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« Back PDF (Print) 0.183 in. / 4.65 mm OD Toroid

MS - 018 125 - 8

Physical Dimensions
OD Bare Core Nominal 4.65 mm 0.183 in
Coated Core (max) 5.21 mm 0.205 in
ID Bare Core Nominal 2.36 mm 0.093 in
Coated Core (min) 1.93 mm 0.076 in
Ht Bare Core Nominal 2.54 mm 0.100 in
Coated Core (max) 3.30 mm 0.130 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 0.0285 cm2
Le Effective Magnetic Path Length 1.06 cm 
Ve Effective Core Volume 0.0302 cm3
WA Minimum Effective Window Area 0.0293 cm2
SA Surface Area 1.15 cm2
MLT Mean Length Per Turn 1.08 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 5 MS-018014-8 MP-018014-8 FS-018014-8 HF-018014-8 OP-018014-8
26μ 9 MS-018026-8 SH-018026-8 MP-018026-8 FS-018026-8 HF-018026-8 OP-018026-8
40μ 13 MS-018040-8 FS-018040-8 OP-018040-8
60μ 20 MS-018060-8 SH-018060-8 MP-018060-8 FS-018060-8 HF-018060-8 OP-018060-8
75μ 25 MS-018075-8 FS-018075-8 OP-018075-8
90μ 30 MS-018090-8 FS-018090-8 OP-018090-8
125μ 42 MS-018125-8 SH-018125-8 MP-018125-8 HF-018125-8 OP-018125-8
147μ 49 MS-018147-8 MP-018147-8 HF-018147-8
160μ 53 MS-018160-8 MP-018160-8 HF-018160-8
173μ 57 MP-018173-8
205μ 68 MP-018205-8
Approx Unit Weight: 0.17 g 0.17 g 0.22 g 0.21 g 0.21 g 0.20 g
Test Conditions
Winding N=30, #32 AWG
Frequency 10 kHz
Voltage 0.004 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 15 20 25 32 40 51 64 81 - -
Rdc(Ω) 27.7 m 55.1 m 116.8 m 232.1 m 472.6 m 939.5 m 1.9 3.8 7.7 - -
Full
Winding
Turns 12 19 29 45 69 107 166 257 398 - -
Rdc(Ω) 27.7 m 69.8 m 169.3 m 417.9 m 1.0 2.5 6.2 15.3 37.6 - -