1SMB6.0AT3 Equivalent & Substitute Parts

Part Overview

The 1SMB6.0AT3 is a transient voltage suppressor (TVS) diode manufactured by onsemi, rated at 6V reverse standoff with 10.3V maximum clamping voltage in SMB (DO-214AA) surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a wide temperature range and provides general-purpose transient protection in compact surface mount form factor.

Substiute Parts

1SMB6.0AT3

onsemiIn Stock: 46191SMB6.0AT3 Datasheet

Current PartRFQ

SMBJ6.0A

EVVO SemiIn Stock: 198190SMBJ6.0A Datasheet

DirectRFQ

SMBJ6.0A

EVVO SemiIn Stock: 198190SMBJ6.0A Datasheet

DirectRFQ

SMBJ6.0A-TR

STMicroelectronicsIn Stock: 5138SMBJ6.0A-TR Datasheet

DirectRFQ

PTVS6V0P1UP,115

Nexperia USA Inc.In Stock: 4461PTVS6V0P1UP,115 Datasheet

SimilarRFQ

SMBJ6.0A-13-F

Diodes IncorporatedIn Stock: 10117SMBJ6.0A-13-F Datasheet

SimilarRFQ

SMBJ6.0A-TP

Micro Commercial CoIn Stock: 7112SMBJ6.0A-TP Datasheet

SimilarRFQ

TV06B6V0JB-G

Comchip TechnologyIn Stock: 1214TV06B6V0JB-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1SMB6.0AT3 are qualified based on the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 6V
• Voltage - Clamping (Max) @ Ipp: 10.3V
• Power - Peak Pulse: 600W
• Package / Case: SMB (DO-214AA) or functionally equivalent surface mount packages
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitutes are grouped into two categories:

Direct Substitutes (SMB Package): Parts maintaining identical electrical specifications and SMB packaging, including SMBJ6.0A variants from multiple manufacturers (EVVO Semi, STMicroelectronics, Diodes Incorporated, Micro Commercial Co).

Functional Equivalent (Alternative Package): PTVS6V0P1UP,115 from Nexperia USA Inc., which maintains identical electrical specifications but uses SOD-128 packaging. This part is suitable only where PCB layout and assembly processes accommodate SOD-128 form factor.

Bidirectional Variant: TV06B6V0JB-G from Comchip Technology provides bidirectional TVS functionality with equivalent electrical ratings in SMB packaging.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs)

SMBJ6.0A variants from EVVO Semi, STMicroelectronics (SMBJ6.0A-TR), Diodes Incorporated (SMBJ6.0A-13-F), and Micro Commercial Co (SMBJ6.0A-TP) are active products with ROHS3 compliance. These parts maintain identical electrical specifications and SMB packaging, ensuring direct PCB compatibility. STMicroelectronics SMBJ6.0A-TR offers the highest peak pulse current rating at 61A and extended temperature range to 150°C. All primary substitutes carry REACH Unaffected status and EAR99 classification.

Alternative for Automotive Applications

PTVS6V0P1UP,115 from Nexperia USA Inc. is qualified to AEC-Q101 automotive standard with identical electrical performance. This part is suitable only where SOD-128 packaging is accommodated in PCB design and assembly processes. Product status is discontinued at DiGi Electronics; verify availability through alternative distribution channels.

Bidirectional Option

TV06B6V0JB-G from Comchip Technology provides bidirectional TVS functionality with equivalent electrical ratings in SMB packaging. This part is suitable for applications requiring bidirectional transient suppression on the same pin.

Compliance Consideration

The original 1SMB6.0AT3 is RoHS non-compliant. All recommended substitutes are ROHS3 compliant, meeting current regulatory requirements for new production and design implementations.

Frequently Asked Questions (FAQ)

Q: Can SMBJ6.0A variants be used as direct replacements for 1SMB6.0AT3?

A: Yes. SMBJ6.0A parts from EVVO Semi, STMicroelectronics, Diodes Incorporated, and Micro Commercial Co maintain identical reverse standoff voltage (6V), clamping voltage (10.3V), and power rating (600W) in the same SMB package. PCB layout and assembly processes require no modification.

Q: What is the difference between unidirectional and bidirectional TVS diodes?

A: Unidirectional TVS diodes (SMBJ6.0A variants) suppress transients in one direction only and are used for single-ended signal protection. Bidirectional TVS diodes (TV06B6V0JB-G) suppress transients in both directions and are used for differential signal lines or bidirectional data buses. Selection depends on circuit topology and transient source direction.

Q: Is PTVS6V0P1UP,115 a suitable substitute?

A: PTVS6V0P1UP,115 maintains identical electrical specifications and is AEC-Q101 qualified for automotive applications. However, it uses SOD-128 packaging instead of SMB. This part is suitable only if PCB layout and assembly equipment support SOD-128 form factor. Verify availability, as this part is discontinued at DiGi Electronics.

Q: What are the key differences between substitute manufacturers?

A: All recommended SMBJ6.0A variants meet the same electrical specifications. STMicroelectronics SMBJ6.0A-TR offers the highest peak pulse current (61A) and operates to 150°C junction temperature. Micro Commercial Co SMBJ6.0A-TP extends to 175°C junction temperature. EVVO Semi and Diodes Incorporated variants operate to 150°C. Selection may depend on thermal requirements and supply chain availability.

Q: Are all substitutes RoHS compliant?

A: All recommended active substitutes are ROHS3 compliant. The original 1SMB6.0AT3 is RoHS non-compliant. For new designs and production, ROHS3-compliant substitutes are required to meet current regulatory standards.

Q: What is the MSL rating and why does it matter?

A: All parts listed carry MSL 1 (Unlimited), indicating no moisture sensitivity. These components do not require special moisture control during storage, handling, or assembly, simplifying supply chain and manufacturing processes.