BAV199LT1 Equivalent & Substitute Parts

Part Overview

The BAV199LT1 is a general-purpose diode array in a 1 Pair Series Connection configuration, rated for 70 V DC reverse voltage and 215 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 package and is classified as obsolete. The BAV199LT1 is no longer in active production, necessitating identification of equivalent and substitute parts for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with allowable parameter variations within engineering tolerances.

Substiute Parts

BAV199LT1

onsemiIn Stock: 1584BAV199LT1 Datasheet

Current PartRFQ

BAV199LT1G

onsemiIn Stock: 605336BAV199LT1G Datasheet

DirectRFQ

BAS70-04FILM

STMicroelectronicsIn Stock: 59284BAS70-04FILM Datasheet

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BAV199-TP

Micro Commercial CoIn Stock: 19652BAV199-TP Datasheet

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BAV199E6327HTSA1

Infineon TechnologiesIn Stock: 35162BAV199E6327HTSA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAV199LT1 is determined by the following critical parameters: diode configuration (1 Pair Series Connection), package type (SOT-23-3 surface mount), voltage rating (DC reverse voltage), current rating (average rectified current per diode), forward voltage characteristics, and recovery time specifications. Parts are grouped into two categories:

Direct Equivalents maintain all electrical specifications and technology type (Standard recovery diodes) with identical or superior compliance status. These parts are pin-compatible and functionally interchangeable without circuit modification.

Functional Substitutes provide the same diode configuration and package but may vary in one or more electrical parameters such as voltage rating, current rating, forward voltage, or recovery time characteristics. Functional substitutes are selected when the application circuit can tolerate parameter variations while maintaining system performance.

The BAV199LT1 operates with Standard recovery technology (>500 ns recovery time at >200 mA). Substitutes using Schottky technology or significantly different recovery characteristics are classified as functional alternatives requiring application-level verification of switching behavior and thermal performance.

Parameter Comparison

Engineering Selection Recommendations

BAV199LT1G (onsemi) is the primary direct equivalent for the obsolete BAV199LT1. This part maintains identical electrical specifications including 70 V reverse voltage, 215 mA average rectified current, 1.25 V forward voltage at 150 mA, and 3 µs reverse recovery time. The BAV199LT1G is in active production status with ROHS3 compliance, addressing the obsolescence of the original part. Inventory availability is substantial at 605,300 pieces. This part is recommended as the first-choice replacement for direct substitution in existing designs.

BAV199-TP (Micro Commercial Co) provides equivalent electrical performance with identical voltage and current ratings, forward voltage characteristics, and recovery time specifications. Operating temperature range is -55 to 150 °C, providing a narrower lower temperature bound compared to the BAV199LT1 (-65 to 150 °C). This part is in active production with ROHS3 compliance and 19,613 pieces in inventory. Selection of BAV199-TP is appropriate when the application operating temperature does not require operation below -55 °C.

BAV199E6327HTSA1 (Infineon Technologies) is classified as Last Time Buy status, indicating limited future availability. This part provides a higher voltage rating (80 V versus 70 V) and slightly lower current rating (200 mA versus 215 mA). Reverse recovery time is faster at 1.5 µs compared to 3 µs. This part is suitable for applications requiring higher voltage margin but should not be selected for new designs due to Last Time Buy status and limited long-term availability.

BAS70-04FILM (STMicroelectronics) uses Schottky diode technology rather than Standard recovery technology. This part is rated for 70 mA average rectified current, significantly lower than the BAV199LT1 rating of 215 mA. Forward voltage is lower at 1 V at 15 mA, and reverse leakage is substantially higher at 10 µA at 70 V. The BAS70-04FILM is suitable only for applications with current requirements not exceeding 70 mA and where Schottky characteristics (lower forward voltage, higher leakage) are acceptable. This part is not recommended as a general substitute for the BAV199LT1 in high-current applications.

Frequently Asked Questions (FAQ)

Q: Can BAV199LT1G be used as a direct replacement for BAV199LT1?

A: Yes. The BAV199LT1G maintains identical electrical specifications including voltage rating (70 V), current rating (215 mA), forward voltage (1.25 V @ 150 mA), and recovery time (3 µs). Both parts use Standard recovery diode technology and are packaged in SOT-23-3. The BAV199LT1G is in active production with ROHS3 compliance, making it the recommended replacement for the obsolete BAV199LT1.

Q: What is the difference between BAV199-TP and BAV199LT1?

A: The BAV199-TP and BAV199LT1 are electrically equivalent with identical voltage, current, and forward voltage specifications. The primary difference is operating temperature range: BAV199-TP operates from -55 to 150 °C while BAV199LT1 operates from -65 to 150 °C. If the application requires operation below -55 °C, BAV199LT1G is the appropriate choice. For applications with minimum operating temperature at or above -55 °C, BAV199-TP is functionally equivalent.

Q: Why is BAS70-04FILM not suitable as a substitute for BAV199LT1?

A: The BAS70-04FILM is a Schottky diode array rated for only 70 mA average rectified current, compared to the BAV199LT1 rating of 215 mA. Using BAS70-04FILM in a circuit designed for 215 mA operation would result in diode overheating and failure. Additionally, Schottky technology exhibits higher reverse leakage current (10 µA versus 5 nA), which may affect circuit performance in sensitive applications. BAS70-04FILM is suitable only for low-current applications not exceeding 70 mA.

Q: Is BAV199E6327HTSA1 recommended for new designs?

A: No. While BAV199E6327HTSA1 provides equivalent electrical performance with a higher voltage rating (80 V), this part is classified as Last Time Buy status, indicating limited future availability. New designs should use BAV199LT1G or BAV199-TP, both of which are in active production with long-term availability.

Q: Are all substitute parts pin-compatible with BAV199LT1?

A: Yes. All listed substitute parts use the SOT-23-3 (TO-236-3, SC-59) package with identical pinout. Pin-level compatibility is maintained across all substitutes, allowing direct PCB placement without modification.

Q: What compliance certifications apply to substitute parts?

A: BAV199LT1G, BAV199-TP, BAV199E6327HTSA1, and BAS70-04FILM are all ROHS3 compliant. All parts have REACH Unaffected status and are classified under ECCN EAR99. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no special moisture handling requirements.

Q: Can BAV199LT1 be used in applications requiring 80 V rating?

A: No. The BAV199LT1 is rated for 70 V maximum DC reverse voltage. Applications requiring 80 V rating must use BAV199E6327HTSA1 or equivalent parts with higher voltage specifications. Using BAV199LT1 in an 80 V application would exceed the device rating and result in failure.