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« Back PDF (Print) 2.250 in. / 57.20 mm OD Toroid

MS - 225 125 - 2

Physical Dimensions
OD Bare Core Nominal 57.15 mm 2.250 in
Coated Core (max) 58.04 mm 2.285 in
ID Bare Core Nominal 35.56 mm 1.400 in
Coated Core (min) 34.75 mm 1.368 in
Ht Bare Core Nominal 13.97 mm 0.550 in
Coated Core (max) 14.86 mm 0.585 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 1.44 cm2
Le Effective Magnetic Path Length 14.3 cm 
Ve Effective Core Volume 20.7 cm3
WA Minimum Effective Window Area 9.48 cm2
SA Surface Area 109 cm2
MLT Mean Length Per Turn 7.04 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 18 MS-225014-2 MP-225014-2 FS-225014-2 HF-225014-2 OP-225014-2
26μ 33 MS-225026-2 SH-225026-2 MP-225026-2 FS-225026-2 HF-225026-2 OP-225026-2
40μ 50 MS-225040-2 FS-225040-2 OP-225040-2
60μ 75 MS-225060-2 SH-225060-2 MP-225060-2 FS-225060-2 HF-225060-2 OP-225060-2
75μ 94 MS-225075-2 FS-225075-2 OP-225075-2
90μ 112 MS-225090-2 FS-225090-2 OP-225090-2
125μ 156 MS-225125-2 SH-225125-2 MP-225125-2 HF-225125-2 OP-225125-2
147μ 185 MS-225147-2 MP-225147-2 HF-225147-2
160μ 200 MS-225160-2 MP-225160-2 HF-225160-2
173μ 218 MP-225173-2
205μ 259 MP-225205-2
Approx Unit Weight: 120 g 116 g 154 g 141 g 142 g 137 g
Test Conditions
Winding N=80, #18 AWG
Frequency 10 kHz
Voltage 0.51 V
AL Tolerance ±8%
Coating/Packaging Information
Coating Type Blue Epoxy
Voltage Breakdown 1000 Vrms
Unit 0.1 mA, 5 s
Package Quantity 80 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 27 34 43 54 68 85 106 133 166 207 259
Rdc(Ω) 3.9 m 7.8 m 15.7 m 31.4 m 63.0 m 125.2 m 248.2 m 495.3 m 983.2 m 1.9 3.9
Full
Winding
Turns 50 77 119 184 285 441 682 1,056 1,635 2,530 3,916
Rdc(Ω) 7.2 m 17.7 m 43.6 m 107.1 m 263.9 m 649.4 m 1.6 3.9 9.7 23.8 58.7