MS3476L12-3B Equivalent & Substitute Parts

Part Overview

The MS3476L12-3B is a 3-position circular connector plug housing manufactured by TE Connectivity Deutsch Connectors. This component is designed for female sockets with free-hanging (in-line) mounting and bayonet lock fastening. The part is classified as discontinued at DiGi Electronics, necessitating identification of equivalent substitute components for ongoing system support and procurement requirements. The connector operates across a wide temperature range of -55°C to 200°C and features electroless nickel shell finish with aluminum alloy construction.

Key Parameters

Parameter	Value
Connector Type	Plug Housing for Female Sockets
Number of Positions	3
Shell Size - Insert	12-3
Mounting Type	Free Hanging (In-Line)
Fastening Type	Bayonet Lock
Contact Type	Crimp
Contact Size	16
Shell Material	Aluminum Alloy
Operating Temperature Range	-55°C to 200°C
Orientation	N (Normal)
Features	Coupling Nut
Ingress Protection	Environment Resistant

Substitute Part Grouping Explanation

Substitution eligibility for the MS3476L12-3B is determined by strict alignment with the following core parameters: connector type (plug housing for female sockets), number of positions (3), shell size-insert designation (12-3), mounting type (free hanging in-line), fastening type (bayonet lock), contact type (crimp), contact size (16), shell material (aluminum alloy), and operating temperature range (-55°C to 200°C). All substitute parts must maintain these specifications to ensure mechanical and electrical compatibility within the original application.

The substitute parts are grouped into two functional categories:

Category 1: Plug Housing Substitutes with Coupling Nut Parts PV75L12-3SL, PV76L12-3SL, and PV76W12-3SL are plug housing configurations that directly match the MS3476L12-3B form factor and include coupling nut features. These parts maintain identical contact specifications, mounting characteristics, and temperature ratings.

Category 2: Complete Plug Assemblies with Female Sockets Parts KPSE6E123S-DN-A34 and PT06SE-12-3S are complete connector plugs with integrated female sockets and crimp termination. These parts satisfy the core mechanical and electrical parameters but represent a different assembly configuration suitable for applications requiring pre-assembled socket integration.

Parameter Comparison

Parameter	MS3476L12-3B	PV75L12-3SL	PV76L12-3SL	PV76W12-3SL	KPSE6E123S-DN-A34	PT06SE-12-3S
Manufacturer	TE Connectivity Deutsch	ITT Cannon, LLC	ITT Cannon, LLC	ITT Cannon, LLC	ITT Cannon, LLC	Amphenol Industrial Operations
Connector Type	Plug Housing	Plug Housing	Plug Housing	Plug Housing	Plug, Female Sockets	Plug, Female Sockets
Number of Positions	3	3	3	3	3	3
Shell Size - Insert	12-3	12-3	12-3	12-3	12-3	12-3
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
Contact Type	Crimp	Crimp	Crimp	Crimp	Crimp	Crimp
Contact Size	16	16	16	16	N/A	N/A
Shell Material	Aluminum Alloy	Aluminum Alloy	Aluminum Alloy	Aluminum Alloy	Aluminum Alloy	Aluminum
Shell Finish	Electroless Nickel	Electroless Nickel	Electroless Nickel	Chromate over Cadmium	Nickel	Olive Drab Chromate over Cadmium
Housing Color	Silver	Silver	Silver	Olive Drab	Silver	Olive Drab
Orientation	N (Normal)	N (Normal)	N (Normal)	N (Normal)	N (Normal)	N (Normal)
Operating Temperature	-55°C to 200°C	-55°C to 200°C	-55°C to 200°C	-55°C to 200°C	-55°C to 125°C	-55°C to 125°C
Ingress Protection	Environment Resistant	Environment Resistant	Environment Resistant	Environment Resistant	IP67 - Dust Tight, Waterproof	Environment Sealed
Shielding	Unshielded	Shielded	Unshielded	Unshielded	Unshielded	Unshielded
Features	Coupling Nut	Coupling Nut	Coupling Nut	Coupling Nut	N/A	N/A
Product Status	Discontinued at DiGi Electronics	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Non-compliant	Non-compliant	Non-compliant	Compliant	Non-compliant

Engineering Selection Recommendations

For Direct Form-Factor Replacement:

The PV75L12-3SL, PV76L12-3SL, and PV76W12-3SL connectors from ITT Cannon, LLC provide direct mechanical and electrical substitution for the MS3476L12-3B. All three parts maintain identical connector type (plug housing), position count (3), shell size (12-3), mounting configuration (free hanging in-line), fastening mechanism (bayonet lock), contact specifications (crimp, size 16), shell material (aluminum alloy), and operating temperature range (-55°C to 200°C). These parts are currently in active production status with substantial inventory availability (808 to 1041 pieces).

PV76L12-3SL and PV76W12-3SL are functionally equivalent with differences limited to shell finish and housing color. PV76L12-3SL features electroless nickel finish with silver housing, matching the original MS3476L12-3B aesthetic. PV76W12-3SL provides chromate over cadmium finish with olive drab housing for applications requiring alternative corrosion protection profiles.

PV75L12-3SL differs from the original part by incorporating shielded construction, suitable for applications requiring electromagnetic interference mitigation.

For Complete Assembly Applications:

The KPSE6E123S-DN-A34 and PT06SE-12-3S represent complete plug assemblies with integrated female sockets, eliminating the requirement for separate socket insertion. Both parts satisfy core mechanical parameters (3 positions, shell size 12-3, bayonet lock, free hanging mounting, crimp termination). These parts operate at reduced maximum temperature (-55°C to 125°C) compared to the original specification and are therefore suitable only for applications within this narrower thermal envelope.

KPSE6E123S-DN-A34 holds RoHS compliant status, whereas PT06SE-12-3S maintains RoHS non-compliant classification consistent with the original MS3476L12-3B.

Frequently Asked Questions (FAQ)

Q: Can PV75L12-3SL, PV76L12-3SL, or PV76W12-3SL be used as direct replacements for MS3476L12-3B?

A: Yes. These three ITT Cannon parts maintain identical specifications for connector type, position count, shell size, mounting type, fastening mechanism, contact type and size, shell material, and operating temperature range. All three are currently in active production with available inventory.

Q: What is the difference between PV76L12-3SL and PV76W12-3SL?

A: Both parts are functionally equivalent plug housings with identical mechanical and electrical characteristics. The primary differences are shell finish (electroless nickel versus chromate over cadmium) and housing color (silver versus olive drab). Selection between these variants depends on corrosion protection requirements and color-coding specifications for the application.

Q: Why does PV75L12-3SL differ from the other PV series substitutes?

A: PV75L12-3SL incorporates shielded construction, whereas PV76L12-3SL and PV76W12-3SL are unshielded. The original MS3476L12-3B is unshielded. PV75L12-3SL is suitable for applications requiring electromagnetic interference protection; however, the shielding feature represents a design modification from the original specification.

Q: Can KPSE6E123S-DN-A34 or PT06SE-12-3S replace MS3476L12-3B in all applications?

A: These parts satisfy core mechanical and electrical parameters but operate at maximum temperature of -55°C to 125°C, compared to the original -55°C to 200°C specification. Substitution is limited to applications operating within the reduced temperature range. Additionally, these are complete plug assemblies with integrated female sockets, whereas MS3476L12-3B is a plug housing requiring separate socket insertion.

Q: What is the inventory status of substitute parts?

A: All substitute parts are currently in active production with available inventory: PV75L12-3SL (808 pieces), PV76L12-3SL (1041 pieces), PV76W12-3SL (909 pieces), KPSE6E123S-DN-A34 (780 pieces), and PT06SE-12-3S (1214 pieces).

Q: Are there RoHS compliance considerations for substitution?

A: The original MS3476L12-3B is RoHS non-compliant. Substitute parts PV75L12-3SL, PV76L12-3SL, PV76W12-3SL, and PT06SE-12-3S maintain RoHS non-compliant status. KPSE6E123S-DN-A34 is RoHS compliant and may be required for applications subject to RoHS regulatory requirements.

Q: What does "Contacts Not Included" mean for the plug housing parts?

A: The plug housing variants (MS3476L12-3B, PV75L12-3SL, PV76L12-3SL, PV76W12-3SL) are housing assemblies without pre-installed contacts. Contacts must be separately procured and crimped into the housing. The complete plug assemblies (KPSE6E123S-DN-A34, PT06SE-12-3S) include integrated female sockets and do not require separate contact installation.

Q: How do ingress protection ratings differ among substitutes?

A: MS3476L12-3B provides environment resistant protection. PV75L12-3SL, PV76L12-3SL, and PV76W12-3SL maintain environment resistant classification. KPSE6E123S-DN-A34 provides enhanced IP67 rating (dust tight, waterproof). PT06SE-12-3S provides environment sealed protection. Selection depends on application environmental exposure requirements.

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