P1804UBTP Equivalent & Substitute Parts

Part Overview

The P1804UBTP is a SIDACtor® Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc., designed for transient overvoltage protection in surface mount applications. This component features a 6-SMD Gull Wing package with 170V/340V off-state voltage ratings and 250A peak pulse current capability. The P1804UBTP is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

P1804UBTP

Littelfuse Inc.In Stock: 1195P1804UBTP Datasheet

Current PartRFQ

P1804UBLTP

Littelfuse Inc.In Stock: 1032P1804UBLTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P1804UBTP is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage ratings (Breakover, Off-State, and On-State)
• Peak pulse current specifications (8/20µs and 10/1000µs)
• Hold current (Ih)
• Number of internal elements
• Capacitance range
• Physical package type and mounting configuration
• Supplier device package designation

The P1804UBLTP qualifies as a direct substitute based on identical electrical performance across all specified parameters and compatible mechanical packaging.

Parameter Comparison

Engineering Selection Recommendations

The P1804UBLTP is the direct substitute for the obsolete P1804UBTP. Both components share identical electrical specifications and mechanical packaging, ensuring functional equivalence in circuit applications.

The primary distinction between these parts is product status and regulatory compliance. The P1804UBTP is obsolete and RoHS non-compliant, while the P1804UBLTP is active and ROHS3 compliant. For new designs and ongoing system support, the P1804UBLTP is the appropriate selection. The P1804UBLTP also carries REACH Unaffected status, providing additional regulatory clarity for international applications.

Both components maintain identical moisture sensitivity levels and are suitable for surface mount assembly processes without additional handling modifications.

Frequently Asked Questions (FAQ)

Q: Can the P1804UBLTP replace the P1804UBTP in existing designs?

A: Yes. The P1804UBLTP is electrically and mechanically equivalent to the P1804UBTP across all specified parameters, including voltage ratings, peak pulse currents, hold current, element count, and capacitance values. Both use identical 6-SMD Gull Wing packaging.

Q: What is the difference between these two parts?

A: The P1804UBTP is obsolete and RoHS non-compliant, while the P1804UBLTP is an active product with ROHS3 compliance. Electrical performance and physical packaging are identical.

Q: Are there packaging differences between P1804UBTP and P1804UBLTP?

A: The P1804UBTP is supplied without specified packaging, while the P1804UBLTP is supplied in tube packaging. Both components use the same 6-SMD Gull Wing case and Modified MS-013 supplier device package. Tube packaging does not affect electrical or mechanical compatibility.

Q: Is the P1804UBLTP suitable for new product designs?

A: Yes. The P1804UBLTP is an active product with current manufacturing support and ROHS3 compliance, making it the appropriate choice for new designs requiring SIDACtor® TVS thyristor protection with these electrical specifications.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching voltage ratings (220V/440V breakover, 170V/340V off-state, 4V on-state), peak pulse current (250A at 8/20µs, 80A at 10/1000µs), hold current (150mA), element count (4), capacitance range (50pF/90pF), and package type (6-SMD Gull Wing, Modified MS-013).