US2B-HF Equivalent & Substitute Parts

Part Overview

The US2B-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 100 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set, enabling design flexibility and supply chain continuity.

Substiute Parts

US2B-HF

Comchip TechnologyIn Stock: 801US2B-HF Datasheet

Current PartRFQ

ES2B-HF

Comchip TechnologyIn Stock: 3035ES2B-HF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the US2B-HF is determined by equivalence across the following critical parameters:

• Voltage Rating: DC reverse voltage must equal 100 V
• Current Rating: Average rectified current must equal 2 A
• Forward Voltage Drop: Maximum forward voltage at 2 A must not exceed 1 V
• Speed Classification: Fast recovery characteristic with reverse recovery time ≤ 500 ns
• Package Type: Surface mount DO-214AC (SMA) package required for mechanical and thermal compatibility
• Operating Temperature Range: Junction temperature range must span -55°C to 150°C
• Compliance: RoHS3 compliance and MSL 1 rating required

The ES2B-HF meets all substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the US2B-HF and ES2B-HF are Active product status components manufactured by Comchip Technology with identical RoHS3 compliance and MSL 1 ratings. The ES2B-HF exhibits a lower reverse recovery time (35 ns versus 50 ns), which represents improved switching performance while maintaining all other electrical and mechanical specifications. Both components are suitable for general-purpose rectification applications requiring 100 V, 2 A operation in surface mount form factor. Selection between these parts may be based on inventory availability, lead time, or application-specific switching speed requirements within the fast recovery classification.

Frequently Asked Questions (FAQ)

Q: Can the ES2B-HF directly replace the US2B-HF in existing designs?

A: Yes. The ES2B-HF maintains electrical equivalence across all critical parameters: 100 V reverse voltage rating, 2 A average rectified current, 1 V maximum forward voltage drop at 2 A, fast recovery speed classification, and identical DO-214AC (SMA) package. Both components operate across -55°C to 150°C and meet RoHS3 compliance.

Q: What is the significance of the reverse recovery time difference?

A: The ES2B-HF reverse recovery time of 35 ns is faster than the US2B-HF at 50 ns. Both values fall within the fast recovery classification (≤ 500 ns). The faster recovery time of the ES2B-HF results in reduced switching losses and improved efficiency in high-frequency switching applications, while maintaining compatibility with designs specified for the US2B-HF.

Q: Are there package compatibility concerns when substituting these parts?

A: No. Both the US2B-HF and ES2B-HF use the DO-214AC (SMA) surface mount package. Mechanical footprint, thermal characteristics, and PCB assembly processes are identical.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the US2B-HF and ES2B-HF are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, meeting identical environmental and regulatory standards.

Q: What determines whether a part qualifies as a substitute?

A: Substitution is based on equivalence across voltage rating, current rating, forward voltage drop, speed classification, package type, operating temperature range, and compliance certifications. The ES2B-HF meets all these criteria for the US2B-HF.