BAS40-05-7 Equivalent & Substitute Parts

Part Overview

The BAS40-05-7 is a Schottky diode array featuring one pair of common cathode 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 SOT-23-3 (TO-236-3, SC-59) surface mount format and is designed for small signal applications with reverse recovery time of 5 nanoseconds.

The BAS40-05-7 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from multiple manufacturers including Diodes Incorporated, Nexperia USA Inc., Infineon Technologies, and STMicroelectronics. Selection of alternative components requires evaluation of electrical parameters, package compatibility, product status, and compliance certifications.

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)	200	mA (DC)
Voltage - Forward (Vf) (Max) @ If	1	V @ 40 mA
Reverse Recovery Time (trr)	5	ns
Current - Reverse Leakage @ Vr	200	nA @ 30 V
Operating Temperature - Junction	-55 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BAS40-05-7 is determined by the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 40 V
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3

Flexible Parameters (May Vary):

Current - Average Rectified (Io) (per Diode): Substitute parts may have equal or higher current ratings
Voltage - Forward (Vf) (Max) @ If: Substitute parts may have lower forward voltage
Reverse Recovery Time (trr): Substitute parts may have faster recovery characteristics
Current - Reverse Leakage @ Vr: Substitute parts may have lower leakage current
Operating Temperature - Junction: Substitute parts may have higher maximum junction temperature
RoHS Status: Substitute parts may be RoHS3 compliant (improvement over non-compliant original)

Substitute parts are grouped into two categories:

Category 1: Direct Parametric Equivalents (Diodes Incorporated) Parts BAS40-05-7-F and BAS40-05Q-7-F maintain identical electrical specifications to the original BAS40-05-7 while offering improved product status (Active vs. Discontinued) and RoHS3 compliance.

Category 2: Manufacturer Recommended Alternatives Parts from Nexperia USA Inc., Infineon Technologies, and STMicroelectronics provide equivalent or superior performance within the same package family. These alternatives may feature reduced current ratings (120 mA), increased current ratings (250–300 mA), or enhanced temperature performance while maintaining the 40 V reverse voltage specification and SOT-23-3 package compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [nA/µA]	Tj (Max) [°C]	Package	Product Status	RoHS Status
BAS40-05-7	Diodes Incorporated	40	200	1 @ 40 mA	5	200 nA @ 30 V	125	SOT-23-3	Discontinued	RoHS non-compliant
BAS40-05-7-F	Diodes Incorporated	40	200	1 @ 40 mA	5	200 nA @ 30 V	125	SOT-23-3	Active	ROHS3 Compliant
BAS40-05Q-7-F	Diodes Incorporated	40	200	1 @ 40 mA	5	200 nA @ 30 V	125	SOT-23-3	Active	ROHS3 Compliant
BAS40-05,215	Nexperia USA Inc.	40	120	1 @ 40 mA	—	10 µA @ 40 V	150	SOT-23-3	Active	ROHS3 Compliant
BAS40-05,235	Nexperia USA Inc.	40	120	1 @ 40 mA	—	10 µA @ 40 V	150	SOT-23-3	Active	ROHS3 Compliant
BAS4005E6327HTSA1	Infineon Technologies	40	120	1 @ 40 mA	0.1	1 µA @ 30 V	150	SOT-23-3	Active	ROHS3 Compliant
BAS4005E6433HTMA1	Infineon Technologies	40	120	1 @ 40 mA	0.1	1 µA @ 30 V	150	SOT-23-3	Active	ROHS3 Compliant
BAT54CFILM	STMicroelectronics	40	300	0.9 @ 100 mA	5	1 µA @ 30 V	150	SOT-23-3	Active	ROHS3 Compliant
BAT54CWFILM	STMicroelectronics	40	300	0.9 @ 100 mA	5	1 µA @ 30 V	150	SOT-23-3	Active	ROHS3 Compliant
BAT6405E6327HTSA1	Infineon Technologies	40	250	0.75 @ 100 mA	5	2 µA @ 30 V	150	SOT-23-3	Active	ROHS3 Compliant
BAT721C,215	Nexperia USA Inc.	40	200	0.55 @ 200 mA	—	15 µA @ 30 V	125	SOT-23-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Identical Specifications):

BAS40-05-7-F and BAS40-05Q-7-F are direct parametric equivalents to the BAS40-05-7. Both parts maintain 40 V reverse voltage, 200 mA average rectified current, 1 V forward voltage at 40 mA, and 5 ns reverse recovery time. Both are currently in Active product status with ROHS3 compliance. BAS40-05Q-7-F includes AEC-Q101 automotive qualification. These parts are suitable for direct substitution in existing designs without circuit modification.

Higher Current Capability (Uprating):

BAT54CFILM and BAT54CWFILM from STMicroelectronics provide 300 mA average rectified current per diode, exceeding the original 200 mA specification. Both maintain 40 V reverse voltage and 5 ns reverse recovery time. BAT54CWFILM uses SOT-323 package (smaller footprint) while BAT54CFILM uses SOT-23-3 package (pin-compatible with original). These parts are suitable for applications requiring higher current capacity within the same voltage class.

BAT6405E6327HTSA1 from Infineon Technologies provides 250 mA average rectified current with improved forward voltage characteristics (0.75 V @ 100 mA) and includes AEC-Q101 automotive qualification. This part bridges the current range between the original 200 mA specification and higher-capacity alternatives.

Lower Current Rating (Downrating):

BAS40-05,215, BAS40-05,235 (Nexperia USA Inc.), BAS4005E6327HTSA1, and BAS4005E6433HTMA1 (Infineon Technologies) are rated for 120 mA average rectified current, below the original 200 mA specification. These parts are suitable only for applications where the circuit current requirement does not exceed 120 mA. All four parts maintain 40 V reverse voltage and are in Active product status with ROHS3 compliance.

Automotive Grade Alternatives:

BAS40-05Q-7-F (Diodes Incorporated, AEC-Q101) and BAT6405E6327HTSA1 (Infineon Technologies, AEC-Q101) are qualified for automotive applications. BAT721C,215 (Nexperia USA Inc., AEC-Q100) provides automotive qualification with 200 mA current rating and improved forward voltage (0.55 V @ 200 mA).

Compliance Consideration:

All substitute parts listed are ROHS3 compliant, representing an improvement over the original BAS40-05-7 which is RoHS non-compliant. This compliance upgrade is beneficial for new designs and applications subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can BAS40-05-7-F be used as a direct replacement for BAS40-05-7?

A: Yes. BAS40-05-7-F is a parametric equivalent with identical electrical specifications: 40 V reverse voltage, 200 mA average rectified current, 1 V forward voltage at 40 mA, and 5 ns reverse recovery time. The primary differences are product status (Active vs. Discontinued) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modification is required.

Q: What is the difference between BAS40-05-7-F and BAS40-05Q-7-F?

A: Both parts are parametric equivalents with identical electrical specifications and packaging. BAS40-05Q-7-F includes AEC-Q101 automotive qualification, making it suitable for automotive applications. BAS40-05-7-F does not carry automotive qualification. Selection depends on application requirements.

Q: Can I use BAT54CFILM instead of BAS40-05-7?

A: BAT54CFILM is suitable if the application circuit current does not exceed 200 mA per diode. BAT54CFILM is rated for 300 mA, providing higher current capacity. Both parts maintain 40 V reverse voltage, 5 ns reverse recovery time, and SOT-23-3 package compatibility. Forward voltage differs slightly (0.9 V @ 100 mA vs. 1 V @ 40 mA), which may affect circuit performance in voltage-sensitive applications.

Q: Why do some substitute parts have lower current ratings (120 mA)?

A: Parts such as BAS40-05,215, BAS40-05,235, BAS4005E6327HTSA1, and BAS4005E6433HTMA1 are rated for 120 mA average rectified current. These parts are suitable only for applications where circuit current does not exceed 120 mA. Using a lower-rated part in a higher-current application will result in component failure or degraded performance.

Q: Are all substitute parts available in SOT-23-3 package?

A: All substitute parts listed are available in SOT-23-3 (TO-236-3, SC-59) package except BAT54CWFILM, which is available in SOT-323 (SC-70) package. BAT54CWFILM is not pin-compatible with the original BAS40-05-7 due to different package geometry. BAT54CFILM is the SOT-23-3 equivalent from STMicroelectronics.

Q: What is the significance of RoHS3 compliance on substitute parts?

A: All substitute parts listed are ROHS3 compliant, whereas the original BAS40-05-7 is RoHS non-compliant. RoHS3 compliance restricts the use of hazardous substances in electrical and electronic equipment. For new designs and applications subject to RoHS regulations, ROHS3-compliant substitutes are required.

Q: Can I use BAT721C,215 as a substitute for BAS40-05-7?

A: BAT721C,215 is suitable for direct substitution in terms of current rating (200 mA) and package (SOT-23-3). However, forward voltage differs significantly (0.55 V @ 200 mA vs. 1 V @ 40 mA). This lower forward voltage may affect circuit performance in applications sensitive to voltage drop. BAT721C,215 includes AEC-Q100 automotive qualification and is ROHS3 compliant.

Q: What is the difference between BAS4005E6327HTSA1 and BAS4005E6433HTMA1?

A: Both parts are from Infineon Technologies with identical electrical specifications: 40 V reverse voltage, 120 mA average rectified current, 1 V forward voltage at 40 mA, 0.1 ns reverse recovery time, and 1 µA reverse leakage at 30 V. The primary difference is packaging: BAS4005E6327HTSA1 is supplied in Tape & Reel (TR), while BAS4005E6433HTMA1 is supplied in Cut Tape (CT) & Digi-Reel®. Selection depends on procurement and assembly requirements.

Q: Is reverse recovery time an important parameter for substitution?

A: Reverse recovery time (trr) is relevant for applications requiring fast switching or high-frequency operation. The original BAS40-05-7 specifies 5 ns. Substitute parts from Infineon Technologies (BAS4005E6327HTSA1, BAS4005E6433HTMA1) specify 0.1 ns, providing faster recovery. Parts from Nexperia USA Inc. do not specify trr. For applications where switching speed is critical, faster recovery time is beneficial.

Q: Can I use a higher-current-rated part in place of BAS40-05-7?

A: Yes, if the application circuit current does not exceed the original 200 mA specification. Higher-rated parts such as BAT54CFILM (300 mA) and BAT6405E6327HTSA1 (250 mA) provide additional current margin and are suitable for direct substitution. Using a higher-rated part does not degrade performance in lower-current applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message