SS54C-HF Schottky Diode 40V 5A Equivalent & Substitute Parts

Part Overview

The SS54C-HF is an active Schottky rectifier diode manufactured by Comchip Technology, rated for 40V DC reverse voltage and 5A average rectified current in a surface mount DO-214AB (SMC) package. This component is designed for fast recovery applications requiring low forward voltage drop and rapid switching characteristics. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility to ensure functional interchangeability in circuit designs.

Substiute Parts

SS54C-HF

Comchip TechnologyIn Stock: 802SS54C-HF Datasheet

Current PartRFQ

B540C-13-F

Diodes IncorporatedIn Stock: 149887B540C-13-F Datasheet

Parametric EquivalentRFQ

B540CQ-13-F

Diodes IncorporatedIn Stock: 26123B540CQ-13-F Datasheet

Parametric EquivalentRFQ

SK54-AU_R1_000A1

Panjit International Inc.In Stock: 2833SK54-AU_R1_000A1 Datasheet

Parametric EquivalentRFQ

SK54_R1_00001

Panjit International Inc.In Stock: 2069SK54_R1_00001 Datasheet

Parametric EquivalentRFQ

SK54L-TP

Micro Commercial CoIn Stock: 41852SK54L-TP Datasheet

Parametric EquivalentRFQ

SK54LHE3-TP

Micro Commercial CoIn Stock: 2458SK54LHE3-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS54C-HF is determined by strict equivalence of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 5 A
• Voltage - Forward (Vf) (Max) @ If: 550 mV @ 5 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 150°C

All identified substitute parts meet these core electrical and mechanical requirements. Variations in secondary parameters such as reverse leakage current and junction capacitance do not preclude substitution when primary specifications are matched. Packaging format (Cut Tape, Tape & Reel) represents logistics variation only and does not affect electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts are active products with ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the SS54C-HF baseline. Selection among equivalent parts should be based on the following criteria:

Standard Industrial Applications: B540C-13-F, B540CQ-13-F, SK54_R1_00001, and SK54L-TP provide direct functional equivalence with no additional qualification requirements.

Automotive Applications: B540CQ-13-F and SK54-AU_R1_000A1 carry AEC-Q101 qualification, meeting automotive-grade reliability standards. SK54LHE3-TP also carries AEC-Q101 qualification and offers the lowest reverse leakage current (100 µA @ 40V) among all options.

Reverse Leakage Considerations: Parts with lower reverse leakage current (SK54LHE3-TP at 100 µA, SK54-AU_R1_000A1 and B540C-13-F at 200-500 µA) may be preferred in applications sensitive to leakage-induced power dissipation compared to the SS54C-HF baseline (1 mA).

Packaging Format: Cut Tape (CT) and Tape & Reel (TR) formats are logistics variants. Selection should align with assembly line requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can B540C-13-F replace SS54C-HF directly?

A: Yes. B540C-13-F meets all critical electrical specifications: 40V reverse voltage, 5A average rectified current, 550 mV forward voltage at 5A, and fast recovery ≤ 500ns. Both use DO-214AB (SMC) surface mount packaging. The lower reverse leakage current (500 µA vs. 1 mA) represents improved performance characteristics.

Q: What is the difference between B540CQ-13-F and B540C-13-F?

A: Both parts are electrically identical with matching voltage, current, and forward voltage specifications. B540CQ-13-F carries AEC-Q101 automotive qualification and is supplied in Tape & Reel format, while B540C-13-F is supplied in Cut Tape format. Selection depends on application grade requirements and packaging preference.

Q: Are Panjit SK54 series parts suitable for automotive applications?

A: SK54-AU_R1_000A1 and SK54LHE3-TP both carry AEC-Q101 qualification and are suitable for automotive-grade applications. SK54_R1_00001 and SK54L-TP are standard industrial grade without automotive qualification.

Q: Why do some substitute parts have lower reverse leakage current than SS54C-HF?

A: Reverse leakage current variation is a secondary parameter that does not affect primary functional equivalence. Lower leakage (100-500 µA) compared to SS54C-HF (1 mA) indicates improved device characteristics and may reduce power dissipation in applications with sustained reverse bias conditions.

Q: Can I use SK54LHE3-TP in place of SS54C-HF?

A: Yes. SK54LHE3-TP meets all critical specifications and offers additional benefits: AEC-Q101 automotive qualification, lower reverse leakage current (100 µA), and lower junction capacitance (200 pF). It is a direct functional substitute suitable for both industrial and automotive applications.

Q: Does packaging format (Cut Tape vs. Tape & Reel) affect electrical performance?

A: No. Packaging format is a logistics and assembly consideration only. Cut Tape (CT) and Tape & Reel (TR) variants of the same part number deliver identical electrical performance. Selection should be based on assembly equipment compatibility and inventory management requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification, matching the SS54C-HF baseline. All parts also have MSL 1 (Unlimited) moisture sensitivity rating.