P1100SA Equivalent & Substitute Parts

Part Overview

The P1100SA is a 90V off-state, 150A peak pulse (8/20µs) TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA (SMB) surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The part operates with a 130V breakover voltage and 4V on-state voltage, designed for transient voltage suppression applications requiring fast response and high current handling.

Substiute Parts

P1100SA

Littelfuse Inc.In Stock: 10229P1100SA Datasheet

Current PartRFQ

P1100SALRP

Littelfuse Inc.In Stock: 4335P1100SALRP Datasheet

DirectRFQ

SMP100LC-90

STMicroelectronicsIn Stock: 1946SMP100LC-90 Datasheet

MFR RecommendedRFQ

SMTPA100

STMicroelectronicsIn Stock: 2380SMTPA100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P1100SA is determined by the following critical parameters: off-state voltage rating, peak pulse current capability, package type, and mounting configuration. All substitute parts must maintain the DO-214AA (SMB) surface mount package and operate within compatible voltage and current specifications.

The substitute parts are grouped into two categories:

Direct Equivalent (Same Manufacturer): P1100SALRP maintains identical electrical specifications to the P1100SA but differs in packaging format (Tape & Reel) and product status (Active vs. Obsolete).

Cross-Manufacturer Alternatives: SMP100LC-90 and SMTPA100 from STMicroelectronics provide functional equivalence with variations in peak pulse current ratings and off-state voltage, requiring circuit-level evaluation for compatibility.

Parameter Comparison

Engineering Selection Recommendations

P1100SALRP is the primary substitute for the P1100SA. It is manufactured by Littelfuse Inc. in the same SIDACtor® series with identical electrical specifications. The part is currently in active production status and ROHS3 compliant, addressing the obsolescence and compliance limitations of the original P1100SA. The only difference is packaging format (Tape & Reel vs. standard packaging), which does not affect electrical performance.

SMP100LC-90 from STMicroelectronics offers higher peak pulse current capability (400A vs. 150A at 8/20µs), making it suitable for applications requiring greater transient current handling. The 90V off-state voltage matches the P1100SA. This part is ROHS3 compliant and in active production. The increased capacitance (80pF vs. 50pF) and higher current ratings must be evaluated for circuit compatibility.

SMTPA100 from STMicroelectronics maintains the 150A peak pulse current rating of the P1100SA but operates at 100V off-state voltage instead of 90V. This part is ROHS3 compliant and in active production. The 10V voltage difference and lower capacitance (35pF vs. 50pF) require circuit-level verification for compatibility.

All substitute parts maintain the DO-214AA (SMB) surface mount package and are suitable for direct PCB footprint replacement.

Frequently Asked Questions (FAQ)

Q: Can P1100SALRP be used as a direct replacement for P1100SA?

A: Yes. P1100SALRP is electrically identical to P1100SA with matching voltage ratings (90V off-state, 130V breakover), current specifications (150A peak pulse at 8/20µs), and package type (DO-214AA, SMB). The difference is packaging format (Tape & Reel) and active product status. No circuit modifications are required.

Q: What are the key differences between SMP100LC-90 and P1100SA?

A: SMP100LC-90 has a higher peak pulse current rating (400A vs. 150A at 8/20µs) and higher capacitance (80pF vs. 50pF). The off-state voltage is identical (90V). These differences may affect circuit behavior in transient suppression applications and require evaluation based on specific circuit requirements.

Q: Is SMTPA100 compatible with P1100SA applications?

A: SMTPA100 maintains the 150A peak pulse current rating but operates at 100V off-state voltage compared to P1100SA's 90V. The 10V difference and lower capacitance (35pF vs. 50pF) require circuit-level analysis to determine compatibility. This part is suitable only if the application can tolerate the higher voltage threshold.

Q: Are all substitute parts RoHS compliant?

A: P1100SALRP, SMP100LC-90, and SMTPA100 are all ROHS3 compliant. The original P1100SA is RoHS non-compliant. For applications requiring RoHS compliance, any of the three substitute parts are acceptable from a regulatory standpoint.

Q: Do all substitute parts use the same package?

A: Yes. All substitute parts (P1100SALRP, SMP100LC-90, SMTPA100) use the DO-214AA (SMB) surface mount package, enabling direct PCB footprint replacement without layout modifications.