P1553UBTP Equivalent & Substitute Parts

Part Overview

The P1553UBTP is a 130V off-state TVS thyristor from Littelfuse Inc.'s SIDACtor® series, designed for transient voltage suppression applications. This component features a 6-SMD gull wing package with a peak pulse current rating of 250 A (8/20µs) and is currently classified as obsolete. Due to its obsolete status, identifying functionally equivalent active alternatives is necessary for ongoing design support and procurement continuity.

Substiute Parts

P1553UBTP

Littelfuse Inc.In Stock: 909P1553UBTP Datasheet

Current PartRFQ

P1553UBLTP

Littelfuse Inc.In Stock: 878P1553UBLTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P1553UBTP is determined by matching the following critical parameters:

• Voltage - Off State: 130V
• Voltage - Breakover: 180V
• Voltage - On State: 8V
• Current - Peak Pulse (8/20µs): 250A
• Current - Peak Pulse (10/1000µs): 80A
• Current - Hold (Ih): 150mA
• Number of Elements: 3
• Package / Case: 6-SMD, Gull Wing
• Mounting Type: Surface Mount

The P1553UBLTP meets all electrical and mechanical parameters required for direct substitution. The primary difference is packaging format (tube versus bulk) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The P1553UBLTP is the direct functional equivalent of the P1553UBTP. All electrical characteristics and mechanical specifications are identical. Selection between these parts should be based on the following factors:

• Product Status: The P1553UBLTP is active and supported by the manufacturer, whereas the P1553UBTP is obsolete. For new designs or ongoing production, the P1553UBLTP is the appropriate choice.
• Regulatory Compliance: The P1553UBLTP meets ROHS3 compliance requirements, while the P1553UBTP does not. Applications subject to RoHS regulations require the P1553UBLTP.
• Packaging: The P1553UBLTP is supplied in tube packaging, whereas the P1553UBTP is supplied in bulk. Packaging selection depends on assembly process requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can the P1553UBLTP directly replace the P1553UBTP in existing designs?

A: Yes. The P1553UBLTP is electrically and mechanically identical to the P1553UBTP. All voltage ratings, current ratings, and package specifications match exactly. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary differences are product status (active versus obsolete), RoHS compliance (ROHS3 compliant versus non-compliant), and packaging format (tube versus bulk). The electrical and mechanical specifications are identical.

Q: Why is the P1553UBTP listed as obsolete?

A: Littelfuse Inc. has discontinued the P1553UBTP in bulk packaging format. The P1553UBLTP in tube packaging remains the active product offering for this electrical specification.

Q: Are there any compatibility concerns when switching from P1553UBTP to P1553UBLTP?

A: No compatibility concerns exist. The 6-SMD gull wing package, pin configuration, and all electrical parameters are identical. Assembly equipment and PCB layouts require no modification.

Q: Does the tube packaging of the P1553UBLTP affect performance?

A: No. Packaging format does not affect electrical performance or reliability. Tube packaging is a supply and handling format only.