Bobbins (9677182208)

Part Number: 9677182208

77 BOBBIN 3PC. ASSEMBLY COATED

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. 

Catalog Drawing
3D Model

Weight: 14 (g)

Dimmmmm tolnominal inchinch misc.
A18.95Max0.746Max
B23.2Max0.913Max
D13.65Min0.538Min
F11.8Max0.464Max
G1.7Min0.067Min
H2.6Min0.103_

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)65 ±10%
AL min. @ Nl (At)55 - 410
N/AWG95/22
Aw(cm2)0.49 Min

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

Fair-Rite Products Corp.     One Commercial Row, Wallkill, New York 12589-0288
888-324-7748      845-895-2055      Fax: 845-895-2629      ferrites@fair-rite.com      www.fair-rite.com