P1100SC Equivalent & Substitute Parts

Part Overview

The P1100SC is a 90V off-state TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA (SMB) surface mount package. This component is designed for transient voltage suppression applications requiring 400 A peak pulse current capability. The P1100SC is currently classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

P1100SC

Littelfuse Inc.In Stock: 17633P1100SC Datasheet

Current PartRFQ

P1100SCLRP

Littelfuse Inc.In Stock: 2762P1100SCLRP Datasheet

DirectRFQ

SMP100LC-140

STMicroelectronicsIn Stock: 4249SMP100LC-140 Datasheet

MFR RecommendedRFQ

SMP100LC-90

STMicroelectronicsIn Stock: 1946SMP100LC-90 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P1100SC is determined by matching the following critical electrical and mechanical parameters:

• Off-State Voltage: 90V (primary selection criterion)
• Peak Pulse Current (8/20µs): 400A (current handling requirement)
• Package / Case: DO-214AA, SMB (mechanical and thermal compatibility)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Number of Elements: 1 (functional equivalence)

Substitute parts are grouped into two categories:

Direct Equivalent (Same Off-State Voltage): Parts maintaining 90V off-state voltage with identical current ratings and package specifications.

Voltage-Rated Alternative (Higher Off-State Voltage): Parts with elevated off-state voltage ratings (140V) that provide enhanced transient suppression capability while maintaining the same package and current specifications. These are suitable for applications where higher voltage margin is acceptable.

Parameter Comparison

Engineering Selection Recommendations

P1100SCLRP is the primary direct equivalent substitute. This part maintains identical electrical specifications (90V off-state voltage, 400A peak pulse current, 150mA hold current) and package configuration. The P1100SCLRP is manufactured by Littelfuse Inc. in the same SIDACtor® series and carries Active product status with ROHS3 compliance, addressing the obsolescence and regulatory requirements of the original P1100SC.

SMP100LC-90 provides an alternative direct equivalent from STMicroelectronics. This part matches the 90V off-state voltage and 400A peak pulse current specifications in the same DO-214AA package. The SMP100LC-90 is Active and ROHS3 compliant. Capacitance is specified at 80pF compared to 115pF in the P1100SC, which may affect high-frequency circuit behavior.

SMP100LC-140 is suitable for applications where higher voltage margin is required. This part increases the off-state voltage to 140V while maintaining the 400A peak pulse current and DO-214AA package. The SMP100LC-140 is Active and ROHS3 compliant. The reduced capacitance (65pF) provides improved high-frequency performance. Selection of this part requires confirmation that the elevated voltage rating is compatible with circuit design parameters.

Frequently Asked Questions (FAQ)

Q: Can P1100SCLRP be used as a direct replacement for P1100SC?

A: Yes. P1100SCLRP is a direct equivalent with identical off-state voltage (90V), peak pulse current (400A), hold current (150mA), and package configuration (DO-214AA, SMB). Both are manufactured by Littelfuse Inc. in the SIDACtor® series. P1100SCLRP is Active and ROHS3 compliant, addressing the obsolescence status of P1100SC.

Q: What is the difference between the 90V and 140V rated parts?

A: The primary difference is off-state voltage rating. P1100SC and P1100SCLRP are rated at 90V off-state, while SMP100LC-140 is rated at 140V off-state. Both maintain 400A peak pulse current and DO-214AA packaging. The 140V part provides higher transient suppression margin but requires verification that the elevated voltage rating is acceptable for the application circuit.

Q: Are there differences in capacitance between substitute parts?

A: Yes. P1100SC and P1100SCLRP specify 115pF capacitance. SMP100LC-90 specifies 80pF, and SMP100LC-140 specifies 65pF. Lower capacitance may improve high-frequency circuit performance but should be evaluated against specific application requirements.

Q: Are all substitute parts RoHS compliant?

A: P1100SCLRP, SMP100LC-90, and SMP100LC-140 are all ROHS3 compliant. The original P1100SC is RoHS non-compliant. Selection of any substitute part addresses RoHS compliance requirements.

Q: Can SMP100LC-90 and SMP100LC-140 be used interchangeably?

A: No. While both are STMicroelectronics TRISIL™ series parts in DO-214AA packaging with 400A peak pulse current, they differ in off-state voltage (90V vs. 140V) and capacitance (80pF vs. 65pF). Selection must be based on specific circuit voltage requirements and frequency response characteristics.

Q: What packaging options are available for substitute parts?

A: P1100SCLRP is available in Cut Tape (CT) and Digi-Reel® packaging. SMP100LC-90 is available in Tape & Reel (TR) packaging. SMP100LC-140 is available in Cut Tape (CT) and Digi-Reel® packaging. All maintain the same DO-214AA component package.