BAT41WFILM Equivalent & Substitute Parts

Part Overview

The BAT41WFILM is a Schottky diode manufactured by STMicroelectronics, rated for 100 V DC reverse voltage and 200 mA average rectified current in a surface mount SOT-323 package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and production continuity. Equivalent parts maintain identical or compatible electrical specifications while offering active product status or alternative packaging configurations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 200 mA	V
Current - Reverse Leakage @ Vr	100 nA @ 50 V	nA
Capacitance @ Vr, F	10 pF @ 1 V, 1 MHz	pF
Operating Temperature - Junction (Max)	150	°C
Technology	Schottky	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BAT41WFILM are identified based on strict electrical and mechanical parameter compatibility. The primary substitution criteria are:

Electrical Compatibility Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 200 mA minimum
Voltage - Forward (Vf) (Max): 1 V or lower at rated current
Technology: Schottky diode classification
Operating Temperature - Junction: 150°C maximum

Mechanical Compatibility Parameters:

Mounting Type: Surface Mount
Package compatibility: SOT-323 or equivalent footprint
RoHS and environmental compliance: ROHS3 Compliant

Substitute parts BAT41KFILM and BAT46WFILM satisfy these criteria with variations in packaging format and specific electrical characteristics within acceptable ranges.

Parameter Comparison

Parameter	BAT41WFILM (Main)	BAT41KFILM (Substitute)	BAT46WFILM (Substitute)
Manufacturer	STMicroelectronics	STMicroelectronics	STMicroelectronics
Technology	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	200 mA	200 mA	150 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 200 mA	1 V @ 200 mA	1 V @ 250 mA
Current - Reverse Leakage @ Vr	100 nA @ 50 V	100 nA @ 50 V	5 µA @ 75 V
Capacitance @ Vr, F	10 pF @ 1 V, 1 MHz	10 pF @ 1 V, 1 MHz	10 pF @ 0 V, 1 MHz
Operating Temperature - Junction (Max)	150°C	150°C	150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-70, SOT-323	SC-79, SOD-523	SC-70, SOT-323
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

BAT41KFILM provides direct electrical equivalence to the BAT41WFILM with identical reverse voltage (100 V), average rectified current (200 mA), forward voltage (1 V @ 200 mA), and reverse leakage characteristics (100 nA @ 50 V). The primary difference is packaging: BAT41KFILM uses SOD-523 (SC-79) package format versus SOT-323 (SC-70) for the main part. BAT41KFILM maintains active product status and ROHS3 compliance. Selection of BAT41KFILM requires PCB footprint redesign to accommodate the SOD-523 package.

BAT46WFILM maintains the same reverse voltage rating (100 V), operating temperature (150°C), and package format (SOT-323) as the BAT41WFILM. However, BAT46WFILM is rated for 150 mA average rectified current, which is lower than the 200 mA specification of the main part. BAT46WFILM exhibits higher reverse leakage current (5 µA @ 75 V) compared to BAT41WFILM (100 nA @ 50 V). BAT46WFILM is suitable for applications where the 150 mA current rating is sufficient and where increased reverse leakage is acceptable. BAT46WFILM maintains active product status and ROHS3 compliance.

Both substitute parts satisfy RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity requirements, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can BAT41KFILM directly replace BAT41WFILM without PCB modification?

A: No. While BAT41KFILM provides identical electrical specifications, it uses a different package format (SOD-523 versus SOT-323). PCB footprint redesign is required for BAT41KFILM implementation.

Q: Is BAT46WFILM a suitable substitute for applications requiring 200 mA current?

A: BAT46WFILM is rated for 150 mA average rectified current, which is below the 200 mA specification of BAT41WFILM. BAT46WFILM is suitable only for applications where the actual circuit current requirement does not exceed 150 mA.

Q: What is the primary difference between BAT41KFILM and BAT46WFILM?

A: BAT41KFILM maintains full electrical equivalence to BAT41WFILM (200 mA rating, 100 nA reverse leakage) but uses SOD-523 packaging. BAT46WFILM uses the same SOT-323 package as BAT41WFILM but has reduced current rating (150 mA) and higher reverse leakage (5 µA @ 75 V).

Q: Are all three parts RoHS3 compliant?

A: Yes. BAT41WFILM, BAT41KFILM, and BAT46WFILM are all ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity level.

Q: Why is BAT41WFILM listed as obsolete?

A: BAT41WFILM is classified as obsolete by the manufacturer. BAT41KFILM and BAT46WFILM are active products and represent current manufacturing alternatives.

Q: Can BAT41KFILM and BAT46WFILM be used interchangeably in the same circuit?

A: No. BAT41KFILM and BAT46WFILM have different package formats and electrical specifications. Selection depends on specific circuit requirements for current rating, reverse leakage, and PCB layout constraints.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message