IRFU110 Equivalent & Substitute Parts

Part Overview

The IRFU110 is an N-Channel MOSFET manufactured by Vishay Siliconix, rated for 100V drain-to-source voltage with a continuous drain current of 4.3A at 25°C. The device is housed in a TO-251AA package and is designed for through-hole mounting applications requiring moderate power dissipation up to 25W.

The IRFU110 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

IRFU110

Vishay SiliconixIn Stock: 3819IRFU110 Datasheet

Current PartRFQ

IRFU110PBF

Vishay SiliconixIn Stock: 29734IRFU110PBF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFU110 is determined by electrical and mechanical parameter equivalence. The following criteria establish valid substitution:

Electrical Parameters (Critical):

• Drain to Source Voltage (Vdss): 100V
• Continuous Drain Current (Id) @ 25°C: 4.3A (Tc)
• Drive Voltage (Max Rds On): 10V
• Rds On (Max) @ Id, Vgs: 540mOhm @ 900mA, 10V
• Vgs(th) (Max) @ Id: 4V @ 250µA
• Gate Charge (Qg) (Max) @ Vgs: 8.3nC @ 10V
• Vgs (Max): ±20V
• Input Capacitance (Ciss) (Max) @ Vds: 180pF @ 25V
• Power Dissipation (Max): 25W (Tc)
• Operating Temperature Range: -55°C to 150°C (TJ)

Mechanical Parameters (Critical):

• Package / Case: TO-251-3 Short Leads, IPak, TO-251AA
• Mounting Type: Through Hole

Substitute parts must match all electrical specifications and maintain identical package and mounting characteristics to ensure direct replacement without circuit redesign or PCB modification.

Parameter Comparison

Engineering Selection Recommendations

IRFU110PBF is the direct parametric equivalent and substitute for the IRFU110. All electrical and mechanical specifications are identical, ensuring functional interchangeability in circuit applications.

Product Status Consideration: The IRFU110 is classified as obsolete, while the IRFU110PBF maintains active product status. Selection of the IRFU110PBF is appropriate for new designs, production continuity, and long-term supply chain stability.

Compliance Consideration: The IRFU110PBF is ROHS3 compliant and REACH affected, whereas the original IRFU110 is RoHS non-compliant and REACH unaffected. For applications subject to regulatory compliance requirements, the IRFU110PBF satisfies current environmental and hazardous substance directives.

Packaging Consideration: The IRFU110PBF is supplied in tube packaging, whereas the original IRFU110 packaging format is not specified. Both devices utilize the identical TO-251AA package and through-hole mounting configuration, ensuring PCB compatibility without modification.

Frequently Asked Questions (FAQ)

Q: Can the IRFU110PBF directly replace the IRFU110 in existing designs?

A: Yes. The IRFU110PBF is a parametric equivalent with identical electrical specifications (Vdss, Id, Rds On, Vgs(th), Qg, Ciss, power dissipation, and operating temperature range) and identical package configuration (TO-251AA, through-hole). Direct substitution is supported without circuit redesign or PCB modification.

Q: What is the primary difference between the IRFU110 and IRFU110PBF?

A: The IRFU110 is obsolete with RoHS non-compliant status, while the IRFU110PBF is an active product with ROHS3 compliance. All electrical and mechanical parameters are identical. The IRFU110PBF is supplied in tube packaging.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both devices share identical thermal characteristics (25W maximum power dissipation, -55°C to 150°C operating range) and electrical performance parameters. Performance in circuit applications is equivalent.

Q: Is the TO-251AA package compatible with existing PCB designs for the IRFU110?

A: Yes. Both the IRFU110 and IRFU110PBF utilize the TO-251-3 Short Leads, IPak, TO-251AA package with through-hole mounting. PCB footprints and mounting requirements are identical.

Q: Does the IRFU110PBF meet current regulatory compliance standards?

A: Yes. The IRFU110PBF is ROHS3 compliant and REACH affected, satisfying current environmental and hazardous substance regulations. The original IRFU110 is RoHS non-compliant and REACH unaffected.

Q: What is the gate charge specification, and does it differ between these parts?

A: Gate charge (Qg) is specified as 8.3nC at 10V for both the IRFU110 and IRFU110PBF. This parameter is identical and affects switching speed and drive circuit requirements equally for both devices.

Q: Are there any supply chain advantages to selecting the IRFU110PBF?

A: Yes. The IRFU110PBF maintains active product status with significantly higher inventory availability (29,699 pieces in stock versus 3,720 pieces for the obsolete IRFU110). Active status ensures continued manufacturing and supply chain support.