BAV99LT3G Equivalent & Substitute Parts

Part Overview

The BAV99LT3G is a general-purpose diode array manufactured by onsemi, configured as 1 pair series connection with a maximum reverse voltage of 100 V and average rectified current of 215 mA per diode. The device is housed in a SOT-23-3 surface mount package and is classified as Active product status. This part is suitable for applications requiring fast recovery characteristics with a reverse recovery time of 6 ns and operates across a junction temperature range of -65°C to 150°C.

Equivalent and substitute parts are identified to provide design flexibility when the primary part is unavailable, when alternative packaging formats are required, or when design specifications permit operation within relaxed electrical parameters while maintaining functional compatibility.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Series Connection	—
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io) (per Diode)	215	mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.25 @ 150	V @ mA
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	6	ns
Current - Reverse Leakage @ Vr	2.5 @ 70	µA @ V
Operating Temperature - Junction	-65 to 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 BAV99LT3G are categorized based on electrical parameter compatibility and packaging format. The substitution logic is structured as follows:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 100 V reverse voltage, 215 mA average rectified current, 1.25 V forward voltage at 150 mA, 6 ns reverse recovery time, and -65°C to 150°C operating temperature range. These parts differ only in manufacturer, product grade (standard versus automotive), or packaging format (Cut Tape versus Tape & Reel).

Similar Parts share the same SOT-23-3 package and general-purpose diode array configuration but operate within relaxed electrical parameters. These parts are suitable for applications where the design specifications permit reduced reverse voltage ratings, increased current capacity, or alternative diode technologies (such as Schottky), provided the application requirements are met.

Key parameters determining substitution eligibility:

Diode configuration (1 Pair Series Connection)
Package type (SOT-23-3 surface mount)
Reverse voltage rating (100 V minimum for direct equivalence)
Average rectified current (215 mA minimum for direct equivalence)
Forward voltage characteristics (1.25 V @ 150 mA)
Operating temperature range (-65°C to 150°C minimum)
RoHS3 compliance and MSL 1 rating

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) @ If [V @ mA]	trr [ns]	Ir @ Vr [µA @ V]	Tj Range [°C]	Package	Grade	Product Status
BAV99LT3G	onsemi	100	215	1.25 @ 150	6	2.5 @ 70	-65 to 150	SOT-23-3	Standard	Active
BAV99LT1G	onsemi	100	215	1.25 @ 150	6	2.5 @ 70	-65 to 150	SOT-23-3	Standard	Active
SBAV99LT1G	onsemi	100	215	1.25 @ 150	6	1 @ 100	-65 to 150	SOT-23-3	Automotive (AEC-Q101)	Active
SBAV99LT3G	onsemi	100	215	1.25 @ 150	6	2.5 @ 70	-65 to 150	SOT-23-3	Automotive (AEC-Q101)	Active
BAV99,215	Nexperia USA Inc.	100	215	1.25 @ 150	4	0.5 @ 80	-65 to 150	SOT-23-3	Automotive (AEC-Q101)	Active
BAV99,235	Nexperia USA Inc.	100	215	1.25 @ 150	4	0.5 @ 80	-65 to 150	SOT-23-3	Automotive (AEC-Q101)	Active
BAV99-7-F	Diodes Incorporated	75	300	1.25 @ 150	4	2.5 @ 75	-65 to 150	SOT-23-3	Standard	Active
BAV99-13-F	Diodes Incorporated	75	300	1.25 @ 150	4	2.5 @ 75	-65 to 150	SOT-23-3	Standard	Active
BAV99-E3-18	Vishay General Semiconductor - Diodes Division	70	150	1.25 @ 150	6	2.5 @ 70	-55 to 150	SOT-23-3	Standard	Active
BAS70-04FILM	STMicroelectronics	70	70	1 @ 15	—	10 @ 70	-65 to 150	SOT-23-3	Standard	Active
BAV99	Diodes Incorporated	75	215	1.25 @ 150	4	2.5 @ 75	-65 to 175	SOT-363	Automotive (AEC-Q101)	Last Time Buy

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended for Pin-Compatible Replacement)

BAV99LT1G, SBAV99LT1G, SBAV99LT3G, BAV99,215, and BAV99,235 are direct parametric equivalents to the BAV99LT3G. These parts maintain identical or superior electrical specifications across all critical parameters and are suitable for direct substitution in existing designs. SBAV99LT1G and SBAV99LT3G carry automotive-grade qualification (AEC-Q101), providing enhanced reliability for automotive and industrial applications. BAV99,215 and BAV99,235 from Nexperia USA Inc. offer improved reverse recovery time (4 ns versus 6 ns) and lower reverse leakage current (0.5 µA @ 80 V versus 2.5 µA @ 70 V), resulting in superior switching performance and reduced power dissipation.

Relaxed-Parameter Alternatives (Application-Dependent Substitution)

BAV99-7-F and BAV99-13-F from Diodes Incorporated operate at reduced reverse voltage (75 V) but provide increased current capacity (300 mA versus 215 mA). These parts are suitable for applications where the design voltage margin permits 75 V operation and where higher current handling is beneficial. Both parts maintain the same forward voltage characteristics and operating temperature range as the primary part.

BAV99-E3-18 from Vishay General Semiconductor operates at 70 V reverse voltage with reduced current capacity (150 mA). This part is suitable only for applications with significantly relaxed voltage and current requirements.

BAS70-04FILM from STMicroelectronics is a Schottky diode array with 70 V reverse voltage and 70 mA current capacity. The Schottky technology provides lower forward voltage (1 V @ 15 mA) but exhibits higher reverse leakage current (10 µA @ 70 V). This part is suitable only for applications where Schottky characteristics are acceptable and voltage/current requirements are substantially reduced.

Package Consideration

BAV99 from Diodes Incorporated uses SOT-363 package (6-TSSOP) instead of SOT-23-3, requiring PCB layout modification. This part carries Last Time Buy status and is not recommended for new designs.

Compliance and Certification

All recommended parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. Automotive-qualified variants (SBAV99LT1G, SBAV99LT3G, BAV99,215, BAV99,235) carry AEC-Q101 certification and are suitable for automotive applications requiring enhanced qualification documentation.

Frequently Asked Questions (FAQ)

Q: Can BAV99LT1G be used as a direct replacement for BAV99LT3G?

A: Yes. BAV99LT1G is a parametric equivalent with identical electrical specifications. The primary difference is packaging format: BAV99LT3G is supplied in Cut Tape (CT) & Digi-Reel format, while BAV99LT1G is also available in Cut Tape format. Both parts are manufactured by onsemi and maintain the same SOT-23-3 package, pinout, and electrical performance.

Q: What is the difference between standard-grade and automotive-grade BAV99 variants?

A: Automotive-grade variants (SBAV99LT1G, SBAV99LT3G) carry AEC-Q101 qualification, indicating compliance with automotive industry reliability and testing standards. These parts typically exhibit tighter parameter tolerances and lower reverse leakage current. Standard-grade parts (BAV99LT3G, BAV99LT1G) are suitable for general-purpose applications. Selection depends on application requirements and qualification documentation needs.

Q: Can BAV99-7-F or BAV99-13-F be used in place of BAV99LT3G?

A: Conditional substitution is possible if design specifications permit 75 V reverse voltage operation instead of 100 V. Both parts provide increased current capacity (300 mA versus 215 mA) and maintain identical forward voltage and operating temperature characteristics. These parts are suitable for applications with reduced voltage margin requirements. Verify that the 25 V reduction in reverse voltage rating does not compromise circuit safety margins.

Q: Why is BAS70-04FILM listed as a similar part rather than a direct equivalent?

A: BAS70-04FILM is a Schottky diode array with fundamentally different electrical characteristics. It operates at 70 V reverse voltage (30 V lower than BAV99LT3G), carries only 70 mA current (145 mA lower), and exhibits higher reverse leakage current (10 µA versus 2.5 µA). Schottky technology provides lower forward voltage but is not directly interchangeable. This part is suitable only for applications where Schottky characteristics are explicitly required and voltage/current specifications are substantially relaxed.

Q: What is the significance of reverse recovery time (trr) in selecting a substitute?

A: Reverse recovery time determines switching speed and affects power dissipation in high-frequency applications. BAV99LT3G specifies 6 ns trr. Nexperia variants (BAV99,215 and BAV99,235) offer improved 4 ns trr, resulting in faster switching and reduced switching losses. Diodes Incorporated variants (BAV99-7-F, BAV99-13-F) also provide 4 ns trr. For applications operating at frequencies below 1 MHz, trr differences are typically negligible. For high-frequency switching applications, faster trr variants provide performance advantages.

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

A: All parts except BAV99 from Diodes Incorporated are available in SOT-23-3 package. BAV99 from Diodes Incorporated uses SOT-363 (6-TSSOP) package, which requires different PCB footprint and is not pin-compatible. This part is marked Last Time Buy and is not recommended for new designs.

Q: What does MSL 1 (Unlimited) moisture sensitivity rating mean?

A: MSL 1 indicates the lowest moisture sensitivity level, meaning the component can be stored indefinitely without moisture bake-out requirements prior to soldering. All listed parts carry MSL 1 rating, eliminating moisture-related handling constraints.

Q: Can SBAV99LT3G be used in non-automotive applications?

A: Yes. SBAV99LT3G is a superset of BAV99LT3G with identical electrical specifications and enhanced automotive qualification. It can be used in any application where BAV99LT3G is specified. The automotive qualification does not restrict use in general-purpose applications; it only certifies compliance with automotive industry standards.

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