BAV70 Equivalent & Substitute Parts

Part Overview

The BAV70 is a general-purpose diode array manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode device in a surface mount SOT-23-3 package. This component is rated for 70 V DC reverse voltage and 200 mA average rectified current per diode, with a maximum forward voltage of 1.25 V at 150 mA. The part is currently in Active product status with substantial inventory availability. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements where alternative electrical or mechanical characteristics may be beneficial.

Substiute Parts

BAV70

Taiwan Semiconductor CorporationIn Stock: 1595159BAV70 Datasheet

Current PartRFQ

BAV70

Diodes IncorporatedIn Stock: 1595128BAV70 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAV70 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Diode configuration must remain 1 Pair Common Cathode
• DC reverse voltage rating must equal or exceed 70 V
• Average rectified current per diode must equal or exceed 200 mA
• Forward voltage characteristics must be compatible with circuit design
• Operating temperature range must encompass -55°C to 150°C
• Reverse recovery time and leakage current must be acceptable for the application

Mechanical Compatibility Criteria:

• Surface mount mounting type required
• Package footprint must be compatible with PCB layout (SOT-23-3 or equivalent pinout)

The BAV70 from Diodes Incorporated meets these criteria with enhanced electrical performance characteristics, including higher voltage rating (75 V), increased current capacity (300 mA), faster recovery time (4 ns), and automotive-grade qualification (AEC-Q101). However, this substitute is classified as Last Time Buy, indicating discontinued production status.

Parameter Comparison

Engineering Selection Recommendations

For New Designs: The BAV70 from Taiwan Semiconductor Corporation is the recommended selection. This part maintains Active product status, ensuring long-term availability and supply chain stability. Full RoHS3 compliance and REACH unaffected status are documented, supporting regulatory requirements for commercial and industrial applications.

For Existing Designs Requiring Substitution: The BAV70 from Diodes Incorporated provides electrical performance that exceeds the original specification in voltage rating and current capacity. However, this part carries Last Time Buy status, indicating production discontinuation. The package footprint differs (SOT-323 versus SOT-23-3), requiring PCB layout modification. The higher reverse leakage current (50 µA at 75 V versus 2.5 µA at 70 V) must be evaluated for low-power or precision applications. Automotive-grade qualification (AEC-Q101) is available if required for automotive applications.

Compliance Considerations: The original BAV70 from Taiwan Semiconductor Corporation maintains documented ROHS3 compliance and REACH unaffected status. Regulatory compliance documentation for the Diodes Incorporated substitute is not provided in the available parameters.

Frequently Asked Questions (FAQ)

Q: Can the BAV70 from Diodes Incorporated be used as a direct replacement for the BAV70 from Taiwan Semiconductor Corporation?

A: Electrical substitution is possible due to identical diode configuration, forward voltage characteristics, and operating temperature range. The Diodes Incorporated part exceeds voltage and current ratings. However, the package footprint differs (SOT-323 versus SOT-23-3), requiring PCB redesign. Last Time Buy status limits future availability.

Q: What is the impact of the different package types (SOT-23-3 versus SOT-323)?

A: SOT-23-3 and SOT-323 are distinct surface mount packages with different footprints, pin spacing, and land patterns. Direct PCB substitution without layout modification is not possible. Component placement, trace routing, and solder pad dimensions must be recalculated for the alternative package.

Q: Is the higher reverse leakage current of the Diodes Incorporated substitute acceptable?

A: The Diodes Incorporated BAV70 exhibits 50 µA reverse leakage at 75 V compared to 2.5 µA at 70 V for the original part. This 20-fold increase must be evaluated against circuit requirements. Applications with strict leakage specifications, precision analog circuits, or low-power designs may be affected. High-current rectification applications typically tolerate this difference.

Q: Why does the Diodes Incorporated part have Last Time Buy status?

A: Last Time Buy status indicates the manufacturer has discontinued production. Existing inventory may be available for a limited period. New designs should not incorporate parts with Last Time Buy status unless supply agreements guarantee availability through the product lifecycle.

Q: What compliance certifications apply to each part?

A: The Taiwan Semiconductor Corporation BAV70 is ROHS3 compliant and REACH unaffected. The Diodes Incorporated BAV70 includes AEC-Q101 automotive qualification. Compliance documentation for the Diodes Incorporated part regarding RoHS and REACH is not provided in the available parameters.

Q: Are there any speed or recovery time differences between these parts?

A: The Diodes Incorporated BAV70 has a reverse recovery time of 4 ns compared to 6 ns for the original part. This faster recovery may improve switching performance in high-frequency applications. The Diodes Incorporated part is classified as Fast Recovery (≤500 ns, >200 mA) versus Standard technology for the original part.