BAT30CFILM Equivalent & Substitute Parts

Part Overview

The BAT30CFILM is a Schottky diode array manufactured by STMicroelectronics, configured as 1 pair common cathode with a maximum reverse voltage of 30 V and average rectified current of 300 mA per diode. The device is packaged in SOT-23-3 (TO-236-3, SC-59) surface mount configuration. The BAT30CFILM is classified as obsolete product status, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	BAT30CFILM
Manufacturer	STMicroelectronics
Category	Diodes, Rectifiers
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io) (per Diode)	300 mA (DC)
Voltage - Forward (Vf) (Max) @ If	530 mV @ 300 mA
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 30 V
Operating Temperature - Junction (Max)	150°C
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BAT30CFILM is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Diode configuration (1 pair common cathode)
Technology (Schottky)
Maximum reverse voltage (30 V minimum)
Average rectified current per diode (300 mA minimum)
Package type (SOT-23-3 surface mount)
Forward voltage characteristics
Reverse leakage current specifications

Substitution Categories:

Category 1: Direct Electrical Equivalents (Same Vr, Io, Configuration) Parts meeting all primary criteria with identical or superior electrical ratings in the same package.

Category 2: Voltage-Rated Equivalents (Higher Vr, Same or Higher Io) Parts with higher reverse voltage ratings that maintain the same diode configuration and package, suitable for applications with voltage margin requirements.

Category 3: Current-Rated Equivalents (Same Vr, Higher Io) Parts with higher current ratings in the same package and configuration, suitable for applications requiring increased current capacity.

Category 4: Partial Compatibility (Current Derating Required) Parts with lower current ratings that require application derating but maintain voltage and configuration compatibility.

Parameter Comparison

Parameter	BAT30CFILM (Main)	BAT30KFILM	BAT54CFILM	BAT54C-7-F	BAT54CLT1G	BAT54CTA	PMEG3005CT,215
Manufacturer	STMicroelectronics	STMicroelectronics	STMicroelectronics	Diodes Inc.	onsemi	Diodes Inc.	Nexperia USA Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Diode Configuration	1 Pair Common Cathode	Single Diode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	40 V	30 V	30 V	30 V	30 V
Current - Average Rectified (Io) (per Diode)	300 mA	300 mA	300 mA	200 mA	200 mA	200 mA	500 mA
Voltage - Forward (Vf) (Max) @ If	530 mV @ 300 mA	530 mV @ 300 mA	900 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA	1 V @ 100 mA	430 mV @ 500 mA
Speed	Fast Recovery ≤ 500 ns, > 200 mA	Fast Recovery ≤ 500 ns, > 200 mA	Fast Recovery ≤ 500 ns, > 200 mA	Small Signal ≤ 200 mA, Any Speed	Small Signal ≤ 200 mA, Any Speed	Small Signal ≤ 200 mA, Any Speed	Fast Recovery ≤ 500 ns, > 200 mA
Current - Reverse Leakage @ Vr	5 µA @ 30 V	5 µA @ 30 V	1 µA @ 30 V	2 µA @ 25 V	2 µA @ 25 V	4 µA @ 25 V	150 µA @ 30 V
Operating Temperature - Junction (Max)	150°C	150°C	150°C	150°C	125°C	125°C	150°C
Package / Case	TO-236-3, SC-59, SOT-23-3	SC-79, SOD-523	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Recommended Primary Substitutes (Active Product Status):

BAT54CFILM (STMicroelectronics) Maintains identical diode configuration (1 pair common cathode), same package (SOT-23-3), and same current rating (300 mA). Provides higher reverse voltage rating (40 V vs. 30 V), offering increased voltage margin. Active product status with full availability. ROHS3 compliant. Suitable for direct replacement in applications where 40 V rating is acceptable.

PMEG3005CT,215 (Nexperia USA Inc.) Maintains identical diode configuration (1 pair common cathode), same package (SOT-23-3), and same reverse voltage (30 V). Provides higher current rating (500 mA vs. 300 mA), enabling applications with increased current requirements. Active product status with high inventory availability. ROHS3 compliant. Suitable for applications requiring current margin or higher current capacity.

Secondary Substitutes (Current Derating Required):

BAT54C-7-F (Diodes Incorporated) Maintains identical diode configuration (1 pair common cathode), same package (SOT-23-3), and same reverse voltage (30 V). Current rating reduced to 200 mA, requiring application derating. Active product status. ROHS3 compliant. Suitable only for applications operating at or below 200 mA per diode.

BAT54CLT1G (onsemi) Maintains identical diode configuration (1 pair common cathode), same package (SOT-23-3), and same reverse voltage (30 V). Current rating reduced to 200 mA, requiring application derating. Operating temperature maximum reduced to 125°C. Active product status. ROHS3 compliant. Suitable only for applications operating at or below 200 mA per diode and 125°C junction temperature.

BAT54CTA (Diodes Incorporated) Maintains identical diode configuration (1 pair common cathode), same package (SOT-23-3), and same reverse voltage (30 V). Current rating reduced to 200 mA, requiring application derating. Operating temperature maximum reduced to 125°C. Active product status. ROHS3 compliant. Suitable only for applications operating at or below 200 mA per diode and 125°C junction temperature.

Alternative Configuration (Different Package):

BAT30KFILM (STMicroelectronics) Maintains identical electrical specifications (30 V, 300 mA, Schottky technology). Package differs from main part (SOD-523 vs. SOT-23-3). Single diode configuration differs from main part (1 pair common cathode). Active product status. ROHS3 compliant. Suitable only for applications where single diode configuration and SOD-523 package are acceptable.

Not Recommended:

BAT754C,215 (NXP Semiconductors) Insufficient technical specifications provided for engineering evaluation. Bulk packaging format differs from standard cut tape or reel formats. Not suitable for standard procurement workflows.

Frequently Asked Questions (FAQ)

Q: Can BAT54CFILM directly replace BAT30CFILM in my application?

A: BAT54CFILM is electrically compatible for direct replacement. Both devices feature 1 pair common cathode configuration in SOT-23-3 package with 300 mA current rating. BAT54CFILM provides higher reverse voltage (40 V vs. 30 V), which is beneficial for voltage margin. Both are ROHS3 compliant with MSL 1. Verify that your application circuit does not depend on the specific forward voltage characteristics at your operating current.

Q: What is the difference between BAT30CFILM and PMEG3005CT,215?

A: Both devices share identical reverse voltage (30 V), diode configuration (1 pair common cathode), and package (SOT-23-3). PMEG3005CT,215 provides higher current rating (500 mA vs. 300 mA) and lower forward voltage (430 mV @ 500 mA vs. 530 mV @ 300 mA). PMEG3005CT,215 is suitable for applications requiring higher current capacity or lower power dissipation. Both are active products with ROHS3 compliance.

Q: Why do BAT54C-7-F, BAT54CLT1G, and BAT54CTA have lower current ratings?

A: These devices are rated for 200 mA per diode, compared to BAT30CFILM's 300 mA rating. These parts are classified as small signal devices with different speed characteristics. They are suitable only for applications operating at or below 200 mA per diode. Using these parts in applications designed for 300 mA operation requires circuit derating or redesign.

Q: Is BAT30KFILM a suitable substitute for BAT30CFILM?

A: BAT30KFILM shares identical electrical specifications (30 V, 300 mA, Schottky technology, 530 mV forward voltage). However, BAT30KFILM is a single diode device in SOD-523 package, whereas BAT30CFILM is a diode pair (common cathode) in SOT-23-3 package. BAT30KFILM is suitable only if your application circuit can accommodate single diode configuration and SOD-523 package footprint.

Q: What does "1 Pair Common Cathode" configuration mean?

A: This configuration contains two Schottky diodes within a single package with a shared cathode connection. The common cathode pin connects to both diodes' cathode terminals. This configuration is used in applications requiring dual diode functionality with a common return path. Substitutes must maintain this configuration unless circuit redesign is performed.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts listed are ROHS3 compliant. All devices also have MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: What is the significance of "Fast Recovery" vs. "Small Signal" speed classification?

A: BAT30CFILM is classified as fast recovery (≤ 500 ns) for currents > 200 mA. BAT54C-7-F, BAT54CLT1G, and BAT54CTA are classified as small signal (≤ 200 mA). Fast recovery devices have faster switching characteristics suitable for higher current applications. Small signal devices are optimized for lower current operation. Speed classification affects switching performance and should be verified against application requirements.

Q: Can I use PMEG3005CT,215 in place of BAT30CFILM if my application only requires 300 mA?

A: Yes. PMEG3005CT,215 is rated for 500 mA, which exceeds the 300 mA requirement. The device maintains identical reverse voltage (30 V), configuration (1 pair common cathode), and package (SOT-23-3). The higher current rating provides design margin. Forward voltage is lower (430 mV @ 500 mA), which may reduce power dissipation in your application.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in the following packaging formats: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Bulk. Cut Tape and Digi-Reel formats are standard for automated assembly. Tape & Reel format is suitable for high-volume production. Bulk format is available for BAT754C,215 but is not recommended for standard procurement due to insufficient technical documentation.

Q: Why is BAT30CFILM classified as obsolete?

A: BAT30CFILM is classified as obsolete product status, indicating that STMicroelectronics has discontinued active production and support. Active substitute parts are available with equivalent or superior electrical specifications. Procurement should transition to active alternatives such as BAT54CFILM or PMEG3005CT,215 for long-term design support and supply chain continuity.

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