P6SMB180 Equivalent & Substitute Parts

Part Overview

The P6SMB180 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 154V reverse standoff voltage with a 258.3V maximum clamping voltage at peak pulse current, housed in a DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

P6SMB180

Littelfuse Inc.In Stock: 2098P6SMB180 Datasheet

Current PartRFQ

P6SMB180A

Eaton - Electronics DivisionIn Stock: 119451P6SMB180A Datasheet

MFR RecommendedRFQ

P6SMB180A

Eaton - Electronics DivisionIn Stock: 119451P6SMB180A Datasheet

MFR RecommendedRFQ

P6SMB180A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 995P6SMB180A-M3/5B Datasheet

MFR RecommendedRFQ

SMBJ154A-TR

STMicroelectronicsIn Stock: 17360SMBJ154A-TR Datasheet

MFR RecommendedRFQ

TVP06B181A-G

Comchip TechnologyIn Stock: 743TVP06B181A-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB180 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 154V
• Unidirectional Channels: 1
• Current - Peak Pulse (10/1000µs): 2.4A to 2.5A
• Power - Peak Pulse: 600W
• Voltage - Clamping (Max) @ Ipp: 246V to 258.3V
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to -65°C minimum, 150°C maximum

All identified substitute parts maintain the same reverse standoff voltage (154V), unidirectional topology, and surface-mount SMB package configuration. Clamping voltage variations (246V to 258.3V) and peak pulse current variations (2.4A to 2.5A) remain within acceptable operational parameters for this device category. All substitutes are active products with current manufacturing status and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

P6SMB180A (Eaton - Electronics Division) is the manufacturer-recommended primary substitute. This part maintains identical reverse standoff voltage (154V), peak pulse current (2.5A), and power rating (600W) as the original P6SMB180. The clamping voltage is reduced to 246V, providing enhanced protection margins. The part is active in production with RoHS compliance and is available in high volume (119,400 pcs in stock) with Tape & Reel packaging suitable for automated assembly.

P6SMB180A-M3/5B (Vishay General Semiconductor) offers an extended operating temperature range (-65°C to 150°C) compared to the original specification, providing additional thermal margin for demanding applications. Peak pulse current is rated at 2.4A with 246V clamping voltage. This variant is ROHS3 compliant and available in Tape & Box packaging. The base product number P6SMB180 confirms direct lineage to the original part.

SMBJ154A-TR (STMicroelectronics) provides equivalent electrical performance with 154V reverse standoff, 246V clamping voltage, and 2.4A peak pulse current. This part is active in production with ROHS3 compliance and is available in high volume (17,285 pcs in stock) with Cut Tape & Digi-Reel packaging. The SMBJ series designation indicates compatibility with standard SMB footprints.

TVP06B181A-G (Comchip Technology) delivers comparable performance with 154V reverse standoff, 246V clamping voltage, and 2.44A peak pulse current. This part is active in production with ROHS3 compliance and Tape & Reel packaging. The DO-214AA (SMB) package ensures direct footprint compatibility.

All substitute parts are active products with current manufacturing support, eliminating obsolescence risk associated with the original P6SMB180.

Frequently Asked Questions (FAQ)

Q: Can P6SMB180A be used as a direct replacement for P6SMB180?

A: Yes. Both parts share identical reverse standoff voltage (154V), unidirectional topology, peak pulse current (2.5A), power rating (600W), and DO-214AA SMB package configuration. The P6SMB180A is the manufacturer-recommended substitute and is actively produced by Eaton.

Q: What is the difference between the clamping voltages in the original P6SMB180 (258.3V) and the substitutes (246V)?

A: The lower clamping voltage in substitute parts (246V) provides tighter voltage regulation and enhanced transient suppression. This represents an improvement in protection performance and is acceptable for all applications where the original 258.3V clamping voltage was specified.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the DO-214AA (SMB) package, which maintains identical footprint dimensions and land pattern requirements. No PCB redesign is necessary for substitution.

Q: Which substitute part offers the widest operating temperature range?

A: The P6SMB180A-M3/5B (Vishay) operates from -65°C to 150°C, extending the minimum temperature specification by 10°C compared to the original P6SMB180 (-55°C to 150°C). This provides additional thermal margin for applications in extreme cold environments.

Q: Are all substitute parts RoHS compliant?

A: Yes. All identified substitutes are ROHS3 compliant, meeting current environmental and regulatory requirements. The original P6SMB180 is also ROHS3 compliant.

Q: What packaging options are available for these substitutes?

A: P6SMB180A (Eaton) is available in Tape & Reel (TR). P6SMB180A-M3/5B (Vishay) is available in Tape & Box (TB). SMBJ154A-TR (STMicroelectronics) is available in Cut Tape (CT) & Digi-Reel. TVP06B181A-G (Comchip) is available in Tape & Reel (TR). Select packaging based on assembly process requirements and volume needs.

Q: Can I mix different substitute parts in the same production run?

A: Yes. All substitute parts meet the same electrical and mechanical specifications for the P6SMB180 application. However, maintaining consistent sourcing from a single manufacturer is recommended for supply chain stability and quality consistency.