DSTF2045C Equivalent & Substitute Parts

Part Overview

The DSTF2045C is a Schottky diode array manufactured by Littelfuse Inc., configured as a 1 Pair Common Cathode rectifier with a maximum reverse voltage rating of 45 V and average rectified current of 10 A per diode. The component is housed in a TO-220-3 Full Pack with isolated tab through-hole package and is currently in active product status with 791 pieces in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement in circuit applications. Substitution becomes necessary due to component availability, supply chain considerations, or design flexibility requirements while maintaining functional compatibility.

Substiute Parts

DSTF2045C

Littelfuse Inc.In Stock: 816DSTF2045C Datasheet

Current PartRFQ

DSTF2045C

Littelfuse Inc.In Stock: 816DSTF2045C Datasheet

Parametric EquivalentRFQ

MBRF2545CT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1531MBRF2545CT-E3/45 Datasheet

MFR RecommendedRFQ

STF2045C

SMC Diode SolutionsIn Stock: 1870STF2045C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DSTF2045C are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 45 V maximum reverse voltage, 10 A average rectified current per diode, 580 mV forward voltage at 10 A, 2 mA reverse leakage current at 45 V, and -55°C to 150°C operating temperature range. These parts are direct functional replacements with no derating required.

Manufacturer Recommended Alternatives share the same package, mounting type, and reverse voltage rating but differ in current capacity and forward voltage characteristics. These parts operate within the same thermal and mechanical envelope but require circuit-level evaluation for current and power dissipation compatibility.

The following parameters determine substitution eligibility:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Package / Case: TO-220-3 Full Pack, Isolated Tab
• Mounting Type: Through Hole
• Voltage - DC Reverse (Vr) (Max): 45 V (minimum requirement)

Parameter Comparison

Engineering Selection Recommendations

STF2045C (SMC Diode Solutions) is a parametric equivalent to the DSTF2045C with identical electrical specifications and operating characteristics. Both components are ROHS3 compliant, feature MSL 1 rating, and operate across the same temperature range. The STF2045C is currently in active product status with 1782 pieces in stock. Selection of this substitute is based on equivalent performance parameters and active product availability. Note that the STF2045C carries REACH Affected status, whereas the DSTF2045C is REACH Unaffected; regulatory compliance verification is required for applications subject to REACH requirements.

MBRF2545CT-E3/45 (Vishay General Semiconductor - Diodes Division) is a manufacturer-recommended alternative with higher current capacity (12.5 A versus 10 A per diode) and lower reverse leakage current (200 µA versus 2 mA at 45 V). This component shares identical package, mounting type, and reverse voltage rating. The MBRF2545CT-E3/45 is ROHS3 compliant, REACH Unaffected, and currently in active product status with 1427 pieces in stock. The extended operating temperature range (-65°C to 150°C versus -55°C to 150°C) provides additional thermal margin. Selection of this substitute is appropriate for applications requiring higher current capacity or lower leakage characteristics within the same mechanical footprint. Forward voltage characteristics differ at higher current levels and require circuit evaluation.

All substitute parts maintain through-hole TO-220-3 Full Pack with isolated tab packaging, ensuring mechanical and thermal interface compatibility with the original DSTF2045C design.

Frequently Asked Questions (FAQ)

Q: Can the STF2045C directly replace the DSTF2045C without circuit modification?

A: Yes. The STF2045C maintains identical electrical specifications including 45 V reverse voltage, 10 A average rectified current per diode, 580 mV forward voltage at 10 A, and 2 mA reverse leakage current at 45 V. Both components feature identical package and mounting configuration. Direct substitution is supported without circuit modification. REACH compliance status differs between the two parts; regulatory verification is required for applications subject to REACH requirements.

Q: What are the key differences between the DSTF2045C and MBRF2545CT-E3/45?

A: The MBRF2545CT-E3/45 provides higher current capacity (12.5 A versus 10 A per diode) and significantly lower reverse leakage current (200 µA versus 2 mA at 45 V). Forward voltage is specified at a higher current level (820 mV @ 30 A versus 580 mV @ 10 A). Operating temperature range extends to -65°C on the lower end. Both components share identical 45 V reverse voltage rating, TO-220-3 package, and fast recovery speed characteristics. The MBRF2545CT-E3/45 is suitable for applications requiring enhanced current handling or reduced leakage performance within the same mechanical envelope.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The DSTF2045C, STF2045C, and MBRF2545CT-E3/45 are all ROHS3 compliant. Moisture sensitivity level is 1 (Unlimited) for all three components, indicating no special moisture control requirements during storage or handling.

Q: What is the significance of REACH status differences?

A: The DSTF2045C and MBRF2545CT-E3/45 are REACH Unaffected, indicating no REACH substance of concern restrictions apply. The STF2045C is REACH Affected, meaning it may contain substances subject to REACH regulations. Applications subject to REACH compliance requirements must verify regulatory status before component selection.

Q: Can the MBRF2545CT-E3/45 be used in circuits designed for 10 A operation?

A: Yes. The MBRF2545CT-E3/45 is rated for 12.5 A average rectified current per diode, which exceeds the 10 A requirement of the original DSTF2045C design. Operation at 10 A is within the MBRF2545CT-E3/45 specification envelope. However, forward voltage characteristics differ; circuit-level power dissipation analysis is required to confirm thermal performance equivalence.

Q: Are the mechanical interfaces identical across all three parts?

A: Yes. All three components feature TO-220-3 Full Pack with isolated tab through-hole packaging. Mounting footprint, lead configuration, and thermal interface characteristics are identical, enabling direct mechanical substitution without PCB modification.

Q: What inventory levels are available for each substitute part?

A: DSTF2045C (Littelfuse) has 791 pieces in stock. STF2045C (SMC Diode Solutions) has 1782 pieces in stock. MBRF2545CT-E3/45 (Vishay) has 1427 pieces in stock. All components are listed as new original stock in active product status.