SS56F-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS56F-HF is an active Schottky rectifier diode manufactured by Comchip Technology, rated for 60V DC reverse voltage and 5A average rectified current in a surface mount SMAF package. This component is designed for fast recovery applications requiring low forward voltage drop and rapid switching characteristics. Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate varying packaging or sourcing requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

SS56F-HF

Comchip TechnologyIn Stock: 1021SS56F-HF Datasheet

Current PartRFQ

SS56-HF

Comchip TechnologyIn Stock: 1132SS56-HF Datasheet

Parametric EquivalentRFQ

SS56

MDDIn Stock: 83152SS56 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS56F-HF is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 60 V
• Current - Average Rectified (Io): 5 A
• Voltage - Forward (Vf) (Max) @ If: 700 mV @ 5 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Capacitance @ Vr, F: 300 pF @ 4V, 1MHz
• Mounting Type: Surface Mount
• Package / Case: DO-214AC, SMA
• Operating Temperature - Junction: -55°C to 150°C
• Technology: Schottky

Acceptable Variation Parameters:

• Current - Reverse Leakage @ Vr: Variation permitted within component tolerance
• Packaging format (Tape & Reel, Cut Tape, Digi-Reel®): Functionally equivalent
• Manufacturer: Alternative qualified manufacturers acceptable
• RoHS/Compliance certifications: ROHS3 or equivalent compliance required

Substitute parts SS56-HF (Comchip Technology) and SS56 (MDD) meet all mandatory equivalence criteria and are classified as parametric equivalents suitable for direct replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

SS56-HF (Comchip Technology): This substitute maintains identical electrical specifications and RoHS3 compliance with the main part SS56F-HF. The primary distinction is packaging format availability (Cut Tape & Digi-Reel® versus Tape & Reel). Both parts share the same base product number (SS56) and are manufactured by the same supplier. Selection of SS56-HF is appropriate when alternative packaging formats are required or when supply availability differs between part numbers.

SS56 (MDD): This substitute is manufactured by MDD and meets all mandatory electrical parameters. The reverse leakage current specification is 500 µA @ 60 V, which is lower than the main part's 1 mA specification, representing improved performance in this parameter. RoHS compliance is confirmed. This part is suitable for applications where MDD component qualification is acceptable and where the lower reverse leakage characteristic provides design advantage.

All three parts are active products with unlimited moisture sensitivity level (MSL 1), confirming suitability for standard handling and storage conditions. Selection among these equivalents should be based on supplier availability, procurement lead time, and any existing component qualification requirements within the design organization.

Frequently Asked Questions (FAQ)

Q: Can SS56-HF be used as a direct replacement for SS56F-HF?

A: Yes. SS56-HF is a parametric equivalent with identical electrical specifications, reverse voltage rating (60V), current rating (5A), forward voltage drop (700 mV @ 5A), and fast recovery characteristics. Both are Comchip Technology products with ROHS3 compliance. The primary difference is packaging format availability.

Q: What is the difference between SS56F-HF and SS56-HF packaging?

A: SS56F-HF is supplied in Tape & Reel (TR) format with SMAF package designation. SS56-HF is available in Cut Tape (CT) and Digi-Reel® formats with DO-214AC (SMA) package designation. Both use the same physical DO-214AC / SMA surface mount package; the difference is in the reel and tape configuration for automated assembly.

Q: Is the MDD SS56 equivalent to the Comchip SS56F-HF?

A: Yes. The MDD SS56 meets all mandatory electrical equivalence criteria: 60V reverse voltage, 5A current rating, 700 mV forward voltage drop, fast recovery speed, and 300 pF capacitance. The reverse leakage current is 500 µA @ 60V, which is lower than the Comchip specification of 1 mA @ 60V. This represents equivalent or superior performance. Both parts are RoHS compliant and rated for -55°C to 150°C junction temperature operation.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. All three parts use identical surface mount DO-214AC / SMA package geometry and are rated for the same operating temperature range (-55°C to 150°C). PCB footprints and assembly processes are compatible. Packaging format differences (Tape & Reel versus Cut Tape) affect only the supply reel configuration and do not impact PCB assembly compatibility.

Q: What compliance certifications apply to these substitute parts?

A: SS56F-HF and SS56-HF are ROHS3 compliant. SS56 (MDD) is RoHS compliant. All three parts have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling. ECCN classification is EAR99 for Comchip parts.

Q: Are there any performance differences between these equivalents?

A: All three parts meet the same electrical specifications for voltage, current, and switching speed. The MDD SS56 exhibits lower reverse leakage current (500 µA versus 1 mA), which may provide marginal advantage in low-leakage applications. This difference is within normal component tolerance variation and does not affect functional equivalence for standard rectifier applications.

Q: What inventory levels are available for these parts?

A: SS56F-HF: 998 pieces in stock. SS56-HF: 1054 pieces in stock. SS56 (MDD): 83,100 pieces in stock. Inventory levels should be confirmed with the supplier at time of procurement.