A-CCS32-Z-SM-R PLCC 32-Position Socket Equivalent & Substitute Parts

Part Overview

The A-CCS32-Z-SM-R is a 32-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, making equivalent substitute parts necessary for ongoing production and maintenance applications. The socket accommodates a 2×7, 2×9 pin grid configuration with 0.050" (1.27mm) mating pitch and operates across the -55°C to 105°C temperature range.

Key Parameters

Parameter	Value
Type	PLCC Socket
Number of Positions	32 (2×7, 2×9)
Pitch - Mating	0.050" (1.27mm)
Contact Finish - Mating	Tin
Contact Material - Mating	Phosphor Bronze
Mounting Type	Surface Mount
Features	Closed Frame
Termination	Solder
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1 A
Contact Resistance	30mOhm
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the A-CCS32-Z-SM-R is determined by the following critical parameters:

32-position PLCC socket configuration (2×7, 2×9 grid)
0.050" (1.27mm) mating pitch
Tin contact finish on mating surface
Surface mount termination with solder connection
Closed frame design
UL94 V-0 flammability rating
1 A current rating capability
MSL 1 (Unlimited) moisture sensitivity classification

All five substitute parts meet these core electrical and mechanical requirements. Variations in contact material composition, housing polymer, post pitch, and operating temperature ranges do not preclude functional equivalence within the specified parameter set.

Parameter Comparison

Parameter	A-CCS32-Z-SM-R	540-44-032-17-400000	69802-132LF	8432-21B1-RK-TP	8432-21B1-RK-TR	940-44-032-17-400000
Manufacturer	Assmann WSW	Mill-Max	Amphenol ICC (FCI)	3M	3M	Mill-Max
Type	PLCC	PLCC	PLCC	PLCC	PLCC	PLCC
Positions	32 (2×7, 2×9)	32 (2×7, 2×9)	32 (2×7, 2×9)	32 (2×7, 2×9)	32 (2×7, 2×9)	32 (2×7, 2×9)
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)
Contact Finish - Mating	Tin	Tin	Tin	Tin	Tin	Tin
Contact Material - Mating	Phosphor Bronze	Copper Alloy	Phosphor Bronze	Copper Alloy	Copper Alloy	Beryllium Copper
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Features	Closed Frame	Closed Frame	Closed Frame	Closed Frame	Closed Frame	Closed Frame
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Operating Temperature	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 125°C
Material Flammability	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	1 A	1 A	1 A	1 A	1 A	1 A
Contact Resistance	30mOhm	20mOhm	20mOhm	Not specified	15mOhm	30mOhm
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active
Packaging	Not specified	Tube	Tube	Tube	Tape & Reel	Tube

Engineering Selection Recommendations

All five substitute parts are active products with current manufacturing status, providing supply continuity for the obsolete A-CCS32-Z-SM-R. Selection among these equivalents should be based on the following factors:

RoHS and Regulatory Compliance: The 69802-132LF (Amphenol ICC) carries REACH Affected status, while all other substitutes are REACH Unaffected. All parts are classified under ECCN EAR99 and HTSUS 8536.69.4040. The 540-44-032-17-400000, 8432-21B1-RK-TP, 8432-21B1-RK-TR, and 940-44-032-17-400000 are ROHS3 Compliant. The 69802-132LF is RoHS Compliant.

Temperature Operating Range: The 540-44-032-17-400000, 69802-132LF, and 940-44-032-17-400000 extend to -55°C ~ 125°C, providing wider low-temperature coverage than the original part. The 8432-21B1-RK-TP and 8432-21B1-RK-TR operate at -40°C ~ 105°C, matching the upper limit of the original specification.

Packaging Availability: The 8432-21B1-RK-TR is supplied in Tape & Reel format, suitable for automated assembly processes. All other substitutes are available in Tube packaging.

Contact Resistance Performance: The 8432-21B1-RK-TR offers the lowest contact resistance at 15mOhm, followed by 540-44-032-17-400000 and 69802-132LF at 20mOhm. The A-CCS32-Z-SM-R and 940-44-032-17-400000 both specify 30mOhm.

Frequently Asked Questions (FAQ)

Q: Can the 540-44-032-17-400000 be used as a direct replacement for the A-CCS32-Z-SM-R?

A: Yes. Both parts share identical 32-position PLCC configuration, 0.050" mating pitch, tin contact finish, surface mount termination, closed frame design, UL94 V-0 rating, 1 A current rating, and MSL 1 classification. The 540-44-032-17-400000 is an active product with extended operating temperature range (-55°C ~ 125°C) and improved contact resistance (20mOhm vs. 30mOhm).

Q: What is the difference between the 8432-21B1-RK-TP and 8432-21B1-RK-TR?

A: Both are 3M PLCC 32-position sockets with identical electrical and mechanical specifications. The primary difference is packaging: 8432-21B1-RK-TP is supplied in Tube format, while 8432-21B1-RK-TR is supplied in Tape & Reel format. The Tape & Reel variant (8432-21B1-RK-TR) is optimized for automated pick-and-place assembly and offers lower contact resistance (15mOhm vs. unspecified for the TP variant).

Q: Are all substitute parts compatible with the same PCB footprint as the A-CCS32-Z-SM-R?

A: Yes. All substitute parts maintain the same 0.050" (1.27mm) mating pitch, 32-position configuration, surface mount termination, and closed frame design. PCB footprint compatibility is assured across all listed equivalents.

Q: Does the 69802-132LF have any regulatory restrictions?

A: The 69802-132LF is classified as REACH Affected, whereas all other substitutes are REACH Unaffected. This designation requires compliance verification within specific regulatory jurisdictions. All parts are ECCN EAR99 and carry UL94 V-0 flammability certification.

Q: Which substitute offers the best electrical performance?

A: The 8432-21B1-RK-TR (3M, Tape & Reel) provides the lowest contact resistance at 15mOhm, followed by 540-44-032-17-400000 and 69802-132LF at 20mOhm. For applications where contact resistance is critical, the 8432-21B1-RK-TR is the optimal selection.

Q: What is the inventory status of these substitute parts?

A: All substitute parts are in active production with current stock availability: 540-44-032-17-400000 (5634 pcs), 69802-132LF (1114 pcs), 8432-21B1-RK-TP (2498 pcs), 8432-21B1-RK-TR (4774 pcs), and 940-44-032-17-400000 (3058 pcs).

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