IRLR9343TRLPBF Equivalent & Substitute Parts

Part Overview

The IRLR9343TRLPBF is a P-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage and 20A continuous drain current in a surface mount TO-252AA (DPAK) package. This device is part of the HEXFET® series and is designed for applications requiring P-channel switching and linear regulation in compact form factors.

The IRLR9343TRLPBF is discontinued at DiGi Electronics. Equivalent substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and ongoing system support.

Substiute Parts

IRLR9343TRLPBF

Infineon TechnologiesIn Stock: 970IRLR9343TRLPBF Datasheet

Current PartRFQ

DMP6180SK3-13

Diodes IncorporatedIn Stock: 31245DMP6180SK3-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRLR9343TRLPBF is determined by the following critical parameters:

Channel Type & Polarity: The substitute must be a P-Channel MOSFET to maintain circuit functionality.

Voltage Rating (Vdss): The substitute must have a Vdss rating equal to or greater than 55V to ensure safe operation across the intended voltage range.

Current Rating (Id): The substitute must support continuous drain current equal to or greater than 20A at 25°C to handle the design load requirements.

On-Resistance (Rds On): The substitute must maintain comparable or lower on-resistance to ensure thermal performance and power efficiency remain within acceptable limits.

Gate Threshold Voltage (Vgs(th)): The substitute must have a gate threshold voltage compatible with the drive circuitry, typically within the range of 1V to 2.7V.

Package Compatibility: The substitute must use the TO-252-3 (DPAK) surface mount package to ensure mechanical and thermal compatibility with existing PCB layouts.

Compliance & Certifications: The substitute must maintain RoHS3 compliance and MSL 1 rating to meet regulatory and manufacturing requirements.

The DMP6180SK3-13 from Diodes Incorporated meets these substitution criteria with a 60V Vdss rating, 14A continuous drain current, compatible on-resistance characteristics, and identical TO-252-3 package configuration.

Parameter Comparison

Engineering Selection Recommendations

Availability & Product Status: The IRLR9343TRLPBF is discontinued at DiGi Electronics, making the DMP6180SK3-13 the primary substitute for ongoing procurement. The DMP6180SK3-13 maintains active product status with 31,178 pieces in stock, ensuring reliable supply chain continuity.

Voltage Margin: The DMP6180SK3-13 provides a 5V higher Vdss rating (60V vs. 55V), offering additional voltage margin for circuit protection without compromising performance.

Current Derating Consideration: The DMP6180SK3-13 is rated for 14A continuous drain current compared to the original 20A rating. Applications operating at or near the 20A limit require thermal analysis to confirm the substitute can dissipate the required power within acceptable junction temperature limits.

On-Resistance Compatibility: Both devices exhibit comparable on-resistance characteristics (105 mOhm vs. 110 mOhm), ensuring similar conduction losses and thermal behavior in switching applications.

Gate Drive Compatibility: The DMP6180SK3-13 has a higher gate threshold voltage (2.7V vs. 1V), requiring verification that the gate drive circuit can reliably switch the device across the intended operating temperature range.

Regulatory Compliance: Both devices maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, satisfying regulatory and manufacturing requirements without modification.

Package Compatibility: Both devices use the TO-252-3 (DPAK) surface mount package, ensuring direct mechanical and thermal compatibility with existing PCB layouts and thermal management solutions.

Frequently Asked Questions (FAQ)

Q: Can the DMP6180SK3-13 directly replace the IRLR9343TRLPBF in all applications?

A: Direct replacement is possible in applications where continuous drain current does not exceed 14A. Applications requiring the full 20A rating of the original device require thermal analysis to confirm the substitute can operate within acceptable junction temperature limits. Both devices share identical package geometry and gate voltage compatibility, enabling direct PCB substitution.

Q: What is the significance of the higher Vdss rating on the DMP6180SK3-13?

A: The 60V Vdss rating on the DMP6180SK3-13 compared to 55V on the IRLR9343TRLPBF provides additional voltage margin. This allows the substitute to operate safely in circuits with transient overvoltage conditions or higher nominal supply voltages without exceeding the device rating.

Q: How does the gate threshold voltage difference affect circuit operation?

A: The DMP6180SK3-13 has a gate threshold voltage of 2.7V compared to 1V on the IRLR9343TRLPBF. Gate drive circuits must supply sufficient voltage to reliably turn the device on and off across the operating temperature range. Verification of gate drive voltage and current capability is required to ensure proper switching performance.

Q: Are there thermal management differences between these devices?

A: The IRLR9343TRLPBF is rated for 79W power dissipation at the case temperature, while the DMP6180SK3-13 is rated for 1.7W at ambient temperature. These different rating conditions reflect different thermal measurement standards. Thermal analysis based on actual circuit conditions and PCB layout is required to confirm the substitute meets thermal requirements.

Q: Do both devices require the same PCB layout and thermal management?

A: Both devices use the TO-252-3 (DPAK) package, enabling direct PCB substitution without layout modification. However, thermal management requirements depend on actual power dissipation in the application. Applications operating at high current levels may require thermal analysis to confirm adequate heat dissipation through the existing PCB thermal design.

Q: What compliance certifications apply to the DMP6180SK3-13?

A: The DMP6180SK3-13 maintains ROHS3 compliance, MSL 1 (unlimited moisture sensitivity), REACH unaffected status, and EAR99 export classification, matching the regulatory profile of the original IRLR9343TRLPBF.

Q: Is the DMP6180SK3-13 available in the same packaging format?

A: Yes. The DMP6180SK3-13 is supplied in Tape & Reel (TR) format in the TO-252-3 (DPAK) package, matching the surface mount configuration of the original device. This enables direct integration into existing manufacturing processes and PCB assembly workflows.