BAT54AWT3G Equivalent & Substitute Parts

Part Overview

The BAT54AWT3G is a Schottky diode array manufactured by onsemi, configured as 1 pair common anode with a maximum reverse voltage of 30 V and average rectified current of 200 mA per diode. The device is housed in an SC-70, SOT-323 surface mount package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement continuity.

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	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	SC-70, SOT-323
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BAT54AWT3G 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 or lower @ 25 V
Package / Case: SC-70, SOT-323
Mounting Type: Surface Mount

Substitute parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Equivalents: Parts from onsemi with identical electrical specifications and active product status (BAT54AWT1G, SBAT54AWT1G).

Parametric Equivalents: Parts from alternative manufacturers (Nexperia, Infineon) meeting all electrical and mechanical requirements with active status and compliance certifications.

Similar Parts: Components with enhanced specifications (higher voltage or current ratings) or different product status that may serve as functional alternatives in specific applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Ir @ Vr	Tj (Operating)	Package	Product Status	RoHS Status
BAT54AWT3G	onsemi	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55°C ~ 125°C	SC-70, SOT-323	Obsolete	Not specified
BAT54AWT1G	onsemi	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55°C ~ 125°C	SC-70, SOT-323	Active	ROHS3 Compliant
SBAT54AWT1G	onsemi	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55°C ~ 125°C	SC-70, SOT-323	Active	ROHS3 Compliant
1PS70SB16,115	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	Not specified	2 µA @ 25 V	150°C (Max)	SC-70, SOT-323	Active	ROHS3 Compliant
BAT54AW-7-F	Diodes Incorporated	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	-65°C ~ 125°C	SC-70, SOT-323	Active	ROHS3 Compliant
BAT54AW-7	Diodes Incorporated	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	-65°C ~ 125°C	SC-70, SOT-323	Discontinued at DiGi Electronics	RoHS non-compliant
BAT54AWFILM	STMicroelectronics	40 V	300 mA	900 mV @ 100 mA	5 ns	1 µA @ 30 V	-40°C ~ 150°C	SC-70, SOT-323	Active	ROHS3 Compliant
BAT5406WH6327XTSA1	Infineon Technologies	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	150°C (Max)	SC-70, SOT-323	Active	ROHS3 Compliant
BAT54AW,115	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	150°C (Max)	SC-70, SOT-323	Active	ROHS3 Compliant
BAT54AWF	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	150°C (Max)	SC-70, SOT-323	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

BAT54AWT1G and SBAT54AWT1G from onsemi are direct functional replacements for the obsolete BAT54AWT3G. Both parts maintain identical electrical specifications and are classified as active products with ROHS3 compliance. BAT54AWT1G is supplied in Tape & Reel packaging with 16,531 units in stock, while SBAT54AWT1G is also in Tape & Reel format with 18,637 units available.

Parametric Equivalents (Full Specification Match):

BAT5406WH6327XTSA1 (Infineon), BAT54AW,115 (Nexperia), and BAT54AWF (Nexperia) meet all electrical and mechanical requirements of the BAT54AWT3G. These parts are active products with ROHS3 compliance. BAT54AW,115 and BAT54AWF carry automotive-grade qualifications (AEC-Q101), suitable for applications requiring automotive-level reliability. BAT5406WH6327XTSA1 provides 30,621 units in stock.

Alternative with Enhanced Specifications:

BAT54AW-7-F (Diodes Incorporated) is an active product offering enhanced specifications including extended lower operating temperature (-65°C minimum) and ROHS3 compliance. This part accommodates the same electrical requirements with 35,100 units in stock. The forward voltage specification is 1 V @ 100 mA, which is higher than the 800 mV specification of the main part but remains within acceptable operating parameters for most applications.

Parts Not Recommended:

BAT54AW-7 (Diodes Incorporated) is discontinued at DiGi Electronics and carries RoHS non-compliance status, making it unsuitable for new designs.

BAT54AWFILM (STMicroelectronics) features enhanced voltage (40 V) and current (300 mA) ratings but differs in forward voltage specification (900 mV @ 100 mA) and reverse leakage characteristics (1 µA @ 30 V). This part is suitable only when higher voltage or current margins are required.

1PS70SB16,115 (Nexperia) is an automotive-qualified part (AEC-Q100) with identical electrical specifications but limited stock availability (1,227 units).

Frequently Asked Questions (FAQ)

Q: Can BAT54AWT1G be used as a direct replacement for BAT54AWT3G?

A: Yes. BAT54AWT1G is a direct functional equivalent manufactured by onsemi with identical electrical specifications, package type (SC-70, SOT-323), and diode configuration (1 pair common anode). The primary difference is product status: BAT54AWT1G is active while BAT54AWT3G is obsolete. Both parts meet the same voltage (30 V), current (200 mA), and thermal specifications.

Q: What is the difference between BAT54AWT1G and SBAT54AWT1G?

A: Both parts are manufactured by onsemi and share identical electrical specifications. The "S" prefix in SBAT54AWT1G indicates a variant designation but does not alter the functional performance or electrical characteristics. Both are active products with ROHS3 compliance and equivalent stock availability.

Q: Are Nexperia and Infineon parts compatible with the BAT54AWT3G?

A: Yes. BAT54AW,115, BAT54AWF (Nexperia), and BAT5406WH6327XTSA1 (Infineon) are parametric equivalents meeting all electrical and mechanical requirements. These parts maintain the same 30 V reverse voltage, 200 mA current rating, 800 mV forward voltage, and SC-70, SOT-323 package. All are active products with ROHS3 compliance.

Q: What is the significance of automotive qualifications (AEC-Q100, AEC-Q101)?

A: Automotive qualifications indicate that parts have undergone rigorous testing and reliability assessment for automotive applications. BAT54AW,115, BAT54AWF (AEC-Q101), and 1PS70SB16,115 (AEC-Q100) carry these certifications. For non-automotive applications, these certifications provide additional assurance of component reliability but are not mandatory.

Q: Can BAT54AW-7-F be used instead of BAT54AWT3G?

A: Yes, with consideration of forward voltage specification. BAT54AW-7-F meets all critical electrical parameters (30 V reverse voltage, 200 mA current, 5 ns recovery time) and is housed in the same SC-70, SOT-323 package. The forward voltage is specified at 1 V @ 100 mA compared to 800 mV for the main part. This 200 mV difference is acceptable in most circuit applications but should be verified against specific design requirements.

Q: Why is BAT54AWFILM listed as a similar part rather than a direct equivalent?

A: BAT54AWFILM features enhanced specifications (40 V reverse voltage, 300 mA current) and differs in forward voltage (900 mV @ 100 mA) and reverse leakage (1 µA @ 30 V). While it shares the same package and diode configuration, these parameter differences classify it as a similar part suitable for applications requiring higher voltage or current margins rather than a direct replacement.

Q: What packaging options are available for substitute parts?

A: Substitute parts are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats. BAT54AWT1G, SBAT54AWT1G, 1PS70SB16,115, BAT54AW-7-F, BAT54AW-7, BAT5406WH6327XTSA1, and BAT54AWF are available in Tape & Reel. BAT54AW,115 is supplied in Cut Tape & Digi-Reel® format. Packaging selection depends on production volume and assembly requirements.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts are ROHS3 compliant except BAT54AW-7, which is RoHS non-compliant and discontinued. ROHS3 compliance is mandatory for new designs and procurement in most markets.

Q: What is the maximum operating junction temperature for each substitute?

A: BAT54AWT3G, BAT54AWT1G, and SBAT54AWT1G operate to -55°C ~ 125°C. BAT54AW-7-F and BAT54AW-7 extend to -65°C ~ 125°C. Nexperia parts (BAT54AW,115, BAT54AWF) and Infineon BAT5406WH6327XTSA1 are rated to 150°C maximum. BAT54AWFILM operates to -40°C ~ 150°C. Selection should align with application thermal requirements.

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