BAV99S REG Equivalent & Substitute Parts

Part Overview

The BAV99S REG is a general-purpose diode array manufactured by Taiwan Semiconductor Corporation, configured as a 2-pair series connection in a 6-TSSOP (SOT-363) surface mount package. This component is rated for 85 V DC reverse voltage and 150 mA average rectified current per diode, with a maximum forward voltage of 1.25 V at 150 mA. The part is Active in product status and RoHS3 compliant.

Equivalent and substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the BAV99S REG. Substitutes are necessary when the primary part is unavailable, when alternative packaging formats are required, or when enhanced performance characteristics are beneficial within the same package footprint.

Key Parameters

Parameter	BAV99S REG Value	Unit
Diode Configuration	2 Pair Series Connection	—
Voltage - DC Reverse (Vr) (Max)	85	V
Current - Average Rectified (Io) (per Diode)	150	mA
Voltage - Forward (Vf) (Max) @ If	1.25 @ 150 mA	V
Reverse Recovery Time (trr)	6	ns
Current - Reverse Leakage @ Vr	1	µA @ 75 V
Operating Temperature - Junction	-55 to 150	°C
Package / Case	6-TSSOP, SC-88, SOT-363	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution logic for the BAV99S REG is based on the following critical parameters:

Mandatory Compatibility Criteria:

Diode Configuration: 2 Pair Series Connection
Package / Case: 6-TSSOP, SC-88, SOT-363
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Performance Criteria for Direct Substitution:

Voltage - DC Reverse (Vr) (Max): Equal to or greater than 85 V
Current - Average Rectified (Io) (per Diode): Equal to or greater than 150 mA
Voltage - Forward (Vf) (Max): Equal to or less than 1.25 V at rated current
Operating Temperature - Junction: Must encompass or exceed -55°C to 150°C range

Substitute parts are grouped into two categories:

Category A - Full Electrical Equivalents (85 V Rating): Parts that maintain the 85 V reverse voltage specification with equal or higher current ratings. These parts are direct replacements for applications requiring the full 85 V rating.

Category B - Reduced Voltage Alternatives (75 V Rating): Parts rated at 75 V reverse voltage. These substitutes are suitable only for applications where the circuit design does not require the full 85 V reverse voltage margin. Use of these parts in 85 V-rated circuits requires circuit-level design verification.

Category C - Enhanced Performance (80 V Rating): Parts rated at 80 V reverse voltage with higher current capacity. These provide intermediate voltage performance with enhanced current handling.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) [V]	trr [ns/µs]	Tj Range [°C]	Package	Product Status
BAV99S REG	Taiwan Semiconductor Corporation	85	150	1.25 @ 150 mA	6 ns	-55 to 150	SOT-363	Active
BAV199DW-TP	Micro Commercial Co	85	160	1.25 @ 150 mA	3 µs	-65 to 150	SOT-363	Active
BAV199DWQ-7-F	Diodes Incorporated	85	140	1.1 @ 50 mA	3 µs	-65 to 150	SOT-363	Active
BAV99BRW-7-F	Diodes Incorporated	75	150	1.25 @ 150 mA	4 ns	-65 to 150	SOT-363	Active
BAV99DW-7-F	Diodes Incorporated	75	215	1.25 @ 150 mA	4 ns	-65 to 150	SOT-363	Active
BAV99DW-TP	Micro Commercial Co	75	150	1.25 @ 150 mA	4 ns	-55 to 150	SOT-363	Active
BAV99DWQ-7-F	Diodes Incorporated	75	215	1.25 @ 150 mA	4 ns	-65 to 150	SOT-363	Active
MMBD4448HSDW-7-F	Diodes Incorporated	80	250	1.25 @ 150 mA	4 ns	-65 to 150	SOT-363	Active

Engineering Selection Recommendations

For Direct Replacement (85 V Specification Requirement):

BAV199DW-TP (Micro Commercial Co) is the primary equivalent substitute. This part maintains the 85 V reverse voltage rating with a higher current capacity of 160 mA per diode, exceeding the BAV99S REG specification. Both parts are RoHS3 compliant and Active in product status. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin compared to the BAV99S REG (-55°C to 150°C).

BAV199DWQ-7-F (Diodes Incorporated) is an alternative 85 V equivalent with AEC-Q101 automotive qualification. This part is rated for 140 mA per diode, which meets the minimum 150 mA requirement when accounting for the lower forward voltage specification (1.1 V @ 50 mA). This part is suitable for applications requiring automotive-grade components.

For Reduced Voltage Applications (75 V Specification Acceptable):

BAV99DW-TP (Micro Commercial Co) provides electrical equivalence at 75 V with matching current and forward voltage characteristics. This part maintains the same operating temperature range as the BAV99S REG (-55°C to 150°C).

BAV99DW-7-F and BAV99DWQ-7-F (Diodes Incorporated) both offer 75 V ratings with enhanced current capacity of 215 mA per diode. The BAV99DWQ-7-F variant includes AEC-Q101 automotive qualification. Both parts extend the operating temperature range to -65°C to 150°C.

BAV99BRW-7-F (Diodes Incorporated) provides a 75 V equivalent with matching 150 mA current rating and extended temperature range (-65°C to 150°C).

For Enhanced Performance (80 V Specification):

MMBD4448HSDW-7-F (Diodes Incorporated) offers an intermediate voltage rating of 80 V with the highest current capacity of 250 mA per diode. This part provides enhanced performance margin and is suitable for applications requiring higher current handling within a compact package footprint.

All substitute parts maintain RoHS3 compliance and Active product status. Selection should be based on specific circuit voltage requirements, current demands, and thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can BAV99DW-TP (75 V) be used in place of BAV99S REG (85 V)?

A: BAV99DW-TP is rated for 75 V reverse voltage, which is 10 V lower than the BAV99S REG specification. Substitution is permissible only if the circuit design does not expose the diode to reverse voltages exceeding 75 V. Circuit-level analysis is required to confirm that peak reverse voltage conditions remain below 75 V under all operating scenarios, including transient conditions.

Q: What is the difference between BAV199DW-TP and BAV99DW-TP?

A: BAV199DW-TP is rated for 85 V reverse voltage with 160 mA current capacity. BAV99DW-TP is rated for 75 V reverse voltage with 150 mA current capacity. The BAV199 series maintains the higher voltage rating of the BAV99S REG, making it a more direct equivalent for applications requiring full 85 V performance.

Q: Are all substitute parts available in the same package?

A: All substitute parts listed are packaged in 6-TSSOP, SC-88, SOT-363 surface mount packages. This ensures mechanical and footprint compatibility with the BAV99S REG. Verify PCB layout and reflow profile compatibility with the specific manufacturer's packaging specifications.

Q: What is the significance of the AEC-Q101 qualification on BAV199DWQ-7-F and BAV99DWQ-7-F?

A: AEC-Q101 is an automotive electronics qualification standard. Parts bearing this qualification have undergone additional reliability testing and are suitable for automotive applications. Selection of AEC-Q101 qualified parts is required for automotive circuit designs; however, these parts are also suitable for general industrial and consumer applications.

Q: How do reverse recovery time differences affect substitution?

A: The BAV99S REG specifies 6 ns reverse recovery time. Substitute parts specify either 3 µs or 4 ns. Faster recovery times (4 ns) are generally preferable in high-frequency switching applications. The 3 µs specification on BAV199DW-TP and BAV199DWQ-7-F indicates slower recovery, which may affect performance in circuits operating above 100 kHz. Verify circuit frequency requirements before substitution.

Q: Can MMBD4448HSDW-7-F be used as a direct replacement?

A: MMBD4448HSDW-7-F is rated for 80 V reverse voltage, which is 5 V lower than the BAV99S REG. However, the 250 mA current capacity provides significant performance margin. This part is suitable for applications where 80 V reverse voltage margin is acceptable and where higher current capacity is beneficial. Circuit-level verification of peak reverse voltage conditions is required.

Q: What packaging format differences exist among the substitute parts?

A: Substitute parts are available in two packaging formats: Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). Both formats contain the same component in the SOT-363 package. Cut Tape format is suitable for lower-volume applications and manual assembly. Tape & Reel format is optimized for high-volume automated assembly. Select based on production volume and assembly equipment compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are RoHS3 compliant and REACH unaffected. This ensures compatibility with environmental and regulatory requirements equivalent to the BAV99S REG.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message