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Product Detailed Parameters
- Description：ICL 8 OHM 20% 1A 10.92MM
- Series：ST
- Mfr：Littelfuse Inc.
- Package：Bulk
- R @ 25°C：8 Ohms
- Tolerance：±20%
- Current - Steady State Max：1:00 AM
- R @ Current：500 mOhms
- Diameter：0.430" (10.92mm)
- Lead Spacing：0.200" (5.08mm)
- Grade：-
- Qualification：-
- Approval Agency：-
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Overview
The ST8R001B is an inrush current limiter manufactured by Littelfuse Inc. It features a nominal resistance of 8 Ohms with a tolerance of ±20%. The device supports a maximum steady-state current of 1 A and has a physical diameter of 0.430 inches (10.92mm).
Feature Summary
- Provides circuit protection against high initial surge currents during power-up.
- Utilizes positive temperature coefficient characteristics to limit current flow.
- Designed for automatic reset functionality after fault conditions clear.
Applications
- Power supply input stages
- Electronic equipment surge protection
- Consumer appliance circuit boards
Procurement Notes
Verify the specific datasheet version from Littelfuse Inc. to confirm thermal and electrical ratings. Ensure the application environment does not exceed the specified steady-state current limits. Check for RoHS compliance requirements if applicable to your manufacturing standards. Confirm package type matches the radial lead configuration described in official documentation.
Selection Notes
Select this component when designing circuits requiring passive inrush current limiting without active control. Consider the 8 Ohm initial resistance value relative to the load impedance. Evaluate the 1 A continuous current rating against peak operational loads. Ensure the physical size fits within the available PCB area constraints.
Part Context
This part belongs to the ST8 series of inrush current limiters, which are thermistors designed to protect electronic components from damage caused by excessive current during startup. These devices are commonly used in various consumer and industrial electronics to extend component lifespan.
Replacement Considerations
Consult Littelfuse Inc. official substitution guides for compatible alternatives. Verify that any substitute maintains identical resistance values and current ratings. Ensure mechanical dimensions match the existing footprint to avoid rework.
FAQ
What is the nominal resistance of the ST8R001B?
The nominal resistance is 8 Ohms at 25°C.
What is the maximum steady-state current rating?
The maximum steady-state current is 1 A.
