P0720SCMCRP Equivalent & Substitute Parts

Part Overview

The P0720SCMCRP 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 identification of equivalent and substitute parts essential for ongoing design support and procurement continuity. The part's primary function is transient voltage suppression in electronic circuits requiring high current pulse handling capability.

Substiute Parts

P0720SCMCRP

Littelfuse Inc.In Stock: 3783P0720SCMCRP 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 P0720SCMCRP is determined by electrical and mechanical parameter alignment within the TVS thyristor category. The critical parameters governing substitutability are:

• Off-state voltage: 65V (primary voltage rating)
• Peak pulse current capability: 400A at 8/20µs waveform
• On-state voltage: 5V (conduction characteristics)
• Hold current: 150mA (latching behavior)
• Package: DO-214AA, SMB (mechanical and thermal compatibility)
• Surface mount configuration (assembly compatibility)

Two substitute parts meet these criteria: P0720SCMCLRP (direct Littelfuse equivalent with packaging variation) and SMP100LC-65 (STMicroelectronics TRISIL™ series alternative). Both maintain the electrical performance envelope and package footprint required for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

P0720SCMCLRP is the primary substitute for P0720SCMCRP. Both parts are manufactured by Littelfuse Inc. within the SIDACtor® series and share identical electrical specifications. The P0720SCMCLRP is currently in active production status with ROHS3 compliance, addressing the obsolescence and regulatory limitations of the original part. The packaging difference (Tape & Reel versus bulk) does not affect electrical or mechanical compatibility.

SMP100LC-65 from STMicroelectronics is an alternative substitute within the TRISIL™ series. This part maintains all critical electrical parameters with minor variations: breakover voltage of 85V (versus 88V) and capacitance of 90pF (versus 75pF). Both parameters remain within acceptable substitution tolerance for TVS thyristor applications. SMP100LC-65 is ROHS3 compliant and actively produced, with availability in Cut Tape and Digi-Reel® packaging formats.

Frequently Asked Questions (FAQ)

Q: Can P0720SCMCLRP directly replace P0720SCMCRP in existing designs?

A: Yes. P0720SCMCLRP is a direct electrical and mechanical equivalent. Both parts share identical off-state voltage (65V), peak pulse current (400A at 8/20µs), on-state voltage (5V), hold current (150mA), and DO-214AA package footprint. The only difference is packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Q: What are the implications of the 3V breakover voltage difference between P0720SCMCRP (88V) and SMP100LC-65 (85V)?

A: The breakover voltage difference of 3V represents a 3.4% variation. For TVS thyristor applications, this falls within typical design tolerance margins. The SMP100LC-65 will trigger at a lower voltage threshold, providing marginally faster transient suppression. Circuit validation is necessary to confirm acceptability in specific applications.

Q: Does the 15pF capacitance increase in SMP100LC-65 (90pF versus 75pF) affect circuit performance?

A: The capacitance difference of 15pF represents a 20% increase. In high-frequency or sensitive analog circuits, this may introduce measurable impedance changes. For standard transient suppression applications, this variation is typically acceptable. Application-specific circuit analysis is recommended for frequency-dependent designs.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the DO-214AA (SMB) package with identical mechanical dimensions and pin configuration. PCB layout and assembly processes require no modification for substitution.

Q: What is the significance of RoHS compliance status in part selection?

A: P0720SCMCRP is RoHS non-compliant, while both P0720SCMCLRP and SMP100LC-65 are ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, only the compliant alternatives are acceptable. Compliance status does not affect electrical performance.

Q: Which substitute part offers the best availability?

A: Both P0720SCMCLRP and SMP100LC-65 are in active production with substantial inventory levels (55,100 pieces each). Availability is equivalent between the two alternatives. Selection should be based on electrical parameter requirements and supply chain preferences.