SR204H Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR204H is an active-status Schottky rectifier diode rated for 40 V DC reverse voltage and 2 A average rectified current in a through-hole DO-204AC (DO-15) axial package. This component is manufactured by Taiwan Semiconductor Corporation and is AEC-Q101 qualified for automotive applications. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and regulatory compliance. Alternative models become necessary when the primary part number experiences supply constraints or when design flexibility across qualified manufacturers is required.

Substiute Parts

SR204H

Taiwan Semiconductor CorporationIn Stock: 682SR204H Datasheet

Current PartRFQ

SR204

Taiwan Semiconductor CorporationIn Stock: 4523SR204 Datasheet

Parametric EquivalentRFQ

SB240-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1655SB240-E3/54 Datasheet

SimilarRFQ

SB240-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 5369SB240-E3/73 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SR204H are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalent (Identical Specifications): Parts that match all critical electrical parameters, reverse voltage rating, forward voltage drop, current rating, and thermal operating range. These parts differ only in packaging format (Tape & Reel versus Cut Tape) and inventory availability.

Similar Manufacturer Parts (Cross-Compatible Substitutes): Parts that satisfy the same electrical requirements (40 V reverse voltage, 2 A current rating, fast recovery Schottky technology) and mechanical compatibility (DO-204AC package, through-hole mounting) but originate from alternative manufacturers. These parts are selected based on matching voltage ratings, current capacity, package form factor, and regulatory compliance certifications.

The following parameters determine substitution eligibility:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 2 A
• Technology: Schottky
• Package / Case: DO-204AC, DO-15, Axial
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant

Parameter Comparison

Engineering Selection Recommendations

SR204 (Parametric Equivalent): The SR204 is a direct parametric equivalent to the SR204H, manufactured by the same supplier (Taiwan Semiconductor Corporation) with identical electrical specifications and thermal operating range. This part is suitable for direct substitution when packaging format flexibility is acceptable. The SR204 is supplied in Cut Tape format rather than Tape & Reel, which may affect procurement workflows but does not impact electrical performance or mechanical compatibility.

SB240-E3/54 and SB240-E3/73 (Cross-Manufacturer Substitutes): Both Vishay General Semiconductor SB240 variants satisfy the core electrical requirements (40 V reverse voltage, 2 A current rating, Schottky technology, fast recovery speed) and mechanical compatibility (DO-204AC through-hole package). These parts feature a lower forward voltage drop (500 mV versus 550 mV at 2 A), which represents an improvement in power efficiency. The extended operating temperature range (-65°C to 125°C versus -55°C to 125°C) provides additional thermal margin. Both variants are ROHS3 compliant and maintain identical regulatory status. Selection between SB240-E3/54 and SB240-E3/73 depends on supply availability and procurement logistics, as both parts are electrically and mechanically equivalent.

All substitute parts maintain active product status and full regulatory compliance, ensuring long-term availability and design stability.

Frequently Asked Questions (FAQ)

Q: Can SR204 replace SR204H in production designs? A: Yes. The SR204 is a parametric equivalent with identical electrical specifications and thermal operating range. The only difference is packaging format (Cut Tape versus Tape & Reel). Mechanical compatibility and circuit performance are unchanged.

Q: What are the advantages of using SB240-E3/54 or SB240-E3/73 instead of SR204H? A: The Vishay SB240 variants offer lower forward voltage drop (500 mV versus 550 mV at 2 A), resulting in reduced power dissipation and improved efficiency. The extended operating temperature range (-65°C to 125°C) provides additional thermal headroom. All other electrical parameters and mechanical compatibility remain equivalent.

Q: Are there any performance differences between SB240-E3/54 and SB240-E3/73? A: No. Both variants are electrically and mechanically identical. The difference in part number designations reflects different manufacturing or distribution batches from Vishay. Selection between them is based solely on supply availability.

Q: Can these substitute parts be used in automotive applications? A: The SR204H carries AEC-Q101 qualification for automotive use. The Vishay SB240 variants are not specified with AEC-Q101 qualification in the provided data. For automotive applications requiring AEC-Q101 certification, the SR204H or SR204 are the appropriate selections.

Q: What is the impact of different packaging formats (Tape & Reel versus Cut Tape)? A: Packaging format affects procurement and assembly logistics but does not impact electrical performance or mechanical compatibility. Tape & Reel format is optimized for automated assembly lines, while Cut Tape format is suitable for manual or mixed-volume assembly. Both formats use the same DO-204AC through-hole package.

Q: Are all substitute parts RoHS3 compliant? A: Yes. The SR204H, SR204, SB240-E3/54, and SB240-E3/73 are all ROHS3 compliant and REACH unaffected, ensuring regulatory compliance across all substitute options.

Q: What is the minimum operating temperature difference between the main part and substitutes? A: The SR204H and SR204 operate from -55°C to 125°C. The Vishay SB240 variants extend the lower temperature limit to -65°C, providing an additional 10°C of cold-temperature margin. Both ranges satisfy standard industrial and automotive thermal requirements.