SS54B-HF Equivalent & Substitute Parts Reference

Part Overview

SS54B-HF by Comchip Technology is a Schottky rectifier in the Diodes, Rectifiers category. It is designed for surface mount applications in the DO-214AA (SMB) package. The part operates at a 40 V maximum reverse voltage and a 5A average rectified current, with forward voltage drop up to 550 mV at 5 A. Fast recovery and low reverse leakage characteristics are key features. The product is active, ROHS3 compliant, and has unlimited moisture sensitivity level (MSL 1). Seeking equivalency or substitutes may be necessary due to inventory management, supply continuity, or compliance with RoHS and REACH directives within a given design.

Substiute Parts

SS54B-HF

Comchip TechnologyIn Stock: 893SS54B-HF Datasheet

Current PartRFQ

SK54B-LTP

Micro Commercial CoIn Stock: 35328SK54B-LTP Datasheet

Parametric EquivalentRFQ

SK54BHE3-LTP

Micro Commercial CoIn Stock: 3975SK54BHE3-LTP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are identified by matching the following electrical and mechanical parameters: Schottky technology, reverse voltage rating (40 V), average rectified current (5A), forward voltage drop (550 mV @ 5A), comparable reverse leakage current, recovery speed, mounting type (surface mount), package (DO-214AA/SMB), and operating temperature range. Compliance status such as RoHS3, MSL 1, and product status (Active) are also strictly matched for equivalency.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts—SK54B-LTP and SK54BHE3-LTP—are active, ROHS3 compliant, and have identical moisture sensitivity levels. SK54BHE3-LTP is identified as automotive grade and AEC-Q101 qualified. Use parametric equivalency, product status, and compliance information as the selection criteria. Ensure all parameters relevant to certification and supply status are matched as provided.

Frequently Asked Questions (FAQ)

Q1: What are the most critical parameters for substituting SS54B-HF in a design?
A1: Schottky technology, reverse voltage (40 V), average rectified current (5A), forward voltage drop at full rated current (550 mV @ 5 A), reverse leakage current, recovery speed, mounting type (Surface Mount), package (DO-214AA/SMB), and compliance status are the key criteria.

Q2: Does package equivalency matter for substitution?
A2: Yes. All listed substitutes conform to the DO-214AA, SMB package and are surface mount compatible.

Q3: Are the substitute parts RoHS3 compliant?
A3: Yes. All listed models (SK54B-LTP, SK54BHE3-LTP) are ROHS3 compliant.

Q4: Is automotive qualification important for this part category?
A4: If automotive qualification (AEC-Q101) is required, SK54BHE3-LTP provides this feature, as specified.

Q5: How does moisture sensitivity level (MSL) affect selection?
A5: All parts have an unlimited moisture sensitivity level (MSL 1), ensuring compatibility in assembly and handling processes.

Q6: Are there differences in reverse leakage or capacitance between parts?
A6: There are differences; for example, SS54B-HF specifies 1 mA @ 40 V reverse leakage and 500pF capacitance, while substitutes specify up to 1 mA or 100 µA @ 40 V and 200pF at the same test conditions. Review these parameters to ensure compliance with specific circuit requirements.

Q7: What does "Active" product status indicate?
A7: "Active" product status confirms that the component is currently in production and available for procurement, supporting continuity of supply.