P3403UATP Equivalent & Substitute Parts

Part Overview

The P3403UATP 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 surface mount package. The part is currently listed as obsolete, making identification of compatible substitutes essential for ongoing design support and procurement planning.

Substiute Parts

P3403UATP

Littelfuse Inc.In Stock: 1062P3403UATP Datasheet

Current PartRFQ

P3403UALTP

Littelfuse Inc.In Stock: 868P3403UALTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The P3403UALTP qualifies as a direct substitute for the P3403UATP based on identical electrical and mechanical parameters. Both parts share the same voltage ratings (400V breakover, 300V off-state, 8V on-state), current specifications (150A peak pulse at 8/20µs, 45A at 10/1000µs, 150mA hold current), element count (3), capacitance values (45pF, 65pF), and physical package configuration (6-SMD, Gull Wing, Modified MS-013). The substitution is valid across all critical performance criteria that determine functional equivalence in transient voltage suppression circuits.

Parameter Comparison

Engineering Selection Recommendations

The P3403UALTP is the appropriate substitute for the obsolete P3403UATP. Both parts are electrically and mechanically identical across all specified parameters. The P3403UALTP offers the additional advantage of active product status and ROHS3 compliance, making it suitable for new designs and applications requiring regulatory compliance. The identical MSL rating (1, Unlimited) ensures equivalent moisture handling during storage and assembly. Selection of the P3403UALTP eliminates obsolescence risk while maintaining full functional compatibility.

Frequently Asked Questions (FAQ)

Q: Are the P3403UATP and P3403UALTP electrically interchangeable? A: Yes. Both parts share identical voltage ratings (400V breakover, 300V off-state, 8V on-state), current specifications (150A peak pulse at 8/20µs, 45A at 10/1000µs, 150mA hold current), and capacitance values (45pF, 65pF).

Q: What is the difference between these two part numbers? A: The primary differences are product status and packaging. The P3403UATP is obsolete with RoHS non-compliant status, while the P3403UALTP is active and ROHS3 compliant. Both use identical 6-SMD, Gull Wing packages with Modified MS-013 supplier device packaging.

Q: Can I use P3403UALTP in existing designs originally specified for P3403UATP? A: Yes. The identical electrical and mechanical parameters ensure direct substitution without circuit redesign or PCB layout modification.

Q: Are there any packaging differences between these parts? A: No. Both parts use the same 6-SMD, Gull Wing surface mount package and Modified MS-013 supplier device package configuration.

Q: What is the moisture sensitivity rating for these parts? A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or assembly.