P2100SCLRP Equivalent & Substitute Parts

Part Overview

The P2100SCLRP 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 400A peak pulse current capability at 8/20µs waveform. The part is active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to provide equivalent protection performance when the primary part is unavailable or when alternative sourcing is required.

Substiute Parts

P2100SCLRP

Littelfuse Inc.In Stock: 70195P2100SCLRP Datasheet

Current PartRFQ

SMTPA180

STMicroelectronicsIn Stock: 3882SMTPA180 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P2100SCLRP is determined by the following critical electrical and mechanical parameters:

• Voltage Rating Match: Off-state voltage of 180V and breakover voltage of 240V must be identical to maintain circuit protection thresholds
• Package Compatibility: DO-214AA (SMB) surface-mount package required for PCB layout compatibility
• On-State Voltage: 4V maximum on-state voltage for consistent voltage clamping performance
• Hold Current: 150mA hold current specification for reliable device latching behavior
• RoHS3 Compliance: Environmental and regulatory requirement for equivalent parts

The SMTPA180 from STMicroelectronics meets these core substitution criteria. However, the peak pulse current ratings differ: the SMTPA180 provides 150A at 8/20µs and 50A at 10/1000µs, compared to the P2100SCLRP's 400A and 100A respectively. This difference requires circuit-level evaluation based on application transient energy requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the P2100SCLRP and SMTPA180 are active production parts with ROHS3 compliance and unlimited moisture sensitivity ratings, making them suitable for industrial and commercial applications. The primary distinction is peak pulse current handling: the P2100SCLRP is rated for 400A at 8/20µs, while the SMTPA180 is rated for 150A at the same waveform. Selection between these parts depends on the maximum transient current expected in the protected circuit. The identical voltage ratings (180V off-state, 240V breakover) and hold current (150mA) ensure equivalent protection threshold behavior. The SMTPA180's lower capacitance (25pF versus 90pF) may provide advantages in high-frequency applications where parasitic capacitance effects are critical.

Frequently Asked Questions (FAQ)

Q: Can the SMTPA180 directly replace the P2100SCLRP in all applications?

A: Direct replacement is possible only if the application's maximum transient current does not exceed 150A at 8/20µs. The identical voltage ratings and hold current ensure equivalent protection thresholds. If transient currents exceed 150A, the P2100SCLRP's higher current rating is required.

Q: What is the significance of the different peak pulse current ratings?

A: Peak pulse current rating indicates the maximum transient current the device can safely suppress without degradation. The P2100SCLRP handles 400A at 8/20µs, while the SMTPA180 handles 150A at the same waveform. Selection must match the actual transient current in the protected circuit.

Q: Are both parts suitable for high-frequency applications?

A: The SMTPA180 has lower capacitance (25pF) compared to the P2100SCLRP (90pF), making it preferable for circuits sensitive to parasitic capacitance effects at higher frequencies.

Q: Do both parts meet the same regulatory and environmental standards?

A: Yes. Both the P2100SCLRP and SMTPA180 are ROHS3 compliant, REACH unaffected, and rated MSL 1 (unlimited moisture sensitivity), making them equivalent for regulatory and environmental requirements.

Q: What packaging formats are available for these parts?

A: Both parts use the DO-214AA (SMB) surface-mount package. The P2100SCLRP is supplied in Tape & Reel (TR) format, while the SMTPA180 is available in Cut Tape (CT) and Digi-Reel® formats.