P1504UBRP Equivalent & Substitute Parts

Part Overview

The P1504UBRP is a TVS thyristor from Littelfuse Inc.'s SIDACtor® series, designed for transient voltage suppression applications. This component features 140V/280V off-state voltage ratings with 250A peak pulse current capability in a 6-SMD gull wing surface mount package. The part is currently listed as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity.

Substiute Parts

P1504UBRP

Littelfuse Inc.In Stock: 1056P1504UBRP Datasheet

Current PartRFQ

P1504UBLRP

LittelfuseIn Stock: 778P1504UBLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P1504UBRP is determined by matching the following critical electrical and mechanical parameters:

• Voltage ratings (breakover and off-state): 180V/360V and 140V/280V respectively
• Peak pulse current capability: 250A at 8/20µs pulse width
• Hold current: 150 mA minimum
• Number of elements: 4-element configuration
• Capacitance range: 55pF to 95pF
• Package type: 6-SMD gull wing surface mount
• On-state voltage: 4V nominal

The P1504UBLRP meets all these electrical and mechanical requirements, establishing it as a direct functional equivalent. The primary distinction between these parts is packaging format and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

The P1504UBLRP is the direct substitute for the P1504UBRP. Both components share identical electrical specifications and mechanical form factors. The P1504UBLRP is currently in active production status, whereas the P1504UBRP is obsolete.

Key selection factors:

• The P1504UBLRP is supplied in Tape & Reel format, suitable for automated assembly processes, while the P1504UBRP was supplied in bulk packaging.
• The P1504UBLRP is ROHS3 compliant, meeting current environmental regulations. The P1504UBRP is RoHS non-compliant.
• Both parts carry the same ECCN and HTSUS classifications.
• Electrical performance is identical across all specified parameters.

For new designs or production continuity, the P1504UBLRP is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can P1504UBLRP be used as a direct replacement for P1504UBRP in existing designs?

A: Yes. The P1504UBLRP is electrically and mechanically identical to the P1504UBRP. All voltage ratings, current ratings, capacitance values, and package dimensions are equivalent. The primary differences are product lifecycle status and packaging format.

Q: What is the difference between bulk and Tape & Reel packaging?

A: Bulk packaging (P1504UBRP) is suitable for manual handling and small-volume applications. Tape & Reel packaging (P1504UBLRP) is designed for automated pick-and-place assembly equipment, offering improved efficiency in high-volume production environments.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical or thermal performance. The ROHS3 compliance of the P1504UBLRP indicates adherence to current environmental standards.

Q: Are there any pin or footprint differences between these parts?

A: No. Both parts use the 6-SMD gull wing package with Modified MS-013 supplier device package designation. PCB footprints are identical.

Q: Why is the P1504UBRP listed as obsolete?

A: Product obsolescence typically reflects end-of-life decisions by manufacturers. The P1504UBLRP remains in active production and provides full functional equivalence.