BAT54A Equivalent & Substitute Parts

Part Overview

The BAT54A is a Schottky diode array in a 1 Pair Common Anode configuration, manufactured by Diotec Semiconductor. This component is rated for 30 V DC reverse voltage with 200 mA average rectified current per diode and features a small signal speed classification. The part is currently in active production status with substantial inventory availability.

Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and procurement optimization. Alternative sources for the BAT54A maintain identical electrical specifications and mechanical compatibility while offering different packaging formats and compliance certifications.

Substiute Parts

BAT54A

Diotec SemiconductorIn Stock: 1430452BAT54A Datasheet

Current PartRFQ

BAT54A-TP

Micro Commercial CoIn Stock: 2179BAT54A-TP Datasheet

SimilarRFQ

BAT54A_R1_00001

Panjit International Inc.In Stock: 4290BAT54A_R1_00001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT54A is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Diode configuration: 1 Pair Common Anode
• Technology: Schottky
• Voltage rating: 30 V DC reverse (Vr) maximum
• Current rating: 200 mA average rectified (Io) per diode
• Forward voltage: 1 V maximum at 100 mA (or lower)
• Reverse leakage: 2 µA at 25 V
• Speed classification: Small Signal ≤ 200mA (Io)

Mechanical Equivalence Requirements:

• Mounting type: Surface Mount
• Package designation: TO-236-3, SC-59, SOT-23-3

Acceptable Variations:

• Packaging format: Cut Tape (CT), Digi-Reel®, or Tape & Reel (TR)
• Operating temperature range: Minimum -55°C to maximum ≥125°C
• Reverse recovery time: 5 ns or lower
• Compliance certifications: RoHS3, REACH status

All identified substitute parts meet these criteria and are functionally interchangeable in circuit applications designed for the BAT54A.

Parameter Comparison

Engineering Selection Recommendations

BAT54A (Diotec Semiconductor)

This is the primary reference part. It is in active production with the highest inventory level. The operating temperature range extends to 150°C, providing thermal margin for applications requiring elevated junction temperatures. RoHS status is not applicable, indicating this part may be sourced from legacy manufacturing processes. Select this part when maximum thermal headroom is required and RoHS compliance is not a design constraint.

BAT54A-TP (Micro Commercial Co)

This substitute is in active production with ROHS3 compliance and REACH Unaffected status. Packaging is supplied in Tape & Reel format. The operating temperature range is -55°C to 125°C, which is suitable for standard industrial and commercial applications. Moisture sensitivity is rated MSL 1 (Unlimited). Select this part when RoHS3 compliance is required and the application operates within the -55°C to 125°C temperature range.

BAT54A_R1_00001 (Panjit International Inc.)

This substitute is in active production with ROHS3 compliance and REACH Unaffected status. Packaging is supplied in Tape & Reel format. The forward voltage specification is 600 mV at 100 mA, which is lower than the 1 V maximum of the primary part, indicating superior forward voltage performance. The operating temperature range is -55°C to 125°C. Moisture sensitivity is rated MSL 1 (Unlimited). Select this part when RoHS3 compliance is required, lower forward voltage drop is beneficial to circuit performance, and the application operates within the -55°C to 125°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can BAT54A-TP be used as a direct replacement for BAT54A in existing designs?

A: Yes. BAT54A-TP meets all electrical and mechanical specifications of the BAT54A. Both parts feature identical diode configuration, voltage rating, current rating, and package designation (TO-236-3, SC-59, SOT-23-3). The primary difference is packaging format (Tape & Reel versus Cut Tape/Digi-Reel) and compliance certifications. Circuit performance is equivalent.

Q: What is the difference between BAT54A_R1_00001 and the other substitutes?

A: BAT54A_R1_00001 specifies a forward voltage of 600 mV at 100 mA, compared to 1 V for the other parts. This lower forward voltage drop results in reduced power dissipation in the diode during forward conduction. All other electrical parameters and the package designation are identical. This part is suitable for applications where minimizing forward voltage drop improves overall circuit efficiency.

Q: Are all three parts suitable for high-temperature applications?

A: The BAT54A (Diotec) supports operation to 150°C junction temperature, making it suitable for high-temperature environments. BAT54A-TP and BAT54A_R1_00001 are rated to 125°C junction temperature. For applications requiring sustained operation above 125°C, the Diotec BAT54A is the appropriate selection.

Q: What packaging formats are available for these parts?

A: BAT54A is supplied in Cut Tape (CT) and Digi-Reel® formats. BAT54A-TP and BAT54A_R1_00001 are supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes. Cut Tape and Digi-Reel formats are suitable for manual assembly or lower-volume production. Select the packaging format based on assembly process requirements.

Q: Do all substitute parts have the same moisture sensitivity rating?

A: BAT54A has a moisture sensitivity level (MSL) listed as Not Applicable. BAT54A-TP and BAT54A_R1_00001 are both rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. For storage and handling, the MSL 1 rating of the substitute parts imposes no special moisture control requirements.

Q: Are these parts RoHS compliant?

A: BAT54A RoHS status is listed as Not Applicable. BAT54A-TP and BAT54A_R1_00001 are both ROHS3 Compliant. If RoHS3 compliance is a design requirement, select either BAT54A-TP or BAT54A_R1_00001. Both substitute parts also have REACH Unaffected status, confirming compliance with REACH regulations.

Q: Can I use these parts interchangeably in the same circuit board design?

A: Yes, all three parts are mechanically and electrically interchangeable in circuit designs specified for the BAT54A. The SOT-23-3 package footprint is identical across all parts. Verify that the application operating temperature range does not exceed 125°C if using BAT54A-TP or BAT54A_R1_00001, or confirm that the design can tolerate the lower forward voltage of BAT54A_R1_00001 if circuit biasing or current-limiting calculations are sensitive to this parameter.