NP0720SCMCT3G Equivalent & Substitute Parts

Part Overview

The NP0720SCMCT3G is a 65V off-state, 400A peak pulse TVS thyristor manufactured by onsemi in DO-214AA (SMB) surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part functions as a transient voltage suppressor for circuit protection applications requiring high current pulse handling capability.

Substiute Parts

NP0720SCMCT3G

onsemiIn Stock: 923NP0720SCMCT3G Datasheet

Current PartRFQ

P0720SCLRP

Littelfuse Inc.In Stock: 145226P0720SCLRP Datasheet

DirectRFQ

TB0720M-13-F

Diodes IncorporatedIn Stock: 25376TB0720M-13-F Datasheet

DirectRFQ

P0720SCMCLRP

Littelfuse Inc.In Stock: 55112P0720SCMCLRP Datasheet

SimilarRFQ

P0722SBLRP

Littelfuse Inc.In Stock: 1408P0722SBLRP Datasheet

SimilarRFQ

SMP100LC-65

STMicroelectronicsIn Stock: 55194SMP100LC-65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the NP0720SCMCT3G is determined by the following critical parameters:

• Voltage Rating Match: Off-state voltage of 65V and breakover voltage of 88V are mandatory for circuit protection equivalence
• Current Handling: Peak pulse current (8/20µs) of 400A defines the primary substitution class
• Package Compatibility: DO-214AA (SMB) surface mount package is required for PCB layout compatibility
• Hold Current: 150mA hold current specification must be maintained for reliable thyristor operation
• Number of Elements: Single element configuration is required for direct substitution

Substitute parts are grouped into two categories:

Direct Equivalents (400A peak pulse, 150mA hold current): P0720SCLRP, P0720SCMCLRP, SMP100LC-65

Functional Alternatives (reduced current rating or modified specifications): TB0720M-13-F, P0722SBLRP

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (400A Peak Pulse Requirement):

P0720SCLRP (Littelfuse) is the primary direct equivalent. This part maintains all critical electrical parameters including 400A peak pulse current (8/20µs), 150mA hold current, and 65V off-state voltage. The part is active in production with ROHS3 compliance and unlimited moisture sensitivity level. Inventory availability is 145,200 units.

SMP100LC-65 (STMicroelectronics) provides an alternative direct equivalent with identical current ratings and hold current specification. The breakover voltage is 85V (3V lower than the original specification). This part is active with ROHS3 compliance and 55,100 units in stock.

P0720SCMCLRP (Littelfuse) matches the original part's electrical performance with 400A peak pulse current and 150mA hold current. On-state voltage is 5V (1V higher than original). This part is active with ROHS3 compliance and 55,100 units available.

For Reduced Current Applications (250A Peak Pulse):

TB0720M-13-F (Diodes Incorporated) is suitable for applications where 250A peak pulse current is acceptable. This part maintains 65V off-state voltage and 150mA hold current but reduces peak pulse current to 250A. The part is active with ROHS3 compliance and 25,300 units in stock.

P0722SBLRP (Littelfuse) features a dual-element configuration (2 elements) with 250A peak pulse current. This part has a higher on-state voltage of 8V and reduced hold current of 120mA. REACH compliance is affected for this part. Use only when dual-element topology is acceptable for the application.

Compliance Considerations:

All substitute parts except P0722SBLRP maintain REACH unaffected status. All active substitutes are ROHS3 compliant. The original NP0720SCMCT3G is obsolete; selection of any active substitute is necessary for new production.

Frequently Asked Questions (FAQ)

Q: Can P0720SCLRP directly replace NP0720SCMCT3G in existing designs?

A: Yes. P0720SCLRP maintains identical off-state voltage (65V), breakover voltage (88V), peak pulse current (400A at 8/20µs), and hold current (150mA). The package, mounting type, and number of elements are identical. The primary difference is capacitance (150pF vs. 33pF), which may affect high-frequency circuit behavior.

Q: What is the impact of different capacitance values among substitute parts?

A: Capacitance affects transient response and high-frequency performance. The original part specifies 33pF. Substitutes range from 45pF to 150pF. Higher capacitance may increase response time in fast-switching applications. Circuit validation is necessary if capacitance deviation exceeds design tolerances.

Q: Can TB0720M-13-F be used as a substitute if the application requires 400A peak pulse current?

A: No. TB0720M-13-F is rated for 250A peak pulse current (8/20µs), which is 150A lower than the original specification. Use only in applications where 250A peak pulse current is sufficient.

Q: What is the difference between P0722SBLRP and other substitutes?

A: P0722SBLRP features a dual-element (TwinChip™) configuration with 2 elements versus 1 element in the original part. This results in different electrical characteristics: 250A peak pulse current, 120mA hold current, and 8V on-state voltage. This part is suitable only for applications where dual-element topology is acceptable.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use DO-214AA (SMB) surface mount package, ensuring PCB layout compatibility. Packaging formats vary: P0720SCLRP, P0720SCMCLRP, and P0722SBLRP are supplied in Tape & Reel (TR); TB0720M-13-F is supplied in Tape & Reel (TR); SMP100LC-65 is supplied in Cut Tape (CT) & Digi-Reel®. Verify packaging format requirements for automated assembly processes.

Q: Which substitute offers the best inventory availability?

A: P0720SCLRP has the highest inventory with 145,200 units in stock. SMP100LC-65 and P0720SCMCLRP each have 55,100 units available. TB0720M-13-F has 25,300 units. P0722SBLRP has the lowest availability at 1,391 units.

Q: Is SMP100LC-65 acceptable if the breakover voltage is 85V instead of 88V?

A: SMP100LC-65 has a 3V lower breakover voltage (85V vs. 88V). This affects the trigger threshold for transient suppression. Use only if circuit design tolerates the lower breakover voltage specification.