SMF160AT1G Equivalent & Substitute Parts

Part Overview

The SMF160AT1G is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection applications. This component features a 160V reverse standoff voltage with a 259V maximum clamping voltage and 700mA peak pulse current capability in a surface-mount SOD-123F package.

The SMF160AT1G is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

SMF160AT1G

onsemiIn Stock: 2180SMF160AT1G Datasheet

Current PartRFQ

SMF160A-TP

Micro Commercial CoIn Stock: 96479SMF160A-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMF160AT1G is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff: 160V (nominal)
• Voltage - Breakdown: 178V (minimum)
• Voltage - Clamping: 259V (maximum at Ipp)
• Current - Peak Pulse: 700mA
• Power - Peak Pulse: 200W
• Type: Zener, unidirectional
• Package: SOD-123F surface mount

The SMF160A-TP manufactured by Micro Commercial Co meets all specified electrical parameters and package requirements, making it a direct functional equivalent for the obsolete SMF160AT1G.

Parameter Comparison

Engineering Selection Recommendations

The SMF160A-TP is the direct substitute for the obsolete SMF160AT1G. Both components are electrically and mechanically identical across all specified parameters. The SMF160A-TP offers the following advantages:

• Active product status ensures ongoing availability and supply chain support
• ROHS3 compliance meets current environmental and regulatory requirements
• Tape & Reel packaging supports automated assembly processes
• Identical electrical performance and thermal characteristics
• MSL 1 rating provides unlimited shelf life storage

No design modifications are required when transitioning from SMF160AT1G to SMF160A-TP. Direct PCB footprint compatibility is maintained.

Frequently Asked Questions (FAQ)

Q: Can SMF160A-TP be used as a direct replacement for SMF160AT1G?

A: Yes. Both components share identical electrical specifications (160V standoff, 259V clamping, 700mA peak pulse current, 200W peak power) and the same SOD-123F surface-mount package. No circuit modifications are necessary.

Q: What is the difference between the two parts?

A: The primary differences are product status and packaging. SMF160AT1G is obsolete; SMF160A-TP is active. SMF160A-TP is supplied in Tape & Reel format and carries ROHS3 compliance certification. Electrical and thermal performance are equivalent.

Q: Are there any temperature range differences?

A: The SMF160AT1G specifies -55°C to 150°C (junction temperature). The SMF160A-TP specifies -65°C to 175°C (ambient temperature). The SMF160A-TP provides a wider operating range, making it suitable for more demanding thermal environments.

Q: Is the SOD-123F package identical between both parts?

A: Yes. Both components use the SOD-123F surface-mount package with identical pinout, footprint, and mechanical dimensions. PCB layout changes are not required.

Q: What is the MSL rating for these components?

A: Both parts carry MSL 1 (Unlimited), indicating unlimited shelf life storage without moisture bake-out requirements prior to assembly.