P0720SCMC Equivalent & Substitute Parts

Part Overview

The P0720SCMC is a 65V off-state, 400A peak pulse 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 substitutes necessary for new designs and ongoing production requirements. The part provides transient voltage suppression through a thyristor mechanism with a breakover voltage of 88V and on-state voltage of 5V.

Substiute Parts

P0720SCMC

Littelfuse Inc.In Stock: 1075P0720SCMC Datasheet

Current PartRFQ

P0720SCMCLRP

Littelfuse Inc.In Stock: 55112P0720SCMCLRP Datasheet

DirectRFQ

SMP100LC-65

STMicroelectronicsIn Stock: 55194SMP100LC-65 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P0720SCMC is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Off State: 65V (exact match required)
• Voltage - Breakover: 88V ±3V tolerance acceptable
• Current - Peak Pulse (8/20µs): 400A (exact match required)
• Current - Peak Pulse (10/1000µs): 100A (exact match required)
• Current - Hold (Ih): 150mA (exact match required)
• Package / Case: DO-214AA, SMB (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Number of Elements: 1 (exact match required)

The substitute parts listed below meet these criteria and are therefore electrically and mechanically interchangeable with the P0720SCMC in circuit applications requiring TVS thyristor protection.

Parameter Comparison

Engineering Selection Recommendations

P0720SCMCLRP is the direct Littelfuse equivalent to the obsolete P0720SCMC. Both parts are from the SIDACtor® series with identical electrical specifications. The P0720SCMCLRP is currently in active production status and is ROHS3 compliant, making it the preferred choice for new designs and production continuity. The primary difference is packaging format: P0720SCMCLRP is supplied in Tape & Reel (TR) configuration, suitable for automated assembly processes.

SMP100LC-65 from STMicroelectronics is an alternative substitute from the SMP TRISIL™ series. It meets all critical electrical parameters with a breakover voltage of 85V (within acceptable tolerance of the 88V specification) and maintains identical current ratings and hold current. The capacitance is 90pF versus 75pF in the Littelfuse parts. SMP100LC-65 is ROHS3 compliant and available in Cut Tape (CT) and Digi-Reel® packaging. Selection between Littelfuse and STMicroelectronics alternatives depends on supply chain availability, packaging requirements, and design validation protocols.

Frequently Asked Questions (FAQ)

Q: Can P0720SCMCLRP directly replace P0720SCMC in existing designs?

A: Yes. P0720SCMCLRP is electrically and mechanically identical to P0720SCMC. Both are SIDACtor® series parts with the same voltage, current, and package specifications. The difference is product status (active vs. obsolete) and packaging format (Tape & Reel vs. standard packaging).

Q: Is SMP100LC-65 a suitable substitute for P0720SCMC?

A: Yes. SMP100LC-65 meets all critical electrical parameters: 65V off-state voltage, 400A peak pulse current (8/20µs), 100A peak pulse current (10/1000µs), and 150mA hold current. The breakover voltage is 85V versus 88V, which is within acceptable tolerance. Package and mounting type are identical (DO-214AA, SMB, surface mount).

Q: What is the difference in capacitance between these parts?

A: P0720SCMC and P0720SCMCLRP both have 75pF capacitance. SMP100LC-65 has 90pF capacitance. This difference may affect high-frequency circuit behavior and should be evaluated in applications with stringent capacitance requirements.

Q: Are all substitute parts RoHS compliant?

A: P0720SCMC is RoHS non-compliant. Both P0720SCMCLRP and SMP100LC-65 are ROHS3 compliant, meeting current environmental regulations for new production.

Q: What packaging options are available for these substitutes?

A: P0720SCMCLRP is supplied in Tape & Reel (TR) format for automated assembly. SMP100LC-65 is available in Cut Tape (CT) and Digi-Reel® packaging. Packaging selection depends on production volume and assembly equipment compatibility.

Q: Can these parts be used interchangeably in the same circuit board design?

A: Yes, provided the circuit design does not impose specific constraints on capacitance or breakover voltage tolerance. All three parts share identical package geometry (DO-214AA, SMB) and can be mounted in the same footprint. Verify that the 90pF capacitance of SMP100LC-65 and the 85V breakover voltage do not conflict with circuit requirements.