P0900SD Equivalent & Substitute Parts

Part Overview

The P0900SD is a 75V off-state, 1 kA peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, packaged in DO-214AA (SMB) surface mount configuration. This component is designed for transient voltage suppression applications requiring high current handling capability in a compact form factor. The P0900SD is currently classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

P0900SD

Littelfuse Inc.In Stock: 942P0900SD Datasheet

Current PartRFQ

P0900SDLRP

Littelfuse Inc.In Stock: 3738P0900SDLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P0900SD is determined by strict equivalence across all electrical and mechanical parameters. The substitute part P0900SDLRP maintains identical electrical specifications:

• Voltage ratings (off-state, breakover, and on-state)
• Peak pulse current handling (8/20µs and 10/1000µs waveforms)
• Hold current threshold
• Capacitance characteristics
• Package and mounting configuration (DO-214AA, SMB surface mount)
• Single-element configuration

The primary distinction between P0900SD and P0900SDLRP is packaging format (bulk versus tape & reel) and product status (obsolete versus active). Both parts share the identical base product number P0900 and are manufactured by Littelfuse Inc. within the SIDACtor® series.

Parameter Comparison

Engineering Selection Recommendations

The P0900SDLRP is the direct active equivalent for the obsolete P0900SD. Selection of P0900SDLRP is supported by:

• Identical electrical performance across all specified parameters
• Active product status ensuring ongoing availability and manufacturing support
• ROHS3 compliance, meeting current environmental and regulatory requirements
• REACH compliance documentation for supply chain transparency
• Tape & reel packaging suitable for automated assembly processes
• Maintained by the original manufacturer (Littelfuse Inc.) within the same SIDACtor® product line

For applications currently using P0900SD, transition to P0900SDLRP requires no circuit redesign or performance re-qualification, as all electrical and mechanical characteristics remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can P0900SDLRP be used as a direct replacement for P0900SD in existing designs?

A: Yes. P0900SDLRP is electrically and mechanically identical to P0900SD. All voltage ratings, current specifications, capacitance, and package dimensions are equivalent. No circuit modifications are required.

Q: What is the difference between P0900SD and P0900SDLRP?

A: The primary differences are packaging format (bulk versus tape & reel) and product status (obsolete versus active). P0900SDLRP includes ROHS3 compliance and REACH documentation, while P0900SD does not. Electrical performance is identical.

Q: Why is P0900SD listed as obsolete?

A: P0900SD has been discontinued by Littelfuse Inc. P0900SDLRP is the active equivalent and recommended for new designs and ongoing procurement.

Q: Is the DO-214AA package compatible with existing PCB layouts designed for P0900SD?

A: Yes. Both P0900SD and P0900SDLRP use the DO-214AA (SMB) surface mount package with identical footprints and pinouts. No PCB redesign is necessary.

Q: What are the compliance differences between these parts?

A: P0900SDLRP is ROHS3 compliant and REACH affected, meeting current environmental regulations. P0900SD is RoHS non-compliant and predates current regulatory requirements. For new designs and regulated applications, P0900SDLRP is the appropriate choice.

Q: Are there inventory considerations when transitioning from P0900SD to P0900SDLRP?

A: P0900SDLRP is available in tape & reel packaging for automated assembly. If bulk quantities are required, confirm packaging options with your supplier. P0900SDLRP has higher current inventory availability (3700 pcs) compared to P0900SD (922 pcs).