BAT30WFILM Equivalent & Substitute Parts

Part Overview

The BAT30WFILM is a Schottky diode manufactured by STMicroelectronics, rated for 30V DC reverse voltage and 300mA average rectified current in a surface mount SOT-323 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The BAT30WFILM features fast recovery characteristics with a maximum forward voltage of 530mV at 300mA and operates at junction temperatures up to 150°C.

Substiute Parts

BAT30WFILM

STMicroelectronicsIn Stock: 744BAT30WFILM Datasheet

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1PS70SB10,115

Nexperia USA Inc.In Stock: 512531PS70SB10,115 Datasheet

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1SS401(TE85L,F)

Toshiba Semiconductor and StorageIn Stock: 56881SS401(TE85L,F) Datasheet

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BAT54W-7-F

Diodes IncorporatedIn Stock: 23224BAT54W-7-F Datasheet

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BAT54WQ-7-F

Diodes IncorporatedIn Stock: 98370BAT54WQ-7-F Datasheet

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BAT754,215

Nexperia USA Inc.In Stock: 8711BAT754,215 Datasheet

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PMEG3005ET,215

Nexperia USA Inc.In Stock: 5402PMEG3005ET,215 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT30WFILM is determined by the following critical parameters: voltage rating (30V DC reverse), current capacity (300mA average rectified), package type (SOT-323), and recovery speed characteristics (fast recovery). Substitute parts are grouped into two categories based on these constraints:

Category 1: Direct Functional Equivalents (30V, 300mA, Fast Recovery, SOT-323) Parts that maintain the same voltage rating, current capacity, recovery speed, and package form factor. These substitutes provide equivalent electrical performance for applications requiring the full 300mA current rating with fast recovery characteristics.

Category 2: Voltage and Package Compatible Substitutes (30V, Reduced Current, SOT-323) Parts that maintain the 30V voltage rating and SOT-323 package but operate at reduced current ratings (200mA). These substitutes are suitable for applications where the full 300mA capacity is not required. Current reduction from 300mA to 200mA represents a design constraint that must be evaluated against circuit requirements.

Category 3: Voltage Compatible, Package Variant Substitutes (30V, Higher Current, TO-236AB) Parts that maintain the 30V voltage rating but use an alternative surface mount package (TO-236AB instead of SOT-323). These substitutes offer higher current capacity (500mA) and are suitable for applications where package footprint change is acceptable.

Category 4: Voltage Compatible, Current Matched, Package Variant Substitutes (20V, 300mA, SC-70) Parts that match the 300mA current capacity and fast recovery speed but operate at a reduced voltage rating (20V instead of 30V). These substitutes are suitable only for applications where the maximum reverse voltage requirement does not exceed 20V.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance and Package): No substitute part maintains all electrical characteristics (30V, 300mA, fast recovery ≤ 500ns) in the SOT-323 package. The PMEG3005ET,215 provides superior current capacity (500mA) and lower forward voltage (430mV) but requires package change to TO-236AB.

For Reduced Current Applications (30V, 200mA, SOT-323): The 1PS70SB10,115 (Nexperia, Active, AEC-Q100 qualified) and BAT54WQ-7-F (Diodes Incorporated, Active, AEC-Q101 qualified) both maintain 30V rating and SOT-323 package with 200mA current capacity. The 1PS70SB10,115 offers lower forward voltage (800mV @ 100mA) and lower reverse leakage (2µA @ 25V). The BAT54WQ-7-F provides automotive qualification (AEC-Q101) with extended temperature range (-65°C to 125°C).

For Voltage-Reduced Applications (20V, 300mA, Fast Recovery): The 1SS401(TE85L,F) (Toshiba, Active) matches the 300mA current and fast recovery characteristics but operates at 20V maximum reverse voltage. This substitute is suitable only for applications where reverse voltage does not exceed 20V. Forward voltage is lower (450mV @ 300mA) compared to the BAT30WFILM.

For Higher Current Capacity (30V, 500mA, TO-236AB): The PMEG3005ET,215 (Nexperia, Active) provides the highest current capacity (500mA) with 30V rating and fast recovery characteristics. This part requires PCB layout modification due to TO-236AB package versus SOT-323 original.

Compliance Considerations: All substitute parts are RoHS3 compliant and REACH unaffected. The 1PS70SB10,115 and BAT754,215 carry AEC-Q100 automotive qualification. The BAT54WQ-7-F carries AEC-Q101 automotive qualification. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can the 1PS70SB10,115 directly replace the BAT30WFILM in all applications? A: The 1PS70SB10,115 maintains the 30V voltage rating and SOT-323 package but operates at 200mA instead of 300mA. Direct replacement is possible only in applications where the circuit current requirement does not exceed 200mA. Verify circuit current specifications before substitution.

Q: What is the primary difference between the BAT54W-7-F and BAT54WQ-7-F? A: Both parts are electrically identical (30V, 200mA, SOT-323) with identical forward voltage and reverse leakage specifications. The BAT54WQ-7-F carries AEC-Q101 automotive qualification, while the BAT54W-7-F carries standard qualification. Selection depends on automotive compliance requirements.

Q: Why does the PMEG3005ET,215 have a different package than the BAT30WFILM? A: The PMEG3005ET,215 uses TO-236AB package instead of SOT-323. This package change accommodates the higher current rating (500mA versus 300mA). PCB layout and footprint modifications are required for this substitution.

Q: Is the 1SS401(TE85L,F) suitable for all BAT30WFILM applications? A: The 1SS401(TE85L,F) matches the 300mA current and fast recovery speed but operates at 20V maximum reverse voltage. This substitute is suitable only for applications where the reverse voltage requirement does not exceed 20V. Applications requiring 30V reverse voltage rating cannot use this part.

Q: What are the temperature operating range differences among substitutes? A: The BAT30WFILM operates to 150°C junction temperature. The PMEG3005ET,215 also operates to 150°C. The BAT754,215, 1SS401(TE85L,F), BAT54W-7-F, and BAT54WQ-7-F operate to 125°C maximum junction temperature. Applications requiring operation above 125°C must use PMEG3005ET,215 or verify the original BAT30WFILM availability.

Q: Are all substitute parts available in high volume? A: Inventory availability varies. The BAT54WQ-7-F has the highest inventory (98,300 pcs), followed by 1PS70SB10,115 (51,200 pcs) and BAT54W-7-F (23,200 pcs). The PMEG3005ET,215 has lower inventory (5,391 pcs). Verify current stock levels with suppliers for production requirements.

Q: What is the significance of "Fast Recovery" versus "Small Signal" speed classification? A: Fast Recovery (≤ 500ns for currents > 200mA) applies to the BAT30WFILM, PMEG3005ET,215, and 1SS401(TE85L,F). Small Signal (≤ 200mA, Any Speed) applies to 1PS70SB10,115, BAT754,215, BAT54W-7-F, and BAT54WQ-7-F. Fast Recovery diodes are optimized for high-frequency switching applications. Small Signal diodes are suitable for low-current signal applications. Application switching frequency determines which classification is appropriate.

Q: Can the BAT754,215 replace the BAT30WFILM despite the package difference? A: The BAT754,215 uses TO-236AB package instead of SOT-323 and operates at 200mA instead of 300mA. Replacement requires both PCB layout modification and verification that circuit current does not exceed 200mA. The lower maximum junction temperature (125°C versus 150°C) must also be considered.