UM6K33NTN vs EPC2001C: Component Comparison for Power Electronics Engineers
Quick verdict
For low-voltage, low-current switching or level-shifting applications where compact dual MOSFET arrays and logic-level drive are critical, the UM6K33NTN is the practical choice. Conversely, for high-current, high-efficiency power stages requiring extremely low R_DS(on) and fast switching at voltages up to 100 V, the EPC2001C GaN FET excels, albeit with more demanding gate drive and thermal management.
Spec comparison table
| Spec | UM6K33NTN | EPC2001C | Notes |
|---|---|---|---|
| Configuration | 2 N-Channel (Dual) | Single N-Channel | UM6K33NTN offers dual MOSFETs in one package, useful for half-bridge or push-pull circuits. |
| Continuous drain current @ 25°C | 200 mA | 36 A | EPC2001C supports 180x higher current, enabling power stage use rather than signal-level. |
| Max drain-source voltage (V_DS) | 50 V | 100 V | EPC2001C supports double voltage, enabling higher voltage rails or margin. |
| Gate drive voltage | Logic level, 1.2 V drive | 5 V drive | UM6K33NTN can be driven directly from low-voltage logic; EPC2001C requires dedicated gate drive. |
| Gate charge (Q_G) | Not specified | 9 nC @ 5 V | EPC2001C’s gate charge is low for its current rating, but higher than typical low-power MOSFETs, impacting gate driver design. |
| Input capacitance (C_iss) | 25 pF @ 10 V | 900 pF @ 50 V | UM6K33NTN’s input capacitance is 36x smaller, reducing gate drive losses and EMI at low power. |
| Mounting type | Surface mount (UMT6) | Surface mount (Die) | EPC2001C is provided as a bare die, requiring advanced packaging or integration. |
| Operating temperature range (T_J) | Up to 150°C | -40°C to 150°C | Both devices support up to 150°C junction; EPC2001C offers wider ambient range. |
| Package | 6-TSSOP, SC-88, SOT-363 | Die | UM6K33NTN is in a standard small SMT package, easier to handle in typical PCB assembly. |
| Max power dissipation | 120 mW | Not specified | UM6K33NTN has explicit power dissipation limit; EPC2001C power dissipation depends on cooling and layout. |
| R_DS(on) max @ I_D, V_GS | 2.2 Ω @ 0.2 A, 4.5 V | 7 mΩ @ 25 A, 5 V | EPC2001C’s R_DS(on) is orders of magnitude lower, critical for conduction loss reduction. |
| V_GS(th) max @ I_D | 1 V @ 1 mA | 2.5 V @ 5 mA | UM6K33NTN turns on at lower gate voltage, compatible with low-voltage logic. |
| Technology | MOSFET (Silicon) | GaNFET (Gallium Nitride) | EPC2001C uses GaN technology for superior switching and conduction performance at high power. |
Design trade-offs
The UM6K33NTN is a low-voltage, low-current dual MOSFET array optimized for signal-level switching or load switching with minimal gate drive complexity. Its 2.2 Ω R_DS(on) at 200 mA and 4.5 V gate drive means it’s suitable only for loads under a few hundred milliamps, with conduction losses easily managed in small SMT packages. The 25 pF input capacitance keeps gate drive losses and switching EMI low, and the logic-level gate drive threshold (1.2 V drive, 1 V threshold) allows direct interfacing to low-voltage MCUs or FPGAs without dedicated drivers.
In contrast, the EPC2001C is a single, bare die GaN FET targeting high-efficiency power conversion at up to 100 V and continuous currents of 36 A. Its R_DS(on) of 7 mΩ at 25 A and 5 V gate drive drastically reduces conduction losses compared to silicon MOSFETs, enabling denser, cooler power stages. However, its gate charge of 9 nC is significant and requires a robust gate driver capable of fast, high-current pulses to minimize switching losses and avoid device stress. The bare die package demands advanced packaging or integration techniques and careful PCB layout to manage thermal dissipation and parasitic inductances.
Thermally, the UM6K33NTN’s 120 mW max power rating confines it to low-power tasks with simple heat sinking, while the EPC2001C’s thermal dissipation depends heavily on PCB design and heat sinking due to its high current capability. The EPC device’s wider gate voltage limits (+6 V / -4 V) offer some margin for gate drive voltage overshoot or undershoot, but require gate drivers designed for GaN’s unique characteristics, including zero body diode and potential for voltage overshoot.
From a cost perspective, the UM6K33NTN is likely cheaper and easier to source and implement due to its standard SMT package and silicon MOSFET technology. The EPC2001C, as a GaN die, will be more expensive and require specialized assembly, but delivers vastly superior performance in power density and efficiency.
Use-case fit
Choose UM6K33NTN when…
- Implementing low-current load switches or level shifters in 3.3 V or lower logic systems.
- Space-constrained dual switch applications requiring integrated dual MOSFETs in a small SMT package.
- Switching small loads (<200 mA) where gate drive simplicity and minimal external components are priorities.
- Designs where cost sensitivity and ease of assembly drive component selection.
- Signal multiplexing or low-voltage analog switching with minimal conduction loss concerns.
Choose EPC2001C when…
- Designing high-efficiency DC-DC converters or synchronous rectifiers operating up to 100 V rails.
- Power stages requiring continuous current in the tens of amperes with minimal conduction and switching loss.
- Applications where power density is critical, and PCB real estate and thermal management are carefully engineered.
- High-frequency switching applications benefiting from GaN’s fast switching and low gate charge.
- Systems where dedicated GaN gate drivers and advanced packaging are acceptable trade-offs for efficiency gains.
Drop-in compatibility
These devices are not pin-compatible or footprint-compatible. The UM6K33NTN is a dual MOSFET array in a 6-lead SMT package (UMT6), while the EPC2001C is a bare GaN die with a completely different form factor and electrical characteristics.
Substituting one for the other would require redesigning the PCB footprint, gate drive circuitry, and thermal management. Moreover, the EPC2001C demands a dedicated GaN gate driver, whereas the UM6K33NTN can be driven directly by low-voltage logic.
No direct drop-in replacement is possible without significant board and system-level redesign.
Alternatives to consider
- Si2302DS (Vishay): Small-signal logic-level N-channel MOSFET with low R_DS(on) for low-current switches, suitable alternative to UM6K33NTN.
- BSC123N04LS (Infineon): 40 V, low R_DS(on) logic-level MOSFET in a small SMT package, balancing power and gate drive requirements.
- GS61004B (GaN Systems): 100 V, GaN FET in a discrete package, similar power class to EPC2001C but easier to implement in standard SMT processes.