BAT54C-7 Equivalent & Substitute Parts

Part Overview

The BAT54C-7 is a Schottky diode array in a 1 Pair Common Cathode 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 small signal speed classification. The BAT54C-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 Cathode
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 BAT54C-7 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode (mandatory)
Technology: Schottky (mandatory)
Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io) (per Diode): 200 mA minimum
Reverse Recovery Time (trr): 5 ns
Package / Case: TO-236-3, SC-59, SOT-23-3 or SC-70, SOT-323

Substitute parts are grouped into two categories:

Category 1: Direct Electrical and Package Equivalents (SOT-23-3 Package) Parts that maintain identical electrical specifications and the same SOT-23-3 package footprint. These parts are pin-compatible and require no circuit board modifications.

Category 2: Functional Equivalents with Package Variation (SOT-323 Package) Parts that maintain identical electrical specifications but utilize the SC-70, SOT-323 package. These parts require PCB layout adjustment due to different pin spacing and footprint geometry.

Category 3: Parametric Variants Parts that exceed the minimum electrical specifications (higher voltage or current ratings) while maintaining the same package family. These parts are backward-compatible but operate with design margin above the original specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Diode Configuration	Technology	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Ir @ Vr	Package / Case	Product Status	RoHS Status
BAT54C-7	Diodes Incorporated	1 Pair Common Cathode	Schottky	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	TO-236-3, SC-59, SOT-23-3	Discontinued	RoHS non-compliant
BAT54C-7-F	Diodes Incorporated	1 Pair Common Cathode	Schottky	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	TO-236-3, SC-59, SOT-23-3	Active	ROHS3 Compliant
BAR43CFILM	STMicroelectronics	1 Pair Common Cathode	Schottky	30 V	100 mA	1 V @ 100 mA	5 ns	500 nA @ 30 V	TO-236-3, SC-59, SOT-23-3	Active	ROHS3 Compliant
BAT5405WH6327XTSA1	Infineon Technologies	1 Pair Common Cathode	Schottky	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SC-70, SOT-323	Active	ROHS3 Compliant
BAT54C-TP	Micro Commercial Co	1 Pair Common Cathode	Schottky	30 V	200 mA	1 V @ 100 mA	5 ns	2 µA @ 25 V	TO-236-3, SC-59, SOT-23-3	Active	ROHS3 Compliant
BAT54C_R1_00001	Panjit International Inc.	1 Pair Common Cathode	Schottky	30 V	200 mA	600 mV @ 100 mA	Not specified	2 µA @ 25 V	TO-236-3, SC-59, SOT-23-3	Active	ROHS3 Compliant
BAT54CFILM	STMicroelectronics	1 Pair Common Cathode	Schottky	40 V	300 mA	900 mV @ 100 mA	5 ns	1 µA @ 30 V	TO-236-3, SC-59, SOT-23-3	Active	ROHS3 Compliant
BAT54CW,115	Nexperia USA Inc.	1 Pair Common Cathode	Schottky	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	SC-70, SOT-323	Active	ROHS3 Compliant
CBAT54C TR PBFREE	Central Semiconductor Corp	1 Pair Common Cathode	Schottky	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	TO-236-3, SC-59, SOT-23-3	Active	ROHS3 Compliant
PMEG3005CT,215	Nexperia USA Inc.	1 Pair Common Cathode	Schottky	30 V	500 mA	430 mV @ 500 mA	17 ns	150 µA @ 30 V	TO-236-3, SC-59, SOT-23-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (No PCB Modification Required):

BAT54C-7-F is the primary direct replacement. This part is manufactured by Diodes Incorporated, the original manufacturer of the BAT54C-7, and maintains identical electrical specifications and SOT-23-3 package geometry. The part is currently in active production status with ROHS3 compliance and high inventory availability (152,295 units).

CBAT54C TR PBFREE (Central Semiconductor Corp) provides an alternative direct replacement with identical electrical specifications, SOT-23-3 package compatibility, and ROHS3 compliance. This part is suitable for applications requiring a second-source component.

BAT54C-TP (Micro Commercial Co) is compatible with the original BAT54C-7 footprint and electrical requirements. Forward voltage specification differs slightly (1 V @ 100 mA versus 800 mV @ 100 mA), which is within acceptable tolerance for most applications. ROHS3 compliance is confirmed.

BAT54C_R1_00001 (Panjit International Inc.) offers improved forward voltage performance (600 mV @ 100 mA) while maintaining all other electrical parameters and SOT-23-3 package compatibility. ROHS3 compliance is confirmed.

For Package-Compatible Replacement (SOT-323 Package):

BAT5405WH6327XTSA1 (Infineon Technologies) and BAT54CW,115 (Nexperia USA Inc.) both provide identical electrical specifications to the BAT54C-7 but utilize the SC-70, SOT-323 package. These parts require PCB layout modification due to different pin spacing and footprint dimensions. Both parts are in active production with ROHS3 compliance.

For Parametric Variant Applications:

BAT54CFILM (STMicroelectronics) exceeds the original BAT54C-7 specifications with 40 V reverse voltage rating and 300 mA current rating. This part maintains SOT-23-3 package compatibility and is suitable for applications requiring higher voltage or current margins. ROHS3 compliance is confirmed.

BAR43CFILM (STMicroelectronics) provides a reduced current rating (100 mA) compared to the BAT54C-7 (200 mA) and is not suitable for applications requiring the full 200 mA specification. This part is included for reference only.

PMEG3005CT,215 (Nexperia USA Inc.) provides significantly higher current capability (500 mA) with improved forward voltage characteristics (430 mV @ 500 mA). This part maintains SOT-23-3 package compatibility and is suitable for applications requiring higher current capacity. ROHS3 compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can BAT54C-7-F be used as a direct replacement for BAT54C-7?

A: Yes. BAT54C-7-F is manufactured by Diodes Incorporated and maintains identical electrical specifications, package geometry (SOT-23-3), and pin configuration. No circuit board modifications are required. The primary difference is product status (active versus discontinued) and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: What is the difference between SOT-23-3 and SOT-323 packages?

A: SOT-23-3 (TO-236-3, SC-59) and SOT-323 (SC-70) are both surface mount packages for three-terminal devices but have different physical dimensions and pin spacing. SOT-323 is a smaller package. Parts using SOT-323 package (BAT5405WH6327XTSA1, BAT54CW,115) require different PCB footprints and cannot be directly substituted without layout modification.

Q: Can BAT54CFILM replace BAT54C-7 in all applications?

A: BAT54CFILM can replace BAT54C-7 in applications where the original 30 V specification is used. BAT54CFILM is rated for 40 V, providing additional design margin. The part maintains SOT-23-3 package compatibility and identical 200 mA current rating. Forward voltage is slightly higher (900 mV @ 100 mA versus 800 mV @ 100 mA), which may affect circuit performance in precision applications.

Q: Is ROHS3 compliance required for the replacement part?

A: ROHS3 compliance is not a functional requirement for component substitution. However, all recommended active substitutes are ROHS3 compliant, which aligns with current manufacturing standards and regulatory requirements. The original BAT54C-7 is RoHS non-compliant.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time is the time required for a diode to switch from forward conduction to reverse blocking. All recommended substitutes maintain the 5 ns specification of the original BAT54C-7, except PMEG3005CT,215 which specifies 17 ns. For most applications, this difference is not critical, but high-frequency switching circuits may require verification.

Q: Can BAR43CFILM be used as a substitute?

A: BAR43CFILM is not recommended as a direct substitute. While it maintains the same package (SOT-23-3) and voltage rating (30 V), the current rating is reduced to 100 mA, which is insufficient for applications requiring the full 200 mA specification of the BAT54C-7.

Q: What are the inventory considerations for selecting a substitute?

A: BAT54C-7-F has the highest inventory availability (152,295 units), making it the most readily available direct replacement. PMEG3005CT,215 (53,518 units) and BAT54CFILM (29,200 units) also have substantial inventory. Availability should be verified with suppliers for production requirements.

Q: Are there temperature range differences between substitutes?

A: Yes. The original BAT54C-7 specifies -65°C to 150°C junction temperature range. Most substitutes specify -55°C to 125°C or maximum 150°C. For applications requiring the full -65°C lower temperature limit, BAT54C-7-F and CBAT54C TR PBFREE maintain the -65°C specification. This difference should be evaluated for low-temperature applications.

Q: What is the difference between forward voltage specifications?

A: Forward voltage varies among substitutes: BAT54C-7 specifies 800 mV @ 100 mA, while BAT54C_R1_00001 specifies 600 mV @ 100 mA and BAT54C-TP specifies 1 V @ 100 mA. These variations affect power dissipation and circuit performance. For precision analog circuits, forward voltage differences should be evaluated against circuit requirements.

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