BAV99 Equivalent & Substitute Parts

Part Overview

The BAV99 is a general-purpose diode array in a 1 Pair Series Connection configuration, rated for 70 V DC reverse voltage and 200 mA average rectified current per diode. Manufactured by onsemi, this component is packaged in the SOT-23-3 (TO-236-3, SC-59) surface mount form factor and operates across a junction temperature range of -55°C to 150°C.

The BAV99 from onsemi is classified as Obsolete. Identification of equivalent and substitute parts is necessary to support ongoing design requirements, manufacturing continuity, and system reliability where this component is specified or currently deployed.

Key Parameters

Parameter	BAV99 (onsemi)
Diode Configuration	1 Pair Series Connection
Voltage - DC Reverse (Vr) (Max)	70 V
Current - Average Rectified (Io) (per Diode)	200 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA
Reverse Recovery Time (trr)	6 ns
Current - Reverse Leakage @ Vr	2.5 µA @ 70 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the BAV99 is determined by the following critical parameters:

Configuration Match: Diode configuration must be 1 Pair Series Connection to maintain circuit topology compatibility.

Voltage Rating: The DC reverse voltage (Vr) must equal or exceed 70 V. Substitute parts with higher voltage ratings (80 V, 85 V, 100 V) are electrically compatible and provide enhanced voltage margin.

Current Rating: The average rectified current (Io) per diode must equal or exceed 200 mA. Substitute parts with 215 mA, 300 mA, or higher ratings provide increased current capacity while remaining backward compatible.

Forward Voltage: Forward voltage (Vf) at specified current must be within acceptable operating parameters. All identified substitutes maintain 1.25 V @ 150 mA or lower forward voltage specifications.

Package Compatibility: All substitute parts maintain the SOT-23-3 (TO-236-3, SC-59) surface mount package, ensuring mechanical and electrical pin compatibility.

Temperature Range: Operating temperature range must support the application requirements. Substitutes with extended temperature ranges (-65°C to 150°C or higher) provide additional operational margin.

Substitute parts are grouped into two categories: Direct Manufacturer Substitutes (onsemi products with enhanced specifications) and Cross-Manufacturer Alternatives (Infineon, Diodes Incorporated, Micro Commercial Co) that meet or exceed the BAV99 electrical and mechanical requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Tj (Operating)	Package	Product Status
BAV99	onsemi	70 V	200 mA	1.25 V @ 150 mA	6 ns	-55°C ~ 150°C	SOT-23-3	Obsolete
SBAV99LT1G	onsemi	100 V	215 mA (DC)	1.25 V @ 150 mA	6 ns	-65°C ~ 150°C	SOT-23-3	Active
BAV99LT1G	onsemi	100 V	215 mA (DC)	1.25 V @ 150 mA	6 ns	-65°C ~ 150°C	SOT-23-3	Active
BAV99LT3G	onsemi	100 V	215 mA (DC)	1.25 V @ 150 mA	6 ns	-65°C ~ 150°C	SOT-23-3	Active
BAV99-TP-HF	Micro Commercial Co	100 V	200 mA	1.25 V @ 150 mA	4 ns	-55°C ~ 150°C	SOT-23-3	Active
BAV199E6327HTSA1	Infineon Technologies	80 V	200 mA (DC)	1.25 V @ 150 mA	1.5 µs	-55°C ~ 150°C	SOT-23-3	Last Time Buy
BAV199E6433HTMA1	Infineon Technologies	80 V	200 mA (DC)	1.25 V @ 150 mA	1.5 µs	-55°C ~ 150°C	SOT-23-3	Last Time Buy
BAV199Q-13-F	Diodes Incorporated	85 V	140 mA (DC)	1.1 V @ 50 mA	3 µs	-65°C ~ 150°C	SOT-23-3	Active
BAV199Q-7-F	Diodes Incorporated	85 V	140 mA (DC)	1.1 V @ 50 mA	3 µs	-65°C ~ 150°C	SOT-23-3	Active
BAV99-13-F	Diodes Incorporated	75 V	300 mA (DC)	1.25 V @ 150 mA	4 ns	-65°C ~ 150°C	SOT-23-3	Active

Engineering Selection Recommendations

Primary Substitutes (onsemi Ecosystem):

SBAV99LT1G, BAV99LT1G, and BAV99LT3G are direct onsemi alternatives with Active product status. These parts provide enhanced voltage rating (100 V vs. 70 V), increased current capacity (215 mA vs. 200 mA), and extended lower temperature limit (-65°C vs. -55°C). All three maintain identical forward voltage characteristics and reverse recovery time. SBAV99LT1G carries AEC-Q101 automotive qualification and is ROHS3 compliant. BAV99LT1G and BAV99LT3G are ROHS3 compliant with high inventory availability.

Cross-Manufacturer Alternatives:

BAV99-TP-HF (Micro Commercial Co) provides 100 V voltage rating with matched 200 mA current rating and improved reverse recovery time (4 ns vs. 6 ns). This part maintains identical forward voltage and operating temperature range to the original BAV99.

BAV199E6327HTSA1 and BAV199E6433HTMA1 (Infineon Technologies) offer 80 V voltage rating with 200 mA current capacity. Both are ROHS3 compliant but carry Last Time Buy status, indicating limited future availability.

BAV199Q-13-F and BAV199Q-7-F (Diodes Incorporated) provide 85 V voltage rating with extended temperature range (-65°C to 150°C) and AEC-Q101 automotive qualification. Current rating is 140 mA, which is below the original 200 mA specification and requires circuit evaluation for suitability.

BAV99-13-F (Diodes Incorporated) offers the highest current capacity (300 mA) with 75 V voltage rating, extended temperature range, and Active product status. This part is suitable for applications requiring increased current margin.

Compliance Considerations:

All identified substitutes maintain REACH Unaffected status and EAR99 export classification. ROHS3 compliance is confirmed for onsemi BAV99LT1G, BAV99LT3G, SBAV99LT1G, Infineon BAV199E6327HTSA1, BAV199E6433HTMA1, and Diodes Incorporated BAV199Q-13-F, BAV199Q-7-F, BAV99-13-F.

Automotive-grade parts with AEC-Q101 qualification are available from onsemi (SBAV99LT1G) and Diodes Incorporated (BAV199Q-13-F, BAV199Q-7-F).

Frequently Asked Questions (FAQ)

Q: Can SBAV99LT1G, BAV99LT1G, or BAV99LT3G be used as direct replacements for the obsolete BAV99?

A: Yes. All three parts maintain the 1 Pair Series Connection configuration, SOT-23-3 package, and identical forward voltage characteristics. The higher voltage rating (100 V vs. 70 V) and increased current capacity (215 mA vs. 200 mA) provide enhanced performance margins. Extended lower temperature limit (-65°C vs. -55°C) supports broader operating conditions.

Q: What is the difference between SBAV99LT1G and BAV99LT1G?

A: Both parts share identical electrical specifications (100 V, 215 mA, 1.25 V @ 150 mA, 6 ns trr). SBAV99LT1G carries AEC-Q101 automotive qualification and is supplied in Cut Tape (CT) & Digi-Reel® packaging. BAV99LT1G is ROHS3 compliant with higher inventory availability (1,004,400 pcs vs. 455,400 pcs). Selection depends on automotive qualification requirements and packaging preferences.

Q: Are the Diodes Incorporated BAV199Q-13-F and BAV199Q-7-F suitable replacements?

A: These parts are electrically compatible in terms of package and configuration but have reduced current capacity (140 mA vs. 200 mA). They are suitable only if circuit analysis confirms that 140 mA average rectified current is sufficient for the application. Both parts offer extended temperature range (-65°C to 150°C) and AEC-Q101 automotive qualification.

Q: Why do some substitutes have lower current ratings than the original BAV99?

A: BAV199Q-13-F and BAV199Q-7-F are rated for 140 mA average rectified current, which is below the original 200 mA specification. These parts are included as alternatives for applications with lower current requirements or where the reduced current rating is acceptable after circuit evaluation. Higher-current alternatives such as BAV99-13-F (300 mA) are available if increased current capacity is needed.

Q: What is the significance of the reverse recovery time (trr) differences?

A: Reverse recovery time affects switching speed and switching losses. The original BAV99 specifies 6 ns trr. Substitutes with faster recovery (4 ns for BAV99-TP-HF and BAV99-13-F) reduce switching losses and improve high-frequency performance. Slower recovery times (1.5 µs for Infineon parts, 3 µs for Diodes Incorporated parts) indicate different speed classifications but remain compatible for general-purpose rectification applications.

Q: Are all substitute parts ROHS3 compliant?

A: ROHS3 compliance is confirmed for onsemi SBAV99LT1G, BAV99LT1G, and BAV99LT3G; Infineon BAV199E6327HTSA1 and BAV199E6433HTMA1; and Diodes Incorporated BAV199Q-13-F, BAV199Q-7-F, and BAV99-13-F. Micro Commercial Co BAV99-TP-HF does not specify ROHS3 status in available documentation.

Q: Can the BAV99-13-F (Diodes Incorporated) be used in place of the original BAV99?

A: Yes. BAV99-13-F provides superior specifications with 75 V voltage rating, 300 mA current capacity (vs. 200 mA), extended temperature range (-65°C to 150°C), and Active product status. The 4 ns reverse recovery time matches the performance of other fast-recovery alternatives. This part is recommended for new designs or where increased current margin is beneficial.

Q: What packaging options are available for substitute parts?

A: All substitute parts maintain the SOT-23-3 (TO-236-3, SC-59) surface mount package, ensuring mechanical and electrical pin compatibility. Packaging formats vary: onsemi parts are supplied in Cut Tape (CT) & Digi-Reel®; Diodes Incorporated parts in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel®; Infineon parts in Cut Tape (CT); Micro Commercial Co in Bulk. Verify packaging availability with suppliers for production requirements.

Q: Are there any temperature range limitations when substituting the BAV99?

A: The original BAV99 operates from -55°C to 150°C. Most substitutes extend the lower temperature limit to -65°C, providing additional margin. Infineon BAV199E6327HTSA1 and BAV199E6433HTMA1 maintain the -55°C lower limit. All parts support the 150°C upper junction temperature. Applications requiring operation below -55°C are supported by onsemi (SBAV99LT1G, BAV99LT1G, BAV99LT3G) and Diodes Incorporated (BAV199Q-13-F, BAV199Q-7-F, BAV99-13-F) alternatives.

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