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Littelfuse 0.9 A Resettable Fuse 16V DC Radial Lead PolySwitch PTC Device RUSBF090
Specifications
| Country of Origin | India |
|---|---|
| Voltage | 16V dc |
| Brand | Littelfuse |
| Height | 12.2mm |
| Length | 7.4mm |
| Model | RUSBF090 |
| Width | 3.1mm |
| Current Rating | 40A |
| Series | RUSBF |
| Maximum Operating Temperature | 60°C |
| Minimum Operating Temperature | -40°C |
| Trip Current | 1.8A |
| Power Dissipation | 0.6W |
| Standards/Approvals | RoHS, CSA, UL, TUV |
| Time to Trip | 1.2s |
| Hold Current | 0.9A |
| Minimum Resistance | 0.07Ω |
| Maximum Resistance | 180mΩ |
| Lead Orientation | Radial |
Key Features
- Automatically resets thousands of times without maintenance.
- Holds a current of 0.9 A and trips at 1.8 A for rapid circuit protection.
- Supports voltages up to 16V DC with power dissipation of 0.6 W.
- Operates reliably between -40°C and 60°C temperature range.
- Certified to UL, CSA, RoHS, and TUV safety and environmental standards.
- Maintenance-free design requires no fuse holder, improving installation efficiency.
- Suitable for security, automotive, medical, telecommunications, and power supply applications.
Product Description
Littelfuse RUSBF090 is a 0.9 ampere resettable fuse designed for electrical and electronic circuit protection applications. This radial lead PolySwitch™ PTC device quickly transitions from a low resistance state to a high resistance state upon detecting an electrical overload or short circuit, thereby protecting circuits from damage.
With a voltage rating of 16V DC and a trip current of 1.8 A, it efficiently safeguards power supplies and transformers, security systems, automotive electronics, medical devices, and telecommunications equipment.
The device features compact dimensions (7.4 mm length, 12.2 mm height, 3.1 mm width) and can dissipate up to 0.6 watts of power. It is engineered to operate reliably between -40°C and 60°C, ensuring durability in a wide range of environments.
Its automatic reset capability eliminates the need for fuse replacement, offering maintenance-free operation within equipment. The resettable fuse is UL, CSA, TUV, and RoHS certified, ensuring compliance with international safety and environmental standards.
Automatically resets itself thousands of times without replacement. Maintenance-free and compact design. Protection for power switching devices and instrumentation. Radial lead orientation facilitates easy PCB mounting. Supported by UL, CSA, RoHS, and TUV approvals.
Ideal for industrial, automotive, medical, telecommunications, and computer peripherals applications. This Littelfuse resettable fuse is supplied in a bag and packaged ready for insertion into machinery, aiding efficient assembly and production processes.
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Frequently Asked Questions
The hold current rating of this resettable fuse is 0.9 A.
The trip current for this model is 1.8 A.
It supports voltages up to 16V DC.
The dimensions are 7.4 mm in length, 12.2 mm in height, and 3.1 mm in width.
It operates reliably between -40°C and 60°C.
The maximum power dissipation is 0.6 W.
It is certified to UL, CSA, RoHS, and TUV safety and environmental standards.
The resettable fuse automatically resets itself thousands of times without the need for replacement, transitioning from high resistance back to low resistance after the overload condition is removed.
The minimum resistance is 0.07Ω and the maximum resistance is 180mΩ.
It features a radial lead orientation, facilitating easy PCB mounting.
This resettable fuse is suitable for applications in security, automotive, medical, telecommunications, and power supply systems.
The time to trip is 1.2 seconds.
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