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« Back PDF (Print) 3.500 in. / 88.90 mm OD Toroid

MS - 350 125 - 2

Physical Dimensions
OD Bare Core Nominal 88.85 mm 3.498 in
Coated Core (max) 90.00 mm 3.543 in
ID Bare Core Nominal 66.01 mm 2.599 in
Coated Core (min) 64.74 mm 2.549 in
Ht Bare Core Nominal 15.93 mm 0.627 in
Coated Core (max) 17.20 mm 0.677 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 1.83 cm2
Le Effective Magnetic Path Length 24 cm 
Ve Effective Core Volume 43.9 cm3
WA Minimum Effective Window Area 32.9 cm2
SA Surface Area 251 cm2
MLT Mean Length Per Turn 9.20 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 13 MS-350014-2 MP-350014-2 FS-350014-2 HF-350014-2 OP-350014-2
26μ 24 MS-350026-2 SH-350026-2 MP-350026-2 FS-350026-2 HF-350026-2 OP-350026-2
40μ 38 MS-350040-2 FS-350040-2 OP-350040-2
60μ 57 MS-350060-2 SH-350060-2 MP-350060-2 FS-350060-2 HF-350060-2 OP-350060-2
75μ 72 MS-350075-2 FS-350075-2 OP-350075-2
90μ 86 MS-350090-2 FS-350090-2 OP-350090-2
125μ 120 MS-350125-2 SH-350125-2 MP-350125-2 HF-350125-2 OP-350125-2
147μ 141 MS-350147-2 MP-350147-2 HF-350147-2
160μ 153 MS-350160-2 MP-350160-2 HF-350160-2
173μ 166 MP-350173-2
205μ 196 MP-350205-2
Approx Unit Weight: 254 g 245 g 327 g 299 g 302 g 291 g
Test Conditions
Winding N=100, #18 AWG
Frequency 10 kHz
Voltage 0.81 V
AL Tolerance ±8%
Coating/Packaging Information
Coating Type Blue Epoxy
Voltage Breakdown 1000 Vrms
Unit 0.1 mA, 5 s
Package Quantity 45 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 52 65 82 103 129 161 201 250 312 389 485
Rdc(Ω) 9.8 m 19.6 m 39.2 m 78.4 m 156.2 m 310.0 m 615.5 m 1.2 2.4 4.8 9.5
Full
Winding
Turns 172 267 413 639 989 1,530 2,369 3,666 5,674 8,782 13,592
Rdc(Ω) 32.5 m 80.4 m 197.7 m 486.4 m 1.2 2.9 7.3 17.9 43.9 108.2 266.3