Littelfuse P0080SA TVS Thyristor Equivalent & Substitute Parts

Part Overview

The Littelfuse P0080SA is a 6V off-state, 150A peak pulse (8/20µs) transient voltage suppressor thyristor in DO-214AA (SMB) surface mount package, part of the SIDACtor® series. This component is classified as obsolete, making identification of suitable alternatives necessary for new designs and ongoing production support. The part operates with a 25V breakover voltage and 4V on-state voltage, designed for transient suppression applications requiring SMB package compatibility.

Substiute Parts

P0080SA

Littelfuse Inc.In Stock: 6478P0080SA Datasheet

Current PartRFQ

P0080SALRP

Littelfuse Inc.In Stock: 7526P0080SALRP Datasheet

DirectRFQ

SMP100LC-8

STMicroelectronicsIn Stock: 17175SMP100LC-8 Datasheet

MFR RecommendedRFQ

SMP75-8

STMicroelectronicsIn Stock: 1875SMP75-8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TVS thyristor devices is determined by the following parameters:

Primary Compatibility Criteria:

• Package / Case: DO-214AA, SMB (mechanical and thermal compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)
• Number of Elements: 1 (functional equivalence)
• Voltage - Off State: tolerance range for circuit protection requirements
• Current - Peak Pulse (8/20µs): capability to handle transient energy
• Current - Hold (Ih): minimum holding current for device operation

Secondary Compliance Criteria:

• RoHS Status and REACH compliance for regulatory requirements
• Product Status (Active vs. Obsolete) for supply chain continuity

The substitute parts identified maintain DO-214AA/SMB package compatibility and single-element configuration. However, voltage and current ratings differ, requiring circuit-level validation to confirm suitability for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

P0080SALRP (Littelfuse Inc.) — Direct Substitute

P0080SALRP is the direct functional equivalent of P0080SA, maintaining identical electrical specifications: 6V off-state voltage, 25V breakover voltage, 150A peak pulse current (8/20µs), and 50mA holding current. The primary distinction is product status: P0080SALRP is active, whereas P0080SA is obsolete. P0080SALRP achieves ROHS3 compliance and is supplied in Tape & Reel packaging, providing supply chain continuity for applications requiring the original P0080SA specifications. This part is the preferred choice for direct replacement in existing designs.

SMP100LC-8 (STMicroelectronics) — Higher Current Rating Alternative

SMP100LC-8 operates at 8V off-state voltage with 15V breakover voltage and delivers 400A peak pulse current (8/20µs), exceeding the P0080SA's 150A rating. This part is suitable for applications where higher transient current handling is required or where the 8V off-state voltage is acceptable. SMP100LC-8 is ROHS3 compliant and active in production. The reduced capacitance (75pF vs. 150pF) may affect high-frequency circuit behavior.

SMP75-8 (STMicroelectronics) — Moderate Current Rating Alternative

SMP75-8 provides 8V off-state voltage with 15V breakover voltage and 250A peak pulse current (8/20µs), positioning it between the P0080SA and SMP100LC-8 in current capability. This part is ROHS3 compliant and active. The 60pF capacitance is lower than the original part, requiring circuit validation for frequency-dependent applications.

All substitute parts maintain DO-214AA/SMB package compatibility and single-element configuration. Selection between alternatives depends on circuit voltage tolerance, transient current requirements, and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can P0080SALRP directly replace P0080SA in existing designs?

A: Yes. P0080SALRP maintains identical electrical specifications: 6V off-state voltage, 25V breakover voltage, 150A peak pulse current (8/20µs), 4V on-state voltage, and 50mA holding current. Both use DO-214AA/SMB packaging. The primary difference is product status (P0080SALRP is active) and RoHS compliance (ROHS3). No circuit redesign is required.

Q: What are the key differences between the Littelfuse and STMicroelectronics alternatives?

A: The STMicroelectronics SMP series parts (SMP100LC-8 and SMP75-8) operate at higher off-state voltages (8V vs. 6V) and lower breakover voltages (15V vs. 25V). Both STMicroelectronics parts deliver higher peak pulse currents: SMP100LC-8 provides 400A and SMP75-8 provides 250A, compared to P0080SA's 150A. All three maintain 50mA holding current and DO-214AA/SMB package compatibility.

Q: Can SMP100LC-8 or SMP75-8 be used as direct replacements?

A: Not without circuit validation. While these parts share the same package and holding current, their voltage ratings differ significantly. The 8V off-state voltage and 15V breakover voltage of the STMicroelectronics parts may not be suitable for circuits designed for the P0080SA's 6V off-state and 25V breakover specifications. Application-specific testing is required to confirm compatibility.

Q: What is the significance of the different capacitance values?

A: P0080SA has 150pF capacitance, while SMP100LC-8 has 75pF and SMP75-8 has 60pF. Capacitance affects high-frequency circuit behavior and transient response characteristics. In applications sensitive to capacitive loading or operating at high frequencies, the lower capacitance of the STMicroelectronics parts may alter circuit performance.

Q: Are all substitute parts RoHS compliant?

A: P0080SA is RoHS non-compliant. P0080SALRP, SMP100LC-8, and SMP75-8 are all ROHS3 compliant. For applications subject to RoHS regulations, P0080SALRP is the only direct substitute meeting compliance requirements.

Q: What packaging options are available?

A: P0080SA has unspecified packaging. P0080SALRP is supplied in Tape & Reel (TR). SMP100LC-8 and SMP75-8 are available in Cut Tape (CT) and Digi-Reel® formats. Packaging selection depends on assembly process requirements and order quantities.

Q: How do the current ratings affect device selection?

A: P0080SA handles 150A peak pulse (8/20µs) and 45A peak pulse (10/1000µs). SMP100LC-8 handles 400A and 100A respectively; SMP75-8 handles 250A and 75A respectively. Selection depends on the maximum transient current the circuit must suppress. Higher-rated devices provide greater margin but may introduce unnecessary cost and capacitive loading.