P1300SBLRP Equivalent & Substitute Parts

Part Overview

The P1300SBLRP is a 120V off-state TVS thyristor manufactured by Littelfuse, part of the SIDACtor® series. This surface-mount component in DO-214AA (SMB) packaging is designed for transient voltage suppression applications requiring 250A peak pulse current capability at 8/20µs waveform. The part is active and in production with full RoHS3 compliance. Substitute parts may be required due to inventory constraints, supply chain considerations, or application-specific performance requirements within compatible electrical and mechanical parameters.

Substiute Parts

P1300SBLRP

LittelfuseIn Stock: 2638P1300SBLRP Datasheet

Current PartRFQ

SMTPA120

STMicroelectronicsIn Stock: 10386SMTPA120 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P1300SBLRP is determined by the following critical parameters:

• Voltage Rating Match: Off-state voltage must be 120V; breakover voltage must be 160V
• Package Compatibility: DO-214AA (SMB) surface-mount package required
• Current Capability: Peak pulse current at 8/20µs waveform must meet or exceed application requirements
• Hold Current: Must be 150 mA or greater to ensure reliable device operation
• Compliance: RoHS3 compliance and REACH unaffected status required

The SMTPA120 from STMicroelectronics meets these core substitution criteria with identical voltage ratings and package type. The primary difference is reduced peak pulse current capability (150A at 8/20µs versus 250A), which determines application suitability based on transient energy requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the P1300SBLRP and SMTPA120 are active products with full RoHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. Selection between these parts depends on peak pulse current requirements: the P1300SBLRP provides 250A capability at 8/20µs, while the SMTPA120 provides 150A at the same waveform. Applications requiring the full 250A transient suppression capacity must use the P1300SBLRP. Applications with transient energy levels within the 150A threshold may use the SMTPA120. Both devices share identical voltage ratings, hold current specifications, and package geometry, ensuring mechanical and electrical compatibility within their respective current ratings.

Frequently Asked Questions (FAQ)

Q: Can SMTPA120 be used as a direct replacement for P1300SBLRP?

A: Direct replacement is possible only if the application transient current does not exceed 150A at 8/20µs waveform. The SMTPA120 has lower peak pulse current capability (150A versus 250A) but maintains identical voltage ratings and package compatibility.

Q: What is the significance of the different capacitance values (60 pF vs. 30 pF)?

A: Capacitance affects high-frequency circuit behavior and EMI characteristics. The P1300SBLRP has higher capacitance (60 pF), which may impact circuit performance differently than the SMTPA120 (30 pF) in sensitive RF or high-speed applications.

Q: Are both parts suitable for the same PCB layout?

A: Yes. Both parts use DO-214AA (SMB) surface-mount packaging with identical footprints and mounting requirements, allowing direct PCB layout compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both P1300SBLRP and SMTPA120 are RoHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What determines whether a substitute part is acceptable?

A: Substitution eligibility is based on matching voltage ratings (120V off-state, 160V breakover), package type (DO-214AA SMB), hold current (150 mA minimum), and ensuring peak pulse current capability meets or exceeds application requirements.