# Power materials

**For Power transformers:**

For frequency f<100 kHz

- N27 (µi = 2000) base power materials, low cost, hi-power
- N41 (µi = 2800) applied in current transformers

- N87 (µi = 2200) base power material
- N97 (µi = 2300) the lowest losses
- N95 (µi = 2000) low losses, flat temperature behavior, the dependence of core losses from temperature is close to linear
- N51 (µi = 3000) losses min. at 40°C

- N49 (µi = 1500)

**Output choke (high B**

_{sat}@ 100°C)**Ballast**

- N72 (µi = 2500) N72 (µi = 2500 ) low B
_{r}, near flat temperature behaviour

# Broadband

**Signal transformer (low THD)**

ADSL

- T57 (µi = 4000)

- M33 (µi = 750)

**Splitter (high B**

_{sat}@room temperature)- N45 (µi = 3800)

# Resonance circuit

**Filter coil (low tan d/µi, high Q, stable µi over T)**

f<100 kHz

- M33 (µi = 750)

- K1 (µi = 80)

# Proximity switch

Sensor coil (high and stable Q over T)

f<100 kHz

- N22: (µi = 2300)

- M33 (µi = 750)

- K1 (µi = 80)

# EMI

Current-compensated choke (high impedance)

- N30: (µi = 4300) extended frequency response
- T35: (µi = 6000) medium permeability
- T36: (µi = 7000) stable impedance over temperature
- T37: (µi = 6500) low tanδ/µ
_{i} - T38: (µi = 10000) high Inductance low η
_{B} - T65: (µi = 5200) high B
_{sat}and high T_{c} - T46: (µi = 15000) highest permeability

Data line choke (high data rate)

- M13: (µi = 2300) high frequency, high permeability
- K8: (µi = 860) highest frequency
- K10: (µi = 800) highest frequency