Shapes/Sizes Available

« Back PDF (Print) 0.155 in. / 3.94 mm OD Toroid

MS - 015 125 - 8

Physical Dimensions
OD Bare Core Nominal 3.94 mm 0.155 in
Coated Core (max) 4.14 mm 0.163 in
ID Bare Core Nominal 2.21 mm 0.087 in
Coated Core (min) 2.01 mm 0.079 in
Ht Bare Core Nominal 2.54 mm 0.100 in
Coated Core (max) 2.74 mm 0.108 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 0.0211 cm2
Le Effective Magnetic Path Length 0.942 cm 
Ve Effective Core Volume 0.0197 cm3
WA Minimum Effective Window Area 0.0316 cm2
SA Surface Area 0.776 cm2
MLT Mean Length Per Turn 0.862 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 4 MS-015014-8 MP-015014-8 FS-015014-8 HF-015014-8 OP-015014-8
26μ 7 MS-015026-8 SH-015026-8 MP-015026-8 FS-015026-8 HF-015026-8 OP-015026-8
40μ 11 MS-015040-8 FS-015040-8 OP-015040-8
60μ 17 MS-015060-8 SH-015060-8 MP-015060-8 FS-015060-8 HF-015060-8 OP-015060-8
75μ 21 MS-015075-8 FS-015075-8 OP-015075-8
90μ 25 MS-015090-8 FS-015090-8 OP-015090-8
125μ 35 MS-015125-8 SH-015125-8 MP-015125-8 HF-015125-8 OP-015125-8
147μ 41 MS-015147-8 MP-015147-8 HF-015147-8
160μ 45 MS-015160-8 MP-015160-8 HF-015160-8
173μ 48 MP-015173-8
205μ 57 MP-015205-8
Approx Unit Weight: 0.11 g 0.11 g 0.15 g 0.13 g 0.14 g 0.13 g
Test Conditions
Winding N=30, #32 AWG
Frequency 10 kHz
Voltage 0.003 V
AL Tolerance ±8% (±15% Super-MSS)
Coating/Packaging Information
Coating Type Parylene N
Voltage Breakdown 500 Vrms
Unit 0.1 mA, 5 s
Package Quantity 27,000 Pcs/Box
Winding Table
Wire Size AWG 28 30 32 34 36 38 40 42 44 - -
mm 0.315 0.250 0.200 0.160 0.125 0.100 0.080 0.063 0.050 - -
Single
Layer
Turns 12 16 21 26 33 42 53 67 84 - -
Rdc(Ω) 22.0 m 46.7 m 97.4 m 191.8 m 387.1 m 783.6 m 1.6 3.2 6.3 - -
Full
Winding
Turns 13 20 31 49 75 116 180 279 431 - -
Rdc(Ω) 23.8 m 58.3 m 143.8 m 361.4 m 879.8 m 2.2 5.3 13.2 32.3 - -