BAS40-05-7-F-79 Equivalent & Substitute Parts

Part Overview

The BAS40-05-7-F-79 is a Schottky diode array in a 1 Pair Common Cathode configuration, rated for 40 V DC reverse voltage and 200 mA average rectified current per diode. Manufactured by Diodes Incorporated, this component is packaged in a Surface Mount TO-236-3 (SOT-23-3) package. The part is currently listed as Obsolete, which necessitates identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

BAS40-05-7-F-79

Diodes IncorporatedIn Stock: 1186BAS40-05-7-F-79 Datasheet

Current PartRFQ

BAS40-05-7-F

Diodes IncorporatedIn Stock: 47424BAS40-05-7-F Datasheet

Parametric EquivalentRFQ

BAS40-05Q-7-F

Diodes IncorporatedIn Stock: 3511BAS40-05Q-7-F Datasheet

Parametric EquivalentRFQ

BAS40-05-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 9498BAS40-05-E3-08 Datasheet

Parametric EquivalentRFQ

BAS40-05-HF

Comchip TechnologyIn Stock: 1252BAS40-05-HF Datasheet

Parametric EquivalentRFQ

BAS40-05-TP

Micro Commercial CoIn Stock: 3607BAS40-05-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAS40-05-7-F-79 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io) (per Diode): 200 mA (DC)
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 40 mA
• Reverse Recovery Time (trr): 5 ns

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: TO-236-3, SC-59, SOT-23-3

Compliance Parameters (Must Match):

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

All identified substitute parts maintain these core parameters. Variations in reverse leakage current (within the range of 100–200 nA @ 30 V) and maximum junction temperature (125°C or -55°C ~ 125°C) do not preclude substitution, as these represent acceptable operational tolerances within the specified electrical envelope.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BAS40-05-7-F

The BAS40-05-7-F from Diodes Incorporated is the direct parametric equivalent to the obsolete BAS40-05-7-F-79. This part maintains identical electrical specifications and is currently in Active product status with substantial inventory availability (47,400 units). The only difference is packaging format (Tape & Reel versus the original packaging designation), which does not affect electrical or mechanical compatibility. This part is ROHS3 compliant and carries MSL 1 rating.

Secondary Recommendation: BAS40-05Q-7-F

The BAS40-05Q-7-F from Diodes Incorporated is an Active equivalent with identical electrical parameters. This variant includes AEC-Q101 automotive qualification, making it suitable for applications requiring automotive-grade components. Inventory availability is 3,431 units. Selection of this part is appropriate when automotive qualification is a system requirement.

Tertiary Recommendation: BAS40-05-E3-08

The BAS40-05-E3-08 from Vishay General Semiconductor - Diodes Division is an Active equivalent with identical electrical parameters except for reverse leakage current (100 nA @ 30 V versus 200 nA @ 30 V). This lower leakage specification represents improved performance within the acceptable operational envelope. Inventory availability is 9,400 units. This part is ROHS3 compliant with MSL 1 rating.

Alternative Recommendations: BAS40-05-HF and BAS40-05-TP

The BAS40-05-HF from Comchip Technology and BAS40-05-TP from Micro Commercial Co are both Active equivalents with identical electrical parameters to the original part. Both maintain ROHS3 compliance and MSL 1 rating. These parts are suitable for applications where multi-source component strategy is required.

All substitute parts are Surface Mount components in SOT-23-3 package configuration and are compatible with existing PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can BAS40-05-7-F be used as a direct replacement for BAS40-05-7-F-79?

A: Yes. The BAS40-05-7-F is a parametric equivalent with identical electrical specifications (40 V reverse voltage, 200 mA current rating, 1 V forward voltage, 5 ns recovery time) and identical mechanical packaging (SOT-23-3). The only difference is the packaging format designation (Tape & Reel), which does not affect circuit performance or PCB assembly compatibility.

Q: What is the difference between BAS40-05Q-7-F and BAS40-05-7-F?

A: Both parts are parametrically identical in electrical performance. The BAS40-05Q-7-F includes AEC-Q101 automotive qualification, making it suitable for automotive applications. Selection between these parts depends on whether automotive qualification is required by the application specification.

Q: Why does BAS40-05-E3-08 show lower reverse leakage current?

A: The BAS40-05-E3-08 from Vishay specifies 100 nA @ 30 V reverse leakage compared to 200 nA @ 30 V for other variants. This represents a tighter specification and improved performance characteristic. The part remains fully compatible as it operates within the acceptable electrical envelope for this component category.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original BAS40-05-7-F-79.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts are Surface Mount components in TO-236-3 (SOT-23-3) package configuration with identical pin assignments and footprints. They are mechanically and electrically interchangeable on existing PCB designs without layout modification.

Q: Which substitute part should be selected for new designs?

A: For new designs, BAS40-05-7-F (Diodes Incorporated) is recommended as the primary choice due to active product status, high inventory availability, and established supply chain. For automotive applications, BAS40-05Q-7-F is appropriate. For applications requiring lower reverse leakage specifications, BAS40-05-E3-08 is suitable.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts are rated for -55°C to 125°C junction temperature operation, with maximum junction temperature of 125°C. This matches the thermal operating envelope of the original BAS40-05-7-F-79.