BAV70T Equivalent & Substitute Parts

Part Overview

The BAV70T is a general-purpose diode array manufactured by onsemi, configured as a 1 Pair Common Cathode device in a SOT-523 surface mount package. This component is rated for 85 V DC reverse voltage and 75 mA average rectified current per diode. The BAV70T is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

BAV70T

onsemiIn Stock: 368216BAV70T Datasheet

Current PartRFQ

BAV70TT1G

onsemiIn Stock: 131140BAV70TT1G Datasheet

DirectRFQ

BAV70M,315

Nexperia USA Inc.In Stock: 111658BAV70M,315 Datasheet

SimilarRFQ

BAV70TB_R1_00001

Panjit International Inc.In Stock: 4809BAV70TB_R1_00001 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAV70T is determined by the following critical parameters: diode configuration (1 Pair Common Cathode), voltage rating capability, current handling capacity, and surface mount technology. Substitute parts must maintain the same functional configuration and support the electrical operating conditions of the original design.

The identified substitute parts are grouped based on the following substitution criteria:

Direct Substitution Criteria:

• Diode Configuration: 1 Pair Common Cathode (mandatory)
• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 85 V
• Current - Average Rectified (Io) (per Diode): Equal to or greater than 75 mA
• Mounting Type: Surface Mount
• Technology: Standard
• Speed Classification: Small Signal ≤ 200mA (Io), Any Speed

Package Compatibility: Substitute parts may utilize different surface mount packages (SOT-523, SC-75/SOT-416, SC-101/SOT-883) provided the footprint and pinout are compatible with the application circuit design.

Parameter Comparison

Engineering Selection Recommendations

BAV70TT1G (onsemi): This part is an active product from the original manufacturer onsemi. It exceeds the BAV70T specifications in voltage rating (100 V vs. 85 V) and current capacity (200 mA vs. 75 mA). The BAV70TT1G is ROHS3 compliant and features an extended operating temperature range (-55°C to 150°C). Package change from SOT-523 to SC-75/SOT-416 requires PCB layout verification. Reverse recovery time increases from 4 ns to 6 ns.

BAV70M,315 (Nexperia USA Inc.): This part is an active product offering 100 V voltage rating and 150 mA current capacity, both exceeding BAV70T requirements. The BAV70M,315 maintains the 4 ns reverse recovery time and provides superior reverse leakage characteristics (500 nA @ 80 V). ROHS3 compliance is confirmed. Package change to SC-101/SOT-883 requires PCB footprint redesign. Maximum junction temperature rating is 150°C.

BAV70TB_R1_00001 (Panjit International Inc.): This part is an active product in the same SOT-523 package as the BAV70T, eliminating package-related redesign requirements. Current capacity is doubled (150 mA vs. 75 mA). Voltage rating is lower (75 V vs. 85 V), making this part suitable only for applications with maximum reverse voltage requirements below 75 V. ROHS3 compliance and extended temperature range (-55°C to 150°C) are provided. Reverse recovery time and leakage characteristics are comparable to the BAV70T.

Frequently Asked Questions (FAQ)

Q: Can BAV70TT1G directly replace BAV70T without PCB modifications?

A: No. While BAV70TT1G maintains the same diode configuration and exceeds electrical specifications, the package changes from SOT-523 to SC-75/SOT-416. PCB footprint and layout modifications are required.

Q: Is BAV70TB_R1_00001 suitable for all BAV70T applications?

A: BAV70TB_R1_00001 is suitable only for applications where the maximum reverse voltage requirement does not exceed 75 V. The BAV70T is rated for 85 V; therefore, applications requiring the full 85 V rating cannot use BAV70TB_R1_00001 as a substitute.

Q: What are the compliance differences between substitute parts?

A: BAV70TT1G, BAV70M,315, and BAV70TB_R1_00001 are all ROHS3 compliant. The original BAV70T does not specify RoHS status. All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Q: How do operating temperature ranges affect substitution?

A: BAV70T specifies a maximum junction temperature of 125°C. BAV70TT1G and BAV70TB_R1_00001 provide extended ranges (-55°C to 150°C), offering broader thermal operating capability. BAV70M,315 specifies 150°C maximum. Applications operating near the 125°C limit benefit from the extended range of substitute parts.

Q: What is the impact of reverse recovery time differences?

A: BAV70T, BAV70M,315, and BAV70TB_R1_00001 specify 4 ns reverse recovery time. BAV70TT1G specifies 6 ns. In high-frequency switching applications, the 2 ns difference may affect circuit performance. Applications operating at lower frequencies are unaffected.

Q: Are all substitute parts available in the same quantities as BAV70T?

A: Inventory levels differ. BAV70T has 368,200 pieces in stock. BAV70TT1G has 131,100 pieces, BAV70M,315 has 111,577 pieces, and BAV70TB_R1_00001 has 4,740 pieces available.

Q: What package considerations apply to each substitute?

A: BAV70TB_R1_00001 uses SOT-523 (same as BAV70T). BAV70TT1G uses SC-75/SOT-416. BAV70M,315 uses SC-101/SOT-883. Package selection depends on PCB design constraints and available footprint space.