BAT30AFILM Equivalent & Substitute Parts

Part Overview

The BAT30AFILM is a Schottky diode array manufactured by STMicroelectronics, configured as 1 pair common anode 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 and features fast recovery characteristics with a maximum forward voltage of 530 mV at 300 mA.

The BAT30AFILM is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Substitute parts must maintain electrical compatibility within the specified parameter ranges while accommodating packaging and performance variations.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Anode	—
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	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 30 V
Operating Temperature - Junction (Max)	150	°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

Substitution of the BAT30AFILM is determined by the following critical parameters:

Primary Compatibility Criteria:

Diode configuration (1 Pair Common Anode)
Technology (Schottky)
Maximum reverse voltage (30 V minimum)
Average rectified current per diode (300 mA minimum for direct replacement; 200 mA for reduced-current applications)
Surface mount packaging in SOT-23-3 form factor
RoHS3 compliance and MSL 1 rating

Substitution Groups:

Group 1: Direct Electrical Equivalents (300 mA Rating)

BAT30KFILM: Identical electrical specifications with alternative packaging (SOD-523)
BAT54AFILM: Higher voltage rating (40 V) with identical current and configuration, same SOT-23-3 package

Group 2: Reduced-Current Alternatives (200 mA Rating)

BAT54A-7-F (Diodes Incorporated): 200 mA per diode, 30 V rating, SOT-23-3 package
BAT54ALT1G (onsemi): 200 mA per diode, 30 V rating, SOT-23-3 package
BAT54TA (Diodes Incorporated): 200 mA per diode, 30 V rating, SOT-23-3 package
BAT754A,215 (Nexperia USA Inc.): 200 mA per diode, 30 V rating, SOT-23-3 package, automotive qualified

All substitute parts maintain the 1 Pair Common Anode configuration, Schottky technology, and surface mount SOT-23-3 packaging. Reduced-current alternatives are suitable for applications where the full 300 mA per diode specification is not required.

Parameter Comparison

Parameter	BAT30AFILM	BAT30KFILM	BAT54AFILM	BAT54A-7-F	BAT54ALT1G	BAT54TA	BAT754A,215
Manufacturer	STMicroelectronics	STMicroelectronics	STMicroelectronics	Diodes Incorporated	onsemi	Diodes Incorporated	Nexperia USA Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Diode Configuration	1 Pair Common Anode	Single Diode	1 Pair Common Anode	1 Pair Common Anode	1 Pair Common Anode	Single Diode	1 Pair Common Anode
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)	300 mA	300 mA	300 mA	200 mA	200 mA	200 mA	200 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	400 mV @ 10 mA	600 mV @ 100 mA
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed	Small Signal ≤ 200mA, Any Speed
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	2 µA @ 25 V
Operating Temperature - Junction (Max)	150°C	150°C	150°C	150°C	150°C	125°C	125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Automotive Grade	—	—	—	—	—	—	AEC-Q100

Engineering Selection Recommendations

For Direct Replacement (300 mA Applications):

BAT30KFILM is the primary equivalent for BAT30AFILM. Both devices are manufactured by STMicroelectronics with identical electrical specifications (30 V, 300 mA, 530 mV forward voltage). BAT30KFILM is currently in active production status, ensuring long-term availability. The primary difference is packaging: BAT30KFILM uses SOD-523 form factor instead of SOT-23-3. This substitution is suitable only if PCB layout accommodates the alternative package footprint.

BAT54AFILM provides an alternative with higher voltage rating (40 V) while maintaining 300 mA current capacity and identical SOT-23-3 packaging. This part is suitable for applications where increased voltage margin is beneficial. BAT54AFILM is in active production status.

For Reduced-Current Applications (200 mA or Less):

BAT54A-7-F, BAT54ALT1G, BAT54TA, and BAT754A,215 are all suitable substitutes for applications requiring 200 mA or less per diode. All maintain the 30 V reverse voltage rating, 1 Pair Common Anode configuration, and SOT-23-3 packaging. All are in active production status with RoHS3 compliance and MSL 1 rating.

BAT754A,215 is qualified to AEC-Q100 automotive standards and is recommended for automotive applications requiring component traceability and qualification documentation.

Compliance Considerations:

All substitute parts maintain RoHS3 compliance and MSL 1 (unlimited moisture sensitivity) rating, matching the original BAT30AFILM specifications. All parts carry EAR99 ECCN classification and REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can BAT30KFILM directly replace BAT30AFILM in existing designs?

A: BAT30KFILM provides identical electrical specifications (30 V, 300 mA, 530 mV forward voltage) and is manufactured by the same supplier (STMicroelectronics). However, BAT30KFILM uses SOD-523 packaging instead of SOT-23-3. Direct PCB substitution is not possible without layout modification. Electrical performance is equivalent.

Q: What is the difference between BAT54AFILM and BAT30AFILM?

A: BAT54AFILM has a higher maximum reverse voltage rating (40 V versus 30 V) while maintaining identical current capacity (300 mA) and forward voltage characteristics. Both use SOT-23-3 packaging and 1 Pair Common Anode configuration. BAT54AFILM is suitable for applications where additional voltage margin is required.

Q: Can I use 200 mA rated parts (BAT54A-7-F, BAT54ALT1G, BAT54TA, BAT754A,215) in place of the 300 mA BAT30AFILM?

A: These parts are suitable only for applications where the circuit operates at 200 mA or below per diode. If the design requires the full 300 mA capability, these reduced-current alternatives are not appropriate. All maintain 30 V reverse voltage rating and SOT-23-3 packaging.

Q: Which substitute part is recommended for automotive applications?

A: BAT754A,215 is qualified to AEC-Q100 automotive standards and is the appropriate choice for automotive applications. This part maintains 30 V reverse voltage, 200 mA current rating, 1 Pair Common Anode configuration, and SOT-23-3 packaging.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (BAT30KFILM, BAT54AFILM, BAT54A-7-F, BAT54ALT1G, BAT54TA, BAT754A,215) are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity level, matching the original BAT30AFILM specifications.

Q: What is the difference in forward voltage between BAT30AFILM and the substitute parts?

A: BAT30AFILM specifies 530 mV maximum forward voltage at 300 mA. BAT30KFILM matches this specification. BAT54AFILM specifies 900 mV at 100 mA. The 200 mA alternatives vary: BAT54A-7-F and BAT54ALT1G specify 800 mV at 100 mA; BAT54TA specifies 400 mV at 10 mA; BAT754A,215 specifies 600 mV at 100 mA. Forward voltage specifications are measured at different current levels and are not directly comparable across parts.

Q: What is the reverse leakage current specification for substitute parts?

A: BAT30AFILM specifies 5 µA at 30 V. BAT30KFILM matches this specification. BAT54AFILM specifies 1 µA at 30 V (lower leakage). The 200 mA alternatives specify 2 µA at 25 V (BAT54A-7-F, BAT54ALT1G, BAT754A,215) or 4 µA at 25 V (BAT54TA). Lower reverse leakage is generally beneficial for circuit performance.

Q: Can I use multiple BAT54TA devices in parallel to achieve 300 mA capacity?

A: Parallel operation of diodes requires careful circuit design to ensure current sharing. This is an application-specific consideration beyond the scope of direct part substitution. Consult circuit design guidelines for parallel diode operation.

Q: What is the operating temperature range for substitute parts?

A: BAT30AFILM specifies maximum junction temperature of 150°C. BAT30KFILM and BAT54AFILM also specify 150°C maximum. BAT54A-7-F and BAT54ALT1G specify 150°C maximum. BAT54TA and BAT754A,215 specify 125°C maximum. Temperature range specifications vary by manufacturer and part number.

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