IRFL110 N-Channel MOSFET 100V 1.5A SOT-223 Equivalent & Substitute Parts

Part Overview

The IRFL110 is an N-Channel MOSFET manufactured by Vishay Siliconix, rated for 100V drain-to-source voltage with 1.5A continuous drain current in a surface mount SOT-223 package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The IRFL110 operates across a temperature range of -55°C to 150°C and dissipates up to 2W at ambient temperature or 3.1W at case temperature.

Substiute Parts

IRFL110

Vishay SiliconixIn Stock: 17828IRFL110 Datasheet

Current PartRFQ

BSP296NH6433XTMA1

Infineon TechnologiesIn Stock: 15504BSP296NH6433XTMA1 Datasheet

MFR RecommendedRFQ

ZVN4310GTA

Diodes IncorporatedIn Stock: 25778ZVN4310GTA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFL110 is determined by strict electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 100V
• FET Type: Must be N-Channel MOSFET (Metal Oxide technology)
• Gate-Source Voltage (Vgs Max): Must support ±20V operation
• Operating Temperature Range: Must span -55°C to 150°C (TJ)
• Continuous Drain Current (Id): Must support minimum 1.5A at 25°C

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount only
• Package / Case: Must be TO-261-4 or TO-261AA (SOT-223 family)
• Moisture Sensitivity Level: Must be MSL 1 or equivalent

Thermal and Performance Criteria:

• Power Dissipation: Substitute must support thermal requirements of the application
• Rds On characteristics: Must be compatible with switching and conduction loss requirements
• Gate Charge and Input Capacitance: Must not introduce incompatible switching behavior

Both substitute parts listed (BSP296NH6433XTMA1 and ZVN4310GTA) meet all electrical and mechanical compatibility requirements and are available in active product status with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

BSP296NH6433XTMA1 (Infineon Technologies OptiMOS™ Series)

The BSP296NH6433XTMA1 is an active product with ROHS3 compliance and Infineon's OptiMOS™ technology platform. This device meets all electrical and mechanical compatibility requirements with the IRFL110. The continuous drain current rating of 1.2A at ambient temperature is lower than the IRFL110's 1.5A rating; however, the device operates within the same voltage class (100V Vdss) and package footprint. The gate threshold voltage of 1.8V is lower than the IRFL110's 4V specification, resulting in faster switching response. Gate charge is reduced to 6.7 nC, and input capacitance is lower at 152.7 pF, both favorable for switching efficiency. Power dissipation is rated at 1.8W at ambient temperature. This substitute is suitable for applications where the lower current rating does not exceed design requirements and where RoHS3 compliance is mandated.

ZVN4310GTA (Diodes Incorporated)

The ZVN4310GTA is an active product with ROHS3 compliance manufactured by Diodes Incorporated. This device exceeds the IRFL110's continuous drain current specification at 1.67A, providing margin above the original 1.5A rating. The 100V Vdss rating and SOT-223 package are identical to the IRFL110. The gate threshold voltage of 3V is lower than the IRFL110's 4V specification. Rds On at 10V is matched at 540 mOhm. Power dissipation is rated at 3W at ambient temperature, exceeding the IRFL110's 2W specification and providing thermal margin. Input capacitance is higher at 350 pF, which may affect switching speed in high-frequency applications. This substitute is suitable for applications requiring higher current capacity and improved thermal performance.

Product Status and Compliance Considerations

Both substitute parts are classified as active products with current manufacturing support, addressing the obsolescence status of the IRFL110. Both substitutes are ROHS3 compliant, meeting modern environmental and regulatory requirements. The IRFL110 is RoHS non-compliant, making transition to either substitute necessary for new designs or production runs subject to RoHS directives.

Frequently Asked Questions (FAQ)

Q: Can the BSP296NH6433XTMA1 directly replace the IRFL110 in all applications?

A: The BSP296NH6433XTMA1 is electrically and mechanically compatible with the IRFL110 across all specified parameters. However, the continuous drain current rating is 1.2A compared to the IRFL110's 1.5A. Applications operating at or near 1.5A continuous current must be evaluated to confirm the lower rating does not exceed design margins. All other electrical characteristics, including voltage ratings, temperature range, and package footprint, are compatible.

Q: What are the key differences between the two substitute parts?

A: The primary differences are continuous drain current and power dissipation. The ZVN4310GTA provides 1.67A continuous current and 3W power dissipation, exceeding the IRFL110's ratings. The BSP296NH6433XTMA1 provides 1.2A continuous current and 1.8W power dissipation, below the IRFL110's ratings. Input capacitance differs significantly: ZVN4310GTA at 350 pF versus BSP296NH6433XTMA1 at 152.7 pF. Gate threshold voltage is lower in both substitutes (1.8V and 3V respectively) compared to the IRFL110's 4V, resulting in faster switching response.

Q: Are both substitute parts available in the same package as the IRFL110?

A: Yes. Both the BSP296NH6433XTMA1 and ZVN4310GTA are available in TO-261-4 and TO-261AA packages, which are SOT-223 variants. PCB footprints are identical, allowing direct physical replacement without layout modifications.

Q: Which substitute should be selected for high-frequency switching applications?

A: The BSP296NH6433XTMA1 is preferable for high-frequency applications due to lower gate charge (6.7 nC) and lower input capacitance (152.7 pF), both of which reduce switching losses and improve efficiency at elevated switching frequencies. The ZVN4310GTA's higher input capacitance (350 pF) may increase switching losses in high-frequency circuits.

Q: Which substitute should be selected for applications requiring maximum current capacity?

A: The ZVN4310GTA is suitable for applications requiring higher current capacity, with a continuous drain current rating of 1.67A compared to the IRFL110's 1.5A. This device also provides superior thermal performance with 3W power dissipation rating.

Q: Are there any RoHS compliance differences between the substitutes?

A: Both substitute parts are ROHS3 compliant. The IRFL110 is RoHS non-compliant. For applications or markets requiring RoHS compliance, either substitute part satisfies regulatory requirements.

Q: What is the impact of lower gate threshold voltage in the substitute parts?

A: Both substitutes have lower gate threshold voltages (1.8V for BSP296NH6433XTMA1 and 3V for ZVN4310GTA) compared to the IRFL110's 4V. This results in faster turn-on response and reduced gate drive requirements. Applications using fixed gate drive voltage levels must verify that the lower threshold voltage does not cause unintended switching behavior or increased leakage current.

Q: Can the IRFL110 be used interchangeably with these substitutes in existing designs?

A: The IRFL110 is obsolete and no longer in active production. New designs should transition to either the BSP296NH6433XTMA1 or ZVN4310GTA. Existing designs using the IRFL110 can be updated to either substitute, provided the specific current and thermal requirements of the application are verified against each substitute's ratings.