P1553UARP Equivalent & Substitute Parts

Part Overview

The P1553UARP is a 130V 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 capability in a 6-SMD gull wing surface mount package. The part is currently obsolete, making identification of suitable substitutes necessary for ongoing system support and new design implementations.

Substiute Parts

P1553UARP

Littelfuse Inc.In Stock: 763P1553UARP Datasheet

Current PartRFQ

P1553UALRP

LittelfuseIn Stock: 970P1553UALRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P1553UARP is determined by electrical and mechanical parameter equivalence. The critical parameters defining substitutability are:

• Voltage ratings (breakover, off-state, and on-state)
• Current handling specifications (peak pulse at 8/20µs and 10/1000µs intervals, hold current)
• Element count and capacitance values
• Physical package configuration (6-SMD gull wing)
• Surface mount compatibility

The P1553UALRP meets all these criteria with identical electrical specifications and package geometry, differing only in packaging format (tape & reel versus bulk) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The P1553UALRP is the direct functional equivalent of the P1553UARP. Both components share identical electrical characteristics and physical package specifications. The primary distinction is product lifecycle status: P1553UARP is obsolete while P1553UALRP is active production.

For new designs and ongoing system support, P1553UALRP is the appropriate selection. This part offers the advantage of active manufacturer support and ROHS3 compliance, whereas the original P1553UARP is non-compliant with current RoHS standards. The packaging difference (tape & reel for P1553UALRP versus bulk for P1553UARP) does not affect electrical performance or board-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can P1553UALRP be used as a direct replacement for P1553UARP in existing designs?

A: Yes. The P1553UALRP provides identical electrical performance and physical package compatibility. No circuit modifications are required.

Q: What is the difference between P1553UARP and P1553UALRP?

A: The components are electrically and mechanically identical. P1553UARP is supplied in bulk packaging and is obsolete. P1553UALRP is supplied in tape & reel format and is in active production with ROHS3 compliance.

Q: Does the tape & reel packaging of P1553UALRP affect board assembly?

A: No. Tape & reel packaging is standard for automated surface mount assembly. The component itself is identical to the bulk-packaged version.

Q: Is P1553UALRP RoHS compliant?

A: Yes. P1553UALRP is ROHS3 compliant. The original P1553UARP is not RoHS compliant.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts have identical voltage ratings, current specifications, capacitance values, and thermal characteristics.