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

Part Overview

The A-CCS32-Z-SM 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 x 7, 2 x 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	A-CCS32-Z-SM
Manufacturer	Assmann WSW Components
Type	PLCC Socket
Number of Positions	32 (2 x 7, 2 x 9)
Pitch - Mating	0.050" (1.27mm)
Contact Finish - Mating	Tin
Contact Material - Mating	Phosphor Bronze
Mounting Type	Surface Mount
Housing Material	Polybutylene Terephthalate (PBT), Glass Filled
Operating Temperature	-55°C ~ 105°C
Current Rating	1 A
Contact Resistance	30mOhm
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

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

32-position PLCC socket configuration (2 x 7, 2 x 9 grid)
0.050" (1.27mm) mating pitch
Tin contact finish on mating surface
Surface mount termination
Closed frame design
UL94 V-0 flammability rating
1 A current rating capability
Moisture sensitivity level 1 (unlimited)

All four substitute parts meet these core electrical and mechanical requirements. Variations in contact material, housing material, post pitch, and operating temperature range do not preclude functional substitution within the specified application parameters.

Parameter Comparison

Parameter	A-CCS32-Z-SM	540-44-032-17-400000	69802-132LF	8432-21B1-RK-TR	940-44-032-17-400000
Manufacturer	Assmann WSW	Mill-Max	Amphenol ICC (FCI)	3M	Mill-Max
Type	PLCC Socket	PLCC Socket	PLCC Socket	PLCC Socket	PLCC Socket
Positions	32 (2x7, 2x9)	32 (2x7, 2x9)	32 (2x7, 2x9)	32 (2x7, 2x9)	32 (2x7, 2x9)
Pitch - Mating	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
Contact Material - Mating	Phosphor Bronze	Copper Alloy	Phosphor Bronze	Copper Alloy	Beryllium Copper
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Features	Closed Frame	Closed Frame	Closed Frame	Closed Frame	Closed Frame
Operating Temperature	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C	-55°C ~ 125°C
Current Rating	1 A	Not specified	1 A	1 A	1 A
Contact Resistance	30mOhm	20mOhm	20mOhm	15mOhm	30mOhm
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All four substitute parts are active products with current manufacturing status, addressing the obsolescence of the A-CCS32-Z-SM. Selection among these alternatives depends on compliance requirements and application constraints:

For RoHS3 compliance applications: 540-44-032-17-400000, 8432-21B1-RK-TR, and 940-44-032-17-400000 are suitable. The 69802-132LF offers RoHS compliance but with REACH affected status.

For extended temperature range: 540-44-032-17-400000, 69802-132LF, and 940-44-032-17-400000 support -55°C to 125°C operation, exceeding the original part's -55°C to 105°C range. The 8432-21B1-RK-TR operates to 105°C, matching the original specification.

For contact resistance performance: 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 and 940-44-032-17-400000 both specify 30mOhm.

For packaging format: 540-44-032-17-400000 and 940-44-032-17-400000 are supplied in tube packaging. The 69802-132LF is tube packaged. The 8432-21B1-RK-TR is supplied in tape and reel format, suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can any of these substitute parts directly replace the A-CCS32-Z-SM without PCB modification?

A: Yes. All substitute parts maintain the 0.050" (1.27mm) mating pitch, 32-position PLCC configuration, and surface mount termination. PCB footprints designed for the A-CCS32-Z-SM are compatible with all listed substitutes.

Q: What is the significance of the contact material differences?

A: Contact material variations (phosphor bronze, copper alloy, beryllium copper) do not affect functional compatibility. These materials are selected for specific performance characteristics such as contact resistance and durability. The tin plating on all mating surfaces ensures consistent electrical performance across all options.

Q: Why do some substitutes specify higher operating temperature ranges?

A: The substitute parts are designed for broader application ranges. If your application operates within the original -55°C to 105°C specification, parts rated to 125°C provide additional design margin without performance degradation.

Q: How does contact resistance variation impact part selection?

A: Contact resistance differences (15mOhm to 30mOhm) are within acceptable ranges for 1 A rated sockets. Selection based on contact resistance is appropriate only if your application has specific impedance or power dissipation constraints.

Q: What is the difference between RoHS and ROHS3 compliance?

A: ROHS3 represents the current RoHS Directive 2011/65/EU with amendments. RoHS Compliant indicates adherence to earlier RoHS standards. For new designs, ROHS3 compliant parts are preferred. The 69802-132LF meets RoHS Compliant status and is suitable for applications not requiring ROHS3 certification.

Q: Does packaging format affect electrical performance?

A: No. Tube and tape & reel packaging formats do not affect electrical characteristics. Packaging selection is driven by assembly process requirements and inventory management practices.

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