Click here for product information pb rohs_mat rohs_comp  msds

Rods (4078375111)

Part Number: 4078375111
78 ROD
Medium Permeability, 77 (ui=2000) & 78 (ui=2300) materials
Inductive Components
Open Magnetic Circuit
Printer Friendly Data Sheet
Check Stock

Part Number: 4078375111

78 ROD

Explanation of Part Numbers:
– Digits 1 & 2 = Product Class
– Digits 3 & 4 = Material Grade

Pressed Fair-Rite rods are used extensively in high-energy storage designs.

These rods can also be used for inductive components that require temperature stability or have to accommodate large dc bias requirements.

Figure 2 rods have a 0.6 mm (0.024”) maximum chamfer on the end faces.

For frequency tuned rod designs see section “Antenna/RFID Rods”.

•For any rod requirement not listed here, feel free to contact our customer service group for availability and pricing.

The “A” dimension can be centerless ground to tighter tolerances.

Weight: 13 (g)

Dimmmmm tolnominal inchinch misc.

A MnZn ferrite specifically designed for power applications for frequencies up to 200 kHz and low loss inductive applications to 500 kHz.

Available in 78 material:



Mated Parts

78 Material Characteristics
Property Unit Symbol Value
Initial Permeability @ B < 10 gauss µi 2300
Flux Density @ Field Strength Gauss
Residual Flux Density Gauss Br 1500
Coercive Force Oersted Hc 0.20
Loss Factor @ Frequency 10 -6
Tan δ/ µi 4.5
Temperature Coefficient of Initial Permeability (20 -70°C) %/°C 1.0
Curie Temperature °C Tc >200
Resistivity ohm-cm ρ 200

**** Characteristic curves are measured on standard Toroids (18/10/6 mm)  at 25°C and 10 kHz unless otherwise indicated. Impedance characteristics are measured on standard shield beads (3.5/1.3/6.0 mm) unless otherwise indicated.

Ferrite Material Constants

Specific Heat
0.25 cal/g/°C
Thermal Conductivity
3.5 - 4.5 mW/cm-°C
Coefficient of Linear Expansion
8 - 10x10-6/°C
Tensile Strength
4.9 kgf/mm2
Compressive Strength
42 kgf/mm2
Young's Modulus
15x103 kgf/mm2
Hardness (Knoop)
Specific Gravity
≈4.7 g/cm3
The above quoted properties are typical for Fair-Rite MnZn and NiZn ferrites.

Printer Friendly Data Sheet - Download as pdf file