P1806UCTP Equivalent & Substitute Parts

Part Overview

The P1806UCTP is a 150V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series. This component is designed for transient voltage suppression applications requiring high current handling in a compact 6-SMD gull wing surface mount package. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

P1806UCTP

Littelfuse Inc.In Stock: 1120P1806UCTP Datasheet

Current PartRFQ

P1806UCLTP

LittelfuseIn Stock: 1093P1806UCLTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P1806UCTP is determined by strict equivalence across the following critical parameters:

• Voltage ratings (breakover, off-state, and on-state)
• Peak pulse current specifications (both 8/20µs and 10/1000µs waveforms)
• Hold current (Ih)
• Number of elements (6-element configuration)
• Capacitance range (55pF to 85pF)
• Package type (6-SMD, gull wing)
• Mounting configuration (surface mount)

The P1806UCLTP meets all these criteria and is classified as a direct equivalent substitute. The primary distinction between the main part and its substitute is product status and packaging format, not electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

The P1806UCLTP is the direct functional equivalent to the P1806UCTP. Both components share identical electrical specifications and mechanical packaging, ensuring pin-for-pin and functional compatibility in circuit applications.

Selection between these parts should be based on:

• Product availability: The P1806UCTP is obsolete; the P1806UCLTP is active and currently in production.
• Regulatory compliance: The P1806UCLTP meets ROHS3 compliance requirements, while the P1806UCTP does not.
• Supply chain requirements: The P1806UCLTP is supplied in tube packaging, which may align with automated assembly processes.

For new designs or system replacements, the P1806UCLTP is the appropriate selection due to its active product status and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the P1806UCLTP be used as a direct replacement for the P1806UCTP?

A: Yes. The P1806UCLTP is electrically and mechanically identical to the P1806UCTP. All voltage ratings, current specifications, and package dimensions are equivalent. The components are pin-for-pin compatible.

Q: What is the primary reason to substitute the P1806UCTP?

A: The P1806UCTP is obsolete and no longer manufactured. The P1806UCLTP is the active equivalent part from the same manufacturer and series.

Q: Are there any compliance differences between these parts?

A: Yes. The P1806UCLTP is ROHS3 compliant, while the P1806UCTP is not. If regulatory compliance is a requirement, the P1806UCLTP must be used.

Q: Do these parts have the same package specifications?

A: Yes. Both parts use a 6-SMD gull wing surface mount package based on the Modified MS-013 supplier device package. They are suitable for identical PCB layouts and assembly processes.

Q: What is the difference in packaging format?

A: The P1806UCLTP is supplied in tube packaging, which is standard for automated pick-and-place assembly. The P1806UCTP packaging format is not specified in the available data.

Q: Are the electrical characteristics identical?

A: Yes. Both parts have identical voltage ratings (210V breakover, 150V off-state, 8V on-state), peak pulse currents (400A at 8/20µs, 100A at 10/1000µs), hold current (150mA), and capacitance specifications (55pF to 85pF).