A-CCS44-Z-SM PLCC 44-Position Socket Equivalent & Substitute Parts

Part Overview

The A-CCS44-Z-SM is a 44-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 identification of functionally equivalent alternatives essential for ongoing production support and design continuity. Substitute parts must maintain electrical and mechanical compatibility across the 44 (4 x 11) pin configuration while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	Value
Type	PLCC Socket
Number of Positions	44 (4 x 11)
Pitch - Mating	0.050" (1.27mm)
Pitch - Post	0.050" (1.27mm)
Contact Finish - Mating	Tin
Contact Finish Thickness - Mating	150.0µin (3.81µm)
Mounting Type	Surface Mount
Features	Closed Frame
Termination	Solder
Material Flammability Rating	UL94 V-0
Current Rating	1 A
Operating Temperature Range	-55°C ~ 105°C
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the A-CCS44-Z-SM is determined by strict equivalence across the following critical parameters:

Pin Configuration: 44 positions in 4 x 11 grid arrangement
Pitch Specifications: 0.050" (1.27mm) mating and post pitch
Contact Finish: Tin plating on mating surface
Mounting Technology: Surface mount solder termination
Frame Design: Closed frame construction
Flammability Compliance: UL94 V-0 rating
Current Capacity: 1 A minimum rating
Environmental Classification: MSL 1 (Unlimited moisture sensitivity)

All four substitute parts meet these core electrical and mechanical requirements. Variations in contact material composition, housing polymer selection, and contact resistance do not preclude functional substitution when these primary parameters align.

Parameter Comparison

Parameter	A-CCS44-Z-SM (Main)	540-44-044-17-400000	69802-044LF	69802-144LF	940-44-044-17-400000
Manufacturer	Assmann WSW	Mill-Max	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Mill-Max
Product Status	Obsolete	Active	Active	Active	Active
Type	PLCC	PLCC	PLCC	PLCC	PLCC
Positions	44 (4 x 11)	44 (4 x 11)	44 (4 x 11)	44 (4 x 11)	44 (4 x 11)
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)	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)	0.050" (1.27mm)	0.050" (1.27mm)
Contact Finish - Mating	Tin	Tin	Tin	Tin	Tin
Contact Finish Thickness - Mating	150.0µin (3.81µm)	150.0µin (3.81µm)	150.0µin (3.81µm)	150.0µin (3.81µm)	150.0µin (3.81µm)
Contact Material - Mating	Phosphor Bronze	Copper Alloy	Phosphor Bronze	Phosphor Bronze	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
Termination	Solder	Solder	Solder	Solder	Solder
Housing Material	PBT, Glass Filled	PPS	PPS	PPS	PCT, Polyester
Operating Temperature	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	1 A	Not specified	1 A	1 A	1 A
Contact Resistance	30mOhm	20mOhm	20mOhm	20mOhm	30mOhm
RoHS Status	Non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Affected	REACH Affected	REACH Unaffected

Engineering Selection Recommendations

Primary Substitutes (Active Status, Enhanced Compliance)

The 69802-044LF and 69802-144LF from Amphenol ICC (FCI) are functionally equivalent to the A-CCS44-Z-SM with the following distinctions: both maintain RoHS compliance and operate across an extended temperature range (-55°C ~ 125°C versus -55°C ~ 105°C). Contact resistance is improved at 20mOhm compared to the original 30mOhm specification. Both parts are actively manufactured with substantial inventory availability (5665 and 3200 units respectively). REACH status is listed as affected for these parts.

Secondary Substitutes (Mill-Max Series)

The 540-44-044-17-400000 and 940-44-044-17-400000 from Mill-Max Manufacturing Corp. provide alternative substitution paths with ROHS3 compliance and REACH unaffected status. The 540 series uses copper alloy mating contacts with 20mOhm resistance and polyphenylene sulfide housing. The 940 series employs beryllium copper mating contacts with 30mOhm resistance and polyester housing. Both operate at -55°C ~ 125°C and maintain 1 A current rating.

Compliance Considerations

All substitute parts achieve UL94 V-0 flammability rating and MSL 1 classification. The original A-CCS44-Z-SM is RoHS non-compliant; all substitutes provide RoHS compliance pathways. Selection between Amphenol ICC and Mill-Max options depends on REACH regulatory requirements for the end application.

Frequently Asked Questions (FAQ)

Q: Can the 69802-044LF directly replace the A-CCS44-Z-SM in existing PCB designs?

A: Yes. Both parts share identical pin pitch (0.050"), position count (44), mounting type (surface mount), and solder termination. PCB footprints are compatible. The extended operating temperature range (-55°C ~ 125°C) of the substitute provides additional thermal margin.

Q: What is the difference between 69802-044LF and 69802-144LF?

A: Both are Amphenol ICC PLCC 44-position sockets with identical electrical and mechanical specifications. The designation difference reflects internal manufacturing or packaging variants. Both are functionally equivalent for substitution purposes.

Q: How do the Mill-Max 540 and 940 series differ?

A: The 540-44-044-17-400000 uses copper alloy mating contacts with polyphenylene sulfide housing. The 940-44-044-17-400000 uses beryllium copper mating contacts with polyester housing. Both maintain 0.050" pitch and 44-position configuration. Contact material selection may influence mechanical durability in high-cycle insertion applications.

Q: Are there compliance differences between substitute options?

A: All substitutes are RoHS compliant. The Amphenol ICC parts (69802 series) carry REACH affected status, while Mill-Max parts (540 and 940 series) are REACH unaffected. Selection depends on regulatory requirements for the target market and application.

Q: What is the impact of improved contact resistance in substitute parts?

A: Substitute parts specify 20mOhm contact resistance compared to the original 30mOhm. Lower contact resistance reduces voltage drop and heat generation during operation, providing improved electrical performance within the 1 A current rating.

Q: Can substitutes be mixed in the same production run?

A: Yes. All four substitute parts meet the core electrical and mechanical parameters of the A-CCS44-Z-SM. However, design documentation and traceability records should reflect the specific part number used to maintain manufacturing consistency and warranty documentation.

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