VEC2415-TL-E Equivalent & Substitute Parts

Part Overview

The VEC2415-TL-E is a dual N-channel MOSFET array manufactured by onsemi, rated for 60V drain-to-source voltage and 3A continuous drain current in a surface mount SOT-28FL/VEC8 package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs.

Substiute Parts

VEC2415-TL-E

onsemiIn Stock: 19059VEC2415-TL-E Datasheet

Current PartRFQ

QH8K51TR

Rohm SemiconductorIn Stock: 17806QH8K51TR Datasheet

MFR RecommendedRFQ

QS8K21TR

Rohm SemiconductorIn Stock: 9719QS8K21TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VEC2415-TL-E is determined by the following critical parameters:

Configuration Match: Both substitute parts maintain the dual N-channel MOSFET array configuration, ensuring functional equivalence in circuit topology.

Package Compatibility: The VEC2415-TL-E uses an 8-SMD, flat lead package (SOT-28FL/VEC8). Substitute parts QH8K51TR and QS8K21TR employ the TSMT8 package, which is also an 8-SMD, flat lead surface mount package with compatible pinout and footprint characteristics for direct board-level substitution.

Voltage and Current Ratings: Substitutes are selected based on application voltage and current requirements. The QH8K51TR provides higher voltage capability (100V Vdss) with reduced current (2A), suitable for higher-voltage applications. The QS8K21TR provides lower voltage (45V Vdss) with higher current capability (4A), suitable for higher-current applications at reduced voltage.

Thermal and Electrical Characteristics: All parts share the same maximum operating temperature (150°C TJ), MSL rating (1 - Unlimited), and surface mount technology. Gate threshold voltage (Vgs(th)) remains consistent across all parts at 2.5-2.6V @ 1mA, ensuring compatible gate drive requirements.

Product Status: The VEC2415-TL-E is obsolete. Both substitute parts (QH8K51TR and QS8K21TR) are active products, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

QH8K51TR Selection Criteria: This substitute is appropriate for applications where the original VEC2415-TL-E operates at or below 60V and current requirements do not exceed 2A. The higher voltage rating (100V Vdss) provides design margin for voltage transients. The active product status and ROHS3 compliance ensure regulatory compliance and supply chain availability. Higher on-resistance (325mOhm) may increase power dissipation in high-current applications.

QS8K21TR Selection Criteria: This substitute is appropriate for applications requiring current levels between 2A and 4A at voltages not exceeding 45V. The lower on-resistance (53mOhm) compared to the main part (80mOhm) reduces power dissipation and improves thermal performance. The active product status and ROHS3 compliance ensure long-term availability. The 45V voltage rating is suitable for applications operating below this threshold.

Compliance Considerations: Both substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The VEC2415-TL-E, as an obsolete part, may present supply chain and compliance challenges for new designs.

Frequently Asked Questions (FAQ)

Q: Can QH8K51TR directly replace VEC2415-TL-E in all applications?

A: Direct replacement is possible only in applications where the circuit operates at or below 60V and requires continuous drain current not exceeding 2A. The higher on-resistance of QH8K51TR (325mOhm vs. 80mOhm) will increase power dissipation. Thermal analysis is required to confirm acceptable junction temperature.

Q: Can QS8K21TR directly replace VEC2415-TL-E in all applications?

A: Direct replacement is possible only in applications where the circuit operates at or below 45V. The QS8K21TR supports higher current (4A) and has lower on-resistance (53mOhm), making it suitable for applications requiring these characteristics. Applications exceeding 45V Vdss require QH8K51TR or alternative parts.

Q: Are the package footprints identical between VEC2415-TL-E and the substitute parts?

A: The VEC2415-TL-E uses SOT-28FL/VEC8 packaging, while both substitutes use TSMT8 packaging. Both are 8-SMD, flat lead surface mount packages with compatible pinout and footprint characteristics. PCB layout verification is required to confirm mechanical compatibility.

Q: What is the impact of different gate charge specifications?

A: The VEC2415-TL-E specifies 10nC @ 10V, while QH8K51TR specifies 4.7nC @ 5V and QS8K21TR specifies 5.4nC @ 5V. Lower gate charge reduces gate drive power requirements and switching losses. Gate drive circuits must be verified for compatibility with the selected substitute.

Q: Are there compliance differences between the main part and substitutes?

A: The VEC2415-TL-E has no specified RoHS status. Both QH8K51TR and QS8K21TR are ROHS3 compliant. All three parts are REACH unaffected. For new designs, the ROHS3-compliant substitutes are preferred to meet current regulatory requirements.

Q: What is the significance of the different Vgs(th) specifications?

A: VEC2415-TL-E specifies 2.6V @ 1mA, while both substitutes specify 2.5V @ 1mA. This 0.1V difference is negligible for most gate drive circuits. Gate drive voltage must remain above the threshold to ensure full enhancement of the channel.

Q: How do input capacitance differences affect circuit performance?

A: VEC2415-TL-E specifies 505pF @ 20V, QH8K51TR specifies 290pF @ 25V, and QS8K21TR specifies 460pF @ 10V. Lower input capacitance reduces gate charge requirements and switching losses. Circuit simulation is recommended to evaluate switching performance with each substitute.