IRLR7833CTRLPBF N-Channel 30V 140A MOSFET Equivalent & Substitute Parts

Part Overview

The IRLR7833CTRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage with 140A continuous drain current in a surface mount TO-252AA (DPAK) package. This device is classified as obsolete product status. Due to its obsolete classification, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts must maintain electrical compatibility across voltage ratings, current handling capacity, and mechanical packaging specifications.

Substiute Parts

IRLR7833CTRLPBF

Infineon TechnologiesIn Stock: 827IRLR7833CTRLPBF Datasheet

Current PartRFQ

IRLR8743TRPBF

Infineon TechnologiesIn Stock: 55184IRLR8743TRPBF Datasheet

DirectRFQ

AOD4132

Alpha & Omega Semiconductor Inc.In Stock: 250372AOD4132 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IRLR7833CTRLPBF are selected based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Primary Compatibility Criteria:

• Drain to Source Voltage (Vdss): Must equal or exceed 30V
• FET Type: Must be N-Channel
• Technology: Must be MOSFET (Metal Oxide)
• Package / Case: Must be TO-252-3, DPAK (2 Leads + Tab), SC-63
• Mounting Type: Must be Surface Mount
• Vgs (Max): Must be ±20V or greater
• Moisture Sensitivity Level: Must be MSL 1 or equivalent

Secondary Compatibility Criteria:

• Drive Voltage specifications (Max Rds On, Min Rds On) must align with 4.5V and 10V ratings
• Current rating (Id) may equal or exceed 140A depending on application thermal requirements
• Power Dissipation capability must support intended circuit operation

The IRLR8743TRPBF from Infineon Technologies meets all primary and secondary criteria with enhanced current rating (160A) and active product status. The AOD4132 from Alpha & Omega Semiconductor Inc. meets all primary criteria but with reduced current rating (85A), suitable for applications with lower current demands within the same voltage and package specifications.

Parameter Comparison

Engineering Selection Recommendations

IRLR8743TRPBF Selection Criteria:

The IRLR8743TRPBF is the primary substitute for the obsolete IRLR7833CTRLPBF. This part maintains identical voltage specifications (30V Vdss) and package configuration (TO-252-3 DPAK). The IRLR8743TRPBF offers enhanced current rating (160A continuous drain current) compared to the original 140A specification. Product status is active, ensuring long-term availability. RoHS3 compliance and REACH unaffected status align with current regulatory requirements. This substitute is suitable for direct replacement in applications requiring equal or greater current handling capacity.

AOD4132 Selection Criteria:

The AOD4132 serves as an alternative substitute when current requirements are reduced or thermal constraints limit the application to lower current operation. This part maintains the 30V voltage rating and TO-252-3 DPAK package compatibility. Continuous drain current is rated at 85A, representing a 39% reduction from the original specification. Product status is active with RoHS3 compliance and REACH unaffected status. Selection of this part requires verification that circuit operation remains within the 85A current limit and that thermal dissipation requirements do not exceed 100W (Tc) power rating.

Both substitute parts share identical gate voltage specifications (±20V Vgs Max), drive voltage ratings (4.5V/10V), and moisture sensitivity classification (MSL 1 Unlimited), ensuring compatibility with existing gate drive circuitry and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the IRLR8743TRPBF directly replace the IRLR7833CTRLPBF without circuit modification?

A: Yes. The IRLR8743TRPBF maintains identical voltage ratings (30V Vdss), gate voltage specifications (±20V), drive voltage requirements (4.5V/10V), and package configuration (TO-252-3 DPAK). The enhanced current rating (160A vs. 140A) and active product status make this a direct substitute. No circuit modifications are required.

Q: What are the limitations of using AOD4132 as a substitute?

A: The AOD4132 has a reduced continuous drain current rating of 85A compared to the original 140A specification. Applications requiring sustained current operation above 85A will exceed this part's rating. Additionally, power dissipation is limited to 100W (Tc), compared to 140W (Tc) for the original part. Circuit thermal analysis must confirm operation within these limits before selection.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the TO-252-3 DPAK package configuration with identical lead spacing and tab dimensions. PCB footprints designed for the IRLR7833CTRLPBF accommodate the IRLR8743TRPBF and AOD4132 without modification.

Q: Do the substitute parts meet the same regulatory compliance as the original?

A: The IRLR8743TRPBF and AOD4132 both carry RoHS3 compliance and REACH unaffected status. Regulatory compliance is maintained with both substitutes. Original part compliance status was not specified in available documentation.

Q: What is the difference in gate charge between the substitute parts?

A: The IRLR8743TRPBF specifies gate charge (Qg) of 59 nC @ 4.5V. The AOD4132 specifies 76 nC @ 10V. Gate charge differences may affect gate drive circuit performance, particularly in high-frequency switching applications. Gate drive circuit design should be verified to accommodate these specifications.

Q: Can both substitute parts be used interchangeably in the same design?

A: Interchangeability depends on circuit current and thermal requirements. The IRLR8743TRPBF is suitable for applications requiring 140A or higher current operation. The AOD4132 is suitable only for applications with sustained current operation below 85A. Both parts are not interchangeable in all applications; circuit requirements must determine which substitute is appropriate.