BAT54SWT1 Equivalent & Substitute Parts

Part Overview

The BAT54SWT1 is a Schottky diode array in a 1 Pair Series Connection configuration, rated for 30 V DC reverse voltage and 200 mA average rectified current per diode. Manufactured by onsemi in SC-70 (SOT-323) surface mount packaging, this component is classified as obsolete product status. Due to its obsolete designation, identifying equivalent and substitute parts with active product status is necessary to ensure design continuity and supply chain reliability for new production and ongoing support applications.

Substiute Parts

BAT54SWT1

onsemiIn Stock: 910BAT54SWT1 Datasheet

Current PartRFQ

BAT54SWT1G

onsemiIn Stock: 605271BAT54SWT1G Datasheet

DirectRFQ

BAT54SWT-TP

Micro Commercial CoIn Stock: 46422BAT54SWT-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BAT54SWT1 are qualified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Series Connection
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io) (per Diode): 200 mA (DC)
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 2 µA @ 25 V
• Package / Case: SC-70, SOT-323
• Mounting Type: Surface Mount

Allowable Variations:

• Voltage - Forward (Vf) (Max) @ If: Within 200 mV tolerance (800 mV to 1000 mV @ 100 mA)
• Operating Temperature - Junction: Extended range acceptable (-55°C to 125°C)
• Product Status: Active status preferred for supply continuity
• RoHS Compliance: ROHS3 Compliant status acceptable

Substitute parts meeting these criteria provide functional and mechanical interchangeability with the obsolete BAT54SWT1.

Parameter Comparison

Engineering Selection Recommendations

BAT54SWT1G (onsemi)

The BAT54SWT1G is the direct equivalent substitute for the obsolete BAT54SWT1. Both parts are manufactured by onsemi and share identical electrical specifications including forward voltage, reverse voltage, current ratings, and reverse recovery time. The BAT54SWT1G carries active product status and ROHS3 compliance, providing supply chain continuity and regulatory alignment. Operating temperature range extends to -55°C, offering broader environmental capability. This part is the primary selection for direct replacement applications.

BAT54SWT-TP (Micro Commercial Co)

The BAT54SWT-TP is a similar substitute manufactured by Micro Commercial Co. All critical electrical parameters match the BAT54SWT1, with forward voltage specified at 1 V @ 100 mA (within allowable tolerance). The part maintains active product status and ROHS3 compliance. Operating temperature range extends to -55°C. This part provides an alternative source option when BAT54SWT1G availability is constrained. Packaging is specified as Tape & Reel (TR) format.

Both substitute parts are mechanically and electrically compatible with the obsolete BAT54SWT1 for SC-70 (SOT-323) surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can BAT54SWT1G directly replace BAT54SWT1 in existing designs?

A: Yes. The BAT54SWT1G is a direct equivalent with identical electrical specifications and package configuration. Both parts feature 30 V reverse voltage rating, 200 mA current rating, 5 ns reverse recovery time, and SC-70 (SOT-323) surface mount packaging. The primary difference is product status: BAT54SWT1G is active while BAT54SWT1 is obsolete.

Q: What is the difference between BAT54SWT1G and BAT54SWT-TP?

A: Both parts meet the core electrical requirements for substitution. The primary differences are manufacturer (onsemi vs. Micro Commercial Co) and forward voltage specification (800 mV vs. 1 V @ 100 mA). The 200 mV difference in forward voltage falls within acceptable tolerance for Schottky diode applications. Packaging format differs: BAT54SWT1G is available in Cut Tape (CT) & Digi-Reel format, while BAT54SWT-TP is Tape & Reel (TR).

Q: Are there temperature range differences between the main part and substitutes?

A: Yes. The BAT54SWT1 specifies maximum junction temperature of 125°C. Both substitute parts (BAT54SWT1G and BAT54SWT-TP) specify operating temperature range of -55°C to 125°C, providing extended low-temperature capability. This represents an improvement over the original part specification.

Q: Do the substitute parts meet RoHS requirements?

A: Yes. Both BAT54SWT1G and BAT54SWT-TP are ROHS3 compliant. The original BAT54SWT1 is RoHS non-compliant. For applications requiring RoHS compliance, either substitute part is appropriate.

Q: Are the substitute parts available in the same package?

A: Yes. All three parts (BAT54SWT1, BAT54SWT1G, and BAT54SWT-TP) use SC-70 (SOT-323) surface mount packaging. PCB footprints and assembly processes remain identical.

Q: What is the REACH status of the substitute parts?

A: Both substitute parts maintain REACH Unaffected status, consistent with the original BAT54SWT1. No additional regulatory considerations apply.