A-TB350-OP03 Equivalent & Substitute Parts

Part Overview

The A-TB350-OP03 is a 3-position terminal block header manufactured by Assmann WSW Components. This component features male pins in an unshrouded configuration with a 0.138" (4.60mm) vertical pitch, designed for through-hole solder termination. The part is currently active in production with 1162 units in stock. Terminal block headers of this specification are essential in applications requiring reliable electrical connections for power distribution, signal routing, and modular circuit interconnection. Substitute parts may be required due to supply constraints, lead time considerations, or design standardization across manufacturing facilities.

Substiute Parts

A-TB350-OP03

Assmann WSW ComponentsIn Stock: 1269A-TB350-OP03 Datasheet

Current PartRFQ

1945106

Phoenix ContactIn Stock: 186471945106 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A-TB350-OP03 is determined by strict alignment of the following critical parameters:

• Position Count: Must be exactly 3 positions
• Pitch Specification: Must be 0.138" (4.60mm)
• Header Configuration: Must be male pins, unshrouded
• Orientation: Must be vertical
• Termination Method: Must be solder-compatible through-hole
• Electrical Ratings: Must meet or exceed UL voltage (300 V) and current (10 A) specifications
• Compliance Standards: Must maintain ROHS3 compliance and UL94 V-0 flammability rating

The Phoenix Contact 1945106 satisfies all substitution criteria. Both components share identical position count, pitch, header type, orientation, and termination methodology. Both maintain equivalent electrical ratings under UL standards and comply with ROHS3 and UL94 V-0 requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the A-TB350-OP03 and 1945106 are active production components with full ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on availability, lead time requirements, and supply chain considerations. The Phoenix Contact 1945106 currently maintains higher inventory levels (18622 units) compared to the Assmann WSW component (1162 units), which may influence procurement decisions for high-volume applications. Both components are classified as REACH Unaffected and carry EAR99 export classification, ensuring equivalent regulatory standing.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1945106 be used as a direct replacement for the A-TB350-OP03?

A: Yes. Both components share identical electrical specifications (300 V UL, 10 A UL), matching pitch (0.138" / 4.60mm), identical position configuration (3-position), and equivalent compliance certifications (ROHS3, UL94 V-0). The components are mechanically and electrically interchangeable for through-hole solder applications.

Q: Are there dimensional differences between these parts?

A: The contact tail length differs slightly (A-TB350-OP03: 0.138" / 4.60mm versus 1945106: 0.150" / 3.81mm). The insulation height also varies (A-TB350-OP03: 0.079" / 2.00mm versus 1945106: 0.512" / 13.00mm). These dimensional variations must be evaluated against specific PCB layout and clearance requirements in the target application.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both components are ROHS3 compliant, UL94 V-0 rated, REACH Unaffected, and classified as EAR99 for export purposes. Both carry identical HTSUS classification (8536.69.4040).

Q: What is the current rating for these terminal blocks?

A: Both components are rated for 10 A under UL standards. The Phoenix Contact 1945106 additionally specifies 8 A under IEC standards, while the A-TB350-OP03 does not provide IEC current rating data.

Q: Are these components suitable for high-temperature applications?

A: The A-TB350-OP03 specifies an operating temperature range of -40°C to 115°C. The Phoenix Contact 1945106 does not provide operating temperature data in the available specifications. Temperature requirements should be confirmed against application demands.