A-CCS52-Z-SM-R PLCC 52-Position Socket Equivalent & Substitute Parts

Part Overview

The A-CCS52-Z-SM-R is a 52-position PLCC socket manufactured by Assmann WSW Components, designed for surface mount applications with tin-plated phosphor bronze contacts. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The socket accommodates 52 pins in a 4 x 13 grid configuration with 0.050" (1.27mm) pitch and operates across the -55°C to 105°C temperature range.

Key Parameters

Parameter	Value
Type	PLCC Socket
Number of Positions	52 (4 x 13)
Pitch - Mating	0.050" (1.27mm)
Pitch - Post	0.050" (1.27mm)
Mounting Type	Surface Mount
Contact Finish - Mating	Tin
Contact Finish - Post	Tin
Contact Material - Mating	Phosphor Bronze
Contact Material - Post	Phosphor Bronze
Features	Closed Frame
Termination	Solder
Current Rating	1 A
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for PLCC 52-position sockets is determined by strict alignment of the following critical parameters:

Pin Configuration: 52 positions in 4 x 13 grid arrangement
Pitch Specifications: 0.050" (1.27mm) mating and post pitch
Mounting Technology: Surface mount only
Contact Finish: Tin plating on both mating and post surfaces
Termination Method: Solder termination
Electrical Rating: 1 A current capacity minimum
Environmental Classification: UL94 V-0 flammability rating and MSL 1 moisture sensitivity

All identified substitute parts meet these core electrical and mechanical parameters, ensuring functional interchangeability within the specified operating envelope.

Parameter Comparison

Parameter	A-CCS52-Z-SM-R (Main)	A-CCS 052-Z-SM (Direct)	8452-21A1-RK-TP (MFR Recommended)
Manufacturer	Assmann WSW Components	Assmann WSW Components	3M
Product Status	Obsolete	Active	Active
Type	PLCC	PLCC	PLCC
Number of Positions	52 (4 x 13)	52 (4 x 13)	52 (4 x 13)
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)
Pitch - Post	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)
Contact Finish - Mating	Tin	Tin	Tin
Contact Finish - Post	Tin	Tin	Tin
Contact Finish Thickness - Mating	150.0µin (3.81µm)	160.0µin (4.06µm)	160.0µin (4.06µm)
Contact Finish Thickness - Post	150.0µin (3.81µm)	160.0µin (4.06µm)	160.0µin (4.06µm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Features	Closed Frame	Closed Frame	Closed Frame
Termination	Solder	Solder	Solder
Current Rating	1 A	1 A	1 A
Contact Resistance	30mOhm	15mOhm	Not specified
Operating Temperature	-55°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

A-CCS 052-Z-SM is the direct equivalent from Assmann WSW Components. This part maintains identical electrical and mechanical specifications to the obsolete A-CCS52-Z-SM-R while offering active product status. The contact finish thickness is increased to 160.0µin (4.06µm) compared to the original 150.0µin (3.81µm), and the operating temperature range is narrowed to -40°C ~ 105°C. Contact resistance is improved at 15mOhm versus 30mOhm. This part is ROHS3 compliant and available in tube packaging.

8452-21A1-RK-TP is the manufacturer-recommended substitute from 3M's 8400 series. This part meets all core electrical and mechanical requirements with identical pin configuration, pitch, mounting type, and current rating. The contact material differs as copper alloy rather than phosphor bronze, with tin plating at 160.0µin (4.06µm) thickness. Operating temperature range is -40°C ~ 105°C. The part is ROHS3 compliant and available in tube packaging. Termination post length is specified at 0.132" (3.35mm).

Both substitute parts are active products with current availability and full regulatory compliance, making either suitable for design transitions from the obsolete A-CCS52-Z-SM-R.

Frequently Asked Questions (FAQ)

Q: Can A-CCS 052-Z-SM be used as a direct replacement for A-CCS52-Z-SM-R?

A: Yes. Both parts share identical PLCC 52-position configuration, 0.050" pitch, surface mount termination, tin contact finish, and 1 A current rating. The A-CCS 052-Z-SM is the active equivalent with improved contact resistance and ROHS3 compliance. The narrower operating temperature range (-40°C to 105°C versus -55°C to 105°C) must be verified against application requirements.

Q: What are the differences between the Assmann and 3M substitute options?

A: Both parts meet core PLCC 52-position socket specifications. The primary difference is contact material: Assmann uses phosphor bronze while 3M uses copper alloy. Both are tin-plated to 160.0µin thickness. The 3M part specifies termination post length at 0.132" (3.35mm). Contact resistance is not specified for the 3M part. Both operate at -40°C to 105°C and are ROHS3 compliant.

Q: Are there packaging differences between substitute parts?

A: The A-CCS52-Z-SM-R original part has no specified packaging. Both substitute parts are supplied in tube packaging, which is standard for PLCC socket distribution.

Q: Do the substitute parts maintain the same solder termination compatibility?

A: Yes. All three parts use solder termination with identical 0.050" (1.27mm) post pitch, ensuring compatibility with existing PCB footprints and assembly processes.

Q: What compliance certifications apply to the substitute parts?

A: Both substitute parts carry UL94 V-0 flammability rating, MSL 1 moisture sensitivity classification, REACH Unaffected status, and ROHS3 compliance. These certifications match or exceed the original part specifications.

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