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Looking for "Total gate charge Qg typical" in 2409302302_Infineon-Technologies-IRLR7833TRPBF_C538177.pdf

Looking for "RDS(on) at VGS = 10 V and VGS = 4.5 V" in 2409302302_Infineon-Technologies-IRLR7833TRPBF_C538177.pdf

Looking for "Drain-source voltage rating VDS absolute maximum" in Infineon_IRLR7843_DataSheet_v01_01_EN-3363700.pdf

Looking for "Drain-source voltage VDS absolute maximum" in 2409302302_Infineon-Technologies-IRLR7833TRPBF_C538177.pdf

Looking for "On-resistance RDS(on) at VGS = 10 V and at VGS = 4.5 V" in Infineon_IRLR7843_DataSheet_v01_01_EN-3363700.pdf

Looking for "Continuous drain current ID at TC = 25 C" in 2409302302_Infineon-Technologies-IRLR7833TRPBF_C538177.pdf

Looking for "Continuous drain current ID at TC = 25 C" in Infineon_IRLR7843_DataSheet_v01_01_EN-3363700.pdf

Looking for "Continuous drain current ID at TC = 25 C" in 2410010131_Nexperia-PSMN1R0-30YLDX_C478145.pdf

Looking for "Total gate charge Qg typical" in 2410010131_Nexperia-PSMN1R0-30YLDX_C478145.pdf

Looking for "RDS(on) at VGS = 10 V and VGS = 4.5 V" in 2410010131_Nexperia-PSMN1R0-30YLDX_C478145.pdf

Looking for "Total gate charge Qg typical" in Infineon_IRLR7843_DataSheet_v01_01_EN-3363700.pdf

Looking for "Total gate charge Qg" in 2005300012_Infineon-Technologies-IRLR8729TRLPBF_C538182.pdf

Looking for "Total gate charge Qg typical" in irlr8726pbf.pdf

Looking for "Continuous drain current ID at TC = 25 C" in irlr8726pbf.pdf

Looking for "RDS(on) at VGS = 10 V and 4.5 V" in 2005300012_Infineon-Technologies-IRLR8729TRLPBF_C538182.pdf

Looking for "VDS rating" in irlr8726pbf.pdf

Looking for "RDS(on) values at VGS = 10 V and 4.5 V" in ntd4906n-d.pdf

Looking for "Continuous drain current ID at TC = 25 C" in ntd4906n-d.pdf

Looking for "VDS absolute maximum rating" in 2005300012_Infineon-Technologies-IRLR8729TRLPBF_C538182.pdf

Looking for "Continuous drain current ID at TC = 25 C" in 2005300012_Infineon-Technologies-IRLR8729TRLPBF_C538182.pdf

Looking for "RDS(on) at VGS = 10 V and at VGS = 4.5 V" in irlr8726pbf.pdf

Looking for "VDS absolute maximum rating" in 2410010131_Nexperia-PSMN1R0-30YLDX_C478145.pdf

Looking for "Total gate charge Qg" in ntd4906n-d.pdf

Looking for "VDS absolute maximum rating" in ntd4906n-d.pdf

Looking for "Continuous drain current ID at TC = 25 C" in 2005300012_Infineon-Technologies-IRLR8743TRLPBF_C538183.pdf

Looking for "Total gate charge Qg typical" in 2005300012_Infineon-Technologies-IRLR8743TRLPBF_C538183.pdf

Looking for "RDS(on) at VGS = 10 V and at VGS = 4.5 V" in 2005300012_Infineon-Technologies-IRLR8743TRLPBF_C538183.pdf

Looking for "VDS absolute maximum rating" in 2005300012_Infineon-Technologies-IRLR8743TRLPBF_C538183.pdf

Looking for "Gate charge Qg typical value and test conditions" in irlr8726pbf.pdf

Preparing to gather component information.

Here are strong, spec-compatible N‑channel 30 V alternatives to IRLR8743TRLPBF. I focused on logic‑level RDS(on) at 4.5 V/10 V, gate charge, and high current capability. Values are taken directly from datasheets.
Baseline (for comparison)
  • IRLR8743TRLPBF — DPAK
    • VDS: 30 V
    • RDS(on): 2.4 typ / 3.1 max mΩ @10 V; 3.0 typ / 3.9 max mΩ @4.5 V
    • Qg typ: 39 nC
    • ID @25 C: 160 A
    • Datasheet: 2005300012_Infineon-Technologies-IRLR8743TRLPBF_C538183.pdf
Recommended alternatives
  • IRLR7843TRPBF — DPAK
    • VDS: 30 V
    • RDS(on): 2.6 typ / 3.3 max mΩ @10 V; 3.2 typ / 4.0 max mΩ @4.5 V
    • Qg typ: 34 nC
    • ID @25 C: 161 A
    • Datasheet: PDF
  • IRLR7833TRPBF — DPAK/TO‑252‑2
    • VDS: 30 V
    • RDS(on): 3.6 typ / 4.5 max mΩ @10 V; 4.4 typ / 5.5 max mΩ @4.5 V
    • Qg: (not specified in retrieved section)
    • ID @25 C: 140 A
    • Datasheet: 2409302302_Infineon-Technologies-IRLR7833TRPBF_C538177.pdf
  • IRLR8726TRPBF — DPAK
    • VDS: 30 V
    • RDS(on): 4.0 typ / 5.8 max mΩ @10 V; 5.8 typ / 8.0 max mΩ @4.5 V
    • Qg: 15 typ (23 max) nC (VDS = 15 V, ID = 20 A)
    • ID @25 C: 86 A
    • Datasheet: PDF
  • IRLR8729TRLPBF — DPAK/TO‑252‑2
    • VDS: 30 V
    • RDS(on): 6.0 typ / 8.9 max mΩ @10 V; 8.9 typ / 11.9 max mΩ @4.5 V
    • Qg typ: 10 nC
    • ID @25 C: 58 A
    • Datasheet: 2005300012_Infineon-Technologies-IRLR8729TRLPBF_C538182.pdf
  • PSMN1R0-30YLDX — LFPAK56-4 (not pin‑compatible, but excellent electricals)
    • VDS: 30 V
    • RDS(on): 0.79 typ / 1.02 max mΩ @10 V; 1.0 typ / 1.3 max mΩ @4.5 V
    • Qg typ: 38.2 nC
    • ID @25 C: 300 A (Tmb)
    • Datasheet: PDF available via Nexperia
  • NTD4906N — DPAK (higher RDS(on), very low Qg)
    • VDS: 30 V
    • RDS(on): 4.6 typ / 5.5 max mΩ @10 V; 6.5 typ / 8.0 max mΩ @4.5 V
    • Qg typ: 11 nC @4.5 V; 24 nC @10 V
    • ID @25 C: 54 A
    • Datasheet: PDF available via onsemi
Selection guidance (best practices)
  • Match VDS ≥ your max rail with margin; these are all 30 V parts.
  • Ensure RDS(on) at your actual gate drive (4.5 V vs 10 V) meets loss targets.
  • Consider Qg vs your driver: lower Qg eases MCU drive; higher Qg benefits ultra‑low RDS(on) but may need a gate driver.
  • Derate power: use no more than 75% of rated maximum power.
  • For design fit, confirm package: DPAK/TO‑252 parts above are closest to IRLR8743; LFPAK56 offers better performance if layout change is acceptable.
Quick picks
  • Drop‑in class DPAK with similar or better RDS(on): IRLR7843TRPBF.
  • If ultra‑low conduction loss is key and a package change is OK: PSMN1R0-30YLDX.
  • If you need very low gate charge for fast drive from a weak GPIO: NTD4906N or IRLR8729TRLPBF.
Want me to add one of these to your schematic and wire it to your G/D/S terminals, or search only DPAK pin‑compatible parts? Also, what is your gate drive voltage, peak/avg load current, and switching frequency? That will let me validate losses and margins precisely.
Give MOSFET requirements
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Choose specific replacement
Check gate-drive suitability
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    IRLR8743TRLPBF/IRLR8743TRLPBF.3dshapes/TO-252-2-3P_L6.5-W6.1-H2.3-LS10.0-P4.5.step

    IRLR8743TRLPBF/IRLR8743TRLPBF Model3D Model
    IRLR8743TRLPBF Symbol.svg

    IRLR8743TRLPBF Symbol.svg

    IRLR8743TRLPBF SymbolDefault
    kicad_mod

    IRLR8743TRLPBF/IRLR8743TRLPBF.pretty/DPAK_L6.5-W6.0-P2.29-LS9.9-TL.kicad_mod

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    IRLR8743TRLPBF

    IRLR8743TRLPBF thumbnail
    MOSFETs IRLR8743TRLPBF DPAK_L6.5-W6.0-P2.29-LS9.9-TL LCSC Part Number: C538183 JLCPCB Part Class: Extended Part Manufactured by Infineon(英飞凌)

    Properties

    Infineon(英飞凌)

    Q

    lcsc.com/datasheet/lcsc_datasheet_2005300012_Infineon-Technologies-IRLR8743TRLPBF_C538183.pdf

    IRLR8743TRLPBF

    C538183

    lcsc.com/product-detail/MOSFET_Infineon-Technologies-IRLR8743TRLPBF_C538183.html

    DPAK_L6.5-W6.0-P2.29-LS9.9-TL

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    Extended Part

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