P0904UATP Equivalent & Substitute Parts

Part Overview

The P0904UATP is a SIDACtor® Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc., designed for overvoltage protection in surface mount applications. This component features a 6-SMD Gull Wing package with dual voltage ratings (75V/175V off-state) and a peak pulse current capability of 150 A at 8/20µs pulse width.

The P0904UATP is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this TVS thyristor technology.

Substiute Parts

P0904UATP

Littelfuse Inc.In Stock: 890P0904UATP Datasheet

Current PartRFQ

P0904UALTP

Littelfuse Inc.In Stock: 1088P0904UALTP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P0904UATP 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 values
• Package type and form factor (6-SMD, Gull Wing)
• Mounting configuration (Surface Mount)
• Supplier device package designation

Parts meeting all these criteria are classified as direct equivalents and may be substituted without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

The P0904UALTP is the direct equivalent substitute for the obsolete P0904UATP. Both parts are manufactured by Littelfuse Inc. and share identical electrical and mechanical specifications across all critical parameters.

The P0904UALTP offers the advantage of active product status, ensuring continued availability and supply chain support. Additionally, the P0904UALTP meets ROHS3 compliance requirements, whereas the P0904UATP is non-compliant. For new designs or production transitions, the P0904UALTP is the appropriate selection.

Both parts maintain identical Moisture Sensitivity Level (MSL) classification of 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can the P0904UALTP be used as a direct replacement for the P0904UATP?

A: Yes. The P0904UALTP is a direct equivalent. All electrical parameters (voltage ratings, current specifications, hold current) and mechanical specifications (package type, form factor, mounting configuration) are identical. No circuit redesign or board layout modification is required.

Q: What is the primary difference between these two parts?

A: The P0904UATP is obsolete, while the P0904UALTP is active. The P0904UALTP also meets ROHS3 compliance, whereas the P0904UATP does not. Functionally and electrically, both parts are equivalent.

Q: Are there any packaging differences between P0904UATP and P0904UALTP?

A: Both parts use the same 6-SMD Gull Wing package with Modified MS-013 supplier device package designation. The P0904UALTP is supplied in Tube packaging, while the P0904UATP packaging specification was not provided. This does not affect electrical or mechanical compatibility.

Q: What parameters determine substitution eligibility for this TVS thyristor?

A: Substitution is determined by equivalence in voltage ratings (Breakover, Off-State, On-State), peak pulse current specifications, hold current, number of elements, capacitance values, package type, and mounting configuration. All these parameters must match for direct substitution.

Q: Is moisture sensitivity a concern when substituting these parts?

A: No. Both parts carry MSL classification 1 (Unlimited), indicating no special moisture handling requirements during storage, handling, or assembly processes.