SM15T100CA-M3/9AT Equivalent & Substitute Parts

Part Overview

The SM15T100CA-M3/9AT is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the SM15T series and provides bidirectional transient voltage suppression for general-purpose applications. The device is actively produced and RoHS3 compliant, making it suitable for modern electronic designs requiring overvoltage protection in the 85.5V reverse standoff range.

Equivalent and substitute parts are identified when designs require alternative sourcing, inventory availability, or when specific packaging or performance characteristics align with application requirements while maintaining core electrical functionality.

Substiute Parts

SM15T100CA-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 899SM15T100CA-M3/9AT Datasheet

Current PartRFQ

SM15T100CA

STMicroelectronicsIn Stock: 5753SM15T100CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SM15T100CA-M3/9AT is determined by the following core electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 85.5V
• Voltage - Breakdown (Min): 95V
• Package / Case: DO-214AB, SMC (surface mount compatibility)
• Bidirectional Channels: 1
• Type: Zener
• Base Product Number: SM15T100

Allowable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: May vary based on manufacturer design
• Current - Peak Pulse: May vary based on manufacturer specification
• Power - Peak Pulse: Typically 1500W (1.5kW) for this series
• Operating Temperature Range: May vary within industrial standards
• Packaging Format: Tape & Reel (TR), Cut Tape (CT), or Digi-Reel® acceptable for equivalent function

The substitute part SM15T100CA from STMicroelectronics maintains identical reverse standoff voltage (85.5V), breakdown voltage (95V), and package type (DO-214AB, SMC), qualifying it as a direct functional equivalent despite differences in clamping voltage and peak pulse current specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the SM15T100CA-M3/9AT (Vishay) and SM15T100CA (STMicroelectronics) are active products with ROHS3 compliance and identical core voltage specifications (85.5V reverse standoff, 95V breakdown minimum). Selection between these parts should be based on:

Vishay SM15T100CA-M3/9AT:

• Specified for -65°C to 150°C operating range
• 137V maximum clamping voltage
• 11A peak pulse current (10/1000µs pulse profile)
• Tape & Reel packaging

STMicroelectronics SM15T100CA:

• Specified for -55°C to 150°C operating range
• 178V maximum clamping voltage
• 56A peak pulse current (8/20µs pulse profile)
• Cut Tape and Digi-Reel® packaging options

Both parts maintain RoHS3 compliance and active product status. The choice between manufacturers depends on application-specific requirements for clamping voltage performance, peak pulse current handling, temperature range, and packaging availability.

Frequently Asked Questions (FAQ)

Q: Can SM15T100CA from STMicroelectronics directly replace SM15T100CA-M3/9AT from Vishay?

A: Both parts share identical reverse standoff voltage (85.5V), breakdown voltage (95V), and DO-214AB SMC package type. They are functionally equivalent for applications requiring 85.5V transient voltage suppression. Differences in clamping voltage (137V vs. 178V) and peak pulse current (11A vs. 56A) must be evaluated against specific circuit requirements.

Q: What does the packaging designation mean?

A: Both parts use DO-214AB (SMC) surface mount packaging. The Vishay part is supplied in Tape & Reel (TR) format, while STMicroelectronics offers Cut Tape (CT) and Digi-Reel® options. All formats are compatible with standard surface mount assembly equipment.

Q: Are there temperature range differences between these parts?

A: The Vishay part operates from -65°C to 150°C, while the STMicroelectronics part operates from -55°C to 150°C. Applications requiring operation below -55°C must use the Vishay SM15T100CA-M3/9AT.

Q: What is the significance of the different pulse profiles (10/1000µs vs. 8/20µs)?

A: These represent different test conditions for measuring peak pulse current. The 10/1000µs profile (Vishay) and 8/20µs profile (STMicroelectronics) reflect manufacturer-specific test methodologies. Both specifications are valid for the SM15T series and do not prevent substitution when core voltage parameters match.

Q: Are both parts RoHS3 compliant?

A: Yes, both SM15T100CA-M3/9AT and SM15T100CA are ROHS3 compliant and suitable for applications requiring RoHS certification.