BAT54T-7 Equivalent & Substitute Parts

Part Overview

The BAT54T-7 is a Schottky diode rated for 30 V DC reverse voltage and 200 mA average rectified current in a surface mount SOT-523 package. Manufactured by Diodes Incorporated, this component is qualified to AEC-Q101 automotive standards and features a 5 ns reverse recovery time with low forward voltage drop of 1 V at 100 mA.

The BAT54T-7 is discontinued at DiGi Electronics. Equivalent and substitute parts are available from active product lines that maintain the same electrical performance characteristics or offer compatible alternatives with different package configurations.

Substiute Parts

BAT54T-7

Diodes IncorporatedIn Stock: 92164BAT54T-7 Datasheet

Current PartRFQ

BAT54T-7-F

Diodes IncorporatedIn Stock: 36352BAT54T-7-F Datasheet

DirectRFQ

BAT54WT-TP

Micro Commercial CoIn Stock: 4357BAT54WT-TP Datasheet

UpgradeRFQ

BAT54T-TP

Micro Commercial CoIn Stock: 3892BAT54T-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT54T-7 is determined by electrical parameter equivalence and package compatibility. The critical parameters that define substitutability are:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io): 200 mA
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 100 mA
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 2 µA @ 25 V
• Capacitance @ Vr, F: 10 pF @ 1 MHz

Package Compatibility:

• Direct substitutes maintain SOT-523 package
• Upgrade substitutes use SOT-323 package (different footprint, requires PCB redesign)

Compliance & Status:

• Direct substitutes are active products with RoHS3 compliance
• Original part is discontinued and RoHS non-compliant

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Same Package - SOT-523):

BAT54T-7-F and BAT54T-TP are direct electrical and mechanical equivalents to the BAT54T-7. Both parts maintain the SOT-523 package footprint and satisfy all electrical parameters. BAT54T-7-F is manufactured by Diodes Incorporated (original manufacturer) and is available in Tape & Reel packaging. BAT54T-TP is manufactured by Micro Commercial Co and is available in Cut Tape & Digi-Reel packaging. Both substitute parts are active products with RoHS3 compliance, addressing the discontinued status and regulatory compliance of the original part.

Upgrade Substitute (Different Package - SOT-323):

BAT54WT-TP is an upgrade substitute that maintains all electrical parameters but uses the SOT-323 package instead of SOT-523. This part is manufactured by Micro Commercial Co and is active with RoHS3 compliance. The SOT-323 package is physically smaller than SOT-523. Selection of this part requires PCB layout modification to accommodate the different footprint. The operating temperature range is -55 to 125 °C, which is narrower than the original part's -65 to 125 °C range.

Frequently Asked Questions (FAQ)

Q: Can BAT54T-7-F be used as a direct replacement for BAT54T-7?

A: Yes. BAT54T-7-F is electrically and mechanically equivalent to BAT54T-7. Both parts use the SOT-523 package and share identical electrical specifications including 30 V reverse voltage, 200 mA current rating, 1 V forward voltage drop, and 5 ns reverse recovery time. BAT54T-7-F is an active product with RoHS3 compliance.

Q: What is the difference between BAT54T-7-F and BAT54T-TP?

A: Both parts are electrically equivalent with SOT-523 packages. The primary differences are manufacturer (Diodes Incorporated vs. Micro Commercial Co) and packaging format (Tape & Reel vs. Cut Tape & Digi-Reel). Selection depends on procurement requirements and packaging preferences.

Q: Can BAT54WT-TP replace BAT54T-7 without PCB modification?

A: No. BAT54WT-TP uses the SOT-323 package, which has a different footprint than the SOT-523 package of BAT54T-7. PCB layout modification is required to accommodate the SOT-323 land pattern. All electrical parameters are equivalent.

Q: What is the operating temperature difference between BAT54T-7 and BAT54WT-TP?

A: BAT54T-7 operates from -65 to 125 °C. BAT54WT-TP operates from -55 to 125 °C. The lower temperature limit of BAT54WT-TP is 10 °C higher. Applications requiring operation below -55 °C must use BAT54T-7, BAT54T-7-F, or BAT54T-TP.

Q: Are all substitute parts AEC-Q101 qualified?

A: BAT54T-7, BAT54T-7-F, and BAT54T-TP are AEC-Q101 qualified. BAT54WT-TP does not list AEC-Q101 qualification in the provided specifications. Applications requiring automotive qualification should use BAT54T-7-F or BAT54T-TP.

Q: What is the RoHS compliance status of these parts?

A: BAT54T-7 is RoHS non-compliant. BAT54T-7-F, BAT54T-TP, and BAT54WT-TP are all RoHS3 compliant. Applications subject to RoHS regulations must use one of the three substitute parts.

Q: Can capacitance differences affect substitution?

A: All parts specify 10 pF capacitance at 1 MHz. Measurement voltage varies (10 V, 1 V, or 0 V depending on part), but this does not affect functional substitutability in typical applications. Circuits with specific capacitance requirements at particular bias voltages should reference the detailed datasheet.