PLCC-044-T-A Equivalent & Substitute Parts

Part Overview

The PLCC-044-T-A is a 44-position PLCC socket manufactured by Samtec Inc., designed for surface mount applications with tin-plated beryllium copper contacts. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The socket accommodates 44 pins in a 4 x 11 grid configuration with 0.050" (1.27mm) mating pitch and 0.100" (2.54mm) post pitch, suitable for PLCC integrated circuit packages.

Substiute Parts

PLCC-044-T-A

Samtec Inc.In Stock: 1027PLCC-044-T-A Datasheet

Current PartRFQ

540-88-044-17-400-TR

Preci-DipIn Stock: 2482540-88-044-17-400-TR Datasheet

DirectRFQ

540-88-044-17-400

Preci-DipIn Stock: 692540-88-044-17-400 Datasheet

SimilarRFQ

8444-21A1-RK-TP

3MIn Stock: 25078444-21A1-RK-TP Datasheet

SimilarRFQ

940-44-044-17-400000

Mill-Max Manufacturing Corp.In Stock: 3353940-44-044-17-400000 Datasheet

SimilarRFQ

940-44-044-17-400004

Mill-Max Manufacturing Corp.In Stock: 1089940-44-044-17-400004 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PLCC-044-T-A are qualified based on the following critical parameters that must match or be compatible:

• Pin Configuration: 44 positions in 4 x 11 grid (mandatory match)
• Mating Pitch: 0.050" (1.27mm) (mandatory match)
• Contact Finish - Mating: Tin (mandatory match)
• Mounting Type: Surface Mount (mandatory match)
• Features: Closed Frame (mandatory match)
• Termination: Solder (mandatory match)
• Material Flammability Rating: UL94 V-0 (mandatory match)
• RoHS Status: ROHS3 Compliant (mandatory match)
• Moisture Sensitivity Level: 1 (Unlimited) (mandatory match)

Substitute parts may vary in contact material composition, housing material, post pitch configuration, and operating temperature range, provided all mandatory parameters remain consistent. All identified substitutes maintain active product status and full compliance with regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and full ROHS3 compliance with UL94 V-0 flammability certification. The following considerations apply to component selection:

Primary Substitutes (Highest Compatibility)

The 940-44-044-17-400000 (Mill-Max) maintains identical operating temperature range (-55°C ~ 125°C) and beryllium copper mating contact material as the original PLCC-044-T-A, providing the closest electrical and thermal performance match. This part is available in tube packaging.

The 540-88-044-17-400-TR (Preci-Dip) offers active product status with tape and reel packaging suitable for automated assembly processes. Contact resistance is specified at 20mOhm, representing a measurable increase from the original 10mOhm specification.

Secondary Substitutes (Functional Equivalence)

The 8444-21A1-RK-TP (3M) operates within a reduced temperature range (-40°C ~ 105°C) and features glass-filled PBT housing. This part is suitable for applications not requiring the full -55°C lower temperature limit.

The 540-88-044-17-400 (Preci-Dip) in bulk packaging provides equivalent electrical characteristics to the tape and reel variant, with selection dependent on assembly methodology and volume requirements.

The 940-44-044-17-400004 (Mill-Max) in tape and reel format offers automated assembly compatibility with PPS housing material.

Frequently Asked Questions (FAQ)

Q: Can I substitute the PLCC-044-T-A with any of these parts directly?

A: All listed substitute parts share the critical mechanical and electrical parameters required for PLCC socket functionality: 44-position configuration, 0.050" mating pitch, tin contact finish, closed frame design, and surface mount termination. Direct substitution is supported from an electrical and mechanical standpoint. Packaging format selection depends on assembly process requirements.

Q: What is the significance of contact material differences between beryllium copper, phosphor bronze, and copper alloy?

A: Contact material affects electrical performance and mechanical durability. Beryllium copper (PLCC-044-T-A and 940-44-044-17-400000) provides superior spring characteristics and contact reliability. Phosphor bronze (Preci-Dip variants) and copper alloy (3M) offer alternative material compositions with different mechanical properties. All materials are suitable for PLCC socket applications and maintain compliance with flammability and RoHS requirements.

Q: Why do some parts specify contact resistance while others do not?

A: Contact resistance is a measured electrical parameter provided by manufacturers when characterized. The PLCC-044-T-A specifies 10mOhm, while substitute parts range from 20mOhm to 30mOhm or are not specified. Lower contact resistance indicates superior electrical performance, but all specified values remain within acceptable ranges for PLCC socket applications.

Q: What is the difference between tape and reel, tube, and bulk packaging?

A: Packaging format affects handling and assembly methodology. Tape and reel (TR) packaging is optimized for automated pick-and-place assembly equipment. Tube packaging is suitable for manual or semi-automated assembly. Bulk packaging is used for manual assembly or custom packaging requirements. Electrical and mechanical performance is identical across packaging formats for the same part number.

Q: Does the operating temperature range difference affect substitution suitability?

A: The PLCC-044-T-A and 940-44-044-17-400000 both specify -55°C ~ 125°C operating range. The 8444-21A1-RK-TP specifies -40°C ~ 105°C, representing a reduced temperature envelope. Substitution with the 3M part is suitable for applications operating within the -40°C ~ 105°C range. Applications requiring full -55°C ~ 125°C operation should use parts with matching temperature specifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and UL94 V-0 flammability certification, meeting current regulatory requirements for electronic component manufacturing and assembly.