Schematic Assistance Request

24:54

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

Prefer drop-in package

Choose specific replacement

Check gate-drive suitability

Need second-source strategy

107 days

Reviews

Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
jharwinbarrozo
43.0M
Power Net Portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
jharwinbarrozo
11.4M
Generic Resistor
A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Inductor
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
jharwinbarrozo
15.9k
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
jharwinbarrozo
1.2M
875105359001
10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
jharwinbarrozo
1.1M