B84312C0030J303

Power Line Filter Modules Overview

The B84312C0030J303 is a power line filter from the TDK EPCOS HEMP-Control-line series, designed for electromagnetic interference suppression in automotive applications. It features a compact form factor with dimensions of 17.50mm maximum width, 8.60mm maximum thickness, and 23.00mm maximum height. The component operates at a maximum AC voltage of 300Vrms and a DC voltage of 385V. It provides significant surge protection capabilities, handling a nominal discharge current of 3kA (8/20µs, 15 times) and a maximum surge current of 6kA (8/20µs, 1 time). The unit absorbs up to 125J of energy and exhibits a typical capacitance of 400pF.

Power Line Filter Modules Feature Summary

• Integrated high-energy absorption capability for robust transient voltage suppression
• Low parasitic capacitance design suitable for sensitive signal integrity preservation
• Automotive-grade construction compliant with HEMP (High-Intensity Electromagnetic Radiation Protection) standards

Power Line Filter Modules Applications

• HEMP protection circuits in automotive electronic control units
• Power line filtering for vehicle communication interfaces
• Surge suppression in automotive sensor modules

Power Line Filter Modules Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to ensure correct tolerance and packaging specifications. Confirm RoHS compliance status and any recent Product Change Notifications (PCN) prior to procurement. Ensure the component meets the required AEC-Q200 qualification if mandated by the specific application environment.

Power Line Filter Modules Selection Notes

Select this component when designing circuits requiring certified HEMP protection for automotive power lines. Evaluate the 300Vrms rating against peak system voltages to ensure adequate margin. Consider the 400pF capacitance value to verify it does not interfere with high-speed data transmission requirements on the protected lines.

Power Line Filter Modules Part Context

This part belongs to the B84312C series of power line filters manufactured by TDK EPCOS. The series is specifically engineered for automotive electronics to withstand high-intensity electromagnetic radiation events. These components serve as critical protection devices in modern vehicles to maintain functionality during electromagnetic disturbances.

Power Line Filter Modules Replacement Considerations

Consult official TDK EPCOS substitution guides for verified equivalents. Cross-reference must match voltage ratings, energy absorption capacity, and physical footprint. Generic industrial filters may lack the specific HEMP certification required for automotive compliance.