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Product Detailed Parameters
- Description：ICL 220 OHM 20% 2A 15MM
- Series：S234
- Mfr：EPCOS - TDK Electronics
- Package：Bulk
- R @ 25°C：220 Ohms
- Tolerance：±20%
- Current - Steady State Max：2:00 AM
- R @ Current：-
- Diameter：0.591" (15.00mm)
- Lead Spacing：0.295" (7.50mm)
- Grade：-
- Qualification：-
- Approval Agency：UL
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Overview
The B57234S0221M000 is an NTC thermistor from the S234 series, designed for inrush current limiting. It features a nominal resistance of 220 Ohms at 25°C and a Beta value of 3900 K. The component utilizes leaded termination for through-hole mounting. Its primary function is to restrict initial surge currents during power-up phases in electronic circuits, ensuring stable operation and protecting downstream components from thermal stress caused by high inrush events.
Feature Summary
- Provides effective inrush current limitation during circuit startup
- Utilizes negative temperature coefficient characteristics for self-regulating resistance
- Designed for reliable protection against thermal stress in power applications
Applications
- Inrush current limiting in consumer electronics power supplies
- Surge protection in industrial control systems
- Component protection in automotive electronic modules
Procurement Notes
Verify the specific ordering code B57234S0221M000 against official TDK documentation to confirm the exact resistance tolerance and beta value specifications. Ensure that the selected variant matches the required thermal and electrical parameters for the target application circuit design.
Selection Notes
Select this component based on its 220 Ohm nominal resistance and 3900 K Beta value to match the specific inrush current requirements of the application. Consider the physical package type and lead configuration to ensure compatibility with the intended PCB layout and mounting process.
Part Context
This part belongs to the EPCOS S234 series of NTC thermistors, now manufactured under the TDK brand. The series focuses on providing robust inrush current limiting solutions for various electronic markets, including consumer, industrial, and automotive sectors, emphasizing reliability and performance.
Replacement Considerations
Consult official TDK cross-reference lists for verified substitutes. Generic equivalents may not match the precise Beta value or resistance tolerance required for accurate inrush limiting performance.
