P1800SCRP Equivalent & Substitute Parts

Part Overview

The P1800SCRP is a 170V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA (SMB) surface mount package. 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

P1800SCRP

Littelfuse Inc.In Stock: 2311P1800SCRP Datasheet

Current PartRFQ

P1800SCLRP

Littelfuse Inc.In Stock: 41745P1800SCLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The P1800SCLRP qualifies as a direct substitute for the P1800SCRP based on identical electrical and mechanical parameters. Substitution is determined by the following criteria:

• Voltage ratings (breakover, off-state, and on-state) must match exactly
• Peak pulse current ratings (both 8/20µs and 10/1000µs) must match exactly
• Hold current (Ih) must match exactly
• Capacitance must match exactly
• Package type (DO-214AA, SMB) must be identical
• Mounting type (Surface Mount) must be identical
• Number of elements must be identical

The P1800SCLRP meets all these criteria and is the direct equivalent part.

Parameter Comparison

Engineering Selection Recommendations

The P1800SCLRP is the direct functional equivalent of the P1800SCRP. Selection of the P1800SCLRP is supported by the following factors:

• Identical electrical performance across all specified voltage and current parameters
• Identical mechanical compatibility with existing PCB layouts and assembly processes
• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance of the P1800SCLRP meets current regulatory requirements, whereas the P1800SCRP is non-compliant
• Both parts are manufactured by Littelfuse Inc. within the same SIDACtor® series

For new designs and production runs, the P1800SCLRP should be specified. For field replacements of systems using the P1800SCRP, the P1800SCLRP provides electrical and mechanical interchangeability.

Frequently Asked Questions (FAQ)

Q: Can the P1800SCLRP be used as a direct replacement for the P1800SCRP in existing designs?

A: Yes. The P1800SCLRP is electrically and mechanically identical to the P1800SCRP. All voltage ratings, current ratings, capacitance, and package specifications match exactly. PCB layouts and assembly processes require no modification.

Q: What is the primary difference between these two parts?

A: The P1800SCRP is obsolete, while the P1800SCLRP is active. Additionally, the P1800SCLRP is ROHS3 compliant, whereas the P1800SCRP is non-compliant. The packaging differs: P1800SCRP is supplied in bulk, while P1800SCLRP is supplied in Tape & Reel format.

Q: Are there any electrical performance differences between the P1800SCRP and P1800SCLRP?

A: No. Both parts have identical electrical specifications: 220V breakover voltage, 170V off-state voltage, 4V on-state voltage, 400A peak pulse current (8/20µs), 100A peak pulse current (10/1000µs), 150mA hold current, and 90pF capacitance.

Q: Is the DO-214AA package compatible with existing assembly equipment?

A: Yes. Both parts use the DO-214AA (SMB) surface mount package, which is a standard package type compatible with conventional SMT assembly processes and equipment.

Q: Why should I transition from P1800SCRP to P1800SCLRP?

A: The P1800SCRP is obsolete and will not be available for future production. The P1800SCLRP provides identical functionality with the added benefit of ROHS3 compliance and active product status, ensuring long-term supply availability.