IRLR8113TRLPBF N-Channel 30V 94A MOSFET Equivalent & Substitute Parts

Part Overview

The IRLR8113TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage and 94A continuous drain current at 25°C. This device is packaged in TO-252-3 (DPAK) surface mount configuration and belongs to the HEXFET® series. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	94	A (Tc)
Rds On (Max) @ 15A, 10V	6	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2.25	V
Gate Charge (Qg) @ 4.5V	32	nC
Power Dissipation (Max)	89	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252-3 (DPAK)	Surface Mount
Vgs (Max)	±20	V

Substitute Part Grouping Explanation

Substitution of the IRLR8113TRLPBF is determined by the following critical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must be ≥30V
Continuous Drain Current (Id): Must be ≥94A at 25°C (Tc rating)
Package Type: Must be TO-252-3 (DPAK) surface mount
Gate Threshold Voltage (Vgs(th)): Must be compatible with 4.5V and 10V drive voltages
Maximum Gate Voltage (Vgs): Must support ±20V
Operating Temperature Range: Must support -55°C to 175°C minimum

Secondary Compatibility Parameters:

Rds On (on-state resistance): Lower values indicate improved performance
Gate Charge (Qg): Affects switching speed and drive circuit requirements
Power Dissipation: Thermal management capability

Substitute parts are grouped into two categories:

Category A - Direct Substitutes (Vdss ≥30V, Id ≥94A): Parts meeting or exceeding the current rating of 94A at 30V or higher voltage rating.

Category B - Functional Substitutes (Vdss ≥30V, Id <94A): Parts with reduced current ratings suitable for applications with lower current requirements or as design alternatives where thermal or space constraints exist.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Pd Max (W)	Status
IRLR8113TRLPBF	Infineon	30	94 (Tc)	6 @ 15A, 10V	2.25	32 @ 4.5V	89	Obsolete
STD86N3LH5	STMicroelectronics	30	80 (Tc)	5 @ 40A, 10V	2.5	14 @ 5V	70	Active
STD100N3LF3	STMicroelectronics	30	80 (Tc)	5.5 @ 40A, 10V	2.5	27 @ 5V	110	Obsolete
STD95N4F3	STMicroelectronics	40	80 (Tc)	6.5 @ 40A, 10V	4	54 @ 10V	110	Active
FDD6670A	onsemi	30	66 (Tc)	8 @ 15A, 10V	3	22 @ 5V	63	Last Time Buy
FDD8896	Fairchild Semiconductor	30	94 (Tc)	5.7 @ 35A, 10V	2.5	60 @ 10V	80	Active
IPD50N03S207ATMA1	Infineon	30	50 (Tc)	7.3 @ 50A, 10V	4	68 @ 10V	136	Active
DMG8880LK3-13	Diodes Incorporated	30	11 (Ta)	7.5 @ 11.6A, 10V	2.3	27.6 @ 10V	1.68	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Current Rating Match:

The FDD8896 (Fairchild Semiconductor) is the preferred substitute for the IRLR8113TRLPBF. This part maintains the 30V Vdss rating and matches the 94A continuous drain current specification. The FDD8896 is currently in active production status, ensuring long-term availability. The device features improved on-state resistance (5.7 mOhm vs. 6 mOhm) and lower power dissipation (80W vs. 89W), providing superior thermal performance. Both parts support identical gate voltage ranges (±20V) and operate across the full -55°C to 175°C temperature range. The TO-252 (DPAK) package is mechanically and electrically compatible.

Secondary Recommendation - Higher Current Capability:

The STD100N3LF3 (STMicroelectronics) provides 80A continuous drain current at 30V with superior on-state resistance (5.5 mOhm) and higher power dissipation capability (110W). Although this part is obsolete, it remains available in inventory. The STD86N3LH5 (STMicroelectronics) is an active alternative with 80A rating, lower on-state resistance (5 mOhm), and reduced gate charge (14 nC), making it suitable for applications prioritizing switching efficiency. The STD86N3LH5 carries AEC-Q101 automotive qualification.

Alternative for Reduced Current Applications:

The IPD50N03S207ATMA1 (Infineon OptiMOS™) is suitable for applications requiring 50A or less. This part is in active production with enhanced power dissipation (136W) and is available in high volume (47,600 pcs). The higher gate charge (68 nC) requires consideration in drive circuit design.

Not Recommended:

The DMG8880LK3-13 (Diodes Incorporated) is unsuitable as a direct substitute due to its significantly reduced current rating (11A Ta) and power dissipation (1.68W Ta). This part is appropriate only for low-current applications.

The STD95N4F3 (STMicroelectronics) operates at 40V Vdss, exceeding the 30V specification. While this provides voltage margin, it is not a direct equivalent and should be selected only when higher voltage rating is required by system design.

Frequently Asked Questions (FAQ)

Q1: Can the STD86N3LH5 replace the IRLR8113TRLPBF in all applications?

The STD86N3LH5 is suitable for applications where the continuous drain current requirement does not exceed 80A at 25°C. The reduced current rating (80A vs. 94A) must be verified against circuit requirements. The STD86N3LH5 features lower gate charge (14 nC vs. 32 nC), which improves switching performance and reduces drive circuit power consumption. Both parts maintain 30V Vdss rating and identical package configuration.

Q2: Why is the FDD8896 preferred over the STD100N3LF3?

The FDD8896 is in active production status, ensuring long-term availability and supply chain stability. The STD100N3LF3 is obsolete, presenting future procurement risk. Both parts match the 94A current specification and 30V voltage rating. The FDD8896 offers lower power dissipation (80W vs. 110W) and improved thermal efficiency.

Q3: What is the impact of different Rds On values on circuit performance?

On-state resistance (Rds On) directly affects power dissipation and heat generation. Lower Rds On values reduce conduction losses. The IRLR8113TRLPBF specifies 6 mOhm at 15A, 10V. The FDD8896 provides 5.7 mOhm at 35A, 10V, resulting in approximately 5% lower conduction losses. The STD86N3LH5 provides 5 mOhm at 40A, 10V, offering approximately 17% improvement. Selection depends on thermal budget and efficiency requirements.

Q4: Are all substitute parts compatible with the same PCB layout?

All recommended substitute parts use the TO-252-3 (DPAK) package with identical pin configuration and mechanical dimensions. PCB layout compatibility is maintained. However, thermal management design may require adjustment based on power dissipation differences. Parts with higher power dissipation (IPD50N03S207ATMA1 at 136W) may benefit from enhanced thermal vias or heat sinking.

Q5: What is the significance of gate charge (Qg) differences?

Gate charge affects the switching speed and drive circuit requirements. The IRLR8113TRLPBF specifies 32 nC at 4.5V. Lower gate charge (STD86N3LH5 at 14 nC) reduces switching losses and drive circuit power consumption, enabling faster switching frequencies. Higher gate charge (IPD50N03S207ATMA1 at 68 nC) requires stronger drive circuits but may provide improved noise immunity.

Q6: Can the STD95N4F3 be used as a substitute despite its 40V rating?

The STD95N4F3 operates at 40V Vdss, exceeding the 30V specification of the IRLR8113TRLPBF. While higher voltage rating provides design margin, this part is not a direct equivalent. Selection of the STD95N4F3 should be limited to applications where system voltage requirements justify the higher rating. The 80A current rating is also below the 94A specification.

Q7: What are the compliance and qualification differences between substitute parts?

The STD86N3LH5 carries AEC-Q101 automotive qualification, suitable for automotive applications. All parts listed maintain ROHS3 compliance and REACH unaffected status. The IRLR8113TRLPBF and most substitutes support -55°C to 175°C operating temperature range. Compliance requirements should be verified against specific application standards.

Q8: Is the IPD50N03S207ATMA1 suitable for high-current applications?

The IPD50N03S207ATMA1 is rated for 50A continuous drain current, which is below the 94A specification of the IRLR8113TRLPBF. This part is suitable only for applications with current requirements of 50A or less. The higher power dissipation rating (136W) does not compensate for the reduced current capability. This part is recommended for new designs with lower current requirements or as a secondary option when primary substitutes are unavailable.

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