P1104UARP Equivalent & Substitute Parts

Part Overview

The P1104UARP is a SIDACtor® thyristor transient voltage suppressor manufactured by Littelfuse Inc., designed for overvoltage protection in surface mount applications. This component features 90V and 180V off-state voltage ratings with 150A peak pulse current capability in a 6-SMD gull wing package. The P1104UARP is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

P1104UARP

Littelfuse Inc.In Stock: 869P1104UARP Datasheet

Current PartRFQ

P1104UALRP

Littelfuse Inc.In Stock: 1138P1104UALRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The P1104UALRP qualifies as a direct substitute for the P1104UARP based on identical electrical and mechanical parameters. Substitution is valid when the following criteria are met:

• Voltage ratings match exactly: Breakover (130V, 260V), Off-State (90V, 180V), and On-State (4V)
• Peak pulse current specifications are identical: 150A (8/20µs) and 45A (10/1000µs)
• Hold current (Ih) matches at 150 mA
• Number of elements and capacitance values are identical
• Package configuration is identical: 6-SMD, Gull Wing in Modified MS-013
• Mounting type is Surface Mount

The primary distinction between these parts is product status and packaging format, not electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The P1104UALRP is the direct functional equivalent of the P1104UARP for all electrical and mechanical applications. Selection between these parts should be based on the following factors:

Product Status: The P1104UARP is obsolete, while the P1104UALRP maintains active product status with ongoing manufacturer support and availability.

Compliance Requirements: The P1104UALRP is ROHS3 compliant, whereas the P1104UARP is RoHS non-compliant. Systems requiring RoHS compliance must use the P1104UALRP.

Packaging Considerations: The P1104UALRP is supplied in Tape & Reel format, suitable for automated assembly processes. The P1104UARP is supplied in bulk packaging. Manufacturing environments utilizing pick-and-place equipment should specify the P1104UALRP.

Supply Chain: The P1104UALRP has higher current inventory availability (1119 Pcs) compared to the P1104UARP (852 Pcs), supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can the P1104UALRP directly replace the P1104UARP in existing designs?

A: Yes. All electrical parameters, voltage ratings, current specifications, and mechanical dimensions are identical. Direct substitution is valid without circuit modification.

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

A: The parts are electrically and mechanically identical. The primary differences are product status (obsolete vs. active), packaging format (bulk vs. Tape & Reel), and RoHS compliance status (non-compliant vs. ROHS3 compliant).

Q: Does the Tape & Reel packaging of the P1104UALRP affect electrical performance?

A: No. Packaging format does not affect electrical characteristics. The Tape & Reel format is a supply and handling specification only, providing advantages for automated assembly processes.

Q: Are there any compliance differences between these parts?

A: The P1104UALRP is ROHS3 compliant, while the P1104UARP is RoHS non-compliant. Systems subject to RoHS regulations must use the P1104UALRP.

Q: What is the Moisture Sensitivity Level (MSL) for these components?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Can I use the P1104UALRP in high-volume production?

A: Yes. The Tape & Reel packaging of the P1104UALRP is optimized for automated assembly, making it suitable for high-volume manufacturing environments.