BAT54AT-7 Equivalent & Substitute Parts

Part Overview

The BAT54AT-7 is a Schottky diode array in a 1 Pair Common Anode configuration manufactured by Diodes Incorporated. This component is rated for 30 V DC reverse voltage with 200 mA average rectified current per diode and features a 5 ns reverse recovery time. The BAT54AT-7 is packaged in SOT-523 surface mount form factor and is currently discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

BAT54AT-7

Diodes IncorporatedIn Stock: 779BAT54AT-7 Datasheet

Current PartRFQ

BAT54AT-7-F

Diodes IncorporatedIn Stock: 23481BAT54AT-7-F Datasheet

DirectRFQ

BAT54AT-TP

Micro Commercial CoIn Stock: 9323BAT54AT-TP Datasheet

DirectRFQ

BAT54AWT-TP

Micro Commercial CoIn Stock: 42715BAT54AWT-TP Datasheet

UpgradeRFQ

BAT54A,235

Nexperia USA Inc.In Stock: 94553BAT54A,235 Datasheet

MFR RecommendedRFQ

BAT54A-TP

Micro Commercial CoIn Stock: 2179BAT54A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT54AT-7 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Requirements:

• Diode Configuration: 1 Pair Common Anode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io) (per Diode): 200 mA (DC)
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 100 mA
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 2 µA @ 25 V

Mechanical Compatibility Requirements:

• Mounting Type: Surface Mount
• Base Product Number: BAT54

Substitute parts are grouped into three categories based on package form factor:

Category 1 - Same Package (SOT-523): Direct mechanical and electrical equivalents with identical SOT-523 packaging.

Category 2 - Alternate Package (SOT-323): Electrical equivalents with different surface mount package (SOT-323/SC-70), requiring PCB layout modification.

Category 3 - Larger Package (SOT-23): Electrical equivalents with larger surface mount package (SOT-23/SC-59/TO-236-3), requiring PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - Same Package (SOT-523):

BAT54AT-7-F (Diodes Incorporated) is the direct equivalent offering identical electrical specifications and SOT-523 packaging. This part is currently active with ROHS3 compliance and represents the optimal substitution path for designs requiring no PCB modification. Inventory availability is 23,400 units.

BAT54AT-TP (Micro Commercial Co) provides equivalent electrical performance in SOT-523 packaging with ROHS3 compliance and active product status. This part is suitable for applications where manufacturer diversification is required. Inventory availability is 9,300 units.

Secondary Substitute - Alternate Package (SOT-323):

BAT54AWT-TP (Micro Commercial Co) maintains all electrical specifications with SOT-323 packaging. This part requires PCB layout modification due to different footprint dimensions. ROHS3 compliance and active product status are confirmed. Inventory availability is 42,679 units.

Tertiary Substitute - Larger Package (SOT-23):

BAT54A-TP (Micro Commercial Co) provides electrical equivalence in SOT-23 packaging with ROHS3 compliance and active product status. PCB layout modification is required. Inventory availability is 2,138 units.

BAT54A,235 (Nexperia USA Inc.) offers electrical equivalence in SOT-23 packaging with ROHS3 compliance, active product status, and AEC-Q101 automotive qualification. Forward voltage is specified at 800 mV @ 100 mA. PCB layout modification is required. Inventory availability is 94,529 units.

Frequently Asked Questions (FAQ)

Q: Can BAT54AT-7-F be used as a direct replacement for BAT54AT-7?

A: Yes. BAT54AT-7-F is manufactured by Diodes Incorporated with identical electrical specifications (30 V, 200 mA, 1 V @ 100 mA, 5 ns trr) and SOT-523 packaging. No PCB modification is required. The primary difference is product status (active versus discontinued) and RoHS compliance (ROHS3 compliant).

Q: What is the difference between BAT54AT-TP and BAT54AT-7-F?

A: Both parts share identical electrical specifications and SOT-523 packaging. The primary differences are manufacturer (Micro Commercial Co versus Diodes Incorporated) and inventory availability. Electrical performance and PCB compatibility are equivalent.

Q: Can BAT54AWT-TP replace BAT54AT-7 without PCB modification?

A: No. BAT54AWT-TP uses SOT-323 packaging while BAT54AT-7 uses SOT-523 packaging. These packages have different footprint dimensions and pin spacing, requiring PCB layout modification. Electrical specifications are identical.

Q: What are the package differences between SOT-523, SOT-323, and SOT-23?

A: SOT-523 is the smallest package used in BAT54AT-7. SOT-323 (SC-70) is a mid-size package used in BAT54AWT-TP. SOT-23 (SC-59, TO-236-3) is the largest package used in BAT54A-TP and BAT54A,235. Each requires different PCB footprints and land patterns.

Q: Is BAT54A,235 suitable for automotive applications?

A: BAT54A,235 carries AEC-Q101 automotive qualification and is rated for maximum junction temperature of 150°C. This part is suitable for automotive-grade applications. Other substitutes do not carry automotive qualification.

Q: What is the forward voltage difference between BAT54AT-7 and BAT54A,235?

A: BAT54AT-7 specifies 1 V @ 100 mA forward voltage. BAT54A,235 specifies 800 mV @ 100 mA forward voltage. This 200 mV difference may affect circuit performance in applications with tight voltage margin requirements.

Q: Are all substitute parts RoHS compliant?

A: BAT54AT-7 is RoHS non-compliant. All substitute parts (BAT54AT-7-F, BAT54AT-TP, BAT54AWT-TP, BAT54A-TP, BAT54A,235) are ROHS3 compliant.

Q: Which substitute offers the highest inventory availability?

A: BAT54A,235 (Nexperia USA Inc.) offers the highest inventory availability at 94,529 units. This part requires SOT-23 packaging and PCB layout modification.