SMF160AT1 Equivalent & Substitute Parts

Part Overview

The SMF160AT1 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 160V reverse standoff voltage with a 259V maximum clamping voltage and 700mA peak pulse current capability in a compact SOD-123F package.

The SMF160AT1 is classified as obsolete. Identifying qualified substitute parts is essential for ongoing design support, procurement continuity, and new production builds where this component is specified.

Substiute Parts

SMF160AT1

onsemiIn Stock: 922SMF160AT1 Datasheet

Current PartRFQ

SMF160A-TP

Micro Commercial CoIn Stock: 96479SMF160A-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMF160AT1 is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff: 160V (nominal)
• Voltage - Breakdown (Min): 178V
• Voltage - Clamping (Max) @ Ipp: 259V
• Current - Peak Pulse (10/1000µs): 700mA
• Power - Peak Pulse: 200W
• Package / Case: SOD-123F
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional (1 channel)

The SMF160A-TP manufactured by Micro Commercial Co meets all specified electrical parameters and maintains identical package and mounting characteristics. This part qualifies as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The SMF160A-TP is a qualified direct substitute for the obsolete SMF160AT1. Selection between these parts should be based on the following factors:

Product Status: The SMF160AT1 is obsolete and no longer supported by onsemi. The SMF160A-TP is active and maintains current manufacturing support from Micro Commercial Co.

Compliance & Certifications: The SMF160A-TP is RoHS3 compliant, whereas the SMF160AT1 is RoHS non-compliant. Both parts are REACH Unaffected and classified under ECCN EAR99.

Packaging: The SMF160A-TP is supplied in Tape & Reel (TR) format, which is standard for high-volume production. The SMF160AT1 packaging format is not specified in available data.

Inventory & Availability: The SMF160A-TP has significantly higher inventory availability (96,400 pcs) compared to the SMF160AT1 (840 pcs), supporting long-term procurement reliability.

Temperature Performance: The SMF160A-TP offers an extended operating temperature range (-65 to 175°C TA) compared to the SMF160AT1 (-55 to 150°C TJ), providing additional thermal margin in demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the SMF160A-TP be used as a direct replacement for the SMF160AT1 in existing designs?

A: Yes. The SMF160A-TP meets all electrical specifications (voltage, current, and power ratings) and maintains identical package and mounting characteristics. No circuit modifications are required.

Q: What are the key differences between these parts?

A: The primary differences are manufacturer (onsemi vs. Micro Commercial Co), product status (obsolete vs. active), RoHS compliance (non-compliant vs. RoHS3 compliant), and operating temperature range. Electrical performance is equivalent.

Q: Does the SMF160A-TP come in the same package as the SMF160AT1?

A: Yes. Both parts use the SOD-123F surface-mount package with identical pinout and footprint compatibility.

Q: Is the SMF160A-TP suitable for high-volume production?

A: Yes. The SMF160A-TP is supplied in Tape & Reel format and is actively manufactured, making it suitable for automated assembly and high-volume applications.

Q: Are there any compliance concerns when switching from SMF160AT1 to SMF160A-TP?

A: No. The SMF160A-TP is RoHS3 compliant and REACH Unaffected, meeting current regulatory requirements. The SMF160AT1 is RoHS non-compliant, which may present compliance issues in new designs.