BAT46CFILM Equivalent & Substitute Parts

Part Overview

The BAT46CFILM is a Schottky diode array in a 1 Pair Common Cathode configuration manufactured by STMicroelectronics. This component is rated for 100 V DC reverse voltage with 150 mA average rectified current per diode and is housed in a SOT-23-3 surface mount package. The BAT46CFILM is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and procurement needs.

Substiute Parts

BAT46CFILM

STMicroelectronicsIn Stock: 5676BAT46CFILM Datasheet

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BAT46ZFILM

STMicroelectronicsIn Stock: 45262BAT46ZFILM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT46CFILM is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): 100 V minimum
• Current - Average Rectified (Io): 150 mA minimum per diode
• Technology: Schottky diode
• Current - Reverse Leakage @ Vr: 5 µA @ 75 V maximum
• Operating Temperature - Junction: 150°C maximum

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Base Product Number: BAT46 series
• RoHS Status: ROHS3 Compliant

The BAT46ZFILM qualifies as a substitute based on matching all electrical parameters and maintaining RoHS3 compliance. The primary difference is packaging format: BAT46CFILM uses SOT-23-3 (Tape & Reel), while BAT46ZFILM uses SOD-123 (Cut Tape & Digi-Reel®). Both components share identical voltage ratings, current ratings, reverse leakage specifications, and temperature ratings.

Parameter Comparison

Engineering Selection Recommendations

The BAT46ZFILM is the direct electrical equivalent to the BAT46CFILM. Both components are manufactured by STMicroelectronics and share identical voltage ratings (100 V), current ratings (150 mA), reverse leakage characteristics (5 µA @ 75 V), and maximum junction temperature (150°C). Both maintain ROHS3 compliance and MSL Level 1 classification.

The BAT46ZFILM is currently in active production status, whereas the BAT46CFILM is obsolete. This makes BAT46ZFILM the appropriate selection for new designs and ongoing procurement requirements. The primary design consideration is the package change from SOT-23-3 to SOD-123, which requires PCB layout modification but does not affect electrical performance.

Frequently Asked Questions (FAQ)

Q: Can BAT46ZFILM directly replace BAT46CFILM in existing designs?

A: BAT46ZFILM is electrically equivalent to BAT46CFILM across all critical parameters: reverse voltage (100 V), rectified current (150 mA), reverse leakage (5 µA @ 75 V), and junction temperature rating (150°C). However, the package differs: BAT46CFILM uses SOT-23-3 while BAT46ZFILM uses SOD-123. PCB layout and footprint modifications are required for physical substitution.

Q: What is the difference between SOT-23-3 and SOD-123 packages?

A: SOT-23-3 and SOD-123 are both surface mount packages for diodes but have different physical dimensions and pin configurations. SOT-23-3 is a three-lead package, while SOD-123 is a two-lead package. Component placement and routing on the PCB must be adjusted accordingly.

Q: Are there compliance differences between BAT46CFILM and BAT46ZFILM?

A: Both components are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity classification. No compliance differences exist between the two parts.

Q: Why is BAT46CFILM listed as obsolete?

A: BAT46CFILM is classified as obsolete by the manufacturer. BAT46ZFILM is the active production equivalent and should be used for new designs and procurement.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: Voltage - DC Reverse (Vr) of 100 V minimum, Current - Average Rectified (Io) of 150 mA minimum, Schottky technology, reverse leakage of 5 µA @ 75 V maximum, and operating temperature rating of 150°C maximum. All parameters must be met or exceeded for valid substitution.

Q: Can BAT46ZFILM handle the same power dissipation as BAT46CFILM?

A: Both components share identical maximum junction temperature (150°C) and current ratings (150 mA). Power dissipation capability depends on thermal management in the specific application circuit. The different packages may have different thermal characteristics, which should be evaluated for the target application.