P3406UARP Equivalent & Substitute Parts

Part Overview

The P3406UARP is a 300V off-state, 150A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series. This component is designed for transient voltage suppression applications requiring high current handling in a compact 6-SMD gull wing package. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system support and procurement planning.

Substiute Parts

P3406UARP

Littelfuse Inc.In Stock: 937P3406UARP Datasheet

Current PartRFQ

P3406UALRP

LittelfuseIn Stock: 779P3406UALRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P3406UARP is determined by exact matching of the following critical parameters:

• Voltage ratings (breakover, off-state, and on-state)
• Peak pulse current specifications (both 8/20µs and 10/1000µs ratings)
• Hold current (Ih)
• Number of elements (6)
• Capacitance range (20pF, 30pF)
• Package configuration (6-SMD, Gull Wing)
• Mounting type (Surface Mount)

The P3406UALRP meets all substitution criteria, differing only in packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The P3406UALRP is the direct functional equivalent of the P3406UARP. Both components share identical electrical specifications and mechanical packaging. Selection between these parts should be based on the following factors:

Product Status: The P3406UALRP is active production, whereas the P3406UARP is obsolete. For new designs or ongoing procurement, the P3406UALRP is the appropriate choice.

Compliance Requirements: The P3406UALRP meets ROHS3 compliance standards, while the P3406UARP is non-compliant. Systems subject to RoHS regulations must use the P3406UALRP.

Packaging Format: The P3406UALRP is supplied in Tape & Reel format, suitable for automated assembly processes. The P3406UARP bulk packaging may be preferred only for manual assembly or low-volume applications where the component is already in inventory.

Frequently Asked Questions (FAQ)

Q: Can P3406UALRP be used as a direct replacement for P3406UARP in existing designs?

A: Yes. The P3406UALRP is electrically and mechanically identical to the P3406UARP. All voltage ratings, current specifications, and package dimensions are equivalent. The only differences are product status and packaging format.

Q: What is the difference between the bulk and Tape & Reel packaging?

A: Bulk packaging (P3406UARP) supplies components loose or in standard containers. Tape & Reel packaging (P3406UALRP) provides components on continuous tape suitable for automated pick-and-place assembly equipment. Both contain the same component.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental standards, not electrical or thermal performance. Both parts meet identical electrical specifications.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both components are from the same SIDACtor® series with identical thermal and reliability characteristics.

Q: Which part should be selected for new procurement?

A: The P3406UALRP should be selected for new designs and ongoing procurement. It is in active production, meets current compliance standards, and is available in standard manufacturing packaging.