BAV19W-7 Equivalent & Substitute Parts

Part Overview

The BAV19W-7 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100 V DC reverse voltage and 400 mA average rectified current in a surface mount SOD-123 package. This component is classified as discontinued at DiGi Electronics, which necessitates identification of equivalent and substitute parts for ongoing design requirements and production continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter tolerances for general-purpose rectification applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	400	mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 200 mA	V
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	100 nA @ 100 V	nA
Capacitance @ Vr, F	5 pF @ 0V, 1MHz	pF
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Standard	—
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	—

Substitute Part Grouping Explanation

Substitution of the BAV19W-7 is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a minimum DC reverse voltage rating of 100 V to ensure equivalent reverse bias protection.

Current Rating: The BAV19W-7 is rated for 400 mA average rectified current. Substitute parts rated at 200 mA represent a reduced current capability and are classified as functional substitutes suitable for applications where the full 400 mA rating is not required.

Package and Mounting: All listed substitutes utilize the SOD-123 surface mount package, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Forward Voltage Characteristics: Forward voltage drop at specified test conditions affects circuit efficiency and power dissipation. Variations in Vf are acceptable within the context of general-purpose rectification.

Reverse Recovery Time and Leakage: These parameters define switching speed and standby current characteristics. Faster recovery times (4 ns versus 50 ns) indicate improved high-frequency performance, while leakage current variations are acceptable for non-critical applications.

Compliance and Status: Active product status and RoHS3 compliance are preferred for new designs and long-term supply assurance.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) [V]	trr [ns]	Ir @ Vr [nA/µA]	Package	Status	RoHS
BAV19W-7	Diodes Incorporated	100	400	1.25 @ 200mA	50	100 nA @ 100V	SOD-123	Discontinued	Non-compliant
BAV19W-7-F	Diodes Incorporated	100	400	1.25 @ 200mA	50	100 nA @ 100V	SOD-123	Active	ROHS3 Compliant
BAV19W-TP	Micro Commercial Co	100	200	1.25 @ 200mA	50	100 nA @ 100V	SOD-123	Active	ROHS3 Compliant
MMSD4148T1G	onsemi	100	200	1 @ 10mA	4	5 µA @ 75V	SOD-123	Active	ROHS3 Compliant
MMSD4148T3G	onsemi	100	200	1 @ 10mA	4	5 µA @ 75V	SOD-123	Active	ROHS3 Compliant
MMSD4448	Fairchild Semiconductor	100	200	1 @ 100mA	4	5 µA @ 75V	SOD-123	Active	Not specified
MMSD914T1G	onsemi	100	200	1 @ 10mA	4	5 µA @ 75V	SOD-123	Active	ROHS3 Compliant
MMSD914T3G	onsemi	100	200	1 @ 10mA	4	5 µA @ 75V	SOD-123	Active	ROHS3 Compliant
SMMSD4148T1G	onsemi	100	200	1 @ 10mA	4	5 µA @ 75V	SOD-123	Active	ROHS3 Compliant
SMMSD4148T3G	onsemi	100	200	1 @ 10mA	4	5 µA @ 75V	SOD-123	Active	ROHS3 Compliant
SMMSD914T1G	onsemi	100	200	1 @ 10mA	4	5 µA @ 75V	SOD-123	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Identical Specifications):

BAV19W-7-F is the direct equivalent to BAV19W-7, maintaining all electrical and mechanical parameters. This part is manufactured by Diodes Incorporated with active product status and RoHS3 compliance, providing the most straightforward replacement path for discontinued BAV19W-7 inventory.

Functional Substitutes (Reduced Current Rating):

All remaining substitute parts are rated for 200 mA average rectified current, representing a 50% reduction from the BAV19W-7 specification. These parts are suitable for applications where the circuit design does not require the full 400 mA capability. All functional substitutes maintain the 100 V reverse voltage rating and SOD-123 package compatibility.

Compliance Considerations:

BAV19W-7-F, MMSD4148T1G, MMSD4148T3G, MMSD914T1G, MMSD914T3G, SMMSD4148T1G, SMMSD4148T3G, and SMMSD914T1G are RoHS3 compliant, meeting current environmental and regulatory requirements for new product designs and manufacturing.

Product Status:

All substitute parts listed maintain active product status with established supply chains and manufacturing continuity, ensuring long-term availability for production requirements.

Packaging Variants:

onsemi MMSD and SMMSD series parts are available in both Cut Tape (CT) & Digi-Reel and Tape & Reel (TR) packaging options. Selection between packaging variants depends on assembly process requirements and order quantities.

Frequently Asked Questions (FAQ)

Q: Can BAV19W-7-F be used as a direct replacement for BAV19W-7?

A: Yes. BAV19W-7-F is electrically and mechanically identical to BAV19W-7, with the same 100 V reverse voltage rating, 400 mA current rating, and SOD-123 package. BAV19W-7-F is active and RoHS3 compliant.

Q: What is the difference between the BAV19W-7 and the 200 mA rated substitutes?

A: The primary difference is the average rectified current rating. BAV19W-7 is rated for 400 mA, while MMSD914T1G, MMSD4148T1G, and related variants are rated for 200 mA. Both maintain the same 100 V reverse voltage rating and SOD-123 package. The 200 mA substitutes are suitable for applications where circuit current requirements do not exceed 200 mA.

Q: Are all substitute parts compatible with existing PCB layouts designed for BAV19W-7?

A: Yes. All listed substitute parts use the SOD-123 surface mount package, ensuring mechanical and thermal compatibility with PCB layouts designed for BAV19W-7. Pin configuration and footprint are identical across all parts.

Q: What is the difference between MMSD914T1G and MMSD4148T1G?

A: Both parts are rated for 100 V reverse voltage and 200 mA average rectified current in SOD-123 packages. The primary differences are in forward voltage characteristics and reverse recovery time specifications. MMSD914T1G and MMSD4148T1G are functionally equivalent for general-purpose rectification applications.

Q: What does the packaging designation "T1G" versus "T3G" indicate?

A: "T1G" indicates Cut Tape (CT) & Digi-Reel packaging, while "T3G" indicates Tape & Reel (TR) packaging. Both packaging formats contain identical electronic components; the difference is in the physical delivery format for assembly processes.

Q: Is SMMSD914T1G suitable for automotive applications?

A: SMMSD914T1G is qualified to AEC-Q101 automotive standards and carries an automotive grade designation, making it suitable for automotive applications. Other onsemi MMSD and SMMSD variants without automotive qualification are suitable for industrial and commercial applications.

Q: Why is the reverse recovery time different between BAV19W-7 and MMSD914T1G?

A: BAV19W-7 has a reverse recovery time of 50 ns, while MMSD914T1G has 4 ns. The faster recovery time in MMSD914T1G indicates improved high-frequency switching performance. For general-purpose rectification at lower frequencies, both specifications are acceptable.

Q: Can BAV19W-TP be used in all applications where BAV19W-7 is specified?

A: BAV19W-TP can be used in applications where the circuit current requirement does not exceed 200 mA. BAV19W-TP maintains the same 100 V reverse voltage rating, forward voltage characteristics, and SOD-123 package as BAV19W-7. Applications requiring the full 400 mA capability require BAV19W-7-F or equivalent 400 mA rated parts.

Q: What is the moisture sensitivity level (MSL) for these diodes?

A: All listed parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

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