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« Back PDF (Print) 1.840 in. / 46.70 mm OD Toroid

MS - 185 125 - 2

Physical Dimensions
OD Bare Core Nominal 46.74 mm 1.840 in
Coated Core (max) 47.63 mm 1.875 in
ID Bare Core Nominal 28.70 mm 1.130 in
Coated Core (min) 27.89 mm 1.098 in
Ht Bare Core Nominal 15.24 mm 0.600 in
Coated Core (max) 16.13 mm 0.635 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 1.34 cm2
Le Effective Magnetic Path Length 11.6 cm 
Ve Effective Core Volume 15.6 cm3
WA Minimum Effective Window Area 6.11 cm2
SA Surface Area 79.6 cm2
MLT Mean Length Per Turn 6.59 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 MS-185014-2 MP-185014-2 FS-185014-2 HF-185014-2 OP-185014-2
26μ 37 MS-185026-2 SH-185026-2 MP-185026-2 FS-185026-2 HF-185026-2 OP-185026-2
40μ 57 MS-185040-2 FS-185040-2 OP-185040-2
60μ 86 MS-185060-2 SH-185060-2 MP-185060-2 FS-185060-2 HF-185060-2 OP-185060-2
75μ 107 MS-185075-2 FS-185075-2 OP-185075-2
90μ 128 MS-185090-2 FS-185090-2 OP-185090-2
125μ 178 MS-185125-2 SH-185125-2 MP-185125-2 HF-185125-2 OP-185125-2
147μ 210 MS-185147-2 MP-185147-2 HF-185147-2
160μ 228 MS-185160-2 MP-185160-2 HF-185160-2
173μ 246 MP-185173-2
205μ 292 MP-185205-2
Approx Unit Weight: 90 g 87 g 116 g 106 g 107 g 104 g
Test Conditions
Winding N=80, #20 AWG
Frequency 10 kHz
Voltage 0.48 V
AL Tolerance ±8%
Coating/Packaging Information
Coating Type Blue Epoxy
Voltage Breakdown 1000 Vrms
Unit 0.1 mA, 5 s
Package Quantity 125 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 21 27 34 43 54 68 85 106 133 166 207
Rdc(Ω) 2.8 m 5.8 m 11.7 m 23.5 m 46.8 m 93.8 m 186.5 m 369.9 m 738.1 m 1.5 2.9
Full
Winding
Turns 32 49 77 119 184 284 440 680 1,053 1,630 2,523
Rdc(Ω) 4.3 m 10.6 m 26.4 m 64.9 m 159.6 m 391.8 m 965.4 m 2.4 5.8 14.4 35.4