P1500SCMC Equivalent & Substitute Parts

Part Overview

The P1500SCMC is a 140V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA SMB package. This component is classified as obsolete, making direct replacement necessary for new designs and ongoing production requirements. The part operates with a 180V breakover voltage, 5V on-state voltage, and 150mA hold current, designed for transient voltage suppression applications requiring high peak pulse current handling.

Substiute Parts

P1500SCMC

Littelfuse Inc.In Stock: 897P1500SCMC Datasheet

Current PartRFQ

P1500SCMCLRP

Littelfuse Inc.In Stock: 1039P1500SCMCLRP Datasheet

DirectRFQ

SMP100LC-140

STMicroelectronicsIn Stock: 4249SMP100LC-140 Datasheet

MFR RecommendedRFQ

SMP100MC-140

STMicroelectronicsIn Stock: 2372SMP100MC-140 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P1500SCMC is determined by matching the following critical electrical and mechanical parameters:

• Voltage - Off State: 140V (exact match required)
• Package / Case: DO-214AA, SMB (mechanical compatibility)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Current - Peak Pulse (8/20µs): 400A minimum (performance requirement)
• Current - Hold (Ih): 150mA (circuit operation requirement)

Substitute parts must maintain these specifications to ensure functional equivalence in transient voltage suppression circuits. Variations in breakover voltage (within manufacturer tolerances), on-state voltage, and capacitance do not prevent substitution when the above parameters are met.

Parameter Comparison

Engineering Selection Recommendations

P1500SCMCLRP (Littelfuse Inc.) is the direct equivalent substitute. This part maintains identical electrical specifications to the P1500SCMC while offering active product status and ROHS3 compliance. The packaging format differs (Tape & Reel versus bulk), but electrical performance is unchanged. This substitute is recommended for applications requiring Littelfuse component continuity.

SMP100LC-140 (STMicroelectronics) provides full electrical equivalence with 400A peak pulse current capability. The breakover voltage is 175V (versus 180V), and capacitance is 65pF (versus 55pF). This part is ROHS3 compliant and actively manufactured. Selection of this substitute is appropriate when cross-manufacturer sourcing is acceptable.

SMP100MC-140 (STMicroelectronics) operates at 300A peak pulse current (8/20µs), which is below the 400A specification of the P1500SCMC. This part is suitable only for applications where the reduced peak pulse current rating is acceptable. ROHS3 compliance and active product status are confirmed.

Frequently Asked Questions (FAQ)

Q: Can P1500SCMCLRP directly replace P1500SCMC in existing designs?

A: Yes. P1500SCMCLRP maintains identical electrical specifications including 140V off-state voltage, 400A peak pulse current, and 150mA hold current. The only difference is packaging format (Tape & Reel). No circuit redesign is required.

Q: What is the difference between SMP100LC-140 and SMP100MC-140?

A: The primary difference is peak pulse current rating. SMP100LC-140 is rated for 400A (8/20µs), matching the original P1500SCMC specification. SMP100MC-140 is rated for 300A (8/20µs). Both maintain 140V off-state voltage and 150mA hold current. Selection depends on circuit peak current requirements.

Q: Are cross-manufacturer substitutes electrically compatible?

A: STMicroelectronics SMP100 series parts (SMP100LC-140 and SMP100MC-140) meet the critical electrical parameters: 140V off-state voltage, DO-214AA SMB package, surface mount configuration, and 150mA hold current. Breakover voltage tolerance (175V versus 180V) and capacitance variation (60-65pF versus 55pF) are within acceptable ranges for TVS thyristor applications.

Q: Does packaging format affect circuit performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) packaging formats are manufacturing and supply chain considerations only. Electrical performance and PCB assembly compatibility remain unchanged. The DO-214AA SMB package footprint is identical across all substitutes.

Q: Why is the original P1500SCMC obsolete?

A: Product obsolescence is determined by the manufacturer. P1500SCMCLRP, the direct Littelfuse equivalent, is actively manufactured and recommended for new designs and production continuity.

Q: Are all substitutes RoHS compliant?

A: P1500SCMC is RoHS non-compliant. P1500SCMCLRP, SMP100LC-140, and SMP100MC-140 are all ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components.