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Product Detailed Parameters
- Description：ICL 2 OHM 20% 23A 31MM
- Series：BigAMP
- Mfr：Vishay Ametherm
- Package：Bulk
- R @ 25°C：2 Ohms
- Tolerance：±20%
- Current - Steady State Max：23 A
- R @ Current：20 mOhms
- Diameter：1.220" (31.00mm)
- Lead Spacing：0.307" (7.80mm)
- Grade：-
- Qualification：-
- Approval Agency：CSA
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Overview
The SL322R023B is a MegaSurge inrush current limiter manufactured by Vishay Ametherm. It features a nominal resistance of 2 Ohms with a tolerance of ±20%. The device supports a steady-state current rating of 23 A and operates within voltage ratings of 120 VAC, 240 VAC, and 480 VAC. It utilizes a radial leaded package with a diameter of 32 mm (1.220 inches). The component is designed for PCB mounting and complies with RoHS standards.
Feature Summary
- Provides effective limitation of high inrush currents during power-up sequences to protect downstream components.
- Utilizes negative temperature coefficient characteristics to automatically reduce resistance as the device heats up during operation.
- Features robust construction suitable for repeated thermal cycling associated with frequent switching applications.
Applications
- Protection circuits for power supplies operating at voltages up to 480VAC
- Industrial equipment requiring controlled initial current surge management
- Consumer electronics assemblies utilizing AC mains input stages
Procurement Notes
Verify that the specific suffix B aligns with the required packaging or marking specifications for your assembly process. Confirm that the 23 A steady-state current rating meets the operational requirements of the target circuit under all expected ambient temperature conditions. Ensure the 32 mm diameter fits within the designated PCB footprint constraints.
Selection Notes
Select this component when a 2 Ohm initial resistance is required to limit surge current to safe levels for sensitive loads. Consider the 23 A current rating against the maximum continuous load expected in the application. Evaluate the 32 mm physical size against available board space. Verify compatibility with the intended voltage environment, specifically noting support for 120, 240, and 480 VAC systems.
Part Context
This part belongs to the MegaSurge series of NTC thermistors from Vishay Ametherm. These devices are engineered specifically for inrush current limiting in electronic circuits. The series offers various resistance and current ratings to accommodate different power levels and voltage classes, providing a standardized solution for surge protection across diverse industrial and commercial applications.
Replacement Considerations
Direct substitutes include SL322R025 and SL322R023100. Verify that alternative part numbers match the 2 Ohm resistance value and 23 A current rating. Ensure physical dimensions and lead configurations remain compatible with existing PCB layouts before substitution.
FAQ
What is the steady-state current rating of the SL322R023B?
The steady-state current rating is 23 A.
Does this component support 480 VAC applications?
Yes, the SL322R023B is rated for use in circuits up to 480 VAC.
What is the nominal resistance value of this inrush current limiter?
The nominal resistance is 2 Ohms with a tolerance of ±20%.
