DSTF4050C Equivalent & Substitute Parts

Part Overview

The DSTF4050C is a Schottky diode array manufactured by Littelfuse Inc., configured as a 1 Pair Common Cathode rectifier with a maximum reverse voltage rating of 50 V and average rectified current of 20A per diode. The device is packaged in a TO-220-3 Full Pack with isolated tab for through-hole mounting applications. This part is Active in product status and RoHS3 compliant.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits operation within relaxed electrical parameters while maintaining functional compatibility and mechanical interchangeability.

Substiute Parts

DSTF4050C

Littelfuse Inc.In Stock: 1048DSTF4050C Datasheet

Current PartRFQ

DSTF4050C

Littelfuse Inc.In Stock: 1048DSTF4050C Datasheet

Parametric EquivalentRFQ

MBRF2545CT-E3/45

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DSTF4050C is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Compatibility Criteria:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack, Isolated Tab
• Supplier Device Package: ITO-220AB

Electrical Parameter Constraints:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 50 V
• Current - Average Rectified (Io) (per Diode): Must equal or exceed 20A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: Must encompass -55°C to 150°C range

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must satisfy all mandatory criteria and maintain electrical performance at or above the specified ratings. Parts with lower voltage or current ratings do not qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

DSTF4050C (Littelfuse Inc.) - Primary Selection

The DSTF4050C is the recommended primary component. It is Active in product status with 970 units in stock. The part is RoHS3 compliant and REACH unaffected. All electrical parameters meet the specified design requirements with 50 V reverse voltage and 20A average rectified current per diode.

MBRF2545CT-E3/45 (Vishay General Semiconductor - Diodes Division) - Conditional Substitute

The MBRF2545CT-E3/45 shares identical mechanical packaging (TO-220-3 Full Pack, Isolated Tab, ITO-220AB) and diode configuration (1 Pair Common Cathode Schottky). However, this part exhibits reduced electrical ratings: 45 V maximum reverse voltage (versus 50 V) and 12.5A average rectified current per diode (versus 20A). The MBRF2545CT-E3/45 is suitable only for applications where the circuit design operates below these reduced thresholds. This part is Active in product status with 1427 units in stock and is RoHS3 compliant.

Selection between these parts depends on circuit voltage and current requirements. The DSTF4050C is appropriate for designs requiring the full 50 V and 20A ratings. The MBRF2545CT-E3/45 is appropriate only when circuit operation is constrained to 45 V maximum and 12.5A maximum per diode.

Frequently Asked Questions (FAQ)

Q: Can the MBRF2545CT-E3/45 be used as a direct replacement for the DSTF4050C?

A: The MBRF2545CT-E3/45 is mechanically interchangeable due to identical TO-220-3 Full Pack, Isolated Tab packaging. However, it is not an electrical equivalent. The MBRF2545CT-E3/45 has reduced voltage (45 V vs. 50 V) and current (12.5A vs. 20A) ratings. Use this part only if your circuit design operates within these lower limits.

Q: What are the critical parameters for substitution?

A: Substitution requires matching: diode configuration (1 Pair Common Cathode), technology (Schottky), mounting type (Through Hole), package (TO-220-3 Full Pack, Isolated Tab), and supplier device package (ITO-220AB). Electrical parameters must meet or exceed the original specifications: 50 V reverse voltage, 20A average rectified current, and fast recovery speed ≤ 500ns.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the DSTF4050C and MBRF2545CT-E3/45 are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both are REACH unaffected.

Q: What is the difference in forward voltage drop between these parts?

A: The DSTF4050C specifies 600 mV maximum forward voltage at 200A. The MBRF2545CT-E3/45 specifies 820 mV maximum forward voltage at 30A. These measurements are taken at different current levels and cannot be directly compared without additional circuit analysis.

Q: Can I use the MBRF2545CT-E3/45 in a 50V application?

A: No. The MBRF2545CT-E3/45 has a maximum reverse voltage rating of 45 V. Using this part in a 50V application exceeds its voltage specification and may result in device failure or reduced reliability.

Q: What is the operating temperature range for each part?

A: The DSTF4050C operates from -55°C to 150°C junction temperature. The MBRF2545CT-E3/45 operates from -65°C to 150°C junction temperature. The MBRF2545CT-E3/45 has an extended lower temperature range.

Q: Are there inventory considerations for these parts?

A: The DSTF4050C has 970 units in stock. The MBRF2545CT-E3/45 has 1427 units in stock. Both are available as new original components in tube packaging.