ROHM News Detail

ROHM’s New N-channel MOSFETs Offer High Mounting Reliability in Automotive Applications
AEC-Q101 qualified designs contribute to greater miniaturization and high-efficiency operation

September 19th, 2024

Packages

ROHM has released N-channel MOSFETs - RF9x120BKFRA / RQ3xxx0BxFRA / RD3x0xxBKHRB - featuring low ON-resistance ideal for a variety of automotive applications, including motors for doors and seat positioning, as well as LED headlights. Sales have begun with 10 models across 3 package types, with plans to expand the lineup in the future.

The automotive sector is seeing a surge in the number of electronic components, driven by the demand for enhanced safety and convenience. At the same time, there is a pressing need for improved power efficiency to optimize fuel and electricity consumption. Especially for MOSFETs essential for switching applications in automotive systems, there is a growing requirement for lower ON resistance to minimize loss and heat generation.

ROHM, which has been supplying low ON-resistance MOSFETs for consumer and industrial equipment, has now extended this technology to the automotive sector. Adapting cutting-edge medium voltage processes to meet the stringent reliability requirements of automotive products allowed us to develop 10 N-channel MOSFET models characterized by low ON resistance.

Offered in voltage ratings of 40V, 60V, and 100V, the new products incorporate a split-gate structure to achieve low ON-resistance, contributing to higher efficiency operation in automotive applications. All models are qualified under the AEC-Q101 automotive reliability standard, guaranteeing exceptional high reliability.

Users can select from among three package types, depending on the application. For space-constrained sets like Advanced Driver Assistance Systems (ADAS), the compact DFN2020Y7LSAA (2.0mm × 2.0mm) and HSMT8AG (3.3mm × 3.3mm) packages are ideal. For automotive power applications, the widely used TO-252 (DPAK) package (6.6mm × 10.0mm) is also available. In addition, ROHM has further enhanced mounting reliability by utilizing wettable flank technology for the DFN2020Y7LSAA package and gull-wing leads for the TO-252 package.

Going forward, ROHM plans to expand its lineup of medium-voltage N-channel MOSFETs to provide even greater miniaturization and higher efficiency in automotive applications. Mass production of the DFN3333 (3.3mm × 3.3mm) and HPLF5060 (5.0mm × 6.0mm) packages is scheduled for October 2024, followed by 80V products in 2025. P-channel products are also scheduled for future release.

Product Lineup

Part No. Data
Sheet		 VDSS
[V]		 ID
[A]		 RDS(on) [mΩ] Qg [nC] Ciss
[pF]		 Tj
Max.
[°C]		 Package*2
[mm]		 Automotive
Grade
(AEC-Q101 qualified)
VGS=10V VGS=4.5V VGS=10V
Typ. Max. Typ. Max. Typ.
NewRF9G120BKFRA PDF 40 12 13.5 17.5 19.6 26 8.5 470 150 (DFN2020Y7LSAA)
[2.0×2.0×0.6]
DFN2020Y7LSAA		 YES
NewRF9L120BKFRA PDF 60 23 30 31 42 7.3 440
NewRQ3G270BKFRA PDF 40 27 7.4 9.6 10 13.9 19 1030 150 (HSMT8AG)
[3.3×3.3×0.8]
HSMT8AG
NewRQ3L270BKFRA PDF 60 11.3 14.6 14.8 21 15 990
NewRQ3L270BLFRA PDF 11.3 14.7 13.8*1 19.3*1 15 1080
NewRQ3L120BKFRA PDF 12 23 30 31 43 7.3 440
NewRQ3P270BKFRA PDF 100 27 21 27 26 36 13.6 670
NewRD3G08CBKHRB PDF 40 80 2.4 3.1 3.6 6.1 41 2570 175 TO-252
<DPAK>
[6.6×10.0×2.2]
TO-252
NewRD3L04BBKHRB PDF 60 40 10.4 13.5 15 21 13 760
NewRD3P06BBKHRB PDF 100 59 12.1 15.8 15.6 22 17.3 1110

*1: VGS=6.0V
*2: Package types are basically indicated by JEDEC code, ROHM package with ( ), GENERAL code with < >.

Application Examples

◇ Vehicle motors (e.g., doors, seat positioning, power windows)
◇ LED headlights
◇ Car infotainment / displays
◇ Advanced Driver Assistance Systems (ADAS)

Internet Sales Information

Online Distributors: DigiKey, Mouser and Farnell
Pricing: $3.50/unit (samples, excluding tax)
Availability: Now (OEM quantities)
The products will be offered at other online distributors as they become available.
(Sales Launch Date: June 2024)

Online Distributors

  • DigiKey
  • Mouser
  • Farnell

Terminology

ON resistance (Ron)
The resistance value between the Drain and Source while the MOSFET is ON. The smaller this value is, the lower the (power) loss during conduction.
N-channel MOSFET
A type of MOSFET that conducts when a positive voltage is applied to the Gate relative to the Source. N-channel MOSFETs are more widely adopted in the market today due to their lower ON-resistance (RDS(on)) over P-channel variants, facilitating use in a broad range of circuits.
Split Gate Structure
A technology that divides the gate of the MOSFET into multiple parts to efficiently regulate the flow of electrons. This ensures fast, reliable operation.
Wettable Flank Technology
A technique for plating the sides of the lead frame on bottom electrode packages to improve mounting reliability.
Gull Wing Leads
A terminal structure that spreads outwards from both sides of the package. It achieves excellent heat dissipation along with increased mounting reliability.