US3DC-HF Equivalent & Substitute Parts

Part Overview

The US3DC-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 200 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the specified operating range, enabling direct replacement in circuit applications without design modification.

Substiute Parts

US3DC-HF

Comchip TechnologyIn Stock: 1063US3DC-HF Datasheet

Current PartRFQ

ES3DC-HF

Comchip TechnologyIn Stock: 698ES3DC-HF Datasheet

Parametric EquivalentRFQ

ES3DC

MDDIn Stock: 52065ES3DC Datasheet

Parametric EquivalentRFQ

UF3D_R1_00001

Panjit International Inc.In Stock: 2284UF3D_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the US3DC-HF are qualified based on the following critical parameters that determine functional equivalence:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 3 A
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 3 A
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 150°C
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Parameter Variations:

• Reverse Recovery Time (trr): Substitute parts may exhibit trr values of 35 ns or 50 ns, both within fast recovery classification
• Current - Reverse Leakage @ Vr: Substitute parts may range from 1 µA to 5 µA @ 200 V
• Capacitance @ Vr, F: Optional parameter; when specified, does not restrict substitution eligibility

All substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory and environmental compatibility with the primary part.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—ES3DC-HF, ES3DC, and UF3D_R1_00001—are qualified as direct functional equivalents to the US3DC-HF based on matching electrical ratings and mechanical specifications. Selection among these alternatives is determined by availability, supply chain requirements, and manufacturing source preference.

ES3DC-HF (Comchip Technology): Maintains identical manufacturer lineage to the primary part with improved reverse recovery time (35 ns versus 50 ns). Inventory availability: 655 pcs. ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

ES3DC (MDD): Offers the highest inventory availability at 52,041 pcs with equivalent electrical performance and 35 ns reverse recovery time. ROHS3 compliant and REACH Unaffected. Packaging designation not specified in source data.

UF3D_R1_00001 (Panjit International Inc.): Provides superior reverse leakage current performance (1 µA versus 5 µA @ 200 V) with 50 ns reverse recovery time matching the primary part. Inventory availability: 2,238 pcs. ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status.

All substitute parts are Active product status and maintain full compliance with ROHS3 environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can ES3DC-HF be used as a direct replacement for US3DC-HF?

A: Yes. ES3DC-HF meets all mandatory electrical parameters: 200 V reverse voltage, 3 A average rectified current, 1 V forward voltage at 3 A, and identical DO-214AB surface mount package. The 35 ns reverse recovery time is within the fast recovery classification and represents improved performance relative to the primary part's 50 ns specification.

Q: What is the difference between ES3DC and ES3DC-HF?

A: Both parts share identical electrical ratings and reverse recovery time (35 ns). The primary distinction is manufacturer designation; ES3DC-HF is the Comchip Technology variant with specified packaging as Tape & Reel (TR), while ES3DC is manufactured by MDD with unspecified packaging. Electrical substitution is equivalent.

Q: Does UF3D_R1_00001 offer any performance advantage over US3DC-HF?

A: UF3D_R1_00001 exhibits lower reverse leakage current (1 µA @ 200 V compared to 5 µA @ 200 V), which may reduce standby power dissipation in applications with sustained reverse bias. Reverse recovery time remains equivalent at 50 ns. All other electrical parameters are identical.

Q: Are all substitute parts available in Tape & Reel packaging?

A: ES3DC-HF and UF3D_R1_00001 are specified as Tape & Reel (TR) packaging. ES3DC packaging designation is not specified in available data. Confirm packaging requirements with supplier documentation prior to procurement.

Q: Do substitute parts maintain the same moisture sensitivity rating?

A: ES3DC-HF and UF3D_R1_00001 both specify Moisture Sensitivity Level 1 (Unlimited), matching the primary part. ES3DC moisture sensitivity data is not provided. Verify MSL classification with manufacturer documentation if moisture-sensitive handling procedures are required.

Q: Can these diodes be used interchangeably in high-frequency switching applications?

A: All parts are classified as fast recovery diodes with reverse recovery times between 35 ns and 50 ns, suitable for switching applications within the specified frequency range. Circuit performance depends on application-specific switching frequency and load characteristics. Verify reverse recovery time requirements against circuit design specifications.

Q: What is the significance of the DO-214AB package designation?

A: DO-214AB is the industry-standard surface mount package for general-purpose rectifier diodes rated in the 1 A to 3 A range. All substitute parts use identical package geometry and pin configuration, enabling direct PCB footprint compatibility without layout modification.