BAT46FILM Equivalent & Substitute Parts

Part Overview

The BAT46FILM is a Schottky diode manufactured by STMicroelectronics, rated for 100 V DC reverse voltage with 150 mA average rectified current in a SOT-23-3 surface mount package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical performance characteristics while accommodating package and form factor differences in modern supply chains.

Substiute Parts

BAT46FILM

STMicroelectronicsIn Stock: 13152BAT46FILM Datasheet

Current PartRFQ

BAT46ZFILM

STMicroelectronicsIn Stock: 45262BAT46ZFILM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT46FILM is determined by equivalence in the following electrical parameters:

• Voltage - DC Reverse (Vr) (Max): 100 V
• Current - Average Rectified (Io): 150 mA
• Technology: Schottky
• Speed Classification: Small Signal ≤ 200mA (Io), Any Speed
• Operating Temperature - Junction (Max): 150°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The BAT46ZFILM qualifies as an equivalent substitute based on matching all critical electrical parameters. The primary difference is the package configuration: BAT46ZFILM uses SOD-123 surface mount packaging instead of SOT-23-3. Both parts share the same base product number (BAT46) and maintain identical voltage, current, and thermal specifications. The BAT46ZFILM is classified as active product status, providing supply continuity for the obsolete BAT46FILM.

Parameter Comparison

Engineering Selection Recommendations

The BAT46ZFILM is the qualified equivalent substitute for the obsolete BAT46FILM. Selection of BAT46ZFILM is supported by the following factors:

Electrical Equivalence: Both parts maintain identical voltage ratings (100 V DC reverse), current ratings (150 mA average rectified), reverse leakage characteristics (5 µA @ 75 V), and junction capacitance (10 pF @ 0V, 1MHz). These parameters ensure functional compatibility in circuit applications designed for the BAT46FILM.

Compliance Status: Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and manufacturing.

Supply Continuity: The BAT46ZFILM is classified as active product status with 45,225 pieces in stock, providing reliable supply availability compared to the obsolete BAT46FILM with no ongoing production.

Package Consideration: The BAT46ZFILM uses SOD-123 packaging instead of SOT-23-3. This difference requires PCB layout modification and is the primary design consideration for substitution. Both packages are standard surface mount configurations with established manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can BAT46ZFILM directly replace BAT46FILM without circuit modification?

A: Electrical substitution is valid; however, PCB layout modification is required due to package differences. BAT46FILM uses SOT-23-3 (TO-236-3, SC-59) packaging, while BAT46ZFILM uses SOD-123 packaging. Footprint, lead spacing, and component placement differ between these packages.

Q: Are the forward voltage characteristics identical between these parts?

A: Forward voltage is specified at different test conditions. BAT46FILM specifies 450 mV maximum at 10 mA, while BAT46ZFILM specifies 1 V maximum at 250 mA. Both specifications are within acceptable Schottky diode performance ranges for the 100 V, 150 mA rating class.

Q: What is the significance of the product status difference?

A: BAT46FILM is obsolete with no ongoing manufacturing. BAT46ZFILM is active product with current production and supply availability. For new designs and production continuity, BAT46ZFILM is the appropriate selection.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both BAT46FILM and BAT46ZFILM are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1 - Unlimited). Compliance certifications are equivalent.

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

A: Substitution is determined by matching voltage rating (100 V DC reverse), current rating (150 mA average rectified), reverse leakage (5 µA @ 75 V), junction capacitance (10 pF @ 0V, 1MHz), and maximum junction temperature (150°C). All these parameters are identical between BAT46FILM and BAT46ZFILM.

Q: Are there any thermal performance differences?

A: Both parts specify identical maximum junction temperature of 150°C. Thermal performance characteristics are equivalent.