BAT54S Equivalent & Substitute Parts

Part Overview

The BAT54S is a Schottky diode array in a 1 Pair Series Connection configuration, manufactured by Taiwan Semiconductor Corporation. This component is designed for surface mount applications requiring low forward voltage drop and fast switching characteristics. The BAT54S is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications where the original manufacturer part becomes unavailable or where alternative sourcing is required.

Substiute Parts

BAT54S

Taiwan Semiconductor CorporationIn Stock: 1685216BAT54S Datasheet

Current PartRFQ

BAT54S

EVVO SemiIn Stock: 1685305BAT54S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT54S is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Series Connection
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 30 V
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 100 mA
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 2 µA @ 25 V
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Current - Average Rectified (Io) (per Diode): Substitute parts must meet or exceed the original specification
• Operating Temperature - Junction: Substitute parts must cover the original operating range or provide equivalent thermal performance within application limits

The BAT54S manufactured by EVVO Semi meets all mandatory matching parameters. The EVVO Semi variant specifies 100 mA average rectified current per diode, which is lower than the Taiwan Semiconductor Corporation specification of 200 mA. This represents a reduced current capability and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

Taiwan Semiconductor Corporation BAT54S is the primary specification reference. This part is Active product status with full RoHS3 compliance and REACH unaffected designation. It provides 200 mA average rectified current per diode and operates across the extended temperature range of -55°C to 125°C.

EVVO Semi BAT54S is electrically and mechanically compatible for applications where the current requirement does not exceed 100 mA per diode. This substitute maintains identical reverse voltage, forward voltage, recovery time, and leakage current specifications. The EVVO Semi variant operates across -40°C to 125°C, which covers the upper portion of the Taiwan Semiconductor Corporation temperature range. Both parts are RoHS3 compliant and packaged identically in SOT-23 surface mount configuration.

Selection between these parts depends on application current requirements. Applications requiring the full 200 mA specification must use the Taiwan Semiconductor Corporation BAT54S. Applications with current demands of 100 mA or less may use either part. Applications requiring operation below -40°C must use the Taiwan Semiconductor Corporation BAT54S.

Frequently Asked Questions (FAQ)

Q: Can the EVVO Semi BAT54S replace the Taiwan Semiconductor Corporation BAT54S in all applications?

A: No. The EVVO Semi variant is rated for 100 mA average rectified current per diode, while the Taiwan Semiconductor Corporation part is rated for 200 mA. Substitution is valid only for applications where the circuit current does not exceed 100 mA per diode. Additionally, the EVVO Semi part operates from -40°C minimum, compared to -55°C for the Taiwan Semiconductor Corporation part. Applications requiring operation below -40°C must use the original Taiwan Semiconductor Corporation BAT54S.

Q: Are the package dimensions identical between these parts?

A: Yes. Both the Taiwan Semiconductor Corporation BAT54S and EVVO Semi BAT54S use the TO-236-3, SC-59, SOT-23-3 package. They are mechanically interchangeable on printed circuit boards designed for SOT-23 surface mount components.

Q: Do both parts meet RoHS3 compliance requirements?

A: Yes. Both the Taiwan Semiconductor Corporation BAT54S and EVVO Semi BAT54S are RoHS3 compliant. The Taiwan Semiconductor Corporation part is also REACH unaffected.

Q: What is the significance of the 1 Pair Series Connection configuration?

A: The BAT54S contains two Schottky diodes connected in series within a single SOT-23 package. This configuration is used in applications requiring series diode functionality, such as protection circuits or signal switching applications where two diodes in series provide specific voltage and current handling characteristics.

Q: Are there differences in reverse recovery time between the parts?

A: No. Both parts specify 5 ns reverse recovery time, indicating identical switching speed performance for small signal applications.

Q: What is the moisture sensitivity level for these parts?

A: The Taiwan Semiconductor Corporation BAT54S moisture sensitivity level is not specified in the provided data. The EVVO Semi BAT54S specifies MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.