P3100SCLRP Equivalent & Substitute Parts

Part Overview

The P3100SCLRP is a 275V off-state thyristor-based transient voltage suppressor manufactured by Littelfuse Inc. in the SIDACtor® series. This surface-mount component in DO-214AA (SMB) packaging is designed for transient voltage suppression applications requiring 400A peak pulse current capability. The part maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to provide equivalent electrical performance for applications where component availability, lead time, or supply chain considerations necessitate alternative sourcing.

Substiute Parts

P3100SCLRP

Littelfuse Inc.In Stock: 64451P3100SCLRP Datasheet

Current PartRFQ

SMP100LC-270

STMicroelectronicsIn Stock: 27501SMP100LC-270 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3100SCLRP is determined by equivalence in the following critical electrical and mechanical parameters:

• Off-State Voltage: 270V–275V range
• Peak Pulse Current (8/20µs): 400A minimum
• Peak Pulse Current (10/1000µs): 100A minimum
• Hold Current (Ih): 150mA
• Package: DO-214AA, SMB surface mount
• Compliance: RoHS3 compliant, REACH unaffected

The SMP100LC-270 from STMicroelectronics meets these substitution criteria with a 270V off-state voltage, matching the 400A peak pulse current specification and identical hold current rating. Both components share the same DO-214AA package footprint and surface-mount configuration, enabling direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

Both the P3100SCLRP and SMP100LC-270 are active-status products with full RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications. Selection between these components should be based on:

• Supply availability: The P3100SCLRP maintains 64,400 units in stock; the SMP100LC-270 maintains 27,458 units in stock.
• Packaging format: The P3100SCLRP is supplied in Tape & Reel (TR); the SMP100LC-270 is supplied in Cut Tape (CT) and Digi-Reel® formats.
• Voltage tolerance: The P3100SCLRP specifies 275V off-state with 350V breakover; the SMP100LC-270 specifies 270V off-state with 335V breakover. Both operate within equivalent suppression ranges for standard transient protection circuits.

Frequently Asked Questions (FAQ)

Q: Can the SMP100LC-270 directly replace the P3100SCLRP on existing PCBs?

A: Yes. Both components use identical DO-214AA (SMB) package geometry and surface-mount configuration, enabling direct footprint compatibility without PCB redesign.

Q: What is the significance of the 5V difference in off-state voltage between these parts?

A: The 275V (P3100SCLRP) and 270V (SMP100LC-270) off-state voltages are within the equivalent operating range for transient voltage suppression. Both components trigger at comparable breakover voltages (350V and 335V respectively) and deliver identical peak pulse current performance (400A at 8/20µs).

Q: Are there differences in capacitance that affect circuit performance?

A: The P3100SCLRP specifies 70pF; the SMP100LC-270 specifies 60pF. This 10pF difference is negligible for most transient suppression applications and does not affect substitution suitability.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the P3100SCLRP and SMP100LC-270 are RoHS3 compliant, REACH unaffected, and carry EAR99 export classification with identical HTSUS coding (8541.30.0080).

Q: What packaging options are available for each part?

A: The P3100SCLRP is supplied in Tape & Reel (TR) format. The SMP100LC-270 is supplied in Cut Tape (CT) and Digi-Reel® formats. Packaging selection depends on assembly line requirements and volume considerations.