SMF16AT1G Equivalent & Substitute Parts

Part Overview

The SMF16AT1G is a unidirectional transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection applications. This component features a 16V reverse standoff voltage with a 26V maximum clamping voltage and 7.7A peak pulse current capability in a surface-mount SOD-123FL package. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

SMF16AT1G

onsemiIn Stock: 20322SMF16AT1G Datasheet

Current PartRFQ

SMF16A

MDDIn Stock: 20966SMF16A Datasheet

DirectRFQ

SMF16A-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 3453SMF16A-E3-08 Datasheet

DirectRFQ

SMF16A-T13

Littelfuse Inc.In Stock: 19456SMF16A-T13 Datasheet

DirectRFQ

SMF16A-TP

Micro Commercial CoIn Stock: 2252SMF16A-TP Datasheet

DirectRFQ

SMF11A

MDDIn Stock: 17334SMF11A Datasheet

SimilarRFQ

SMF12A

MDDIn Stock: 26418SMF12A Datasheet

SimilarRFQ

SMF13A

Diotec SemiconductorIn Stock: 20101SMF13A Datasheet

SimilarRFQ

SMF15A

MDDIn Stock: 29220SMF15A Datasheet

SimilarRFQ

SMF17A

Diotec SemiconductorIn Stock: 2034SMF17A Datasheet

SimilarRFQ

SMF18A

MDDIn Stock: 20944SMF18A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF16AT1G are classified into two categories based on electrical parameter alignment:

Direct Substitutes maintain identical electrical specifications: 16V reverse standoff voltage, 17.8V minimum breakdown voltage, 26V maximum clamping voltage, and 7.7A peak pulse current. These parts are functionally interchangeable within the same circuit application. Package compatibility (SOD-123F or equivalent SMF footprint) and product status (active vs. obsolete) are secondary considerations for direct substitution.

Similar Substitutes share the same 200W peak pulse power rating and general-purpose TVS application category but operate at different voltage levels (11V to 18V standoff range). These parts are suitable only when circuit voltage requirements permit deviation from the original 16V specification.

The key parameters determining substitution eligibility are:

• Voltage - Reverse Standoff (Typ)
• Voltage - Clamping (Max) @ Ipp
• Current - Peak Pulse (10/1000µs)
• Package / Case compatibility
• Unidirectional channel configuration

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Recommended Priority)

SMF16A-T13 (Littelfuse Inc.) and SMF16A-TP (Micro Commercial Co) are the primary direct substitutes, offering identical electrical specifications with active product status and RoHS3 compliance. Both are available in SOD-123F packaging, ensuring mechanical compatibility with existing PCB layouts. SMF16A (MDD) provides an alternative direct substitute with active status and RoHS3 compliance, available in both SOD-123F and SMF package variants.

SMF16A-E3-08 (Vishay General Semiconductor - Diodes Division) is a direct electrical substitute with active status and RoHS3 compliance. This part uses DO-219AB (SMF) packaging, which is mechanically compatible with standard SMF footprints but requires verification of PCB pad layout compatibility before implementation.

Similar Substitutes (Conditional Use)

SMF15A, SMF17A, SMF13A, SMF12A, and SMF11A are suitable only when circuit design permits operation at alternative voltage levels. These parts maintain the 200W peak pulse power rating and general-purpose TVS application category but operate outside the 16V standoff specification. Selection among these alternatives depends on the specific overvoltage protection threshold required by the application.

All substitute parts listed carry RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can SMF16A-E3-08 be used as a direct replacement for SMF16AT1G?

A: Yes. SMF16A-E3-08 matches all critical electrical parameters: 16V standoff voltage, 17.8V breakdown voltage, 26V clamping voltage, and 7.7A peak pulse current. The DO-219AB (SMF) package is mechanically compatible with standard SMF footprints. Verify PCB pad layout compatibility before assembly.

Q: What is the difference between SMF16A-T13 and SMF16A-TP?

A: Both parts are direct electrical equivalents with identical 16V standoff, 26V clamping, and 7.7A peak pulse specifications. SMF16A-T13 is manufactured by Littelfuse Inc., while SMF16A-TP is manufactured by Micro Commercial Co. Both use SOD-123F packaging and carry active product status with RoHS3 compliance.

Q: Can I use SMF15A or SMF17A instead of SMF16AT1G?

A: Only if circuit design permits operation at alternative voltage thresholds. SMF15A operates at 15V standoff (24.4V clamping), while SMF17A operates at 17V standoff (27.6V clamping). These are not direct substitutes and should only be selected when the application voltage requirement differs from the original 16V specification.

Q: Are all substitute parts available in the same package as the original?

A: Most direct substitutes (SMF16A-T13, SMF16A-TP, SMF16A) are available in SOD-123F packaging, matching the original SMF16AT1G. SMF16A-E3-08 uses DO-219AB (SMF) packaging, which is footprint-compatible but requires PCB layout verification. Similar substitutes (SMF11A through SMF18A) are available in SOD-123F or SMF/SOD-123FL variants.

Q: What compliance certifications apply to substitute parts?

A: All listed substitute parts carry RoHS3 compliance and REACH unaffected status. Direct substitutes (SMF16A, SMF16A-E3-08, SMF16A-T13, SMF16A-TP) are confirmed RoHS3 compliant. Similar substitutes (SMF11A, SMF12A, SMF15A, SMF18A) are RoHS3 compliant; SMF13A and SMF17A carry RoHS3 compliance with REACH information available upon request.