BAT46AFILM Equivalent & Substitute Parts

Part Overview

The BAT46AFILM is a Schottky diode array manufactured by STMicroelectronics, configured as 1 pair common anode with a maximum reverse voltage rating of 100 V and average rectified current of 150 mA per diode. The device is packaged in SOT-23-3 (TO-236-3, SC-59) surface mount configuration. The BAT46AFILM is classified as obsolete product status, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement continuity.

Substiute Parts

BAT46AFILM

STMicroelectronicsIn Stock: 4436BAT46AFILM Datasheet

Current PartRFQ

BAT46ZFILM

STMicroelectronicsIn Stock: 45262BAT46ZFILM Datasheet

SimilarRFQ

BAR46AFILM

STMicroelectronicsIn Stock: 16907BAR46AFILM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAT46AFILM is determined by the following critical parameters:

Electrical Parameters:

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

Mechanical Parameters:

• Diode Configuration: 1 Pair Common Anode
• Mounting Type: Surface Mount
• Package / Case: TO-236-3, SC-59, SOT-23-3

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories:

Category 1 - Parametric Equivalent (BAR46AFILM): Identical electrical specifications, diode configuration, and package type. Direct pin-compatible replacement with active product status.

Category 2 - Similar Substitute (BAT46ZFILM): Identical electrical specifications and base product series. Different package type (SOD-123 vs. SOT-23-3) and product status (active). Requires PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

BAR46AFILM - Recommended Primary Substitute

The BAR46AFILM is the optimal substitute for the obsolete BAT46AFILM. This part maintains identical electrical specifications across all critical parameters: 100 V reverse voltage rating, 150 mA average rectified current per diode, 450 mV forward voltage at 10 mA, and 5 µA reverse leakage current at 75 V. The diode configuration remains 1 pair common anode, and the package type is identical SOT-23-3. The BAR46AFILM carries active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant with MSL 1 rating. No circuit modifications or PCB layout changes are required for this substitution.

BAT46ZFILM - Alternative Substitute with Design Considerations

The BAT46ZFILM provides electrical equivalence in terms of reverse voltage, average rectified current, and reverse leakage specifications. However, this part differs in two significant aspects: package type (SOD-123 vs. SOT-23-3) and diode configuration (single diode vs. 1 pair common anode). The BAT46ZFILM is classified as active product status. Selection of this substitute requires PCB layout redesign to accommodate the different package footprint and circuit topology modification to address the single diode configuration. Forward voltage characteristics differ at the specified test point (1 V @ 250 mA vs. 450 mV @ 10 mA). This substitute is applicable only when design flexibility permits package and circuit topology changes.

Frequently Asked Questions (FAQ)

Q: Can BAR46AFILM be used as a direct replacement for BAT46AFILM without any modifications?

A: Yes. The BAR46AFILM is a parametric equivalent with identical electrical specifications, diode configuration (1 pair common anode), and package type (SOT-23-3). No circuit modifications or PCB layout changes are required. The part is pin-compatible and functionally equivalent.

Q: What is the primary difference between BAT46ZFILM and BAT46AFILM?

A: The BAT46ZFILM uses a different package type (SOD-123) compared to the BAT46AFILM (SOT-23-3). Additionally, the BAT46ZFILM is a single diode configuration, whereas the BAT46AFILM is a 1 pair common anode diode array. These differences require PCB layout redesign and circuit topology modification.

Q: Are all three parts (BAT46AFILM, BAR46AFILM, BAT46ZFILM) RoHS compliant?

A: Yes. All three parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability standards.

Q: Why is BAT46AFILM classified as obsolete?

A: The BAT46AFILM is listed as obsolete product status. The BAR46AFILM, with identical specifications and active status, is the recommended replacement to ensure continued availability and supply chain reliability.

Q: Can BAT46ZFILM be used in applications requiring a diode array configuration?

A: No. The BAT46ZFILM is a single diode device, not a diode array. Applications requiring 1 pair common anode configuration must use either BAT46AFILM or BAR46AFILM. The BAT46ZFILM is suitable only for applications requiring a single Schottky diode with 100 V reverse voltage and 150 mA current rating.

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

A: The critical parameters are: Voltage - DC Reverse (Vr) (Max) of 100 V, Current - Average Rectified (Io) of 150 mA per diode, Schottky technology, Current - Reverse Leakage of 5 µA @ 75 V, and Operating Temperature - Junction (Max) of 150°C. Additionally, diode configuration and package type must match the application requirements.

Q: Are there any compliance or certification differences between the substitute parts?

A: No. All three parts share identical compliance status: ROHS3 compliant, MSL 1 (Unlimited), REACH unaffected, and EAR99 ECCN classification.