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« Back PDF (Print) 1.060 in. / 26.90 mm OD Toroid

MS - 109 125 - 2

Physical Dimensions
OD Bare Core Nominal 26.92 mm 1.060 in
Coated Core (max) 27.81 mm 1.095 in
ID Bare Core Nominal 14.73 mm 0.580 in
Coated Core (min) 14.10 mm 0.555 in
Ht Bare Core Nominal 18.00 mm 0.709 in
Coated Core (max) 19.00 mm 0.748 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 1.01 cm2
Le Effective Magnetic Path Length 6.35 cm 
Ve Effective Core Volume 6.43 cm3
WA Minimum Effective Window Area 1.56 cm2
SA Surface Area 35.8 cm2
MLT Mean Length Per Turn 5.88 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 28 MS-109014-2 MP-109014-2 FS-109014-2 HF-109014-2 OP-109014-2
26μ 52 MS-109026-2 SH-109026-2 MP-109026-2 FS-109026-2 HF-109026-2 OP-109026-2
40μ 80 MS-109040-2 FS-109040-2 OP-109040-2
60μ 120 MS-109060-2 SH-109060-2 MP-109060-2 FS-109060-2 HF-109060-2 OP-109060-2
75μ 150 MS-109075-2 FS-109075-2 OP-109075-2
90μ 180 MS-109090-2 FS-109090-2 OP-109090-2
125μ 250 MS-109125-2 SH-109125-2 MP-109125-2 HF-109125-2 OP-109125-2
147μ 294 MS-109147-2 MP-109147-2 HF-109147-2
160μ 320 MS-109160-2 MP-109160-2 HF-109160-2
173μ 346 MP-109173-2
205μ 410 MP-109205-2
Approx Unit Weight: 37 g 36 g 48 g 44 g 44 g 43 g
Test Conditions
Winding N=80, #26 AWG
Frequency 10 kHz
Voltage 0.36 V
AL Tolerance ±8%
Coating/Packaging Information
Coating Type Blue Epoxy
Voltage Breakdown 1000 Vrms
Unit 0.1 mA, 5 s
Package Quantity 400 Pcs/Box
Winding Table
Wire Size AWG 10 12 14 16 18 20 22 24 26 28 30
mm 2.500 2.000 1.600 1.250 1.000 0.800 0.630 0.500 0.400 0.315 0.250
Single
Layer
Turns 12 16 20 26 33 41 52 66 82 103 129
Rdc(Ω) 2.3 m 4.9 m 9.7 m 20.1 m 40.6 m 80.2 m 161.7 m 326.4 m 644.9 m 1.3 2.6
Full
Winding
Turns 13 20 30 47 73 112 174 269 417 645 998
Rdc(Ω) 2.5 m 6.1 m 14.6 m 36.3 m 89.7 m 219.0 m 541.0 m 1.3 3.3 8.1 19.9