BAV70WT1 Equivalent & Substitute Parts

Part Overview

The BAV70WT1 is a dual diode array in a surface mount SC-70, SOT-323 package manufactured by onsemi. This component functions as a switching diode with common cathode configuration, rated for 70V DC reverse voltage and 200mA average rectified current per diode. The BAV70WT1 is classified as obsolete product status, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within defined parameter tolerances.

Substiute Parts

BAV70WT1

onsemiIn Stock: 4228BAV70WT1 Datasheet

Current PartRFQ

BAV70WT1G

onsemiIn Stock: 305311BAV70WT1G Datasheet

DirectRFQ

BAS70-05WFILM

STMicroelectronicsIn Stock: 32143BAS70-05WFILM Datasheet

SimilarRFQ

CMSD2838 TR PBFREE

Central Semiconductor CorpIn Stock: 5232CMSD2838 TR PBFREE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BAV70WT1 are selected based on compatibility across the following critical parameters: diode configuration (1 Pair Common Cathode), package type (SC-70, SOT-323 surface mount), mounting compatibility, and electrical performance within acceptable ranges. The substitution logic prioritizes parts that maintain the same physical footprint and pin configuration while meeting or exceeding the voltage and current ratings of the original component.

Key Parameters for Substitution:

• Diode Configuration: 1 Pair Common Cathode
• Package / Case: SC-70, SOT-323
• Mounting Type: Surface Mount
• Voltage - DC Reverse (Vr) (Max): ≥ 70 V
• Current - Average Rectified (Io): ≥ 200mA (DC)
• Product Status: Active (preferred for ongoing availability)

Parameter Comparison

Engineering Selection Recommendations

BAV70WT1G (onsemi) is the direct equivalent substitute. This part maintains identical electrical specifications (100V reverse voltage exceeds the 70V requirement, 200mA current rating matches the original) and shares the same manufacturer lineage. BAV70WT1G carries Active product status and ROHS3 compliance, addressing the obsolescence and regulatory limitations of the original BAV70WT1. This part is the primary selection for direct replacement in new designs and production transitions.

CMSD2838 TR PBFREE (Central Semiconductor Corp) is a functional substitute with compatible electrical performance. The 75V reverse voltage rating and 200mA current capacity satisfy the BAV70WT1 requirements. This part offers Active product status and ROHS3 compliance. The standard diode technology and SOT-323 package ensure mechanical and electrical compatibility. This option is suitable when BAV70WT1G availability is constrained.

BAS70-05WFILM (STMicroelectronics) is a limited substitute applicable only to circuits where the reduced current rating (70mA) is acceptable. The Schottky technology provides lower forward voltage characteristics but the 70mA current limit restricts its use to applications with lower current demands than the original 200mA specification. This part is not recommended as a general replacement for the BAV70WT1 due to current rating constraints.

Frequently Asked Questions (FAQ)

Q: Can BAV70WT1G be used as a direct replacement for BAV70WT1?

A: Yes. BAV70WT1G is the direct equivalent from onsemi. It maintains the same diode configuration (1 Pair Common Cathode), package (SC-70, SOT-323), and electrical ratings (100V reverse voltage exceeds 70V requirement, 200mA current matches specification). The primary advantage is Active product status and ROHS3 compliance compared to the obsolete, non-compliant BAV70WT1.

Q: What is the difference between standard and Schottky diode technology in these substitutes?

A: The BAV70WT1, BAV70WT1G, and CMSD2838 TR PBFREE use standard diode technology. The BAS70-05WFILM uses Schottky technology, which exhibits lower forward voltage drop but is limited to 70mA current capacity. For the BAV70WT1 application requiring 200mA, standard technology substitutes are appropriate.

Q: Is BAS70-05WFILM suitable for all BAV70WT1 applications?

A: No. The BAS70-05WFILM current rating of 70mA is insufficient for applications requiring the full 200mA capacity of the BAV70WT1. This substitute is only applicable to circuits with current demands not exceeding 70mA per diode.

Q: Are all substitute parts RoHS compliant?

A: BAV70WT1G, BAS70-05WFILM, and CMSD2838 TR PBFREE are all ROHS3 compliant. The original BAV70WT1 is RoHS non-compliant. For applications requiring RoHS compliance, any of the three active substitutes are acceptable within their electrical parameter constraints.

Q: Do all substitute parts have the same package footprint?

A: Yes. All substitute parts use the SC-70, SOT-323 surface mount package. This ensures mechanical compatibility and identical PCB footprint for direct board-level substitution without layout modifications.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All parts, including the original BAV70WT1 and all substitutes, have MSL 1 (Unlimited). This indicates no moisture sensitivity restrictions for storage, handling, or reflow processes.