AXF5B4012 Equivalent & Substitute Parts

Part Overview

The AXF5B4012 is a 40-position rectangular connector socket manufactured by Panasonic Electric Works, designed for surface mount applications with center strip contacts and gold plating. This connector is classified as "Not For New Designs," indicating it has been superseded in the product portfolio. The part operates with a 0.35mm pitch and provides solder retention features suitable for flexible printed circuit (FPC) board interconnections.

Due to its obsolescence status, identifying equivalent substitute parts with matching electrical and mechanical specifications is necessary for design continuity and component sourcing in production environments.

Key Parameters

Parameter	Specification
Connector Type	Socket, Center Strip Contacts
Number of Positions	40
Pitch	0.014" (0.35mm)
Number of Rows	2
Mounting Type	Surface Mount
Contact Finish	Gold
Mated Stacking Height	0.6mm
Height Above Board	0.023" (0.59mm)
Features	Solder Retention
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the AXF5B4012 is determined by strict equivalence across the following critical parameters:

Connector Type: Socket configuration with center strip contacts
Position Count: 40-position arrangement
Pitch Specification: 0.014" (0.35mm) contact spacing
Row Configuration: 2-row layout
Mounting Technology: Surface mount capability
Contact Material: Gold finish
Mechanical Dimensions: Mated stacking height of 0.6mm and height above board of 0.023" (0.59mm)
Functional Features: Solder retention capability
Regulatory Compliance: RoHS compliance and MSL rating of 1

Both substitute parts—AXG140144 and AXG740044—satisfy all these parameters identically to the main part. The substitutes differ only in series designation (S35 and A35US respectively) and product status (Active), making them direct functional equivalents.

Parameter Comparison

Parameter	AXF5B4012 (Main)	AXG140144 (Substitute)	AXG740044 (Substitute)
Manufacturer	Panasonic Electric Works	Panasonic Electric Works	Panasonic Electric Works
Category	Rectangular Connectors	Rectangular Connectors	Rectangular Connectors
Connector Type	Socket, Center Strip Contacts	Socket, Center Strip Contacts	Socket, Center Strip Contacts
Number of Positions	40	40	40
Pitch	0.014" (0.35mm)	0.014" (0.35mm)	0.014" (0.35mm)
Number of Rows	2	2	2
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Contact Finish	Gold	Gold	Gold
Mated Stacking Height	0.6mm	0.6mm	0.6mm
Height Above Board	0.023" (0.59mm)	0.023" (0.59mm)	0.023" (0.59mm)
Features	Solder Retention	Solder Retention	Solder Retention
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040
Product Status	Not For New Designs	Active	Active

Engineering Selection Recommendations

AXG140144 is the primary substitute for the AXF5B4012. This part carries Active product status and is available in Tape & Reel packaging with 15,100 units in stock. The AXG140144 belongs to the S35 series and provides full electrical and mechanical compatibility with the obsolete AXF5B4012.

AXG740044 is an alternative substitute with identical electrical and mechanical specifications. This part is also Active and available in Tape & Reel packaging with 661 units in stock. The AXG740044 belongs to the A35US series and offers equivalent functionality.

Both substitutes maintain RoHS compliance, MSL rating of 1, and identical export classification (EAR99). Selection between AXG140144 and AXG740044 should be based on packaging requirements, inventory availability, and series compatibility with existing designs. The higher inventory level of AXG140144 may provide supply chain advantages for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can AXG140144 or AXG740044 be used as direct replacements for AXF5B4012 in existing designs?

A: Yes. Both substitute parts are electrically and mechanically equivalent to the AXF5B4012 across all critical parameters including connector type, position count, pitch, mounting type, contact finish, and dimensional specifications. No design modifications are required for substitution.

Q: What is the difference between AXG140144 and AXG740044?

A: The parts are functionally identical in all electrical and mechanical parameters. The primary differences are series designation (S35 versus A35US) and inventory availability (15,100 units versus 661 units respectively). Both are manufactured by Panasonic Electric Works and carry Active product status.

Q: Why is the AXF5B4012 marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's product portfolio. The substitute parts AXG140144 and AXG740044 represent the current active alternatives and should be used for new design implementations.

Q: Are there packaging differences between the main part and substitutes?

A: The AXF5B4012 packaging specification is not provided in the available data. Both substitute parts are supplied in Tape & Reel (TR) packaging, which is standard for surface mount rectangular connectors in production environments.

Q: Do the substitute parts maintain the same compliance certifications?

A: Yes. Both AXG140144 and AXG740044 are RoHS Compliant with MSL rating of 1 (Unlimited), matching the AXF5B4012. Export classification (EAR99) and HTSUS code (8536.69.4040) are identical across all three parts.

Q: What is the mated stacking height and how does it affect board layout?

A: The mated stacking height is 0.6mm for all three parts. This dimension defines the vertical distance when the connector is fully mated and is critical for PCB stackup calculations and component clearance planning in compact assemblies.

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