BAS40W-05-7 Equivalent & Substitute Parts

Part Overview

The BAS40W-05-7 is a Schottky diode array manufactured by Diodes Incorporated, configured as 1 pair common cathode with a maximum reverse voltage of 40 V and average rectified current of 200 mA per diode. The device is housed in a surface mount SC-70, SOT-323 package and is classified as discontinued at DiGi Electronics. Due to its discontinued status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support and procurement continuity.

Substiute Parts

BAS40W-05-7

Diodes IncorporatedIn Stock: 45152BAS40W-05-7 Datasheet

Current PartRFQ

BAS40W-05-7-F

Diodes IncorporatedIn Stock: 17410BAS40W-05-7-F Datasheet

DirectRFQ

BAS40-05W,115

NXP SemiconductorsIn Stock: 295248BAS40-05W,115 Datasheet

MFR RecommendedRFQ

BAS4005WH6327XTSA1

Infineon TechnologiesIn Stock: 71833BAS4005WH6327XTSA1 Datasheet

MFR RecommendedRFQ

BAT6405WH6327XTSA1

Infineon TechnologiesIn Stock: 4381BAT6405WH6327XTSA1 Datasheet

MFR RecommendedRFQ

BAT854CW,115

Nexperia USA Inc.In Stock: 429134BAT854CW,115 Datasheet

MFR RecommendedRFQ

BAT854CW,135

Nexperia USA Inc.In Stock: 37897BAT854CW,135 Datasheet

MFR RecommendedRFQ

RB450FT106

Rohm SemiconductorIn Stock: 2294RB450FT106 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAS40W-05-7 is determined by the following critical parameters:

1. Diode Configuration: All substitutes must maintain 1 pair common cathode configuration to ensure circuit compatibility.
2. Technology: Schottky technology is required for forward voltage and switching characteristics.
3. Voltage Rating: Maximum reverse voltage of 40 V is the baseline requirement.
4. Current Rating: Current capacity must be sufficient for the application; substitutes range from 100 mA to 250 mA.
5. Package Type: SC-70, SOT-323 surface mount package is mandatory for PCB compatibility.
6. Operating Temperature Range: Junction temperature rating must support the application environment.

Substitutes are grouped into two categories:

Category A - Direct Electrical Equivalents (200 mA Rating): Parts with identical 200 mA current rating and matching forward voltage characteristics at specified test conditions.

Category B - Higher Current Capacity Alternatives (120 mA to 250 mA): Parts with reduced or increased current ratings that maintain 40 V reverse voltage and SOT-323 packaging but differ in current handling or forward voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BAS40W-05-7-F

The BAS40W-05-7-F from Diodes Incorporated is the direct functional equivalent of the BAS40W-05-7. It maintains identical electrical specifications including 40 V reverse voltage, 200 mA average rectified current, and 5 ns reverse recovery time. The primary distinction is product status: BAS40W-05-7-F is active and available in Cut Tape and Digi-Reel packaging formats. This part is ROHS3 compliant and represents the most direct replacement path.

Secondary Recommendations for Active Sourcing:

BAT854CW,115 and BAT854CW,135 (Nexperia USA Inc.) provide electrical equivalence with 200 mA current rating and 40 V reverse voltage. Both variants are active, ROHS3 compliant, and AEC-Q100 qualified for automotive applications. Forward voltage is specified at 550 mV @ 100 mA, which differs from the original part's 1 V @ 40 mA specification but remains within acceptable Schottky diode performance ranges. Maximum junction temperature is 150°C, exceeding the original part's 125°C rating.

BAT6405WH6327XTSA1 (Infineon Technologies) offers increased current capacity at 250 mA with matching 40 V reverse voltage. This part is ROHS3 compliant, AEC-Q101 automotive qualified, and features 5 ns reverse recovery time. Forward voltage is specified at 750 mV @ 100 mA. This option is suitable for applications requiring higher current headroom.

BAS40-05W,115 (NXP Semiconductors) and BAS4005WH6327XTSA1 (Infineon Technologies) both provide 120 mA current rating with 40 V reverse voltage. These parts are active and suitable for applications with reduced current requirements. BAS4005WH6327XTSA1 is ROHS3 compliant and AEC-Q101 qualified.

RB450FT106 (Rohm Semiconductor) is a single diode device with 100 mA rating and 40 V reverse voltage. This part is not a direct array equivalent and is suitable only for applications where a single diode configuration is acceptable.

Frequently Asked Questions (FAQ)

Q: Can BAS40W-05-7 be directly replaced with BAS40W-05-7-F?

A: Yes. BAS40W-05-7-F is the active equivalent with identical electrical specifications. The primary difference is product status and packaging format availability. Both maintain 40 V reverse voltage, 200 mA current rating, and SOT-323 package configuration.

Q: What is the difference between BAT854CW,115 and BAT854CW,135?

A: Both parts are electrically identical with 40 V reverse voltage and 200 mA current rating in SOT-323 packaging. The designation suffix indicates different packaging reel specifications. Selection between these variants depends on procurement and handling requirements rather than electrical performance.

Q: Can BAT6405WH6327XTSA1 be used as a substitute if the application only requires 200 mA?

A: Yes. BAT6405WH6327XTSA1 has a 250 mA current rating, which exceeds the 200 mA requirement of the original part. Higher current capacity does not create incompatibility in applications requiring lower current. The 40 V reverse voltage and SOT-323 package remain compatible. Forward voltage specification differs at 750 mV @ 100 mA versus the original 1 V @ 40 mA, but both are within acceptable Schottky diode operating ranges.

Q: Is RoHS compliance required for this substitution?

A: The original BAS40W-05-7 is RoHS non-compliant. All active substitute parts listed are ROHS3 compliant. If RoHS compliance is a design requirement, any of the active substitutes satisfy this criterion. If legacy non-compliant status is required, only the discontinued BAS40W-05-7 meets this specification.

Q: What is the significance of AEC-Q100 and AEC-Q101 qualifications?

A: AEC-Q100 and AEC-Q101 are automotive qualification standards. BAT854CW variants carry AEC-Q100 qualification, while BAT6405WH6327XTSA1 and BAS4005WH6327XTSA1 carry AEC-Q101 qualification. These certifications indicate the parts have undergone automotive-grade reliability testing. Selection depends on whether automotive qualification is a design requirement.

Q: Can parts with different current ratings (120 mA, 100 mA) substitute for the 200 mA original?

A: Parts with lower current ratings (120 mA, 100 mA) can substitute only if the application circuit does not require the full 200 mA capacity. Substitution with lower-rated parts creates risk if actual circuit current demand exceeds the substitute part's rating. Conversely, higher-rated parts (250 mA) present no current-related incompatibility.

Q: Does the SOT-323 package remain consistent across all substitutes?

A: Yes. All substitute parts maintain SC-70, SOT-323 surface mount packaging. This ensures PCB footprint and reflow soldering process compatibility without layout modifications.

Q: What is the impact of different forward voltage specifications?

A: Forward voltage varies across substitutes due to manufacturing differences and test conditions. The original part specifies 1 V @ 40 mA, while alternatives range from 450 mV to 750 mV at different test currents. In most applications, Schottky diode forward voltage variation within this range does not create functional incompatibility. Circuit designs with tight voltage margin requirements should evaluate forward voltage impact on specific application performance.