P3403UARP Equivalent & Substitute Parts

Part Overview

The P3403UARP is a 300V off-state, 150A peak pulse TVS thyristor manufactured by Littelfuse 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

P3403UARP

LittelfuseIn Stock: 1071P3403UARP Datasheet

Current PartRFQ

P3403UALRP

Littelfuse Inc.In Stock: 779P3403UALRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3403UARP is determined by matching the following critical electrical and mechanical parameters:

• Voltage ratings: Breakover voltage of 400V, off-state voltage of 300V, and on-state voltage of 8V
• Current specifications: Peak pulse current of 150A (8/20µs) and 45A (10/1000µs), with hold current of 150mA
• Element configuration: 3-element design
• Capacitance characteristics: 45pF and 65pF values
• Package compatibility: 6-SMD gull wing surface mount configuration

The P3403UALRP meets all these criteria and is therefore a direct electrical and mechanical equivalent.

Parameter Comparison

Engineering Selection Recommendations

The P3403UALRP is the direct substitute for the obsolete P3403UARP. Both components share identical electrical characteristics and mechanical specifications. The primary distinction is product status: the P3403UALRP is active and available, while the P3403UARP is obsolete.

The P3403UALRP offers additional compliance advantages. It meets ROHS3 requirements and is REACH unaffected, whereas the P3403UARP is RoHS non-compliant. For new designs or systems requiring regulatory compliance, the P3403UALRP is the appropriate selection.

The P3403UALRP is supplied in Tape & Reel packaging, which is standard for production environments. Both components maintain identical moisture sensitivity levels (MSL 1, Unlimited) and share the same ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the P3403UALRP directly replace the P3403UARP in existing designs?

A: Yes. The P3403UALRP is electrically and mechanically identical to the P3403UARP. All voltage ratings, current specifications, element configuration, capacitance values, and package dimensions are equivalent. Direct substitution is possible without circuit modification.

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

A: The primary differences are product status and compliance certifications. The P3403UARP is obsolete, while the P3403UALRP is active. The P3403UALRP is ROHS3 compliant and REACH unaffected, whereas the P3403UARP is RoHS non-compliant. Packaging differs: P3403UALRP is supplied in Tape & Reel format.

Q: Are there any performance differences between these parts?

A: No. Both components have identical electrical performance specifications, including breakover voltage, off-state voltage, on-state voltage, peak pulse currents, hold current, and capacitance characteristics.

Q: What packaging format is the P3403UALRP supplied in?

A: The P3403UALRP is supplied in Tape & Reel (TR) packaging, which is standard for automated assembly and production environments.

Q: Does the P3403UALRP meet current regulatory requirements?

A: Yes. The P3403UALRP is ROHS3 compliant and REACH unaffected, making it suitable for applications requiring current environmental and regulatory compliance.