DSTF20120C Equivalent & Substitute Parts

Part Overview

The DSTF20120C is a Schottky diode array manufactured by Littelfuse Inc., configured as 1 pair common cathode with 120 V reverse voltage rating and 10 A average rectified current per diode. This component is packaged in TO-220-3 with isolated tab and is classified as Active product status. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory availability, or performance optimization within specified electrical and mechanical parameters.

Substiute Parts

DSTF20120C

Littelfuse Inc.In Stock: 850DSTF20120C Datasheet

Current PartRFQ

SDT20120CTFP

Diodes IncorporatedIn Stock: 798SDT20120CTFP Datasheet

MFR RecommendedRFQ

SDT30120CTFP

Diodes IncorporatedIn Stock: 2012SDT30120CTFP Datasheet

MFR RecommendedRFQ

VF20120C-E3/4W

Vishay General Semiconductor - Diodes DivisionIn Stock: 28428VF20120C-E3/4W Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DSTF20120C are classified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Parameters for Substitution:

• Diode configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 120 V
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack, Isolated Tab

Substitution Categories:

MFR Recommended Substitutes maintain identical or superior electrical performance within the specified parameter range. These parts are directly interchangeable with the main part number.

Parametric Equivalents satisfy all critical electrical and mechanical requirements but may exhibit minor variations in secondary parameters such as reverse leakage current or forward voltage characteristics within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

SDT20120CTFP (Diodes Incorporated) is classified as MFR Recommended substitute. This part maintains identical current rating (10 A) and voltage specifications (120 V) with improved reverse leakage characteristics (80 µA vs. 700 µA). Forward voltage is marginally lower (880 mV vs. 900 mV at 10 A), indicating superior efficiency. All compliance certifications (ROHS3, REACH Unaffected) and package specifications are identical. This part is suitable for direct replacement in applications where the DSTF20120C is specified.

SDT30120CTFP (Diodes Incorporated) is classified as MFR Recommended substitute with enhanced current capability. This part is rated for 15 A average rectified current per diode, exceeding the 10 A requirement of the main part. Reverse voltage rating remains 120 V. Forward voltage at rated current (930 mV @ 15 A) is within acceptable tolerance. This part is suitable for applications requiring higher current capacity or where thermal margin improvement is beneficial. All compliance certifications and package specifications are identical.

VF20120C-E3/4W (Vishay General Semiconductor - Diodes Division) is classified as Parametric Equivalent. This part maintains identical electrical specifications (10 A, 120 V, 900 mV forward voltage) and package configuration. Reverse leakage current matches the main part (700 µA @ 120 V). Operating temperature range is -40°C to 150°C, which is narrower than the main part (-55°C to 150°C) by 15°C at the lower bound. This part is suitable for applications where the lower temperature limit of -40°C is acceptable. All compliance certifications are identical.

All substitute parts are Active product status and ROHS3 compliant, ensuring regulatory compliance and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can SDT20120CTFP be used as a direct replacement for DSTF20120C?

A: Yes. SDT20120CTFP maintains identical diode configuration (1 pair common cathode), voltage rating (120 V), current rating (10 A), package (TO-220-3 Full Pack, Isolated Tab), and mounting type (Through Hole). Forward voltage and reverse leakage characteristics are within acceptable engineering tolerance. All compliance certifications are equivalent.

Q: What is the advantage of using SDT30120CTFP instead of DSTF20120C?

A: SDT30120CTFP provides 15 A average rectified current per diode compared to 10 A in DSTF20120C. This higher current rating allows operation at higher current levels or provides thermal margin in existing designs. All other electrical and mechanical parameters remain compatible. This part is suitable when current capacity upgrade is required without changing the package or configuration.

Q: Is VF20120C-E3/4W compatible with DSTF20120C?

A: VF20120C-E3/4W is compatible for applications where the operating temperature range of -40°C to 150°C is acceptable. The main part DSTF20120C operates from -55°C to 150°C. All other electrical specifications (10 A, 120 V, 900 mV forward voltage) and package configuration are identical. If operation below -40°C is required, VF20120C-E3/4W is not suitable.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use TO-220-3 Full Pack with Isolated Tab package. Pin configuration and mechanical dimensions are identical, ensuring direct PCB compatibility without layout modifications.

Q: What is the difference in reverse leakage current between the parts?

A: DSTF20120C and VF20120C-E3/4W both exhibit 700 µA reverse leakage at 120 V. SDT20120CTFP shows 80 µA, and SDT30120CTFP shows 100 µA at 120 V. Lower reverse leakage reduces standby power dissipation and improves circuit efficiency. Selection depends on application requirements for leakage current performance.

Q: Are all parts RoHS3 compliant?

A: Yes. DSTF20120C, SDT20120CTFP, SDT30120CTFP, and VF20120C-E3/4W are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.