STF12100 Equivalent & Substitute Parts

Part Overview

The STF12100 is a Schottky rectifier diode manufactured by SMC Diode Solutions, rated for 100V DC reverse voltage with 12A average rectified current in a through-hole TO-220-2 isolated tab package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

STF12100

SMC Diode SolutionsIn Stock: 1180STF12100 Datasheet

Current PartRFQ

STPS8H100FP

STMicroelectronicsIn Stock: 4455STPS8H100FP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STF12100 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) rating must equal or exceed 100V
• Technology classification must be Schottky
• Fast recovery speed characteristic (≤ 500ns, > 200mA)
• Forward voltage drop must be within acceptable operating margins
• Reverse leakage current must remain within circuit design tolerances

Mechanical Compatibility Criteria:

• Mounting type: Through Hole
• Package configuration: TO-220-2 Full Pack, Isolated Tab
• Pin configuration and thermal characteristics must support identical PCB layout

Regulatory and Compliance Criteria:

• RoHS3 compliance status
• ECCN and HTSUS classifications for supply chain consistency

The STPS8H100FP qualifies as a substitute based on matching voltage rating, Schottky technology, fast recovery speed, through-hole mounting, and TO-220-2 isolated tab package configuration. Current rating differences are noted in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

STF12100 (Primary Selection)

The STF12100 is the specified component for applications requiring 12A average rectified current at 100V reverse voltage. This part maintains Active product status with established supply availability (1131 pcs in stock) and full ROHS3 compliance. Selection of the primary part is appropriate when design specifications explicitly require 12A current capacity and supply chain access is confirmed.

STPS8H100FP (Substitute Selection)

The STPS8H100FP is suitable for applications where the 12A current requirement can be reduced to 8A without compromising circuit performance. This substitute maintains identical voltage rating (100V), Schottky technology classification, fast recovery speed characteristics, and through-hole TO-220-2 isolated tab package configuration. The STPS8H100FP demonstrates superior reverse leakage performance (4.5 µA versus 300 µA) and lower forward voltage drop (710 mV @ 8A versus 750 mV @ 12A). Both parts are ROHS3 compliant and Active status. The substitute part offers higher inventory availability (4423 pcs in stock) and extended maximum junction temperature rating (175°C). Selection of the STPS8H100FP is appropriate when circuit design permits 8A operation and supply chain access to the primary part is unavailable.

Frequently Asked Questions (FAQ)

Q: Can the STPS8H100FP directly replace the STF12100 in all applications?

A: Direct replacement is limited by current rating. The STPS8H100FP is rated for 8A average rectified current, while the STF12100 is rated for 12A. Substitution is valid only when the circuit design operates at or below 8A. Voltage rating, package configuration, and technology classification are identical, supporting mechanical and electrical compatibility at reduced current levels.

Q: Are the package dimensions identical between STF12100 and STPS8H100FP?

A: Both parts use TO-220-2 Full Pack with isolated tab configuration. Through-hole mounting characteristics are identical, supporting direct PCB layout compatibility without modification.

Q: What is the impact of the reverse leakage current difference?

A: The STPS8H100FP exhibits lower reverse leakage current (4.5 µA @ 100V) compared to the STF12100 (300 µA @ 100V). This difference may improve circuit performance in applications sensitive to leakage current, such as precision analog circuits or low-power standby modes.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the STF12100 and STPS8H100FP are ROHS3 compliant, supporting equivalent regulatory and environmental requirements.

Q: What is the forward voltage drop difference, and does it affect circuit design?

A: The STF12100 exhibits 750 mV forward voltage drop at 12A, while the STPS8H100FP exhibits 710 mV at 8A. At equivalent current levels below 8A, the STPS8H100FP typically demonstrates lower forward voltage drop, reducing power dissipation and improving efficiency in power conversion applications.

Q: Can the STPS8H100FP operate at the full temperature range of the STF12100?

A: The STPS8H100FP supports a maximum junction temperature of 175°C, exceeding the STF12100 maximum of 150°C. Both parts support the -55°C minimum operating temperature. The STPS8H100FP provides extended high-temperature capability.