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« Back PDF (Print) 7.750 in. / 197.00 mm OD Toroid

MS - 775 125 - 2

Physical Dimensions
OD Bare Core Nominal 196.85 mm 7.750 in
Coated Core (max) 198.37 mm 7.810 in
ID Bare Core Nominal 146.05 mm 5.750 in
Coated Core (min) 144.53 mm 5.690 in
Ht Bare Core Nominal 25.40 mm 1.000 in
Coated Core (max) 26.92 mm 1.060 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 6.26 cm2
Le Effective Magnetic Path Length 53.9 cm 
Ve Effective Core Volume 337 cm3
WA Minimum Effective Window Area 164 cm2
SA Surface Area 1140 cm2
MLT Mean Length Per Turn 18.0 cm 
Permeability Part Numbers
Reference
Permeability
AL Value
(nH/N2)
MS
Sendust
SH
High Freq. Sendust
MPP
Molypermalloy
FluxSan
Silicon Iron
Hi-Flux
Nickle Iron
Optilloy
Optimized Alloy
14μ 20.5 MS-775014-2 FS-775014-2 OP-775014-2
26μ 38 MS-775026-2 FS-775026-2 OP-775026-2
40μ 58.5 MS-775040-2
60μ 88 MS-775060-2 FS-775060-2 OP-775060-2
Approx Unit Weight: 1,948 g 1,883 g 2,511 g 2,292 g 2,315 g 2,238 g
Test Conditions
Winding N=100, #18 AWG
Frequency 10 kHz
Voltage 2.8 V
AL Tolerance ±8%
Coating/Packaging Information
Coating Type Blue Epoxy
Voltage Breakdown 1000 Vrms
Unit 0.1 mA, 5 s
Package Quantity 3 Pcs/Box
Winding Table
Wire Size AWG 8 10 12 14 16 18 20 22 24 26 28
mm 3.150 2.500 2.000 1.600 1.250 1.000 0.800 0.630 0.500 0.400 0.315
Single
Layer
Turns 120 150 187 233 291 362 451 562 700 872 1085
Rdc(Ω) 44.4 m 88.3 m 175.0 m 346.8 m 688.9 m 1.4 2.7 5.4 10.6 21.0 41.6
Full
Winding
Turns 859 1,329 2,057 3,184 4,928 7,627 11,804 18,270 28,277 43,766 67,739
Rdc(Ω) 317.8 m 782.1 m 1.9 4.7 11.7 28.7 70.7 174.0 428.2 1.1 k 2.6 k