BAS40-05,235 Equivalent & Substitute Parts

Part Overview

The BAS40-05,235 is a Schottky diode array manufactured by Nexperia USA Inc., configured as a 1 Pair Common Cathode design in a Surface Mount TO-236-3 (SC-59, SOT-23-3) package. This component is rated for 40 V DC reverse voltage with 120 mA average rectified current per diode and operates at a maximum junction temperature of 150°C. The part is ROHS3 compliant with unlimited moisture sensitivity (MSL 1) and maintains Active product status.

Equivalent and substitute parts are identified to address component availability, supply chain requirements, packaging format preferences, or performance envelope variations while maintaining functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io) (per Diode)	120	mA (DC)
Voltage - Forward (Vf) (Max) @ If	1	V @ 40 mA
Current - Reverse Leakage @ Vr	10	µA @ 40 V
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BAS40-05,235 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 40 V DC reverse voltage, 120 mA average rectified current per diode, 1 V forward voltage at 40 mA, 10 µA reverse leakage at 40 V, and 150°C maximum junction temperature. These parts differ only in packaging format (Tape & Reel versus Cut Tape & Digi-Reel) or supplier device package designation while maintaining the same TO-236-3 / SC-59 / SOT-23-3 footprint.

Similar Parts share the same diode configuration (1 Pair Common Cathode), Schottky technology, 40 V reverse voltage rating, and identical package footprint, but feature higher current ratings (200 mA to 400 mA), improved reverse recovery characteristics, or different reverse leakage specifications. These parts are electrically compatible for applications where the original 120 mA current rating is not a limiting constraint and where the enhanced performance envelope is acceptable.

Key Parameters for Substitution:

Diode Configuration: 1 Pair Common Cathode (mandatory)
Technology: Schottky (mandatory)
Voltage - DC Reverse (Vr) (Max): 40 V (mandatory)
Package / Case: TO-236-3, SC-59, SOT-23-3 (mandatory)
Mounting Type: Surface Mount (mandatory)
Current - Average Rectified (Io): 120 mA minimum (for parametric equivalents); 120 mA or higher (for similar parts)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) @ If [V]	Reverse Leakage @ Vr [µA or nA]	Tj (Max) [°C]	Packaging	Equivalence Type
BAS40-05,235	Nexperia USA Inc.	40	120	1 @ 40 mA	10 @ 40 V	150	Tape & Reel (TR)	Main Part
BAS40-05,215	Nexperia USA Inc.	40	120	1 @ 40 mA	10 @ 40 V	150	Cut Tape (CT) & Digi-Reel®	Parametric Equivalent
BAS40-05-7-F	Diodes Incorporated	40	200	1 @ 40 mA	0.2 nA @ 30 V	125	Tape & Reel (TR)	Similar Part
BAS40-05-TP	Micro Commercial Co	40	200	1 @ 40 mA	0.2 nA @ 30 V	125	Tape & Reel (TR)	Similar Part
BAS4005E6327HTSA1	Infineon Technologies	40	120	1 @ 40 mA	1 µA @ 30 V	150	Tape & Reel (TR)	Similar Part
BAS4005E6433HTMA1	Infineon Technologies	40	120	1 @ 40 mA	1 µA @ 30 V	150	Cut Tape (CT) & Digi-Reel®	Similar Part
BAT54CFILM	STMicroelectronics	40	300	0.9 @ 100 mA	1 µA @ 30 V	150	Cut Tape (CT) & Digi-Reel®	Similar Part
BAT6405E6327HTSA1	Infineon Technologies	40	250	0.75 @ 100 mA	2 µA @ 30 V	150	Tape & Reel (TR)	Similar Part
RB495DS-TP	Micro Commercial Co	25	400	0.5 @ 200 mA	70 µA @ 25 V	125	Tape & Reel (TR)	Similar Part
SDM20E40C-7-F	Diodes Incorporated	40	400	0.5 @ 200 mA	70 µA @ 25 V	125	Tape & Reel (TR)	Similar Part
BAS40-05HMFHT116	Rohm Semiconductor	40	120	1 @ 40 mA	10 µA @ 40 V	150	Cut Tape (CT) & Digi-Reel®	Parametric Equivalent

Engineering Selection Recommendations

Parametric Equivalents (BAS40-05,215 and BAS40-05HMFHT116) are direct functional replacements for the BAS40-05,235. These parts maintain identical electrical performance across all specified parameters and are suitable for direct substitution. Selection between these options is determined by packaging format requirements: BAS40-05,215 is supplied in Cut Tape & Digi-Reel format, while BAS40-05HMFHT116 is supplied in Cut Tape & Digi-Reel format with Rohm Semiconductor as manufacturer and includes AEC-Q101 automotive qualification. Both maintain ROHS3 compliance and MSL 1 rating.

Similar Parts with Higher Current Ratings (BAS40-05-7-F, BAS40-05-TP, BAS40-05E6327HTSA1, BAS4005E6433HTMA1, BAT54CFILM, BAT6405E6327HTSA1, SDM20E40C-7-F) are electrically compatible for applications where the circuit design permits operation within the enhanced current envelope. These parts maintain the 40 V reverse voltage specification and identical package footprint. Selection is appropriate when:

The application circuit does not require the specific 120 mA current limitation
Higher current capacity provides design margin or future scalability
Improved reverse recovery characteristics or leakage specifications align with circuit requirements

Parts with Reduced Voltage Rating (RB495DS-TP) feature a 25 V maximum reverse voltage specification, which is below the 40 V rating of the main part. This part is not suitable for direct substitution in circuits requiring the full 40 V reverse voltage capability.

All substitute parts listed maintain ROHS3 compliance, MSL 1 moisture sensitivity rating, and Surface Mount TO-236-3 / SC-59 / SOT-23-3 package compatibility. Product status is Active for all listed alternatives.

Frequently Asked Questions (FAQ)

Q: Can BAS40-05,215 be used as a direct replacement for BAS40-05,235?

A: Yes. BAS40-05,215 is a parametric equivalent with identical electrical specifications: 40 V reverse voltage, 120 mA average rectified current per diode, 1 V forward voltage at 40 mA, and 150°C maximum junction temperature. The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel). Both parts are manufactured by Nexperia USA Inc. and maintain the same TO-236-3 / SC-59 / SOT-23-3 footprint.

Q: What is the difference between parametric equivalents and similar parts?

A: Parametric equivalents maintain identical electrical specifications across all critical parameters. Similar parts share the same diode configuration, Schottky technology, 40 V reverse voltage rating, and package footprint but feature different current ratings, reverse leakage characteristics, or reverse recovery times. Similar parts are electrically compatible when the application circuit does not require the specific 120 mA current limitation of the original part.

Q: Can I use BAS40-05-7-F (200 mA) instead of BAS40-05,235 (120 mA)?

A: Yes, provided the circuit design permits operation within the higher current envelope. BAS40-05-7-F maintains the 40 V reverse voltage specification and identical package footprint. The higher 200 mA current rating provides additional design margin. However, verify that the circuit does not depend on the specific 120 mA current limitation or thermal characteristics of the original part.

Q: Is RB495DS-TP a suitable substitute?

A: No. RB495DS-TP features a 25 V maximum reverse voltage specification, which is below the 40 V rating required for the BAS40-05,235. This part is not suitable for direct substitution in circuits requiring the full 40 V reverse voltage capability.

Q: What packaging formats are available for equivalent parts?

A: The BAS40-05,235 is supplied in Tape & Reel (TR) format. Parametric equivalents are available in Cut Tape (CT) & Digi-Reel format (BAS40-05,215 and BAS40-05HMFHT116). Selection depends on assembly line requirements and component handling procedures. Both formats maintain identical electrical performance and package footprint compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, consistent with the main part specification.

Q: What is the significance of AEC-Q101 qualification on BAS40-05HMFHT116?

A: AEC-Q101 qualification indicates that BAS40-05HMFHT116 meets automotive-grade reliability standards. This qualification is relevant for applications requiring automotive-grade components. The main part BAS40-05,235 does not carry this designation. Selection of the qualified part is appropriate for automotive applications where such certification is required.

Q: Can I mix different manufacturers' parts in the same circuit board?

A: Yes. All substitute parts maintain identical or compatible electrical specifications, the same package footprint (TO-236-3 / SC-59 / SOT-23-3), and equivalent compliance certifications (ROHS3, MSL 1). Mixing manufacturers is acceptable from an electrical and mechanical compatibility standpoint. Verify that procurement and quality assurance procedures accommodate multiple suppliers if required.

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