SM15T150CA-M3/9AT Equivalent & Substitute Parts

Part Overview

The SM15T150CA-M3/9AT is an active Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This bidirectional Zener diode is designed for general-purpose transient voltage suppression applications in surface mount configurations. The part operates across a temperature range of -65°C to 150°C and is RoHS3 compliant with MSL Level 1 rating. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and packaging standards to ensure direct interchangeability in circuit designs.

Substiute Parts

SM15T150CA-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 1014SM15T150CA-M3/9AT Datasheet

Current PartRFQ

1.5SMC150CA-E3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 79291.5SMC150CA-E3/9AT Datasheet

DirectRFQ

1.5SMC150CA

Taiwan Semiconductor CorporationIn Stock: 74881.5SMC150CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SM15T150CA-M3/9AT are qualified based on the following critical parameters:

• Voltage - Reverse Standoff (Typ): 128V
• Voltage - Clamping (Max) @ Ipp: 207V
• Package / Case: DO-214AB, SMC (surface mount)
• Bidirectional Channels: 1
• Type: Zener
• RoHS3 Compliance and MSL Level 1 rating

Parts meeting these specifications are electrically and mechanically interchangeable. Variations in peak pulse current (within acceptable design margins) and minor temperature range differences do not preclude substitution when the primary voltage suppression characteristics and physical packaging remain identical.

Parameter Comparison

Engineering Selection Recommendations

All three parts listed are active products with ROHS3 compliance and MSL Level 1 ratings, confirming their suitability for current production and long-term availability.

The 1.5SMC150CA-E3/9AT (Vishay) is a direct equivalent to the SM15T150CA-M3/9AT, matching all electrical parameters and operating temperature specifications. This part is recommended as the primary substitute when sourcing from the same manufacturer is preferred.

The 1.5SMC150CA (Taiwan Semiconductor Corporation) provides equivalent voltage suppression characteristics with a marginally higher peak pulse current rating of 7.6A compared to 7.2A. The operating temperature range is -55°C to 150°C, which is narrower at the lower end by 10°C. This part is suitable for applications where the lower temperature limit of -55°C meets design requirements.

Frequently Asked Questions (FAQ)

Q: Can 1.5SMC150CA-E3/9AT be used as a direct replacement for SM15T150CA-M3/9AT?

A: Yes. Both parts share identical voltage suppression parameters (128V standoff, 207V clamping), peak pulse power rating (1500W), and operating temperature range (-65°C to 150°C). The DO-214AB SMC package ensures mechanical and electrical interchangeability.

Q: What is the difference between the Vishay and Taiwan Semiconductor Corporation versions?

A: The primary differences are manufacturer origin and peak pulse current specification. The Taiwan Semiconductor version (1.5SMC150CA) provides 7.6A peak pulse current versus 7.2A for Vishay versions, and operates from -55°C instead of -65°C. Voltage suppression characteristics remain identical.

Q: Are all three parts suitable for the same circuit application?

A: Yes, provided the application does not require operation below -55°C. All three parts meet the same voltage suppression requirements and package specifications. Selection should be based on supply chain availability, cost, and temperature range requirements.

Q: Does the higher peak pulse current of the Taiwan Semiconductor part affect compatibility?

A: No. A higher peak pulse current rating indicates greater capability and does not compromise compatibility. The part remains suitable for applications designed for 7.2A specifications.

Q: What packaging format do these parts use?

A: All three parts use the DO-214AB SMC (Surface Mount Case) package, a standard surface mount configuration for TVS diodes. This ensures identical PCB footprint and reflow soldering compatibility.