P2600SCMCLRP Equivalent & Substitute Parts

Part Overview

The P2600SCMCLRP is a 220V off-state thyristor-based transient voltage suppressor manufactured by Littelfuse Inc. in the SIDACtor® series. This component is designed for surface mount applications in the DO-214AA (SMB) package and is currently in active production status. Finding equivalent or substitute parts may be necessary due to supply chain constraints, lead time requirements, or specific application compatibility needs while maintaining electrical and mechanical performance within acceptable parameters.

Substiute Parts

P2600SCMCLRP

Littelfuse Inc.In Stock: 1485P2600SCMCLRP Datasheet

Current PartRFQ

SMTPA220

STMicroelectronicsIn Stock: 3747SMTPA220 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P2600SCMCLRP is determined by the following critical electrical and mechanical parameters:

Voltage Parameters: Off-state voltage must be 220V to maintain circuit protection characteristics. Breakover voltage tolerance is acceptable within the range of 293V to 300V, as this parameter defines the trigger threshold for transient suppression.

Current Parameters: Peak pulse current capability (8/20µs) is a primary selection criterion. The P2600SCMCLRP specifies 400A; substitute parts with lower peak pulse ratings (such as 150A) represent a functional limitation and must be evaluated against application requirements.

Package Compatibility: Both the main part and substitute must use the DO-214AA (SMB) surface mount package to ensure PCB footprint and assembly process compatibility.

Hold Current: The hold current specification of 150mA must be maintained to ensure proper device latching and circuit behavior.

Compliance: RoHS3 compliance and active product status are required for modern manufacturing environments.

Parameter Comparison

Engineering Selection Recommendations

The SMTPA220 from STMicroelectronics is the identified substitute for the P2600SCMCLRP. Both components meet the following baseline requirements:

• Identical off-state voltage rating of 220V
• Breakover voltage within acceptable tolerance (293V vs. 300V)
• Matching hold current specification of 150mA
• Identical DO-214AA (SMB) package for direct PCB compatibility
• Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1)

The primary electrical difference is the peak pulse current capability: the SMTPA220 is rated for 150A (8/20µs) compared to the P2600SCMCLRP at 400A. This represents a 62.5% reduction in peak pulse current handling. Component selection between these parts must be based on the actual transient current levels present in the application circuit. Applications requiring the full 400A peak pulse capability cannot use the SMTPA220 as a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can the SMTPA220 be used as a direct replacement for the P2600SCMCLRP in all applications?

A: No. While both components share the same off-state voltage, breakover voltage tolerance, hold current, and package, the SMTPA220 has a significantly lower peak pulse current rating (150A vs. 400A). Substitution is only valid for applications where the transient current does not exceed 150A (8/20µs).

Q: What is the significance of the breakover voltage difference (300V vs. 293V)?

A: The breakover voltage defines the threshold at which the thyristor transitions from off-state to on-state. The 7V difference (2.3% variance) is within typical manufacturing tolerance for this device category and does not materially affect circuit protection performance in standard applications.

Q: Are the packages truly identical?

A: Yes. Both the P2600SCMCLRP and SMTPA220 use the DO-214AA (SMB) surface mount package. PCB footprints, solder pad dimensions, and assembly processes are compatible.

Q: Why does the SMTPA220 have lower capacitance (25pF vs. 45pF)?

A: Capacitance is a secondary parameter determined by the internal device structure. The lower capacitance of the SMTPA220 may result in faster transient response in some circuit topologies but does not affect the primary voltage suppression function. Application-specific circuit analysis is required to determine if this difference is significant.

Q: What compliance certifications apply to both parts?

A: Both the P2600SCMCLRP and SMTPA220 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.30.0080. Both carry unlimited moisture sensitivity level (MSL 1).