Component Comparison: NX3008NBKS,115 vs AIMCQ120R020M1TXTMA1
Quick verdict
For low-voltage, low-current switching and signal-level applications, the NX3008NBKS,115 is the clear choice due to its small footprint, dual-channel MOSFET array, and low gate charge. For high-voltage, high-current power conversion, especially in automotive traction or industrial drives, the AIMCQ120R020M1TXTMA1 dominates with its 1200 V rating, 116 A capability, and SiC technology enabling higher efficiency and thermal performance.
Spec comparison table
| Spec | NX3008NBKS,115 | AIMCQ120R020M1TXTMA1 | Notes |
|---|---|---|---|
| Product type | Mosfet Array, 2 N-Channel (Dual) | N-Channel MOSFET | NX3008NBKS offers dual devices in one package; AIMCQ120R020M1 is a single high-power device. |
| Drain-source voltage max (V) | 30 V | 1200 V | AIMCQ120R020M1 supports much higher voltage; necessary for high-voltage power conversion. |
| Continuous drain current Id (A) @25°C | 0.35 A | 116 A (at Tc) | AIMCQ120R020M1 supports >300x current; NX3008NBKS only suitable for signal/small load currents. |
| Drain current spiking max (A) | 1.4 A | Not specified | NX3008NBKS limited to small spike current. |
| On-state resistance Rds(on) typical @25°C | 1.5 Ω | 0.025 Ω @ 43A, 20V | AIMCQ120R020M1 has far lower Rds(on) at high current, critical for efficiency at power levels. |
| Gate charge Qg max (nC) | 0.68 nC @ 4.5 V | 82 nC @ 20 V | NX3008NBKS requires very low gate charge drive current; AIMCQ120R020M1 requires strong gate driver. |
| Gate-source threshold voltage Vgs_th max | 1.1 V @ 250 μA | 5.1 V @ 13.7 mA | NX3008NBKS is logic-level, easier to drive from low-voltage logic. |
| Gate-source voltage max | ±8 V | +25 V / -10 V | AIMCQ120R020M1 tolerates higher gate drive voltage, enabling lower Rds(on). |
| Input capacitance Ciss typical (pF) | 34–50 pF | 2667 pF @ 800 V | NX3008NBKS has extremely low input capacitance, enabling fast switching at low power. |
| Output capacitance Coss typical (pF) | 6.5 pF | Not specified | NX3008NBKS output capacitance is minimal, reducing switching loss at low voltage. |
| Reverse transfer capacitance Crss typical (pF) | 2.2 pF | Not specified | Low Crss in NX3008NBKS reduces Miller effect, useful for sensitive gate drive control. |
| Power dissipation max (W) | 445 mW | 577 W (at Tc) | AIMCQ120R020M1 supports orders of magnitude higher power dissipation; NX3008NBKS is low power. |
| Thermal resistance junction-to-ambient (typ) | 300 K/W (device) | Not specified | NX3008NBKS has high thermal resistance, limiting power handling without heatsinking. |
| Operating temperature range (°C) | -55 to +150 | -55 to +175 | AIMCQ120R020M1 supports higher max TJ, suitable for harsh environments. |
| Package type | 6-TSSOP, SC-88, SOT-363 | PG-HDSOP-22 | NX3008NBKS is small dual MOSFET array; AIMCQ120R020M1 is a larger module for power handling. |
| Electrostatic Discharge rating (V) | 2000 V | Not specified | NX3008NBKS has moderate ESD protection; unknown for AIMCQ120R020M1. |
| Technology | MOSFET (Metal Oxide) | SiCFET (Silicon Carbide) | AIMCQ120R020M1’s SiC tech offers higher voltage, efficiency, and thermal performance. |
| Drain leakage current typical @25°C (μA) | 1 μA | Not specified | Low leakage in NX3008NBKS suitable for low-power applications. |
| Gate leakage current typical @25°C (μA) | 0.2–1 μA | Not specified | NX3008NBKS gate leakage is low, consistent with logic-level MOSFETs. |
| Transient thermal impedance (K/W) | 0.01–1 (varies with time scale) | Not specified | NX3008NBKS datasheet provides detailed transient thermal impedance; none for AIMCQ120R020M1. |
| Total power dissipation typical (mW) | 280 mW | Not specified | NX3008NBKS power dissipation typical is very low, matching its low current rating. |
Design trade-offs
The NX3008NBKS,115 and AIMCQ120R020M1TXTMA1 serve vastly different segments of the MOSFET market. The NX3008NBKS is a dual, low-voltage, low-current MOSFET array optimized for signal switching, load switching, or small power domains. Its extremely low gate charge (0.68 nC max at 4.5 V) and logic-level gate threshold (max 1.1 V) allow it to be driven directly from low-voltage microcontrollers or logic without dedicated gate drivers. Its total power dissipation of 445 mW max and high Rds(on) (~1.4 Ω at 350 mA) limit it to milliwatt-level loads. The small 6-TSSOP package and low input/output capacitances support compact PCB layouts and fast switching speeds at low power levels, but the thermal resistance is high, so any power dissipation beyond a few hundred milliwatts requires careful thermal design.
In contrast, the AIMCQ120R020M1TXTMA1 is a high-voltage (1200 V), high-current (116 A continuous at case temperature) SiC MOSFET module designed for power conversion in automotive or industrial environments. The SiCFET technology enables very low conduction losses, with Rds(on) of 25 mΩ at 43 A gate drive and 20 V drive voltage, which is orders of magnitude lower than the NX3008NBKS. However, this performance requires a strong gate driver capable of delivering 82 nC of gate charge at 20 V, and the gate threshold voltage is much higher (5.1 V max at 13.7 mA), so direct MCU driving is not practical. The thermal dissipation capability (577 W at case temperature) demands substantial heatsinking and robust PCB layout with thick copper planes or baseplates. The large PG-HDSOP-22 package reflects this power handling requirement. The much higher input capacitance (2667 pF vs 50 pF) means switching losses and gate drive losses are significant and must be managed through careful driver design and switching frequency optimization.
From a firmware and gate driver perspective, NX3008NBKS can be driven directly by standard logic signals with minimal delay or power loss, simplifying control. The AIMCQ120R020M1, however, requires dedicated high-voltage, high-current gate drivers, often isolated or with level shifting, and careful attention to switching speed to balance efficiency and EMI. Due to the high voltage and current levels, layout sensitivity is critical for the AIMCQ120R020M1 to avoid parasitic inductance and ensure safe operation, while NX3008NBKS is more forgiving due to its low power.
Cost-wise, the NX3008NBKS is a low-cost component suitable for volume applications where cost and PCB space are constrained. The AIMCQ120R020M1 is a premium device reflecting its SiC technology, high voltage, and power capability, making it suitable only when such performance justifies the cost.
Use-case fit
Choose NX3008NBKS,115 when…
- Implementing low-voltage load switches or level shifters on 3.3 V or 5 V logic rails.
- Switching small currents up to 350 mA, e.g., LED drivers, sensor power gating, or signal multiplexing.
- Designing compact, low-cost boards requiring dual MOSFETs in a small 6-TSSOP footprint.
- Operating in automotive environments needing AEC-Q101 qualification but without high power requirements.
- Requiring a logic-level gate MOSFET array with minimal gate drive current for battery-powered devices.
Choose AIMCQ120R020M1TXTMA1 when…
- Designing traction inverters or motor drives requiring 1200 V blocking voltage and >100 A current.
- Building high-efficiency DC-DC converters or inverters in automotive or industrial applications with harsh thermal profiles.
- Needing silicon carbide technology to reduce conduction and switching losses at high voltages.
- Operating in environments with junction temperatures up to