P1806UATP Equivalent & Substitute Parts

Part Overview

The P1806UATP is a 150V 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 high current handling in a compact 6-SMD, gull wing surface mount package. The part is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

P1806UATP

Littelfuse Inc.In Stock: 687P1806UATP Datasheet

Current PartRFQ

P1806UALTP

Littelfuse Inc.In Stock: 877P1806UALTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P1806UATP is determined by electrical and mechanical parameter equivalence. The critical parameters defining substitutability are:

• Voltage ratings (breakover, off-state, and on-state)
• Peak pulse current handling (both 8/20µs and 10/1000µs waveforms)
• Hold current specification
• Number of internal elements
• Capacitance range
• Physical package configuration (6-SMD, gull wing)
• Mounting type (surface mount)

The P1806UALTP meets all these criteria with identical electrical specifications and package geometry, differing only in packaging format (tube versus unspecified original packaging) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The P1806UALTP is a direct electrical and mechanical equivalent to the P1806UATP. Both components share identical voltage ratings, current specifications, element count, and package configuration. The primary distinction is product status: P1806UALTP is active and available, while P1806UATP is obsolete.

For new designs and ongoing system support, P1806UALTP is the appropriate selection. This part offers the additional advantage of ROHS3 compliance, whereas the original P1806UATP is RoHS non-compliant. Both components maintain identical moisture sensitivity levels and export classifications.

Frequently Asked Questions (FAQ)

Q: Can P1806UALTP be used as a direct replacement for P1806UATP?

A: Yes. Both parts are electrically and mechanically identical, with matching voltage ratings (210V breakover, 150V off-state, 8V on-state), peak pulse current specifications (150A at 8/20µs, 45A at 10/1000µs), and 6-SMD gull wing package configuration. The primary difference is product status and RoHS compliance.

Q: What are the key electrical parameters that define substitutability?

A: Substitutability is determined by voltage ratings (breakover, off-state, on-state), peak pulse current handling across specified waveforms, hold current, element count, and capacitance range. P1806UALTP matches all these parameters.

Q: Are there packaging differences between these parts?

A: Both parts use identical 6-SMD, gull wing surface mount packages with Modified MS-013 supplier device packaging. The P1806UALTP is supplied in tube packaging format.

Q: What is the significance of the RoHS compliance difference?

A: P1806UALTP is ROHS3 compliant, while P1806UATP is RoHS non-compliant. For applications subject to RoHS regulations, P1806UALTP is the required selection.

Q: Are moisture sensitivity levels the same?

A: Yes. Both components have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.