P2100SALRP Equivalent & Substitute Parts

Part Overview

The P2100SALRP is a 180V off-state transient voltage suppressor (TVS) thyristor manufactured by Littelfuse Inc. in the SIDACtor® series. This surface-mount component in DO-214AA (SMB) packaging is designed for transient overvoltage protection applications requiring 150 A peak pulse current capability. The part is active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, design flexibility, or inventory optimization.

Substiute Parts

P2100SALRP

Littelfuse Inc.In Stock: 12721P2100SALRP Datasheet

Current PartRFQ

SMTPA180

STMicroelectronicsIn Stock: 3882SMTPA180 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P2100SALRP is determined by the following critical parameters:

• Voltage - Off State: Must be 180V
• Voltage - Breakover: Must be 240V
• Current - Peak Pulse (8/20µs): Must be 150A
• Current - Hold (Ih): Must be 150mA
• Package / Case: Must be DO-214AA, SMB
• Mounting Type: Must be Surface Mount
• RoHS Status: Must be ROHS3 Compliant

The SMTPA180 from STMicroelectronics meets all substitution criteria across these parameters, enabling direct functional replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the P2100SALRP and SMTPA180 are active production components with identical RoHS3 compliance and REACH unaffected status. Selection between these parts is based on availability, packaging format preference, and supply chain requirements. The P2100SALRP is supplied in Tape & Reel (TR) format with 12,660 units in stock. The SMTPA180 is supplied in Cut Tape (CT) and Digi-Reel® format with 3,810 units in stock. Both components satisfy the electrical and mechanical requirements for 180V off-state TVS thyristor applications in DO-214AA packaging.

Frequently Asked Questions (FAQ)

Q: Can SMTPA180 directly replace P2100SALRP in existing designs? A: Yes. Both parts share identical off-state voltage (180V), breakover voltage (240V), peak pulse current (150A at 8/20µs), and hold current (150mA) specifications. Both are housed in DO-214AA, SMB surface-mount packages and comply with RoHS3 and REACH requirements.

Q: What is the difference in capacitance between these parts? A: The P2100SALRP has 35pF capacitance while the SMTPA180 has 25pF. This difference may affect high-frequency circuit behavior and should be evaluated in applications sensitive to parasitic capacitance.

Q: Are there packaging differences between these parts? A: The P2100SALRP is supplied in Tape & Reel (TR) format. The SMTPA180 is supplied in Cut Tape (CT) and Digi-Reel® format. Both use the same DO-214AA, SMB physical package for PCB mounting.

Q: Do both parts have the same moisture sensitivity rating? A: Yes. Both the P2100SALRP and SMTPA180 have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without baking requirements.

Q: What is the difference in peak pulse current at 10/1000µs? A: The P2100SALRP is rated for 45A at 10/1000µs while the SMTPA180 is rated for 50A. Both exceed the minimum requirement for this pulse duration profile.