BAT54ATC Equivalent & Substitute Parts

Part Overview

The BAT54ATC is a Schottky diode array manufactured by Diodes Incorporated, configured as 1 pair common anode with 30 V reverse voltage rating and 200 mA average rectified current per diode. The device is housed in a SOT-23-3 surface mount package. The BAT54ATC is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array configuration.

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	1 V @ 100 mA
Reverse Recovery Time (trr)	5 ns
Current - Reverse Leakage @ Vr	4 µA @ 25 V
Operating Temperature - Junction (Max)	125°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the BAT54ATC are grouped based on strict electrical and mechanical parameter compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

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
Package / Case: TO-236-3, SC-59, SOT-23-3 (or compatible surface mount package)
Mounting Type: Surface Mount

Substitution Categories:

Parametric Equivalent: Parts with identical electrical specifications and package designation, differing only in product status or packaging format.

Direct Manufacturer Equivalent: Parts from alternative manufacturers meeting or exceeding the electrical specifications and package requirements of the BAT54ATC.

Manufacturer Recommended Equivalent: Parts designated by manufacturers as direct replacements, including automotive-qualified variants and enhanced performance options.

Parts exceeding the BAT54ATC specifications (higher voltage, current, or temperature ratings) are included as they maintain backward compatibility while providing additional design margin.

Parameter Comparison

Part Number	Manufacturer	Diode Config	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Ir @ Vr	Tj (Max)	Package	Product Status
BAT54ATC	Diodes Incorporated	1 Pair Common Anode	30 V	200 mA	1 V @ 100 mA	5 ns	4 µA @ 25 V	125°C	SOT-23-3	Obsolete
BAT54ATA	Diodes Incorporated	1 Pair Common Anode	30 V	200 mA	1 V @ 100 mA	5 ns	4 µA @ 25 V	125°C	SOT-23-3	Active
BAR43A-TP	Micro Commercial Co	1 Pair Common Anode	30 V	200 mA	800 mV @ 100 mA	5 ns	500 nA @ 25 V	150°C	SOT-23	Active
BAT5406E6327HTSA1	Infineon Technologies	1 Pair Common Anode	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	150°C	SOT-23-3	Active
BAT54-E3-18	Vishay General Semiconductor - Diodes Division	1 Pair Common Anode	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	125°C	SOT-23-3	Active
BAT54-G3-08	Vishay General Semiconductor - Diodes Division	1 Pair Common Anode	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	125°C	SOT-23-3	Active
BAT54-HE3-18	Vishay General Semiconductor - Diodes Division	1 Pair Common Anode	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	125°C	SOT-23-3	Last Time Buy
BAT54A,235	Nexperia USA Inc.	1 Pair Common Anode	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	150°C	SOT-23-3	Active
BAT54AFILM	STMicroelectronics	1 Pair Common Anode	40 V	300 mA	900 mV @ 100 mA	5 ns	1 µA @ 30 V	150°C	SOT-23-3	Active
BAT54ALT1G	onsemi	1 Pair Common Anode	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	150°C	SOT-23-3	Active
BAT54AWFILM	STMicroelectronics	1 Pair Common Anode	40 V	300 mA	900 mV @ 100 mA	5 ns	1 µA @ 30 V	150°C	SOT-323	Active

Engineering Selection Recommendations

Primary Recommendation: BAT54ATA

The BAT54ATA from Diodes Incorporated is the direct parametric equivalent to the BAT54ATC. This part maintains identical electrical specifications and package designation while offering active product status. The BAT54ATA is available in higher inventory quantities (145,390 pcs) and is supplied in standard Cut Tape and Digi-Reel packaging formats suitable for production environments.

Secondary Recommendations (Active Status, Identical Specifications):

BAT54ALT1G (onsemi) provides identical 30 V / 200 mA specifications with active product status and extended operating temperature range (-55°C to 150°C). This part is available in high inventory (155,200 pcs) and is ROHS3 compliant with MSL 1 rating.

BAT54-E3-18 and BAT54-G3-08 (Vishay General Semiconductor - Diodes Division) both meet the BAT54ATC electrical specifications with active product status. These parts are available in Tape & Reel and Cut Tape packaging respectively, with inventory levels of 19,258 pcs and 27,102 pcs.

BAT54A,235 (Nexperia USA Inc.) meets all electrical specifications with active product status and includes AEC-Q101 automotive qualification. This part is available in 94,529 pcs inventory.

Enhanced Performance Options (Higher Ratings, Active Status):

BAT54AFILM and BAT54AWFILM (STMicroelectronics) exceed BAT54ATC specifications with 40 V reverse voltage and 300 mA current ratings. These parts provide additional design margin for applications requiring enhanced performance. BAT54AFILM maintains SOT-23-3 package compatibility, while BAT54AWFILM uses SOT-323 package format.

Alternative Manufacturer Option:

BAR43A-TP (Micro Commercial Co) meets the 30 V / 200 mA specifications with active product status and 150°C maximum junction temperature. This part is available in bulk packaging with 945 pcs inventory.

Infineon Alternative:

BAT5406E6327HTSA1 (Infineon Technologies) provides identical 30 V / 200 mA specifications with active product status, 150°C maximum junction temperature, and ROHS3 compliance. This part is available in 106,480 pcs inventory in Tape & Reel packaging.

Avoid: BAT54-HE3-18 (Vishay) is designated as Last Time Buy product status and should not be selected for new designs requiring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can BAT54ATA be used as a direct replacement for BAT54ATC?

A: Yes. The BAT54ATA is a parametric equivalent with identical electrical specifications (30 V reverse voltage, 200 mA current, 1 V forward voltage at 100 mA, 5 ns recovery time) and package designation (SOT-23-3). The primary difference is product status: BAT54ATA is active while BAT54ATC is obsolete. BAT54ATA is the recommended replacement.

Q: What is the difference between BAT54ATC and BAT54ALT1G?

A: Both parts share identical electrical specifications (30 V, 200 mA, Schottky technology, SOT-23-3 package). The BAT54ALT1G from onsemi offers an extended operating temperature range (-55°C to 150°C) compared to the BAT54ATC (125°C maximum). BAT54ALT1G is active product status with higher inventory availability.

Q: Are the Vishay BAT54-E3-18, BAT54-G3-08, and BAT54-HE3-18 interchangeable?

A: All three Vishay parts meet the BAT54ATC electrical specifications and use SOT-23-3 packaging. The differences are packaging format (Tape & Reel, Cut Tape, and Cut Tape respectively) and product status. BAT54-E3-18 and BAT54-G3-08 are active. BAT54-HE3-18 is Last Time Buy status and should not be selected for new designs.

Q: Can BAT54AFILM or BAT54AWFILM replace BAT54ATC?

A: Yes, with design considerations. Both STMicroelectronics parts exceed BAT54ATC specifications with 40 V reverse voltage and 300 mA current ratings, providing backward compatibility. BAT54AFILM maintains SOT-23-3 package compatibility. BAT54AWFILM uses SOT-323 package, which is physically smaller and requires PCB layout modification. Both parts are suitable for applications where enhanced performance margin is beneficial.

Q: What is the significance of the SOT-23-3 package designation?

A: SOT-23-3 (also designated TO-236-3 or SC-59) is a three-pin surface mount package. All recommended substitutes maintain this package designation except BAT54AWFILM, which uses SOT-323. Package compatibility ensures direct PCB footprint compatibility without layout redesign.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture handling requirements during storage or assembly.

Q: Which substitute offers the best supply availability?

A: BAT54ALT1G (onsemi) offers the highest inventory level at 155,200 pcs, followed by BAT54ATA (Diodes Incorporated) at 145,390 pcs. Both parts are active status with immediate availability.

Q: Can BAR43A-TP from Micro Commercial Co be used as a substitute?

A: Yes. BAR43A-TP meets the 30 V / 200 mA specifications with 5 ns recovery time and active product status. The part offers lower reverse leakage (500 nA at 25 V) and higher maximum junction temperature (150°C) compared to BAT54ATC. Inventory is limited to 945 pcs in bulk packaging.

Q: What is the difference between forward voltage specifications across substitute parts?

A: The BAT54ATC specifies 1 V maximum forward voltage at 100 mA. Most substitute parts specify 800 mV at 100 mA, representing improved performance. This lower forward voltage reduces power dissipation in applications with continuous forward current. The 800 mV specification is backward compatible with designs accepting up to 1 V.

Q: Are automotive-qualified versions available?

A: Yes. BAT54-HE3-18 (Vishay) and BAT54A,235 (Nexperia) both carry AEC-Q101 automotive qualification. BAT54-HE3-18 is Last Time Buy status. BAT54A,235 is active status with 94,529 pcs inventory and is recommended for automotive applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message