FCAB21490L1 MOSFET — Specifications & Equivalents
About the FCAB21490L1
The FCAB21490L1 is an N-channel MOSFET with a drain–source voltage (VDS) rating of 12 V, a continuous drain current (ID) of 13.5 A and an on-resistance (RDS(on)) of 0.00275 Ω. It can dissipate up to 0.54 W and is rated to a junction temperature of 150 °C. It is supplied in the TCSP1530011-N1 package.
At a glance
- Type: N-channel MOSFET
- Max drain–source voltage (VDS): 12 V
- Max continuous drain current (ID): 13.5 A
- On-resistance (RDS(on)): 0.00275 Ω
- Power dissipation (PD): 0.54 W
- Max junction temperature (TJ): 150 °C
- Package: TCSP1530011-N1
Typical applications
With its 12 V drain–source rating the FCAB21490L1 sits in the very-low-voltage class of switching MOSFETs, typically found in battery protection and power-path switching, point-of-load converters and logic-level load switching in portable devices.
The low 0.00275 Ω on-resistance keeps conduction loss down, which suits synchronous rectification and continuous high-current paths.
Gate drive and switching notes
Keep gate–source voltage within the ±8 V maximum; exceeding it punctures the gate oxide and destroys the device permanently.
Switching behaviour is characterised by a rise time of 1500 ns and an output capacitance (Coss) of 460 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.
Choosing a replacement for the FCAB21490L1
A drop-in substitute for the FCAB21490L1 must be the same N-channel type and offer a drain–source rating of at least 12 V, a continuous drain current rating of at least 13.5 A and an on-resistance no higher than 0.00275 Ω if efficiency and heat matter.
Mechanically, check the replacement against the TCSP1530011-N1 footprint and confirm the pin order — parts sharing a package outline do not always share a pinout.
Where the application switches inductive loads or runs near the voltage limit, keep extra headroom rather than choosing a part that only just meets the original numbers.
Frequently asked questions
What is the FCAB21490L1?
The FCAB21490L1 is an N-channel MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 12 V drain-source and 13.5 A continuous drain current.
What is the maximum voltage of the FCAB21490L1?
The FCAB21490L1 has a maximum drain-source voltage (Vds) of 12 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.
How much current can the FCAB21490L1 handle?
It is rated for 13.5 A of continuous drain current, with power dissipation limited to 0.54 W. Real-world capability depends on your heatsinking and ambient temperature.
What is the on-resistance of the FCAB21490L1?
On-resistance (Rds(on)) is 0.00275 Ω. Multiply by the square of your load current to estimate conduction loss.
What package does the FCAB21490L1 come in?
It is listed in TCSP1530011-N1. Verify the pinout of the specific variant, as one outline can carry different pin assignments.
What can I use to replace the FCAB21490L1?
No verified equivalents are listed yet. Choose a part of the same polarity that meets or exceeds every rating above and shares a compatible package and pinout.
Key Specifications
| Type | MOSFET |
|---|---|
| Channel Type | N -Channel |
| Drain-Source Voltage (Vds) | 12 V |
| Gate-Source Voltage (Vgs) | 8 V |
| Drain Current (Id) | 13.5 A |
| Drain-Source On-Resistance (Rds) | 0.00275 |
| Rise Time (tr) | 1500 nS |
| Output Capacitance (Coss) | 460 pF |
| Junction Temperature (Tj) | 150 °C |
| Package | TCSP1530011-N1 |
| Power Dissipation (Pd) | 0.54 W |
Equivalent & Replacement Parts
No verified equivalents are listed for FCAB21490L1 yet.