BAS70-04WF Equivalent & Substitute Parts

Part Overview

The BAS70-04WF is a Schottky diode array in a 1 Pair Series Connection configuration, manufactured by Nexperia USA Inc. This surface mount component operates at 70 V DC reverse voltage with 70 mA average rectified current per diode. The part is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

BAS70-04WF

Nexperia USA Inc.In Stock: 10058BAS70-04WF Datasheet

Current PartRFQ

BAS70-04W,115

Nexperia USA Inc.In Stock: 98493BAS70-04W,115 Datasheet

Parametric EquivalentRFQ

BAS70-04WFILM

STMicroelectronicsIn Stock: 3449BAS70-04WFILM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAS70-04WF is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Diode Configuration: 1 Pair Series Connection
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 70 V
• Current - Average Rectified (Io) (per Diode): 70 mA (DC)
• Operating Temperature - Junction (Max): 150°C
• Current - Reverse Leakage @ Vr: 10 µA @ 70 V

Mechanical Equivalence Requirements:

• Package / Case: SC-70, SOT-323
• Mounting Type: Surface Mount
• Supplier Device Package: SOT-323

Compliance Requirements:

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

All identified substitute parts meet these criteria. Forward voltage characteristics may vary within acceptable operating ranges while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

BAS70-04W,115 (Nexperia USA Inc.): This substitute part is qualified to AEC-Q101 automotive standards and carries Automotive grade designation. It maintains identical electrical and mechanical specifications to the BAS70-04WF. The forward voltage characteristic differs at the measurement point (410 mV @ 1 mA versus 1 V @ 15 mA), but both parts operate within the same functional envelope for Schottky diode applications. This part is suitable for applications requiring automotive-grade reliability.

BAS70-04WFILM (STMicroelectronics): This substitute part is manufactured by STMicroelectronics and provides equivalent electrical performance and mechanical compatibility. The forward voltage characteristic matches the BAS70-04WF specification (1 V @ 15 mA). This part is suitable for applications where multi-source component strategy is required or when STMicroelectronics supply chain access is preferred.

All three parts are Active product status, RoHS3 compliant, and carry MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can BAS70-04W,115 be used as a direct replacement for BAS70-04WF?

A: Yes. Both parts share identical electrical specifications for diode configuration, reverse voltage rating, average rectified current, reverse leakage current, and junction temperature rating. Both are packaged in SC-70, SOT-323 surface mount configuration. The BAS70-04W,115 carries additional AEC-Q101 automotive qualification, making it suitable for automotive and industrial applications.

Q: What is the difference between the forward voltage specifications listed for these parts?

A: Forward voltage is measured at different current levels. BAS70-04WF and BAS70-04WFILM specify 1 V @ 15 mA, while BAS70-04W,115 specifies 410 mV @ 1 mA. These measurements reflect the same diode characteristic curve at different operating points. All three parts operate within acceptable Schottky diode forward voltage ranges for their respective applications.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All three parts use the SC-70, SOT-323 package with surface mount configuration. PCB footprints, solder pad layouts, and assembly processes are identical across all substitute parts.

Q: Does the automotive qualification of BAS70-04W,115 affect its use in non-automotive applications?

A: No. AEC-Q101 qualification indicates additional testing and reliability standards. Parts qualified to automotive standards are suitable for use in any application, including consumer and industrial electronics.

Q: Are all parts RoHS3 compliant?

A: Yes. BAS70-04WF, BAS70-04W,115, and BAS70-04WFILM are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: All three parts are classified as Small Signal diodes with speed rating ≤ 200mA (Io), Any Speed. They are suitable for high-frequency switching applications within their current and voltage ratings.

Q: What is the base product number for these diodes?

A: The base product number is BAS70. All three substitute parts are variants of this base product line, differing in packaging designation and manufacturer source.