STF701.TCT Equivalent & Substitute Parts

Part Overview

The STF701.TCT is a Transient Voltage Suppressors (TVS) device manufactured by Semtech Corporation, designed for circuit protection applications. It features mixed technology in a 5-TSSOP (SC-70-5, SOT-353) surface mount package with 2 circuits for general purpose transient suppression. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement.

Substiute Parts

STF701.TCT

Semtech CorporationIn Stock: 10240STF701.TCT Datasheet

Current PartRFQ

EMIF01-10005W5

STMicroelectronicsIn Stock: 37309EMIF01-10005W5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STF701.TCT is based on the following critical parameters that must align between the original and substitute component:

• Package Compatibility: Both parts must use the 5-TSSOP (SC-70-5, SOT-353) surface mount package to ensure PCB footprint compatibility
• Circuit Count: The substitute must provide 2 circuits to match the original configuration
• Mounting Type: Surface mount technology must be maintained
• Moisture Sensitivity: MSL rating of 1 (Unlimited) ensures equivalent handling and storage requirements
• Regulatory Compliance: ECCN classification and RoHS/REACH status must be compatible with the application environment

The identified substitute, EMIF01-10005W5 from STMicroelectronics, meets these core substitution criteria through identical package specifications and circuit configuration.

Parameter Comparison

Engineering Selection Recommendations

The EMIF01-10005W5 serves as a direct substitute for the obsolete STF701.TCT based on matching package geometry, circuit configuration, and regulatory classification. The substitute component is currently in active production status, ensuring long-term availability and supply chain continuity. Both components share identical MSL ratings and ECCN classifications, eliminating compliance concerns for substitution.

The EMIF01-10005W5 carries ROHS3 compliance certification, which provides enhanced environmental compliance compared to the original part specification. The component maintains the same 5-TSSOP surface mount package with verified dimensional specifications (2.00mm x 1.25mm x 1.09mm), confirming PCB footprint and assembly compatibility.

Frequently Asked Questions (FAQ)

Q: Can EMIF01-10005W5 be used as a direct replacement for STF701.TCT?

A: Yes. Both components share identical package specifications (5-TSSOP, SC-70-5, SOT-353), circuit count (2), and mounting type (surface mount). The substitute is qualified for direct PCB substitution without layout modifications.

Q: What is the primary reason for substitution?

A: The STF701.TCT is classified as obsolete. The EMIF01-10005W5 is in active production, providing assured supply availability and manufacturing continuity.

Q: Are there any compliance differences between the original and substitute?

A: Both components carry EAR99 ECCN classification and MSL 1 (Unlimited) ratings. The EMIF01-10005W5 includes ROHS3 compliance certification, which exceeds the original specification and is compatible with modern manufacturing and environmental standards.

Q: Do the physical dimensions match?

A: Yes. The EMIF01-10005W5 dimensions are 2.00mm L x 1.25mm W x 1.09mm H, confirming compatibility with the 5-TSSOP package footprint used by the original STF701.TCT.

Q: What is the moisture sensitivity level for both parts?

A: Both the STF701.TCT and EMIF01-10005W5 carry MSL 1 (Unlimited) ratings, indicating identical moisture handling and storage requirements throughout the component lifecycle.