BSP129L6906HTSA1 Equivalent & Substitute Parts

Part Overview

The BSP129L6906HTSA1 is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 240V drain-to-source voltage with 350mA continuous drain current at 25°C. This device is packaged in PG-SOT223-4-21 (TO-261-4, TO-261AA) surface mount configuration and is designed for depletion mode operation with a maximum power dissipation of 1.8W.

The BSP129L6906HTSA1 is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems utilizing this component.

Substiute Parts

BSP129L6906HTSA1

Infineon TechnologiesIn Stock: 758BSP129L6906HTSA1 Datasheet

Current PartRFQ

BSP129H6327XTSA1

Infineon TechnologiesIn Stock: 4193BSP129H6327XTSA1 Datasheet

Parametric EquivalentRFQ

ZVN4424GTA

Diodes IncorporatedIn Stock: 13170ZVN4424GTA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BSP129L6906HTSA1 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Primary Equivalence Criteria:

• Drain to Source Voltage (Vdss): 240V minimum
• Continuous Drain Current (Id): 350mA or greater at 25°C
• On-State Resistance (Rds On): 6 Ohm or lower at specified conditions
• Gate Threshold Voltage (Vgs(th)): 1V or lower at 108µA
• Gate Charge (Qg): 5.7nC or lower at 5V
• Input Capacitance (Ciss): 108pF or lower at 25V
• Power Dissipation: 1.8W or greater
• Operating Temperature Range: -55°C to 150°C minimum
• Mounting Type: Surface Mount
• Package Compatibility: TO-261-4 or TO-261AA footprint

Substitute Parts Identified:

BSP129H6327XTSA1 (Infineon Technologies) – Parametric Equivalent This part meets all electrical specifications identically to the main part and maintains the same package footprint. The primary distinction is product status (Active vs. Obsolete) and packaging format (Cut Tape & Digi-Reel vs. standard packaging).

ZVN4424GTA (Diodes Incorporated) – Manufacturer Recommended Substitute This part exceeds the minimum electrical requirements with higher continuous drain current (500mA vs. 350mA), lower on-state resistance (5.5 Ohm vs. 6 Ohm), and greater power dissipation capability (2.5W vs. 1.8W). It maintains voltage rating equivalence (240V) and compatible package footprint (TO-261-4, TO-261AA). Gate threshold voltage is higher (1.8V vs. 1V) and input capacitance is higher (200pF vs. 108pF), which may affect circuit performance in gate-drive-sensitive applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Obsolete Product Continuity):

The BSP129H6327XTSA1 is the primary equivalent substitute for the BSP129L6906HTSA1. This part maintains identical electrical specifications across all critical parameters and is compatible with existing PCB layouts and circuit designs. The BSP129H6327XTSA1 carries Active product status, ensuring long-term availability and supply chain stability. Both parts are REACH Unaffected and carry MSL 1 (Unlimited) moisture sensitivity classification. The BSP129H6327XTSA1 is ROHS3 Compliant, providing regulatory advantage over the obsolete main part.

For Performance-Enhanced Applications:

The ZVN4424GTA from Diodes Incorporated is a manufacturer-recommended substitute that provides enhanced electrical performance. This part delivers higher continuous drain current (500mA vs. 350mA), lower on-state resistance (5.5 Ohm vs. 6 Ohm), and greater power dissipation capability (2.5W vs. 1.8W). The ZVN4424GTA is suitable for applications requiring improved thermal performance or higher current handling. However, the higher gate threshold voltage (1.8V vs. 1V) and increased input capacitance (200pF vs. 108pF) may require circuit re-evaluation in gate-drive-sensitive or high-frequency switching applications.

Compliance and Regulatory Considerations:

Both substitute parts are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements. The BSP129H6327XTSA1 maintains identical compliance status to the main part. Both substitutes carry MSL 1 (Unlimited) moisture sensitivity classification, indicating no special moisture handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can the BSP129H6327XTSA1 be used as a direct drop-in replacement for the BSP129L6906HTSA1?

A: Yes. The BSP129H6327XTSA1 is electrically and mechanically equivalent to the BSP129L6906HTSA1. All critical electrical parameters are identical, including Vdss (240V), Id (350mA), Rds On (6 Ohm), Vgs(th) (1V), Qg (5.7nC), and Ciss (108pF). Both parts use the same TO-261-4/TO-261AA package footprint. No circuit modifications are required for substitution.

Q: What are the key differences between the BSP129H6327XTSA1 and ZVN4424GTA?

A: The BSP129H6327XTSA1 is an exact electrical equivalent manufactured by Infineon Technologies. The ZVN4424GTA is a Diodes Incorporated part with enhanced performance specifications: higher continuous drain current (500mA vs. 350mA), lower on-state resistance (5.5 Ohm vs. 6 Ohm), and greater power dissipation (2.5W vs. 1.8W). However, the ZVN4424GTA has a higher gate threshold voltage (1.8V vs. 1V) and higher input capacitance (200pF vs. 108pF). Both parts maintain 240V Vdss rating and compatible package footprints.

Q: Is the ZVN4424GTA suitable for all applications using the BSP129L6906HTSA1?

A: The ZVN4424GTA is suitable for most applications but requires circuit evaluation in gate-drive-sensitive designs. The higher gate threshold voltage (1.8V vs. 1V) may affect gate drive requirements and switching characteristics. The increased input capacitance (200pF vs. 108pF) may impact high-frequency switching performance. Applications with tight gate drive margins or operating at frequencies above 1MHz should be re-evaluated before substitution.

Q: Are there any packaging or supply chain differences between these parts?

A: The BSP129L6906HTSA1 is obsolete with limited remaining inventory (738 Pcs). The BSP129H6327XTSA1 is Active with significantly higher inventory availability (4100 Pcs) and is available in Cut Tape & Digi-Reel packaging. The ZVN4424GTA is Active with the highest inventory availability (13063 Pcs) and is also available in Cut Tape & Digi-Reel packaging. For new designs or long-term production, the BSP129H6327XTSA1 or ZVN4424GTA are recommended for supply chain reliability.

Q: Do these parts require different PCB layout or thermal management?

A: All three parts use identical TO-261-4/TO-261AA package footprints and require no PCB layout modifications for substitution. The ZVN4424GTA has higher power dissipation capability (2.5W vs. 1.8W), which may allow reduced thermal management requirements in power-limited applications. However, thermal design should be based on actual circuit operating conditions rather than maximum rated power dissipation.

Q: What is the significance of the depletion mode feature listed for the BSP129L6906HTSA1?

A: The depletion mode feature indicates the device conducts in the absence of gate drive voltage. This is a critical functional characteristic that must be preserved in substitution. Both the BSP129H6327XTSA1 and ZVN4424GTA are standard enhancement-mode MOSFETs. Verify that your circuit design does not depend on depletion mode operation before substituting with these parts. If depletion mode operation is required, alternative parts must be selected.

Q: Are moisture sensitivity or storage requirements different between these parts?

A: All three parts carry MSL 1 (Unlimited) moisture sensitivity classification, indicating no special moisture handling or baking requirements. Standard surface mount assembly processes are applicable to all parts without modification.