MS3476W22-55B Equivalent & Substitute Parts

Part Overview

The MS3476W22-55B is a 55-position circular connector plug housing manufactured by TE Connectivity Deutsch Connectors. This connector is designed for free-hanging (in-line) applications with bayonet lock fastening and operates across a temperature range of -55°C to 175°C. The part is discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain functional compatibility while offering active product status and continued availability.

Key Parameters

Parameter	Value
Connector Type	Plug Housing
Type	For Female Sockets
Number of Positions	55
Shell Size - Insert	22-55
Contact Type	Crimp
Contact Size	20
Mounting Type	Free Hanging (In-Line)
Fastening Type	Bayonet Lock
Orientation	N (Normal)
Shell Material	Aluminum Alloy
Insert Material	Plastic
Contact Shape	Circular
Operating Temperature Range	-55°C ~ 175°C
Ingress Protection	Environment Resistant
Features	Coupling Nut
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the MS3476W22-55B are qualified based on strict electrical and mechanical parameter alignment. All substitute candidates maintain the following core parameters: 55-position configuration, shell size 22-55, crimp contact type with size 20, free-hanging in-line mounting, bayonet lock fastening, normal orientation, aluminum alloy shell construction, plastic insert material, and circular contact shape. All substitutes provide environment-resistant ingress protection and coupling nut features.

Substitutes are differentiated by three primary parameters: shell finish (chromate over cadmium, electroless nickel, or anodized), shielding configuration (shielded or unshielded), and operating temperature maximum rating (175°C or 200°C). These variations allow selection based on specific environmental and thermal requirements while maintaining full mechanical and electrical compatibility with the original MS3476W22-55B connector interface.

Parameter Comparison

Parameter	MS3476W22-55B	PV75L22-55SL	PV75W22-55SL	PV76A22-55SL	PV76L22-55SL	PV76W22-55SL
Manufacturer	TE Connectivity Deutsch	ITT Cannon, LLC	ITT Cannon, LLC	ITT Cannon, LLC	ITT Cannon, LLC	ITT Cannon, LLC
Connector Type	Plug Housing	Plug Housing	Plug Housing	Plug Housing	Plug Housing	Plug Housing
Type	For Female Sockets	For Female Sockets	For Female Sockets	For Female Sockets	For Female Sockets	For Female Sockets
Number of Positions	55	55	55	55	55	55
Shell Size - Insert	22-55	22-55	22-55	22-55	22-55	22-55
Contact Type	Crimp	Crimp	Crimp	Crimp	Crimp	Crimp
Contact Size	20	20	20	20	20	20
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Fastening Type	Bayonet Lock	Bayonet Lock	Bayonet Lock	Bayonet Lock	Bayonet Lock	Bayonet Lock
Orientation	N (Normal)	N (Normal)	N (Normal)	N (Normal)	N (Normal)	N (Normal)
Shell Material	Aluminum Alloy	Aluminum Alloy	Aluminum Alloy	Aluminum Alloy	Aluminum Alloy	Aluminum Alloy
Shell Finish	Chromate over Cadmium	Electroless Nickel	Chromate over Cadmium	Anodized	Electroless Nickel	Chromate over Cadmium
Housing Color	Olive Drab	Silver	Olive Drab	Not Specified	Silver	Olive Drab
Insert Material	Plastic	Plastic	Plastic	Plastic	Plastic	Plastic
Contact Shape	Circular	Circular	Circular	Circular	Circular	Circular
Ingress Protection	Environment Resistant	Environment Resistant	Environment Resistant	Environment Resistant	Environment Resistant	Environment Resistant
Features	Coupling Nut	Coupling Nut	Coupling Nut	Coupling Nut	Coupling Nut	Coupling Nut
Shielding	Unshielded	Shielded	Shielded	Unshielded	Unshielded	Unshielded
Operating Temperature	-55°C ~ 175°C	-55°C ~ 200°C	-55°C ~ 200°C	-55°C ~ 200°C	-55°C ~ 200°C	-55°C ~ 200°C
Product Status	Discontinued	Active	Active	Active	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant

Engineering Selection Recommendations

All substitute parts listed maintain full mechanical and electrical compatibility with the MS3476W22-55B interface. Selection among substitutes is determined by application-specific requirements for shell finish, shielding, and thermal performance.

For applications requiring unshielded configuration matching the original MS3476W22-55B: PV76L22-55SL, PV76W22-55SL, and PV76A22-55SL provide direct functional equivalence. PV76L22-55SL offers electroless nickel finish with extended temperature rating to 200°C. PV76W22-55SL provides chromate over cadmium finish with extended temperature rating to 200°C. PV76A22-55SL offers anodized finish with extended temperature rating to 200°C.

For applications requiring shielded configuration: PV75L22-55SL and PV75W22-55SL provide shielded alternatives. PV75L22-55SL features electroless nickel finish with extended temperature rating to 200°C. PV75W22-55SL features chromate over cadmium finish with extended temperature rating to 200°C.

All substitute parts are manufactured by ITT Cannon, LLC and carry active product status, ensuring continued availability and supply chain reliability. All substitutes maintain MSL 1 (Unlimited) moisture sensitivity classification and RoHS non-compliant status consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can PV75L22-55SL, PV75W22-55SL, PV76A22-55SL, PV76L22-55SL, and PV76W22-55SL be used interchangeably with MS3476W22-55B?

A: These parts are mechanically and electrically compatible for connector interface applications. All maintain identical position count (55), shell size (22-55), contact type (crimp, size 20), mounting configuration (free-hanging in-line), fastening method (bayonet lock), and insert material (plastic). Substitution is valid when application requirements align with the specific shell finish, shielding configuration, and operating temperature range of the selected substitute.

Q: What is the difference between shielded and unshielded substitute options?

A: The MS3476W22-55B is unshielded. Unshielded substitutes (PV76L22-55SL, PV76W22-55SL, PV76A22-55SL) maintain this configuration. Shielded substitutes (PV75L22-55SL, PV75W22-55SL) provide electromagnetic shielding and are selected when applications require noise immunity or EMI suppression. Shielded and unshielded variants are not interchangeable in applications where shielding performance is specified.

Q: How do shell finish options affect part selection?

A: Shell finish determines corrosion resistance and environmental performance. Chromate over cadmium finish (MS3476W22-55B, PV75W22-55SL, PV76W22-55SL) provides standard military-grade corrosion protection. Electroless nickel finish (PV75L22-55SL, PV76L22-55SL) offers enhanced corrosion resistance in harsh environments. Anodized finish (PV76A22-55SL) provides lightweight corrosion protection. Selection depends on environmental exposure and application requirements.

Q: What is the significance of the extended operating temperature range in substitute parts?

A: The MS3476W22-55B operates from -55°C to 175°C. All substitute parts extend the maximum operating temperature to 200°C. This extended range provides additional thermal margin for applications approaching the original part's temperature limit. Applications operating within the original -55°C to 175°C range are fully compatible with any substitute. Applications requiring operation above 175°C require selection of substitute parts with the 200°C rating.

Q: Are all substitute parts available in the same packaging format?

A: The MS3476W22-55B is packaged individually. All substitute parts are supplied in bulk packaging. Bulk packaging does not affect connector functionality or compatibility; it reflects inventory and distribution practices of ITT Cannon, LLC.

Q: What compliance certifications apply to these substitute parts?

A: All parts, including MS3476W22-55B and all substitutes, carry RoHS non-compliant status and MSL 1 (Unlimited) moisture sensitivity classification. All are classified under ECCN EAR99 for export control purposes. Compliance requirements must be evaluated against specific application and regulatory jurisdiction requirements.

Q: Why is the MS3476W22-55B discontinued?

A: Product discontinuation is a manufacturer decision. Active substitute parts from ITT Cannon, LLC provide equivalent functionality with continued availability and supply chain support. Selection of an active substitute ensures long-term component availability for production and maintenance applications.

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