BAV74 Equivalent & Substitute Parts

Part Overview

The BAV74 is a general-purpose diode array featuring one pair of common cathode configuration rated for 50 V DC reverse voltage and 200 mA average rectified current per diode. Manufactured by onsemi in a surface mount TO-236-3 (SOT-23-3) package, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts maintain the same package footprint and core electrical characteristics while offering active product status and extended availability.

Key Parameters

Parameter	BAV74 (onsemi)
Diode Configuration	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io) (per Diode)	200 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA
Reverse Recovery Time (trr)	4 ns
Current - Reverse Leakage @ Vr	100 nA @ 50 V
Operating Temperature - Junction (Max)	150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the BAV74 are classified into three categories based on electrical and mechanical compatibility:

Direct Manufacturer Substitutes (Recommended): Parts that maintain identical electrical specifications and package configuration while offering active product status. These parts are pin-compatible and functionally equivalent with no design modifications required.

Parametric Equivalents: Parts from alternative manufacturers that match the core electrical parameters (50 V reverse voltage, 200 mA current rating, 4 ns recovery time) and identical package footprint. These parts are suitable for direct replacement in existing designs.

Similar Parts with Reduced Ratings: Parts that share the same package and configuration but operate at lower voltage or current ratings. These parts are suitable only for applications where the reduced ratings are acceptable and do not exceed circuit requirements.

The key parameters determining substitution eligibility are:

Diode configuration (1 Pair Common Cathode)
Voltage - DC Reverse (Vr) rating of 50 V or higher
Current - Average Rectified (Io) rating of 200 mA or higher
Package type (TO-236-3, SC-59, SOT-23-3)
Reverse Recovery Time (trr) of 4 ns or faster
Surface mount technology

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr (ns)	Package	Product Status	Substitution Category
BAV74	onsemi	50 V	200 mA	1 V @ 100 mA	4	SOT-23-3	Obsolete	Main Part
BAV74LT1G	onsemi	50 V	200 mA (DC)	1 V @ 100 mA	4	SOT-23-3	Active	Direct Manufacturer Substitute
BAV74,215	Nexperia USA Inc.	50 V	215 mA (DC)	1 V @ 100 mA	4	SOT-23-3	Active	Parametric Equivalent
BAV74,235	Nexperia USA Inc.	50 V	215 mA (DC)	1 V @ 100 mA	4	SOT-23-3	Active	Parametric Equivalent
BAV74	Fairchild Semiconductor	50 V	200 mA	1 V @ 100 mA	4	SOT-23-3	Active	Parametric Equivalent
BAV74-TP	Micro Commercial Co	50 V	200 mA	1 V @ 100 mA	4	SOT-23-3	Active	Parametric Equivalent
M1MA151WKT1G	onsemi	40 V	100 mA (DC)	1.2 V @ 100 mA	3	SC-59	Active	Similar Part (Reduced Ratings)
SM1MA151WKT1G	onsemi	40 V	100 mA (DC)	1.2 V @ 100 mA	3	SC-59	Active	Similar Part (Reduced Ratings)
BAV70-E3-08	Vishay General Semiconductor - Diodes Division	70 V	250 mA (DC)	1.25 V @ 150 mA	6	SOT-23-3	Active	Similar Part (Enhanced Ratings)
BAV70E6327HTSA1	Infineon Technologies	80 V	200 mA (DC)	1.25 V @ 150 mA	4	SOT-23-3	Last Time Buy	Similar Part (Enhanced Ratings)

Engineering Selection Recommendations

For Direct Replacement in Active Production:

BAV74LT1G (onsemi) is the primary recommended substitute. This part maintains identical electrical specifications to the original BAV74, operates at the same voltage and current ratings, and carries active product status with RoHS3 compliance. The part is available in Cut Tape and Digi-Reel packaging formats.

For Equivalent Performance with Alternative Sourcing:

BAV74,215 and BAV74,235 (Nexperia USA Inc.) provide parametric equivalence with slightly enhanced current ratings (215 mA versus 200 mA). Both parts maintain 50 V reverse voltage, 4 ns recovery time, and identical forward voltage characteristics. These parts are suitable for direct PCB replacement without circuit modification.

BAV74-TP (Micro Commercial Co) offers parametric equivalence with active product status and extended operating temperature range (-55°C to 150°C). This part is appropriate for applications requiring wider temperature performance.

BAV74 (Fairchild Semiconductor) provides parametric equivalence with identical electrical specifications and active product status.

For Applications with Enhanced Voltage or Current Requirements:

BAV70-E3-08 (Vishay) and BAV70E6327HTSA1 (Infineon) offer higher voltage ratings (70 V and 80 V respectively) and increased current capacity (250 mA and 200 mA respectively). These parts are suitable for applications where the original 50 V / 200 mA specification is insufficient. Note that BAV70E6327HTSA1 carries Last Time Buy status.

Parts Not Recommended for Direct Substitution:

M1MA151WKT1G and SM1MA151WKT1G feature reduced voltage (40 V) and current (100 mA) ratings compared to the BAV74 specification. These parts are suitable only for applications where the reduced ratings do not exceed circuit requirements. SM1MA151WKT1G includes automotive qualification (AEC-Q101) for applications requiring automotive-grade components.

All recommended substitute parts maintain RoHS3 compliance and REACH unaffected status consistent with the original BAV74 specification.

Frequently Asked Questions (FAQ)

Q: Can BAV74LT1G be used as a direct replacement for the obsolete BAV74?

A: Yes. BAV74LT1G is manufactured by onsemi and maintains identical electrical specifications including 50 V reverse voltage, 200 mA current rating, 1 V forward voltage at 100 mA, and 4 ns recovery time. The part uses the same SOT-23-3 package and is pin-compatible. BAV74LT1G carries active product status and is available in standard packaging formats.

Q: What is the difference between BAV74,215 and BAV74,235?

A: Both parts are manufactured by Nexperia USA Inc. and provide identical electrical specifications. The primary difference is the packaging designation (TO-236AB). Both parts maintain 50 V reverse voltage, 215 mA current rating, 1 V forward voltage, and 4 ns recovery time. Selection between these parts depends on supplier availability and packaging preference.

Q: Are the M1MA151WKT1G and SM1MA151WKT1G suitable replacements for the BAV74?

A: These parts are not suitable for direct replacement in applications requiring the full 50 V / 200 mA specification. M1MA151WKT1G and SM1MA151WKT1G are rated for 40 V reverse voltage and 100 mA current per diode, representing a 50% reduction in both voltage and current ratings. These parts are suitable only for applications where the reduced ratings are acceptable. SM1MA151WKT1G includes automotive qualification (AEC-Q101) for automotive applications.

Q: Can BAV70-E3-08 or BAV70E6327HTSA1 be used in place of the BAV74?

A: These parts are electrically compatible for applications where higher voltage and current ratings are beneficial or required. BAV70-E3-08 provides 70 V reverse voltage and 250 mA current rating. BAV70E6327HTSA1 provides 80 V reverse voltage and 200 mA current rating. Both parts use the same SOT-23-3 package and are pin-compatible. However, forward voltage characteristics differ slightly (1.25 V versus 1 V), which may affect circuit performance in precision applications. BAV70E6327HTSA1 carries Last Time Buy status, limiting long-term availability.

Q: What packaging options are available for BAV74 substitutes?

A: BAV74LT1G is available in Cut Tape (CT) and Digi-Reel packaging. BAV74,215 and BAV74,235 are available in Tape & Reel (TR) format. BAV74-TP is available in Tape & Reel format. All parts maintain the SOT-23-3 package footprint suitable for automated assembly processes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts carry RoHS3 compliance and REACH unaffected status, consistent with the original BAV74 specification. This compliance applies to BAV74LT1G, BAV74,215, BAV74,235, BAV74 (Fairchild), BAV74-TP, BAV70-E3-08, BAV70E6327HTSA1, M1MA151WKT1G, and SM1MA151WKT1G.

Q: What is the operating temperature range for BAV74 substitutes?

A: The original BAV74 specifies a maximum junction temperature of 150°C. BAV74LT1G and BAV74-TP extend the operating range to -55°C to 150°C. Other substitutes specify a maximum junction temperature of 150°C. For applications requiring extended low-temperature operation, BAV74LT1G or BAV74-TP are recommended.

Q: Is the BAV74 from Fairchild Semiconductor still available?

A: Yes. BAV74 from Fairchild Semiconductor carries active product status and maintains identical electrical specifications to the original onsemi part. This part provides an alternative sourcing option with equivalent performance and compliance characteristics.

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