P3500SCRP Equivalent & Substitute Parts

Part Overview

The P3500SCRP is a 320V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, packaged in DO-214AA (SMB) surface mount configuration. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

P3500SCRP

Littelfuse Inc.In Stock: 17378P3500SCRP Datasheet

Current PartRFQ

P3500SCLRP

Littelfuse Inc.In Stock: 55207P3500SCLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3500SCRP is determined by electrical and mechanical parameter equivalence across the following criteria:

• Voltage ratings: Breakover voltage (400V), off-state voltage (320V), and on-state voltage (4V) must match exactly
• Current specifications: Peak pulse current at 8/20µs (400A) and 10/1000µs (100A), and hold current (150mA) must be identical
• Capacitance: 65pF specification must be maintained
• Package and mounting: DO-214AA (SMB) surface mount configuration is required for PCB compatibility
• Number of elements: Single element configuration must be preserved

The P3500SCLRP meets all these criteria and is classified as an active product with improved compliance status, making it a direct electrical and mechanical equivalent.

Parameter Comparison

Engineering Selection Recommendations

The P3500SCLRP is the direct equivalent for the obsolete P3500SCRP. All electrical parameters and mechanical specifications are identical. The P3500SCLRP offers the following advantages:

• Active product status ensures ongoing availability and manufacturing support
• ROHS3 compliance meets current regulatory requirements for new designs and production
• REACH unaffected status confirms compliance with chemical substance regulations
• Identical electrical performance maintains circuit functionality without redesign

For applications currently using P3500SCRP, transition to P3500SCLRP is a direct substitution with no circuit modifications required.

Frequently Asked Questions (FAQ)

Q: Can P3500SCLRP be used as a direct replacement for P3500SCRP in existing designs?

A: Yes. The P3500SCLRP is electrically and mechanically identical to the P3500SCRP. All voltage ratings, current specifications, capacitance, and package configuration match exactly. No circuit redesign is necessary.

Q: What is the difference between P3500SCRP and P3500SCLRP?

A: The primary differences are product status and compliance certifications. P3500SCRP is obsolete and RoHS non-compliant. P3500SCLRP is an active product with ROHS3 compliance and REACH unaffected status. Electrical and mechanical specifications are identical.

Q: Why is P3500SCRP listed as obsolete?

A: Obsolescence typically reflects manufacturer discontinuation decisions. The P3500SCLRP serves as the active replacement within the same SIDACtor® series with equivalent performance.

Q: Are there packaging differences between these parts?

A: Both parts use DO-214AA (SMB) surface mount packaging. P3500SCLRP is available in Cut Tape (CT) and Digi-Reel® packaging options, providing flexibility for different procurement and assembly requirements.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: breakover voltage (400V), off-state voltage (320V), on-state voltage (4V), peak pulse current at 8/20µs (400A), peak pulse current at 10/1000µs (100A), hold current (150mA), and capacitance (65pF). All these parameters must match for direct substitution.

Q: Is the P3500SCLRP suitable for new designs?

A: Yes. The P3500SCLRP is an active product with current compliance certifications (ROHS3, REACH unaffected), making it appropriate for new product development and manufacturing.