SMF7V0A-M3-08 Equivalent & Substitute Parts

Part Overview

The SMF7V0A-M3-08 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is part of the eSMP® series and is designed for general-purpose transient voltage suppression applications. The device features a 7V reverse standoff voltage with a 12V maximum clamping voltage and peak pulse current rating of 16.7A. The part is currently in active production status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance parameters are required but alternative packaging, current ratings, or manufacturing sources are acceptable for system integration.

Substiute Parts

SMF7V0A-M3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 790SMF7V0A-M3-08 Datasheet

Current PartRFQ

PTVS7V0S1UTR,115

NXP USA Inc.In Stock: 8195PTVS7V0S1UTR,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMF7V0A-M3-08 is determined by the following critical electrical parameters that must remain constant across equivalent parts:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 7.78V
• Voltage - Clamping (Max) @ Ipp: 12V
• Type: Zener, Unidirectional
• Unidirectional Channels: 1

The PTVS7V0S1UTR,115 manufactured by NXP USA Inc. meets these core electrical requirements. While this substitute features a higher peak pulse current rating (33.3A versus 16.7A) and increased power dissipation capability (400W versus 200W), the voltage parameters remain identical. The substitute uses a different surface mount package (SOD-123W versus DO-219AB) and operates across a slightly different temperature range (-55°C to 185°C TA versus -65°C to 175°C TJ). Both parts maintain the same unidirectional zener topology and are suitable for general-purpose transient voltage suppression where the electrical voltage thresholds are the primary selection criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the SMF7V0A-M3-08 and PTVS7V0S1UTR,115 are active production components suitable for 7V transient voltage suppression applications. The primary selection criterion is package compatibility with the target PCB layout. The SMF7V0A-M3-08 uses the DO-219AB (SMF) package, while the NXP substitute employs the SOD-123W package. The NXP part offers enhanced current handling (33.3A peak pulse versus 16.7A) and extended upper operating temperature capability (185°C versus 175°C), which may provide additional design margin in high-stress thermal environments. Both parts are surface mount devices and maintain identical voltage suppression characteristics. The choice between these parts should be based on PCB footprint requirements, thermal management needs, and manufacturing source availability.

Frequently Asked Questions (FAQ)

Q: Can the PTVS7V0S1UTR,115 directly replace the SMF7V0A-M3-08 on an existing PCB?

A: Direct PCB replacement is not possible without layout modification. The SMF7V0A-M3-08 uses the DO-219AB (SMF) package, while the PTVS7V0S1UTR,115 uses the SOD-123W package. These packages have different footprints and pin configurations. PCB redesign is required for physical substitution.

Q: Are the voltage suppression characteristics identical between these two parts?

A: Yes. Both parts share identical voltage parameters: 7V reverse standoff voltage, 7.78V minimum breakdown voltage, and 12V maximum clamping voltage. The electrical suppression behavior is equivalent for transient voltage events within these specifications.

Q: What is the significance of the higher peak pulse current rating in the NXP part?

A: The PTVS7V0S1UTR,115 is rated for 33.3A peak pulse current compared to 16.7A for the Vishay part. This higher rating provides greater transient energy absorption capability and may be beneficial in applications with higher expected surge currents, though both parts maintain the same voltage clamping threshold.

Q: Do both parts meet the same compliance standards?

A: The SMF7V0A-M3-08 is specified as RoHS3 compliant. The NXP substitute includes AEC-Q101 automotive qualification. Compliance documentation should be verified against specific application requirements.

Q: What temperature range considerations apply to each part?

A: The SMF7V0A-M3-08 operates from -65°C to 175°C (junction temperature). The PTVS7V0S1UTR,115 operates from -55°C to 185°C (ambient temperature). The NXP part offers a wider upper temperature range, which may be advantageous in high-temperature applications.