BAS40W-04-7-F-79 Equivalent & Substitute Parts

Part Overview

The BAS40W-04-7-F-79 is a Schottky diode array in a 1 Pair Series Connection 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 SC-70, SOT-323 surface mount form factor and is classified as obsolete product status.

Due to the obsolete status of the BAS40W-04-7-F-79, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts must maintain electrical and mechanical compatibility while meeting the same functional requirements.

Substiute Parts

BAS40W-04-7-F-79

Diodes IncorporatedIn Stock: 1141BAS40W-04-7-F-79 Datasheet

Current PartRFQ

BAS40W-04-7-F

Diodes IncorporatedIn Stock: 8224BAS40W-04-7-F Datasheet

Parametric EquivalentRFQ

CMSSH-3SE TR PBFREE

Central Semiconductor CorpIn Stock: 7959CMSSH-3SE TR PBFREE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAS40W-04-7-F-79 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Diode Configuration: 1 Pair Series Connection
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io) (per Diode): 200 mA (DC)
• Package / Case: SC-70, SOT-323
• Mounting Type: Surface Mount

Acceptable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Variations permitted within functional operating range
• Current - Reverse Leakage @ Vr: Variations permitted within acceptable leakage specifications
• Operating Temperature - Junction: Extended ranges acceptable for broader application compatibility
• Reverse Recovery Time (trr): Consistent specification across all qualified substitutes

All substitute parts identified maintain full electrical and mechanical compatibility with the original BAS40W-04-7-F-79 specification while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

BAS40W-04-7-F (Diodes Incorporated)

This substitute part is a parametric equivalent to the BAS40W-04-7-F-79 with identical electrical specifications and package configuration. The primary distinction is active product status, ensuring long-term availability and supply chain continuity. This part is offered in Cut Tape (CT) and Digi-Reel® packaging options. Selection of BAS40W-04-7-F is appropriate for direct replacement applications where the original part number is no longer available.

CMSSH-3SE TR PBFREE (Central Semiconductor Corp)

This substitute part maintains full electrical equivalence across all critical parameters: 40 V reverse voltage rating, 200 mA average rectified current, 5 ns reverse recovery time, and SC-70, SOT-323 package configuration. The CMSSH-3SE TR PBFREE offers an extended operating temperature range (-65°C ~ 150°C) compared to the original specification (-55°C ~ 125°C), providing broader thermal application compatibility. This part is supplied in Tape & Reel (TR) packaging. Selection of CMSSH-3SE TR PBFREE is appropriate for applications requiring extended temperature performance or when Central Semiconductor Corp supply chain is preferred.

Both substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, ensuring regulatory compliance across industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can BAS40W-04-7-F be used as a direct replacement for BAS40W-04-7-F-79?

A: Yes. BAS40W-04-7-F is a parametric equivalent with identical electrical specifications (40 V reverse voltage, 200 mA average rectified current, 5 ns reverse recovery time) and identical package configuration (SC-70, SOT-323). The primary difference is product status: BAS40W-04-7-F is active, while BAS40W-04-7-F-79 is obsolete. Direct pin-for-pin and functional replacement is supported.

Q: What are the differences between BAS40W-04-7-F and CMSSH-3SE TR PBFREE?

A: Both parts are electrically equivalent across all critical parameters: 40 V reverse voltage, 200 mA average rectified current, 5 ns reverse recovery time, and SC-70, SOT-323 package. The CMSSH-3SE TR PBFREE offers an extended operating temperature range (-65°C ~ 150°C versus -55°C ~ 125°C) and is manufactured by Central Semiconductor Corp rather than Diodes Incorporated. Reverse leakage current specifications differ slightly (500 nA @ 25 V versus 200 nA @ 30 V), remaining within acceptable operational limits.

Q: Are packaging differences between these parts significant?

A: Packaging format differences exist but do not affect electrical compatibility. BAS40W-04-7-F is available in Cut Tape (CT) and Digi-Reel® formats, while CMSSH-3SE TR PBFREE is supplied in Tape & Reel (TR) format. All three parts use identical SC-70, SOT-323 surface mount package configuration. Selection between packaging options depends on production volume and assembly process requirements.

Q: Do all substitute parts meet the same regulatory compliance standards?

A: Yes. BAS40W-04-7-F and CMSSH-3SE TR PBFREE both maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, matching the original BAS40W-04-7-F-79 specifications. Both parts are suitable for applications requiring regulatory compliance in industrial and commercial environments.

Q: Which substitute part should be selected for extended temperature applications?

A: CMSSH-3SE TR PBFREE supports an extended operating temperature range of -65°C ~ 150°C, compared to -55°C ~ 125°C for both BAS40W-04-7-F and the original BAS40W-04-7-F-79. Selection of CMSSH-3SE TR PBFREE is appropriate for applications requiring operation at temperatures below -55°C or above 125°C.

Q: Are there any functional differences in reverse recovery time between the substitute parts?

A: No. All three parts (BAS40W-04-7-F-79, BAS40W-04-7-F, and CMSSH-3SE TR PBFREE) specify identical reverse recovery time of 5 ns, ensuring equivalent switching performance in high-frequency applications.