- Stock: 27
- Model: Fusible-1808FastBlow
1808-size fast-acting surface-mount fuse, available in 10 A, 15 A and 20 A versions. It can be used to repair boards and circuits requiring the same package, current rating and operating characteristic.
The 10 A and 15 A versions can replace the corresponding fuses on the BIGTREETECH SKR 2. Selection must be based on the original circuit position and specification. A higher-current fuse must not be installed simply to prevent it from opening again.
Main features
- Type: fast-acting fuse.
- Package: SMD 1808.
- Surface-mount soldered installation.
- Available ratings: 10 A, 15 A and 20 A.
- One piece per order.
- Suitable as an SKR 2 replacement when the correct rating is selected for the original position.
Selection for BIGTREETECH SKR 2
According to the official BIGTREETECH schematic, the SKR 2 uses the following fuse positions:
| SKR 2 position | Specified rating | Circuit branch |
|---|---|---|
| F2 | 10 A | VMOT power supply |
| F4 | 15 A | Heated-bed VBED supply |
The 20 A version does not correspond to the F2 or F4 positions shown in the official SKR 2 schematic. It should only be used where the circuit documentation expressly specifies a 20 A fast-acting 1808 SMD fuse.
Suitable as a replacement for our BIGTREETECH SKR 2 board, selecting 10 A for F2 or 15 A for F4.
Before replacing a fuse
An open fuse generally indicates an overload, short circuit, incorrect connection or failed component. Identify the cause before fitting a replacement, as the new fuse may open again or further damage may occur.
- Disconnect both the power supply and USB connection.
- Identify the original fuse position and current rating.
- Check heaters, motors, fans, wiring and MOSFET outputs for short circuits.
- Verify connector condition and polarity.
- Use only the rating specified by the circuit manufacturer.
Compatibility
The 1808 package and current rating alone do not guarantee compatibility with every board. The fast-acting characteristic, required voltage rating, interrupting capacity and circuit operating conditions must also match.
The voltage rating and interrupting capacity of these variants are not stated in the available product information. These parameters must be verified before using the fuse in applications other than the SKR 2.
Installation
Replacement requires desoldering the original fuse and soldering the new SMD component without damaging nearby tracks or components. Appropriate equipment and electronic repair experience are recommended.
Never bridge the fuse with solder, wire or another conductor. Doing so removes the intended protection and may cause serious damage, overheating or fire.
Package contents
- 1 × 1808 SMD fast-acting fuse in the selected current rating.
