Chang Sung Corp (CSC)
	Powder Cores Overview
Documentation:  CSC Complete Catalog 2006 CSC Powder Cores Overview CSC Powder Cores Selection Guide CSC Normal Mag Curves CSC Perm vs. DC Bias CSC Perm vs. Frequency CSC Perm vs. AC Flux Density CSC Temperature Stability CSC Thermal Stability Selection Guides: MPP  High Flux  Sendust  Mega Flux

Powder cores are distributed air gap cores made from ferrous alloy powders for low losses at high frequencies. Small air gaps distributed evenly throughout the cores increase the amount of DC that can be passed though the winding before core saturation occurs. Molybdenum permalloy powder (MPP) cores are excellent as low loss inductors for switch-mode power supplies, switching regulators and noise filters. High Flux and Sendust powder cores are better choice for the power factor correction (PFC), switching regulator inductors, in-line noise filters, pulse and flyback transformers, and many other application required for low losses at high frequencies.

Powder Core Descriptions

MH&W International offers many types of soft magnetic powder cores of the Molybdenum Permalloy(MPP), High Flux, Sendust and the new Mega Flux core materials, which are mainly used for inductors and transformers requiring the low losses and inductance stability under high DC bias conditions. The fully standardized production under strict quality controll from raw materials (nickel, iron, molybdenum, aluminum and silicon) to finished products enables MH&W to reduce the variations in product quality making it possible to maintain a guaranteed level of quality.

	MPP	High Flux	Sendust	Mega Flux
Materials	Ni-Fe-Mo alloy	Ni-Fe alloy	Fe-Si-Al alloy	Fe-Si alloy
Color	Yellow	Green	Blue	-
Finish	Epoxy, Parylene-C, Plastic Case
Sizes	From 3.5mm OD to 77.8mm OD
Permeabilities (µ)	26, 60, 125, 147, 160, 173, 200	26, 60, 125, 147,160	26, 60, 75, 90, 125	-
Break-Down Voltage	500V min.	500V min.	500V min.	-
Magnetic Characteristics	Relatively high saturation flux density Low residual flux density Excellent temperature stability Low core losses Excellent inductance stability under high DC bias conditions	Highest biasing capability High saturation flux density of 15,000G compared to 7,000G for MPP and 10,000G for Sendust Relatively low core losses	Core losses significantly lower than powdered iron Good DC bias characteristics Cost between powdered iron and MPP	Bsat : 1.6 Tesla High energy storage capacity Low core losses compared to Fe-Si Laminations Low relative cost Block assembly available Good candidate for high-end applicationsP
Major Applications	Direct current output inductors for SMPS High Q filters Loading coils EMI/RFI filters Many other precision applications	Power factor correction(PFC) circuits Switching regulator inductors In-line noise filters Pulse and flyback transformers	Power factor correction(PFC) circuits Switching regulator inductors In-line noise filiters Pulse and flyback transformers	Output Chokes Line filters PFC reactors Flyback transformers Examples: - VRM cores for PC - DC-AC reactor for renewable & alternative energy - DC-AC reactor for industrial & military demands - Boosting coil for (Hybrid) electric vehicles