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« Back PDF (Print) 1.300 in. / 33.00 mm OD Toroid

MS - 131 125 - 2

Physical Dimensions
OD Bare Core Nominal 33.02 mm 1.300 in
Coated Core (max) 33.83 mm 1.332 in
ID Bare Core Nominal 19.94 mm 0.785 in
Coated Core (min) 19.30 mm 0.760 in
Ht Bare Core Nominal 8.76 mm 0.345 in
Coated Core (max) 9.70 mm 0.382 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 0.551 cm2
Le Effective Magnetic Path Length 8.15 cm 
Ve Effective Core Volume 4.49 cm3
WA Minimum Effective Window Area 2.93 cm2
SA Surface Area 37.8 cm2
MLT Mean Length Per Turn 4.36 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 11.9 MS-131014-2 MP-131014-2 FS-131014-2 HF-131014-2 OP-131014-2
26μ 22.1 MS-131026-2 SH-131026-2 MP-131026-2 FS-131026-2 HF-131026-2 OP-131026-2
40μ 34 MS-131040-2 FS-131040-2 OP-131040-2
60μ 51 MS-131060-2 SH-131060-2 MP-131060-2 FS-131060-2 HF-131060-2 OP-131060-2
75μ 63.8 MS-131075-2 FS-131075-2 OP-131075-2
90μ 76.5 MS-131090-2 FS-131090-2 OP-131090-2
125μ 109 MS-131125-2 SH-131125-2 MP-131125-2 HF-131125-2 OP-131125-2
147μ 129 MS-131147-2 MP-131147-2 HF-131147-2
160μ 136 MS-131160-2 MP-131160-2 HF-131160-2
173μ 151 MP-131173-2
205μ 180 MP-131205-2
Approx Unit Weight: 26 g 25 g 33 g 31 g 31 g 30 g
Test Conditions
Winding N=70, #22 AWG
Frequency 10 kHz
Voltage 0.17 V
AL Tolerance ±8%
Coating/Packaging Information
Coating Type Blue Epoxy
Voltage Breakdown 1000 Vrms
Unit 0.1 mA, 5 s
Package Quantity 576 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 14 18 22 29 36 46 58 73 91 114 142
Rdc(Ω) 1.3 m 2.6 m 5.0 m 10.5 m 20.6 m 41.9 m 84.1 m 168.3 m 333.7 m 664.9 m 1.3
Full
Winding
Turns 15 24 37 57 88 136 211 326 504 780 1,208
Rdc(Ω) 1.3 m 3.4 m 8.4 m 20.5 m 50.4 m 124.0 m 305.9 m 751.8 m 1.8 4.5 11.2