-current or low-signal applications, but both values remain within acceptable ranges for standard PLCC socket operation at 1 ampere rating.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the A-CCS 020-Z-T and 8420-11B1-RK-TP carry ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic component manufacturing.

Q: What packaging format is available for the substitute parts?

A: Both substitute parts are supplied in tube packaging, which is standard for PLCC socket distribution and handling.