TE Connectivity Erni 394903 Equivalent & Substitute Parts

Part Overview

The TE Connectivity Erni 394903 is a 3-position receptacle blade power connector designed for PCB mounting applications. This component is classified as Obsolete and is no longer in active production. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for ongoing system maintenance, repair, and new design implementations where legacy compatibility is required.

The primary substitute for this connector is the TE Connectivity AMP Connectors 5223955-2, which maintains functional equivalence while offering active product status and improved availability.

Substiute Parts

394903

TE Connectivity ErniIn Stock: 949394903 Datasheet

Current PartRFQ

5223955-2

TE Connectivity AMP ConnectorsIn Stock: 23195223955-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity Erni 394903 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Number of Positions: 3 positions (exact match required)
• Connector Type: Receptacle with female blade sockets (exact match required)
• Connector Style: Blade power configuration (exact match required)
• Mounting Type: Through hole PCB mounting (exact match required)
• Voltage Rating: 250V minimum (substitute must meet or exceed)
• Operating Temperature Range: -55°C to 125°C (substitute must support or exceed this range)
• RoHS Compliance: ROHS3 compliant (substitute must maintain compliance status)

The substitute part 5223955-2 satisfies all critical parameters and is classified as an MFR Recommended equivalent by TE Connectivity, indicating manufacturer-validated functional interchangeability.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Future Applications: Select TE Connectivity AMP Connectors 5223955-2 as the primary component choice. This part is in active production status with robust inventory availability (2284 pcs), ensuring supply chain continuity and long-term component sourcing reliability.

For Legacy System Maintenance: The original TE Connectivity Erni 394903 remains available in limited stock (864 pcs) for direct replacement in existing systems where exact part number matching is mandated by design specifications or regulatory requirements.

Compliance Considerations: The substitute part 5223955-2 maintains ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory standards. The UL94 V-0 flammability rating provides enhanced material safety certification.

Supply Chain Strategy: Given the obsolete status of 394903, transition planning to 5223955-2 is recommended for any new production runs or system redesigns to eliminate future supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can 5223955-2 be used as a direct replacement for 394903 in existing PCB assemblies?

A: Yes. Both connectors share identical functional specifications: 3-position receptacle blade power configuration with through-hole PCB mounting. The mechanical and electrical interfaces are compatible. Physical form factor and pin layout alignment should be verified during integration.

Q: What is the primary reason for substituting 394903?

A: The 394903 is classified as obsolete and no longer manufactured. The 5223955-2 is the manufacturer-recommended equivalent in active production, ensuring long-term availability and supply chain stability.

Q: Are there any electrical performance differences between these parts?

A: Both connectors operate at 250V with identical 3-position blade power specifications. The 5223955-2 provides documented operating temperature range (-55°C to 125°C) and UL94 V-0 flammability certification, offering enhanced technical documentation and safety compliance.

Q: What packaging format is the substitute available in?

A: The 5223955-2 is supplied in tube packaging, suitable for both manual and automated assembly processes.

Q: Are both parts RoHS compliant?

A: The substitute part 5223955-2 is ROHS3 compliant and REACH unaffected. Compliance status for the obsolete 394903 is not documented in available specifications.

Q: What is the contact finish specification for the substitute?

A: The 5223955-2 features gold or gold-palladium contact finish, providing corrosion resistance and reliable electrical conductivity for power applications.