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 Taiwan Semiconductor Corporation, this component is housed in a SOT-23-3 (TO-236-3, SC-59) surface mount package and is classified as Active product status. The BAV99 serves applications requiring compact, dual-diode solutions with small signal switching characteristics and fast reverse recovery performance. Equivalent and substitute parts are identified based on matching or exceeding electrical specifications within the same or compatible package families, ensuring functional interchangeability in circuit designs.

Key Parameters

Parameter	Value	Unit
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 @ 150	V @ mA
Reverse Recovery Time (trr)	6	ns
Current - Reverse Leakage @ Vr	2.5 @ 70	µA @ V
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

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

Diode Configuration: Must be 1 Pair Series Connection to maintain circuit topology compatibility
Voltage - DC Reverse (Vr) (Max): Minimum 70 V; higher ratings are acceptable
Current - Average Rectified (Io) (per Diode): Minimum 200 mA; higher ratings are acceptable
Voltage - Forward (Vf) (Max) @ If: Must not exceed 1.25 V @ 150 mA
Operating Temperature - Junction: Must span at least -55°C to 150°C
Package / Case: Must be SOT-23-3 (TO-236-3, SC-59) for direct pin-compatible substitution
Mounting Type: Must be Surface Mount
RoHS Status: Must be ROHS3 Compliant

Parts meeting these criteria are electrically and mechanically interchangeable with the BAV99. Parts with different diode configurations (such as 2 Pair Series Connection) or different package types (such as SOT-363) are not direct substitutes and require circuit redesign.

Parameter Comparison

Parameter	BAV99 (TSC)	BAV199-TP (MCC)	BAV99_R1_00001 (Panjit)	SBAV199LT1G (onsemi)
Manufacturer	Taiwan Semiconductor Corporation	Micro Commercial Co	Panjit International Inc.	onsemi
Diode Configuration	1 Pair Series Connection	1 Pair Series Connection	1 Pair Series Connection	1 Pair Series Connection
Voltage - DC Reverse (Vr) (Max)	70 V	70 V	75 V	70 V
Current - Average Rectified (Io) (per Diode)	200 mA	215 mA	150 mA	215 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA	1.25 V @ 150 mA	1.25 V @ 150 mA	1.25 V @ 150 mA
Reverse Recovery Time (trr)	6 ns	3 µs	4 ns	3 µs
Current - Reverse Leakage @ Vr	2.5 µA @ 70 V	5 nA @ 75 V	2.5 µA @ 75 V	5 nA @ 70 V
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C	-65°C to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

BAV199-TP (Micro Commercial Co): This part is electrically and mechanically compatible with the BAV99. It maintains the same 70 V reverse voltage rating and SOT-23-3 package, with a higher current rating of 215 mA. The reverse recovery time of 3 µs is longer than the BAV99, indicating standard recovery speed characteristics. This part is suitable for applications where the increased current capacity is beneficial and switching speed requirements do not mandate small signal performance. Product status is Active with ROHS3 compliance.

BAV99_R1_00001 (Panjit International Inc.): This part shares the same diode configuration and package as the BAV99 but operates at a higher reverse voltage rating of 75 V. The current rating is reduced to 150 mA, which is below the BAV99 specification. This part is not recommended as a direct substitute due to insufficient current capacity. Product status is Active with ROHS3 compliance.

SBAV199LT1G (onsemi): This part is electrically and mechanically compatible with the BAV99. It maintains the same 70 V reverse voltage rating and SOT-23-3 package, with a higher current rating of 215 mA. The reverse recovery time of 3 µs indicates standard recovery speed characteristics. The operating temperature range extends to -65°C, providing enhanced low-temperature performance. This part is suitable for applications requiring increased current capacity and extended temperature range. Product status is Active with ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

BAV99 (Diodes Incorporated): This part carries the same part number but differs significantly in configuration and package. It features a 2 Pair Series Connection in a SOT-363 package, which is not pin-compatible with the original BAV99. This part is not a direct substitute and requires circuit redesign. Product status is Last Time Buy, indicating discontinued production.

Frequently Asked Questions (FAQ)

Q: Can BAV199-TP be used as a direct replacement for BAV99?

A: Yes. BAV199-TP is pin-compatible and electrically compatible with the BAV99. Both parts feature 1 Pair Series Connection in SOT-23-3 packages with 70 V reverse voltage ratings and 1.25 V forward voltage specifications. The BAV199-TP offers higher current capacity (215 mA vs. 200 mA) and is suitable for direct substitution.

Q: What is the difference between small signal and standard recovery speed classifications?

A: Small signal classification (≤200 mA, any speed) applies to the BAV99 with a 6 ns reverse recovery time, indicating fast switching performance. Standard recovery (>500 ns, >200 mA) applies to BAV199-TP and SBAV199LT1G with 3 µs reverse recovery times, indicating slower switching but higher current capacity. Selection depends on circuit switching frequency requirements.

Q: Is BAV99_R1_00001 suitable for applications requiring 200 mA current?

A: No. BAV99_R1_00001 is rated for only 150 mA average rectified current, which is below the BAV99 specification of 200 mA. This part is not recommended for applications requiring the full 200 mA current capacity.

Q: Why is the BAV99 from Diodes Incorporated not listed as a substitute?

A: The BAV99 from Diodes Incorporated features a 2 Pair Series Connection in a SOT-363 package, whereas the original BAV99 has a 1 Pair Series Connection in a SOT-23-3 package. These are fundamentally different configurations with different pin assignments and circuit topologies. Additionally, this part is marked as Last Time Buy, indicating end-of-life status. Circuit redesign is required to use this alternative.

Q: Can SBAV199LT1G replace BAV99 in all applications?

A: SBAV199LT1G is pin-compatible and electrically compatible with the BAV99. Both parts feature 1 Pair Series Connection in SOT-23-3 packages with 70 V reverse voltage ratings. SBAV199LT1G offers higher current capacity (215 mA vs. 200 mA) and an extended low-temperature operating range (-65°C vs. -55°C). It is suitable for direct substitution in all BAV99 applications.

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

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions. These parts can be stored indefinitely without special moisture control measures and do not require baking before reflow soldering. This classification applies to BAV199-TP and SBAV199LT1G.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (BAV199-TP, BAV99_R1_00001, and SBAV199LT1G) are ROHS3 compliant, matching the compliance status of the original BAV99. All parts are also REACH Unaffected and classified under ECCN EAR99.

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