P3500EARP2 Equivalent & Substitute Parts

Part Overview

The P3500EARP2 is a 320V 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 through-hole mounting in TO-226-2 and TO-92-2 package configurations. The P3500EARP2 is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system support, maintenance, and new design implementations where this component specification remains required.

Substiute Parts

P3500EARP2

Littelfuse Inc.In Stock: 758P3500EARP2 Datasheet

Current PartRFQ

P3500EALRP2

Littelfuse Inc.In Stock: 1045P3500EALRP2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3500EARP2 is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage ratings: Breakover voltage (400V), off-state voltage (320V), and on-state voltage (4V)
• Current specifications: Peak pulse current at 8/20µs (150A) and 10/1000µs (45A), hold current (150mA)
• Capacitance: 35pF
• Package configuration: TO-226-2 and TO-92-2 (TO-226AC) with formed leads
• Mounting type: Through hole
• Series classification: SIDACtor®
• Number of elements: Single element

The P3500EALRP2 meets all these criteria and is therefore a direct electrical and mechanical equivalent. The primary distinction between these parts is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The P3500EALRP2 is the direct substitute for the obsolete P3500EARP2. Both components share identical electrical specifications and package configurations, ensuring functional compatibility in all applications where the P3500EARP2 was originally specified.

Selection between these parts is determined by supply chain and regulatory requirements:

• P3500EALRP2 is the preferred selection for new designs and ongoing production. This part carries active product status, ROHS3 compliance, and REACH unaffected certification, meeting current regulatory standards. Tape & Reel packaging is suitable for automated assembly processes.

• P3500EARP2 is available only through legacy inventory channels. RoHS non-compliance and obsolete status restrict its use to maintenance and repair of existing systems where component replacement must match original specifications exactly.

Both parts maintain identical electrical performance, hold current characteristics, and thermal properties. Substitution introduces no functional risk when electrical parameters and package configuration requirements are met.

Frequently Asked Questions (FAQ)

Q: Can P3500EALRP2 replace P3500EARP2 in existing designs?

A: Yes. The P3500EALRP2 is electrically and mechanically equivalent to the P3500EARP2. All voltage ratings, current specifications, capacitance, and package configurations are identical. Direct substitution is valid for all applications.

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

A: The primary differences are product status, packaging format, and regulatory compliance. The P3500EARP2 is obsolete and supplied in bulk packaging with RoHS non-compliance. The P3500EALRP2 is active, supplied in Tape & Reel format, and ROHS3 compliant.

Q: Are the TO-226-2 and TO-92-2 packages interchangeable?

A: Both packages are supported by these part numbers. The TO-226-2 and TO-92-2 (TO-226AC) configurations with formed leads are mechanically and electrically equivalent for through-hole mounting applications. Verify your PCB footprint design accommodates the specific package variant selected.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel and bulk packaging formats do not affect component electrical characteristics. Packaging selection is determined by assembly process requirements and supply chain logistics.

Q: What regulatory compliance should I consider for new designs?

A: The P3500EALRP2 meets ROHS3 compliance and REACH unaffected status, making it suitable for applications subject to current environmental and hazardous substance regulations. Verify compliance requirements for your specific application and region.