BAT46CWFILM Equivalent & Substitute Parts

Part Overview

The BAT46CWFILM is a Schottky diode array manufactured by STMicroelectronics, configured as 1 pair common cathode with a maximum reverse voltage of 100 V and average rectified current of 150 mA per diode. The device is housed in an SC-70, SOT-323 surface mount package. This part is classified as obsolete, necessitating identification of active equivalent components for ongoing design requirements and procurement continuity.

Substiute Parts

BAT46CWFILM

STMicroelectronicsIn Stock: 6358BAT46CWFILM Datasheet

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BAV70WT1G

onsemiIn Stock: 305311BAV70WT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT46CWFILM is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Diode configuration must be 1 pair common cathode
• Maximum reverse voltage (Vr) must be equal to or greater than 100 V
• Average rectified current (Io) per diode must be equal to or greater than 150 mA
• Operating temperature range must accommodate the application's thermal requirements

Mechanical Compatibility Requirements:

• Package type must be SC-70 or SOT-323 (equivalent surface mount packages)
• Mounting type must be surface mount
• Pin configuration must be compatible with existing PCB layouts

Regulatory and Quality Requirements:

• RoHS3 compliance is required
• Moisture sensitivity level must be 1 (Unlimited) or equivalent
• Product status should be active to ensure long-term availability

The BAV70WT1G meets all substitution criteria and is classified as an active product, providing design continuity and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

The BAV70WT1G is a direct functional substitute for the BAT46CWFILM. Both components share identical package specifications (SC-70, SOT-323), diode configuration (1 pair common cathode), and maximum reverse voltage rating (100 V). The BAV70WT1G provides higher average rectified current capacity (200 mA versus 150 mA), ensuring adequate performance margin in applications designed for the BAT46CWFILM.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), satisfying regulatory and environmental requirements. The BAV70WT1G is classified as an active product with substantial inventory availability, eliminating supply chain risk associated with the obsolete BAT46CWFILM.

The primary electrical difference is forward voltage characteristics: the BAT46CWFILM exhibits lower forward voltage (450 mV @ 10 mA) due to Schottky technology, while the BAV70WT1G uses standard diode technology (1.25 V @ 150 mA). Circuit designs sensitive to forward voltage drop require verification of performance impact, though the higher current rating of the BAV70WT1G provides operational flexibility.

Frequently Asked Questions (FAQ)

Q: Can the BAV70WT1G directly replace the BAT46CWFILM in existing designs?

A: The BAV70WT1G is mechanically and electrically compatible with the BAT46CWFILM. Both components use identical SC-70, SOT-323 packages and share the same pin configuration for 1 pair common cathode diode arrays. The BAV70WT1G's higher current rating (200 mA versus 150 mA) and lower reverse leakage current provide equivalent or superior performance in applications designed for the BAT46CWFILM.

Q: What are the key differences between these two parts?

A: The primary differences are technology type and forward voltage characteristics. The BAT46CWFILM uses Schottky technology with lower forward voltage (450 mV @ 10 mA), while the BAV70WT1G uses standard diode technology with higher forward voltage (1.25 V @ 150 mA). The BAV70WT1G provides higher average rectified current capacity (200 mA) and lower reverse leakage current (1 µA @ 100 V). The BAV70WT1G is an active product, whereas the BAT46CWFILM is obsolete.

Q: Are there any package or mounting considerations for substitution?

A: Both parts are surface mount devices in SC-70, SOT-323 packages with identical pin configurations. No PCB layout modifications are required for substitution. Both components have unlimited moisture sensitivity level (MSL 1), requiring no special handling differences.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the BAT46CWFILM and BAV70WT1G are ROHS3 compliant and REACH unaffected. Both carry the same ECCN (EAR99) and HTSUS classification (8541.10.0070), ensuring equivalent regulatory status for procurement and export purposes.

Q: What is the impact of forward voltage differences on circuit performance?

A: The BAT46CWFILM's lower forward voltage (450 mV @ 10 mA) results in reduced power dissipation compared to the BAV70WT1G (1.25 V @ 150 mA). Applications requiring minimal forward voltage drop should evaluate the specific operating conditions. The BAV70WT1G's higher current rating provides design margin and may reduce thermal stress in high-current applications.