BAT54A-7 Equivalent & Substitute Parts

Part Overview

The BAT54A-7 is a Schottky diode array in a 1 Pair Common Anode configuration manufactured by Diodes Incorporated. This component features a 30 V DC reverse voltage rating and 200 mA average rectified current per diode, housed in a SOT-23-3 surface mount package. The BAT54A-7 is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
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	800 mV @ 100 mA
Reverse Recovery Time (trr)	5 ns
Current - Reverse Leakage @ Vr	2 µA @ 25 V
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BAT54A-7 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Anode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io) (per Diode): 200 mA minimum
Voltage - Forward (Vf) (Max) @ If: 800 mV or lower @ 100 mA
Reverse Recovery Time (trr): 5 ns
Current - Reverse Leakage @ Vr: 2 µA @ 25 V or lower
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3 or equivalent footprint

Substitute parts are grouped into two categories:

Category 1: Direct Electrical and Package Equivalents Parts that maintain identical electrical specifications and SOT-23-3 packaging, differing only in manufacturer or packaging format (Cut Tape vs. Tape & Reel).

Category 2: Enhanced Specification Equivalents Parts that exceed the BAT54A-7 specifications in voltage rating or current capacity while maintaining the same package footprint and core functionality. These parts are electrically backward compatible.

Category 3: Package Variant Equivalents Parts that maintain identical electrical specifications but utilize alternative surface mount packages (SOT-323) with different footprints.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Ir @ Vr	Package	Product Status	RoHS Status
BAT54A-7	Diodes Incorporated	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SOT-23-3	Discontinued	RoHS non-compliant
BAT54A-7-F	Diodes Incorporated	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SOT-23-3	Active	ROHS3 Compliant
BAT54A-TP	Micro Commercial Co	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	SOT-23	Active	ROHS3 Compliant
BAT54AFILM	STMicroelectronics	40 V	300 mA	900 mV @ 100 mA	5 ns	1 µA @ 30 V	SOT-23-3	Active	ROHS3 Compliant
BAT54AW,115	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SOT-323	Active	ROHS3 Compliant
BAT754A,215	Nexperia USA Inc.	30 V	200 mA	600 mV @ 100 mA	Not specified	2 µA @ 25 V	SOT-23-3	Active	ROHS3 Compliant
BAT5406E6327HTSA1	Infineon Technologies	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SOT-23-3	Active	ROHS3 Compliant
BAT54A,215	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SOT-23-3	Active	ROHS3 Compliant
BAT54A,235	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SOT-23-3	Active	ROHS3 Compliant
BAT54A-E3-08	Vishay General Semiconductor - Diodes Division	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SOT-23-3	Active	ROHS3 Compliant
BAT54A-E3-18	Vishay General Semiconductor - Diodes Division	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SOT-23-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Identical Specifications and Package):

BAT54A-7-F (Diodes Incorporated) is the primary direct replacement. This part maintains all electrical parameters of the BAT54A-7 while offering Active product status and ROHS3 compliance. The transition from Cut Tape to Cut Tape & Digi-Reel® packaging provides improved supply chain availability.

BAT5406E6327HTSA1 (Infineon Technologies), BAT54A,215 (Nexperia USA Inc.), BAT54A,235 (Nexperia USA Inc.), BAT54A-E3-08 (Vishay General Semiconductor - Diodes Division), and BAT54A-E3-18 (Vishay General Semiconductor - Diodes Division) are parametric equivalents with identical electrical specifications and SOT-23-3 packaging. All are Active products with ROHS3 compliance.

Enhanced Specification Replacement:

BAT54AFILM (STMicroelectronics) exceeds BAT54A-7 specifications with 40 V reverse voltage rating and 300 mA current capacity. This part is electrically backward compatible and suitable for applications requiring higher voltage or current margins. The SOT-23-3 package maintains footprint compatibility.

Package Variant Replacement:

BAT54AW,115 (Nexperia USA Inc.) maintains identical electrical specifications but uses SOT-323 packaging. This part is suitable only for designs with SOT-323 footprints and is not interchangeable with SOT-23-3 layouts without PCB modification.

Conditional Replacement:

BAT54A-TP (Micro Commercial Co) provides electrical equivalence with forward voltage specification of 1 V @ 100 mA, which exceeds the BAT54A-7 specification of 800 mV @ 100 mA. This part is suitable for applications where forward voltage margin is not critical.

BAT754A,215 (Nexperia USA Inc.) offers superior forward voltage performance at 600 mV @ 100 mA. This part is suitable for applications benefiting from reduced forward voltage drop.

Frequently Asked Questions (FAQ)

Q: Can BAT54A-7-F be used as a direct replacement for BAT54A-7?

A: Yes. BAT54A-7-F maintains identical electrical specifications including 30 V reverse voltage, 200 mA current rating, 800 mV forward voltage @ 100 mA, and 5 ns reverse recovery time. Both use SOT-23-3 packaging. The primary difference is product status (Active vs. Discontinued) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between BAT54A-7 and BAT54AFILM?

A: BAT54AFILM exceeds BAT54A-7 specifications with 40 V reverse voltage (vs. 30 V) and 300 mA current capacity (vs. 200 mA). Both use SOT-23-3 packaging and maintain the same diode configuration. BAT54AFILM is electrically backward compatible and suitable for designs requiring higher voltage or current ratings.

Q: Can BAT54AW,115 replace BAT54A-7 in existing designs?

A: BAT54AW,115 maintains identical electrical specifications but uses SOT-323 packaging instead of SOT-23-3. Direct substitution requires PCB redesign. The parts are not pin-compatible without layout modification.

Q: What does RoHS3 compliance mean for BAT54A-7 replacement?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements. The original BAT54A-7 is RoHS non-compliant. All listed substitute parts are ROHS3 compliant, making them suitable for applications with RoHS requirements.

Q: Are there differences in operating temperature ranges among substitute parts?

A: Yes. BAT54A-7 operates from -65°C to 150°C. BAT54A-TP operates from -55°C to 125°C. BAT54A-E3-08 and BAT54A-E3-18 operate to 125°C maximum. BAT754A,215 operates to 125°C maximum. BAT54AFILM operates from -40°C to 150°C. Verify operating temperature requirements before selection.

Q: What is the significance of forward voltage differences among substitute parts?

A: Forward voltage affects power dissipation and circuit performance. BAT54A-7 specifies 800 mV @ 100 mA. BAT754A,215 offers 600 mV (lower dissipation), while BAT54A-TP specifies 1 V (higher dissipation). Selection depends on circuit requirements and thermal constraints.

Q: Can BAT54A-TP be used interchangeably with BAT54A-7?

A: BAT54A-TP maintains 30 V reverse voltage and 200 mA current specifications but specifies 1 V forward voltage @ 100 mA versus 800 mV for BAT54A-7. This higher forward voltage increases power dissipation. Substitution is acceptable where forward voltage margin is not critical.

Q: What packaging formats are available for BAT54A-7 substitutes?

A: Substitute parts are available in Cut Tape (CT), Cut Tape & Digi-Reel® (CT & Digi-Reel®), and Tape & Reel (TR) formats. Package case designations include SOT-23-3 (TO-236-3, SC-59) and SOT-323 (SC-70). Verify packaging compatibility with assembly equipment and supply chain requirements.

Q: Are automotive-grade substitutes available?

A: Yes. BAT54AW,115 (Nexperia USA Inc., AEC-Q101 qualified), BAT54A,215 (Nexperia USA Inc., AEC-Q101 qualified), and BAT54A,235 (Nexperia USA Inc., AEC-Q101 qualified) are automotive-grade alternatives. BAT754A,215 (Nexperia USA Inc., AEC-Q100 qualified) is also automotive-qualified.

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