In numerous low-voltage, small-signal switching, and power management application scenarios such as portable device load switches, battery protection circuits, sensor interfaces, and low-power DC-DC converters, ROHM's RK7002T116, known for its compact SOT-23 package and balanced performance, has been a common choice for designers. However, facing challenges like extended lead times and potential supply chain vulnerabilities, the need for a reliable, high-performance domestic alternative has become increasingly critical for ensuring project stability and cost efficiency. Addressing this market demand, VBsemi introduces the VB162K N-channel MOSFET, a meticulously engineered pin-to-pin replacement for the RK7002T116. It delivers enhanced electrical parameters, robust reliability, and full package compatibility, offering a seamless and upgraded solution for space-constrained, low-power designs.
Enhanced Electrical Performance for Greater Design Margin and Efficiency.
Designed as a direct successor to the RK7002T116, the VB162K demonstrates significant improvements in key specifications, providing stronger performance and higher reliability:
• The drain-source voltage (VDS) is maintained at 60V, matching the original part, ensuring suitability for the same application voltage domains.
• The continuous drain current (ID) is substantially increased to 0.3A (300mA), more than 2.6 times the original 115mA rating. This major upgrade offers ample current headroom, enhances system robustness, and supports potential power scaling.
• The on-state resistance is drastically reduced to 2800 mΩ (2.8Ω) at VGS=10V, a remarkable improvement over the RK7002T116's 7.5Ω. This lower RDS(on) minimizes conduction losses, improves overall efficiency, and reduces heat generation in switching applications.
• The device features a standard ±20V gate-source voltage (VGS) rating, ensuring good gate robustness. The 1.7V typical threshold voltage (Vth) ensures easy drive compatibility with common logic-level signals and microcontrollers, facilitating easy integration.
Advanced Trench Technology for Reliable Operation.
The VB162K leverages modern Trench MOSFET technology, which provides excellent switching characteristics and low on-resistance in a miniature footprint. This technology ensures stable and fast switching performance, which is crucial for signal integrity and power management in sensitive low-power circuits. The device is designed to operate reliably over a broad temperature range, making it suitable for consumer electronics, IoT devices, and industrial modules where consistent performance is required.
Seamless Drop-In Replacement with SOT-23-3 Package.
A primary concern in component substitution is the redesign effort and associated costs. The VB162K eliminates this hurdle entirely through its fully compatible SOT-23-3 package. The pinout, footprint, and package dimensions are identical to those of the RK7002T116. Engineers can perform a direct replacement on the existing PCB layout without any modification to the circuitry or board design, achieving true "plug-and-play" substitution. This compatibility drastically reduces verification time, eliminates re-tooling costs, and accelerates the time-to-market for end products.
Local Supply Chain Assurance and Responsive Support.
Compared to the uncertainties surrounding international component procurement, VBsemi provides a stable and secure local supply chain for the VB162K. With streamlined production and logistics, lead times are significantly shorter and more predictable. Furthermore, as a domestic supplier, VBsemi offers dedicated local technical support, providing prompt assistance, comprehensive datasheets, application notes, and sample support. This resolves common pain points such as delayed foreign supplier responses and logistical complexities, making the design and production process smoother and more efficient.
From portable electronics and battery-powered devices to various low-power control and switching modules, the VB162K stands out as the preferred domestic alternative to the ROHM RK7002T116. Its core advantages of "higher current capability, lower conduction loss, perfect package compatibility, and secured local supply" make it an intelligent choice for upgrading system performance and supply chain resilience. Choosing the VB162K is not just a simple component swap; it is a strategic move towards greater design flexibility, cost optimization, and supply chain independence—all achieved without any design risk or modification effort.