US2D-HF General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The US2D-HF is an active general purpose rectifier diode manufactured by Comchip Technology, rated for 200V DC reverse voltage and 2A average rectified current in a surface mount DO-214AC (SMA) package. This component is designed for standard rectification applications requiring fast recovery characteristics. The part is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1) and is currently in active production status with 863 pieces available in inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical parameters including voltage rating, current capacity, package type, and thermal operating range. Identifying qualified substitutes ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

US2D-HF

Comchip TechnologyIn Stock: 951US2D-HF Datasheet

Current PartRFQ

ES2D-HF

Comchip TechnologyIn Stock: 10256ES2D-HF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the US2D-HF are qualified based on strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 200V minimum
• Current - Average Rectified (Io): 2A minimum
• Voltage - Forward (Vf) (Max) @ If: 1V maximum at 2A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 5µA maximum at 200V
• Operating Temperature - Junction: -55°C to 150°C minimum range

Mechanical Equivalence Criteria:

• Package / Case: DO-214AC (SMA) surface mount
• Mounting Type: Surface Mount

Compliance Equivalence Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The ES2D-HF meets all electrical, mechanical, and compliance requirements for direct substitution with the US2D-HF. Both parts share identical voltage ratings, current capacity, package configuration, and thermal operating range. The ES2D-HF demonstrates improved reverse recovery time (35ns versus 50ns) and includes specified junction capacitance (40pF @ 4V, 1MHz), representing enhanced performance characteristics within the same functional category.

Parameter Comparison

Engineering Selection Recommendations

US2D-HF Selection: The US2D-HF is appropriate for applications where component availability from existing inventory is prioritized. The part maintains active production status with RoHS3 compliance and unlimited moisture sensitivity level, supporting standard manufacturing and assembly processes. Current inventory of 863 pieces supports immediate procurement requirements.

ES2D-HF Selection: The ES2D-HF is appropriate for applications where improved reverse recovery time performance is beneficial. The 35ns reverse recovery time (versus 50ns for US2D-HF) reduces switching losses in high-frequency rectification circuits. The ES2D-HF maintains identical voltage, current, and thermal ratings with full RoHS3 compliance and unlimited MSL. Higher inventory availability (10,204 pieces) supports extended production runs and supply chain continuity. The ES2D-HF includes specified junction capacitance data (40pF @ 4V, 1MHz), providing additional design documentation for frequency-dependent applications.

Both parts are manufactured by Comchip Technology and share identical electrical specifications for voltage and current ratings, forward voltage characteristics, and operating temperature range. Selection between these parts is determined by reverse recovery time requirements, inventory availability, and design documentation completeness rather than functional incompatibility.

Frequently Asked Questions (FAQ)

Q: Can ES2D-HF replace US2D-HF in existing circuit designs?

A: Yes. The ES2D-HF meets or exceeds all electrical specifications of the US2D-HF across voltage rating (200V), current capacity (2A), forward voltage (1V @ 2A), and operating temperature range (-55°C to 150°C). Both parts use identical DO-214AC (SMA) surface mount packaging. The ES2D-HF demonstrates improved reverse recovery time (35ns versus 50ns), which represents enhanced performance within the same functional category.

Q: What is the difference in reverse recovery time between these parts?

A: The US2D-HF specifies 50ns reverse recovery time, while the ES2D-HF specifies 35ns. Both parts meet the fast recovery classification (≤ 500ns, > 200mA). The 15ns difference reduces switching losses in high-frequency applications. For low-frequency rectification circuits, this difference has negligible impact on circuit performance.

Q: Are both parts RoHS3 compliant?

A: Yes. Both US2D-HF and ES2D-HF are RoHS3 compliant with unlimited moisture sensitivity level (MSL 1), supporting standard manufacturing and assembly processes without special handling requirements.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Both parts use identical DO-214AC (SMA) surface mount packaging and mounting type. PCB footprints, solder reflow profiles, and assembly processes are identical. No design modifications are required for substitution.

Q: Which part should be selected for new designs?

A: Selection is based on application requirements and supply chain considerations. The ES2D-HF offers improved reverse recovery time performance and higher inventory availability. The US2D-HF is appropriate when existing design validation or component qualification is already established. Both parts maintain active production status and full compliance certifications.

Q: What is the significance of the junction capacitance specification in ES2D-HF?

A: The ES2D-HF specifies junction capacitance (40pF @ 4V, 1MHz), providing design documentation for frequency-dependent applications. This parameter is not specified for US2D-HF. For applications where junction capacitance affects circuit performance, the ES2D-HF provides complete design data.

Q: Are there any thermal or reliability differences between these parts?

A: Both parts share identical operating temperature range (-55°C to 150°C) and reverse leakage current specifications (5µA @ 200V). No thermal or reliability differences are specified between the parts. Both are manufactured by Comchip Technology with identical RoHS3 compliance and MSL 1 ratings.