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Bobbins (9843000104)

Part Number: 9843000104
43 BOBBIN RECTANGULAR
High Frequency Designs
Inductive Components
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Bobbins

Part Number: 9843000104

43 BOBBIN RECTANGULAR

Explanation of Part Numbers:
– Digits 1 & 2 = Product Class
– Digits 3 & 4 = Material Grade
•– Last digit 8 = Coated Bobbin

Bobbins are an economical and well-proven core design for many applications where relatively low but stable inductance values are required.

For higher frequency designs, use small bobbins in 43 material.
•
For power applications, bobbins in 77 material are specified for AL and dc bias limits.

Bobbins in Figures 2-5 can be supplied with a uniform thermo-set plastic coating which can withstand a minimum breakdown of 500Vrms. This coating will change the dimensions a maximum of 0.5 mm (0.020″). The last digit of the thermo-set plastic coated part is an “8”.

•For any bobbin requirement not listed in the catalog, please contact our customer service group for availability and pricing. 

Weight: 3 (g)

Dimmmmm tolnominal inchinch misc.
A8.05±0.200.317_
B19±0.400.75_
D12.7±0.250.5_
F5.55+0.250.225_
G2.7+0.250.111_
H8.05±0.200.317_

Chart Legend
AL :  Inductance Factor   ,   Nl : Value of dc Ampere-turns,    AW:Winding Area,
N/AWG : Number of Turns/Wire Size for Test Coil

Electrical Properties
AL(nH)38.0 ±10%
N/AWG50/28
Aw(cm2)0.33

Bobbins are tested for AL value at 1kHz < 10 gauss.

This NiZn is our most popular ferrite for suppression of conducted EMI from 20 MHz to 250 MHz. This material is also used for inductive applications such as high frequency common-mode chokes.

Available in 43 material:
EMI Suppression Beads
Beads On Leads
SM beads
Multi-Aperture Cores
Round Cable EMI Suppression Cores
Round Cable Snap-Its
Flat Cable EMI Suppression Cores
Flat Cable Snap-Its
Miscellaneous Suppression Cores
Bobbins
Toroids

43 Material Characteristics
Property Unit Symbol Value
Initial Permeability@ B < 10 gauss µi 800
Flux Density @ Field Strength Gauss
Oersted
B
H
2900
10
Residual Flux Density Gauss Br 1300
Coercive Force Oersted Hc 0.45
Loss Factor @ Frequency 10 -6
MHz
Tan δ/ µi 250
1.0
Temperature Coefficient of Initial Permeability (20 -70°C) %/°C 1.25
Curie Temperature °C Tc >130
Resistivity ohm-cm ρ 1×105

**** 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)
650
Specific Gravity
≈4.7 g/cm3
The above quoted properties are typical for Fair-Rite MnZn and NiZn ferrites.


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