SM15T150A-E3/9AT Equivalent & Substitute Parts

Part Overview

The SM15T150A-E3/9AT is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose transient voltage protection applications and operates within the 128V reverse standoff voltage class. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level rating. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring compatible TVS diode functionality.

Substiute Parts

SM15T150A-E3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 975SM15T150A-E3/9AT Datasheet

Current PartRFQ

1.5SMC150A

Taiwan Semiconductor CorporationIn Stock: 147811.5SMC150A Datasheet

MFR RecommendedRFQ

1.5SMC150A

Taiwan Semiconductor CorporationIn Stock: 147811.5SMC150A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SM15T150A-E3/9AT are identified based on strict electrical and mechanical parameter compatibility. The primary substitution criteria are:

• Voltage - Reverse Standoff (Typ): 128V
• Voltage - Breakdown (Min): 143V
• Voltage - Clamping (Max) @ Ipp: 207V
• Current - Peak Pulse (10/1000µs): 7.2A minimum
• Power - Peak Pulse: 1500W
• Package / Case: DO-214AB (SMC/SMCJ)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

The 1.5SMC150A from Taiwan Semiconductor Corporation meets all critical electrical parameters and maintains mechanical compatibility through identical package designation and surface mount configuration. Both parts operate within the same voltage class and power dissipation envelope, enabling direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SM15T150A-E3/9AT and 1.5SMC150A are active production components with ROHS3 compliance and unlimited moisture sensitivity level ratings. The 1.5SMC150A provides a higher peak pulse current specification (7.6A versus 7.2A), which represents improved performance margin within the same power dissipation class. The operating temperature range of the 1.5SMC150A extends to -55°C minimum, compared to -65°C for the SM15T150A-E3/9AT; this difference is non-critical for most general-purpose applications operating within standard industrial temperature ranges. Both components maintain identical voltage class parameters and package compatibility, supporting direct circuit substitution. Selection between these parts should be based on availability, lead time, and procurement cost considerations.

Frequently Asked Questions (FAQ)

Q: Can the 1.5SMC150A directly replace the SM15T150A-E3/9AT in existing designs?

A: Yes. Both components share identical voltage class specifications (128V reverse standoff, 143V breakdown minimum, 207V clamping maximum), equivalent power dissipation (1500W peak pulse), and compatible DO-214AB surface mount packaging. The 1.5SMC150A provides higher peak pulse current capability (7.6A versus 7.2A), which is compatible with the original design requirements.

Q: What is the significance of the different operating temperature ranges?

A: The SM15T150A-E3/9AT operates from -65°C to 150°C, while the 1.5SMC150A operates from -55°C to 150°C. For applications requiring operation below -55°C, the SM15T150A-E3/9AT is the appropriate selection. For standard industrial and commercial temperature ranges, both components are functionally equivalent.

Q: Are there package compatibility considerations between DO-214AB (SMCJ) and DO-214AB (SMC)?

A: Both designations refer to the same physical package footprint and form factor. The SMCJ and SMC suffixes indicate manufacturer-specific package nomenclature but represent mechanically and electrically identical configurations. PCB layouts and assembly processes require no modification for substitution.

Q: How do the peak pulse current ratings affect circuit performance?

A: The 1.5SMC150A peak pulse current rating of 7.6A exceeds the SM15T150A-E3/9AT specification of 7.2A. Both components operate within the same 1500W power dissipation envelope. The higher current rating of the substitute part provides additional transient suppression capability without exceeding thermal limits.

Q: What compliance certifications apply to both parts?

A: Both the SM15T150A-E3/9AT and 1.5SMC150A are ROHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity level (MSL 1) ratings. Both components are classified under ECCN EAR99 and HTSUS code 8541.10.0080.