IRLR7833PBF N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRLR7833PBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage with 140A continuous drain current at 25°C. This device is housed in a Surface Mount TO-252AA (DPAK) package and is part of the HEXFET® series. The part is currently discontinued at DiGi Electronics, making equivalent substitute components 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	140	A (Tc)
On-Resistance (Rds On Max) @ Id, Vgs	4.5 mOhm @ 15A, 10V	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ Id	2.3	V @ 250µA
Gate Charge (Qg Max) @ Vgs	50	nC @ 4.5V
Input Capacitance (Ciss Max) @ Vds	4010	pF @ 15V
Power Dissipation (Max)	140	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252-3 (DPAK)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution of the IRLR7833PBF is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Drain-to-Source Voltage (Vdss): Must equal 30V
FET Type: Must be N-Channel
Technology: Must be MOSFET (Metal Oxide)
Package: Must be TO-252-3 (DPAK) Surface Mount
Operating Temperature Range: Must support -55°C to 175°C (TJ)

Performance Parameters for Functional Equivalence:

Continuous Drain Current (Id): Substitute must meet or exceed 140A (Tc)
On-Resistance (Rds On): Substitute must not exceed 4.5 mOhm @ specified conditions
Gate Charge (Qg): Lower values indicate faster switching
Input Capacitance (Ciss): Lower values reduce gate drive requirements

The AOD514 is identified as a manufacturer-recommended substitute. However, the AOD514 exhibits significantly reduced continuous drain current (46A Tc versus 140A Tc) and lower power dissipation (50W Tc versus 140W Tc), indicating it is suitable only for applications with reduced current requirements within the same voltage class and package footprint.

Parameter Comparison

Parameter	IRLR7833PBF (Main)	AOD514 (Substitute)	Unit
Manufacturer	Infineon Technologies	Alpha & Omega Semiconductor Inc.
Drain to Source Voltage (Vdss)	30	30	V
Continuous Drain Current (Id) @ 25°C	140 (Tc)	46 (Tc)	A
On-Resistance (Rds On Max) @ Id, Vgs	4.5 @ 15A, 10V	6.5 @ 20A, 10V	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ Id	2.3 @ 250µA	2.6 @ 250µA	V
Gate Charge (Qg Max) @ Vgs	50 @ 4.5V	22.5 @ 10V	nC
Input Capacitance (Ciss Max) @ Vds	4010 @ 15V	951 @ 15V	pF
Power Dissipation (Max)	140 (Tc)	50 (Tc)	W
Operating Temperature Range	-55 to 175	-55 to 175	°C (TJ)
Package Type	TO-252-3 (DPAK)	TO-252-3 (DPAK)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Same Current Rating):

The AOD514 is not suitable as a direct replacement for the IRLR7833PBF in applications requiring the full 140A continuous drain current specification. The AOD514 is rated for only 46A (Tc), representing a 67% reduction in current-handling capacity.

For Reduced Current Applications:

The AOD514 may be selected for applications where the circuit design operates at or below 46A continuous drain current. Both devices share identical voltage ratings (30V Vdss), identical operating temperature range (-55°C to 175°C TJ), and identical package footprint (TO-252-3 DPAK). Both devices are RoHS3 compliant and REACH unaffected.

Compliance Considerations:

Both the IRLR7833PBF and AOD514 meet RoHS3 compliance requirements and carry REACH unaffected status. The IRLR7833PBF is discontinued at DiGi Electronics; the AOD514 carries "Not For New Designs" status, indicating both parts have limited long-term availability for new product development.

Frequently Asked Questions (FAQ)

Q: Can the AOD514 replace the IRLR7833PBF in all applications?

A: No. The AOD514 is rated for 46A continuous drain current (Tc) compared to the IRLR7833PBF's 140A rating. Substitution is only valid for applications operating at or below 46A. Exceeding this current rating will cause thermal stress and device failure.

Q: Are the packages physically identical?

A: Yes. Both devices use the TO-252-3 (DPAK) Surface Mount package with identical pin configuration and footprint. PCB layout compatibility is maintained.

Q: What is the difference in on-resistance between these devices?

A: The IRLR7833PBF has 4.5 mOhm Rds On (Max) @ 15A, 10V. The AOD514 has 6.5 mOhm Rds On (Max) @ 20A, 10V. The AOD514's higher on-resistance will result in increased power dissipation at equivalent current levels.

Q: Do both devices support the same voltage range?

A: Yes. Both devices are rated for 30V drain-to-source voltage (Vdss) and support the same operating temperature range of -55°C to 175°C (TJ).

Q: What is the gate charge difference, and does it matter?

A: The IRLR7833PBF has 50 nC gate charge @ 4.5V; the AOD514 has 22.5 nC @ 10V. Lower gate charge reduces gate drive power requirements and enables faster switching transitions. The AOD514's lower gate charge may reduce driver circuit stress in high-frequency applications.

Q: Are there compliance or regulatory differences?

A: Both devices are RoHS3 compliant and REACH unaffected. No regulatory differences exist between the two parts.

Q: What is the significance of "Not For New Designs" status on the AOD514?

A: This status indicates the manufacturer does not recommend the AOD514 for new product development. Long-term availability and supply continuity are not guaranteed. The IRLR7833PBF is discontinued at DiGi Electronics, making both parts unsuitable for new designs requiring long-term support.

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