P3403AARP Equivalent & Substitute Parts

Part Overview

The P3403AARP 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 three-element configuration in a 3-SIP through-hole package. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system support and component procurement.

Substiute Parts

P3403AARP

Littelfuse Inc.In Stock: 899P3403AARP Datasheet

Current PartRFQ

P3403AALRP

Littelfuse Inc.In Stock: 836P3403AALRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3403AARP is determined by electrical and mechanical parameter equivalence. The critical parameters for substitution are:

• Voltage ratings (breakover, off-state, and on-state)
• Peak pulse current capabilities (both 8/20µs and 10/1000µs waveforms)
• Hold current specification
• Number of elements (3-element configuration)
• Package type (3-SIP) and mounting method (through-hole)
• Capacitance values

The P3403AALRP meets all these criteria with identical electrical specifications and package configuration. The primary distinction is packaging format (tape & reel versus bulk) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The P3403AALRP is the direct functional equivalent of the P3403AARP. Both components share identical electrical specifications and mechanical package configuration. Selection between these parts should be based on the following factors:

Product Status: The P3403AARP is obsolete. The P3403AALRP is active and represents the current production equivalent from Littelfuse Inc.

Compliance Requirements: The P3403AALRP meets ROHS3 compliance and REACH unaffected status, whereas the P3403AARP is RoHS non-compliant. Systems requiring regulatory compliance should transition to the P3403AALRP.

Packaging Format: The P3403AARP is supplied in bulk packaging. The P3403AALRP is supplied in tape & reel format, which is standard for automated assembly processes.

Inventory Availability: Both parts maintain current stock levels (839 pcs and 817 pcs respectively), ensuring procurement feasibility.

Frequently Asked Questions (FAQ)

Q: Can the P3403AALRP directly replace the P3403AARP in existing designs?

A: Yes. The P3403AALRP is electrically and mechanically identical to the P3403AARP. Both components have the same voltage ratings, current ratings, hold current, element count, and 3-SIP through-hole package configuration. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary differences are product status (obsolete versus active), packaging format (bulk versus tape & reel), and compliance certifications (RoHS non-compliant versus ROHS3 compliant). Electrical and mechanical specifications are identical.

Q: Is the tape & reel packaging of the P3403AALRP compatible with through-hole assembly?

A: Yes. Tape & reel packaging is a standard supply format for through-hole components. The individual components are identical; only the delivery method differs. Manual or automated pick-and-place equipment can process tape & reel packaged components for through-hole mounting.

Q: Does the RoHS3 compliance of the P3403AALRP affect circuit performance?

A: No. RoHS3 compliance indicates material composition standards and does not alter electrical or thermal performance characteristics. The component functions identically in circuit applications.

Q: Are there any other Littelfuse SIDACtor® TVS thyristors that could substitute for the P3403AARP?

A: Substitution must be based on matching all critical electrical parameters: 400V breakover voltage, 300V off-state voltage, 150A peak pulse current (8/20µs), 45A peak pulse current (10/1000µs), 150mA hold current, and 3-element configuration in 3-SIP package. Only the P3403AALRP meets these specifications.