P1553UATP Equivalent & Substitute Parts

Part Overview

The P1553UATP is a 130V off-state, 150A peak pulse TVS thyristor manufactured by Littelfuse in the SIDACtor® series. This component is designed for transient voltage suppression applications requiring high current handling in a compact 6-SMD gull wing package. The part is currently obsolete, making identification of active equivalent components essential for ongoing system support and new design implementations.

Substiute Parts

P1553UATP

LittelfuseIn Stock: 826P1553UATP Datasheet

Current PartRFQ

P1553UALTP

Littelfuse Inc.In Stock: 1121P1553UALTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P1553UATP is determined by electrical and mechanical parameter equivalence. The following criteria establish valid substitution:

• Voltage ratings (breakover, off-state, and on-state) must match exactly
• Peak pulse current ratings for both 8/20µs and 10/1000µs pulse profiles must match
• Hold current (Ih) must match
• Number of elements must be identical
• Capacitance values must be equivalent
• Package type (6-SMD, gull wing) and mounting method (surface mount) must be identical
• Supplier device package designation must be compatible

The P1553UALTP meets all these criteria and serves as a direct electrical and mechanical equivalent to the obsolete P1553UATP.

Parameter Comparison

Engineering Selection Recommendations

The P1553UALTP is the direct substitute for the obsolete P1553UATP. All electrical parameters and mechanical specifications are identical. The primary distinction is product status: P1553UALTP is active and currently available, whereas P1553UATP is obsolete.

An additional consideration is regulatory compliance. The P1553UALTP carries ROHS3 compliance certification, whereas the P1553UATP is non-compliant. For applications subject to RoHS requirements, the P1553UALTP is the appropriate selection. Both parts maintain identical moisture sensitivity levels and export classifications.

Frequently Asked Questions (FAQ)

Q: Can P1553UALTP be used as a direct replacement for P1553UATP in existing designs?

A: Yes. The P1553UALTP is electrically and mechanically identical to the P1553UATP. All voltage ratings, current specifications, capacitance values, and package dimensions are equivalent. No circuit modifications are required.

Q: What is the difference between P1553UATP and P1553UALTP?

A: The primary differences are product status and packaging. P1553UATP is obsolete; P1553UALTP is active. P1553UALTP is supplied in tube packaging, whereas P1553UATP packaging is not specified. P1553UALTP is ROHS3 compliant; P1553UATP is not.

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

A: No. Both parts share identical electrical specifications: 180V breakover voltage, 130V off-state voltage, 8V on-state voltage, 150A peak pulse current (8/20µs), 45A peak pulse current (10/1000µs), 150mA hold current, and 60pF/95pF capacitance values.

Q: Is the 6-SMD gull wing package compatible with existing PCB layouts?

A: Yes. Both parts use the same 6-SMD gull wing package and Modified MS-013 supplier device package. PCB footprints and assembly processes remain unchanged.

Q: Does RoHS3 compliance affect electrical performance?

A: No. RoHS3 compliance is a material composition standard and does not alter electrical characteristics or performance specifications.