AXG8400J4 Equivalent & Substitute Parts

Part Overview

The AXG8400J4 is a 42-position rectangular connector plug manufactured by Panasonic Electric Works, featuring outer shroud contacts and surface mount gold plating. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity. The connector is designed for applications requiring high-density interconnection with reliable solder retention and gold contact finish for enhanced signal integrity.

Substiute Parts

AXG8400J4

Panasonic Electric WorksIn Stock: 840AXG8400J4 Datasheet

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AXF6D4012

Panasonic Electric WorksIn Stock: 1110AXF6D4012 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AXG8400J4 is based on the following critical parameters that must align for functional compatibility:

Mandatory Matching Parameters:

• Pitch: 0.014" (0.35mm)
• Number of Rows: 2
• Mounting Type: Surface Mount
• Contact Finish: Gold
• Mated Stacking Height: 0.6mm
• Height Above Board: 0.018" (0.46mm)
• RoHS Compliance: Required
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation:

• Connector Type: The AXG8400J4 is a plug configuration. The substitute AXF6D4012 is a header configuration, which forms a complementary mating pair within the A35 series connector family.
• Number of Positions: The main part includes 42 positions (40 + 2 power). The substitute provides 40 positions without dedicated power pins, representing a reduced-position variant within the same electrical and mechanical envelope.

The AXF6D4012 satisfies all critical mechanical and electrical parameters while maintaining compatibility with the A35 connector series architecture.

Parameter Comparison

Engineering Selection Recommendations

The AXF6D4012 is the designated substitute for the obsolete AXG8400J4. Selection is justified on the following engineering criteria:

Compliance & Availability: The AXG8400J4 is obsolete with no ongoing manufacturing support. The AXF6D4012 maintains active product status with 1015 units in current inventory, ensuring supply chain continuity and long-term availability.

Regulatory Alignment: Both components are RoHS Compliant and carry identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited), meeting environmental and reliability standards without additional qualification requirements.

Mechanical & Electrical Compatibility: The substitute maintains identical pitch (0.014"), row configuration (2), mounting method (Surface Mount), contact finish (Gold), and stacking heights. These parameters ensure direct mechanical interchangeability within the connector interface.

Series Architecture: Both components belong to the Panasonic A35 connector family (A35US for plug, A35UH for header), confirming design compatibility and mating pair functionality within the established connector ecosystem.

Frequently Asked Questions (FAQ)

Q: Can the AXF6D4012 directly replace the AXG8400J4 in existing designs?

A: The AXF6D4012 is a header configuration while the AXG8400J4 is a plug configuration. These components form complementary mating pairs within the A35 series. Direct replacement requires that the mating connector on the PCB or cable assembly is also updated to the corresponding A35UH header type. The mechanical and electrical parameters are fully compatible.

Q: What is the difference in position count between these connectors?

A: The AXG8400J4 provides 42 positions (40 signal + 2 dedicated power pins), while the AXF6D4012 provides 40 positions. If your design requires dedicated power pins, alternative configurations within the A35 series should be evaluated. If power distribution is handled through standard signal pins, the 40-position variant is functionally equivalent.

Q: Are there packaging differences between these parts?

A: The AXG8400J4 packaging is not specified in available documentation. The AXF6D4012 is supplied in Tape & Reel (TR) format, which is standard for surface mount production. Confirm packaging requirements with your procurement or manufacturing team.

Q: Do both connectors meet the same environmental and compliance standards?

A: Yes. Both components are RoHS Compliant, carry MSL rating 1 (Unlimited), and are classified under ECCN EAR99 with identical HTSUS code 8536.69.4040. No additional environmental qualification is required for substitution.

Q: What is the pitch specification and why does it matter?

A: Both connectors maintain a pitch of 0.014" (0.35mm), which defines the center-to-center spacing between contact positions. This parameter is critical for PCB layout and mating connector compatibility. Identical pitch ensures direct mechanical interchangeability.