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« Back PDF (Print) 2.920 in. / 74.10 mm OD Toroid

MS - 292 125 - 2

Physical Dimensions
OD Bare Core Nominal 74.10 mm 2.917 in
Coated Core (max) 75.20 mm 2.961 in
ID Bare Core Nominal 45.30 mm 1.783 in
Coated Core (min) 44.10 mm 1.736 in
Ht Bare Core Nominal 35.00 mm 1.378 in
Coated Core (max) 36.20 mm 1.425 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 4.94 cm2
Le Effective Magnetic Path Length 18.4 cm 
Ve Effective Core Volume 90.9 cm3
WA Minimum Effective Window Area 15.3 cm2
SA Surface Area 228 cm2
MLT Mean Length Per Turn 12.6 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 48 MS-292014-2 MP-292014-2 FS-292014-2 HF-292014-2 OP-292014-2
26μ 89 MS-292026-2 SH-292026-2 MP-292026-2 FS-292026-2 HF-292026-2 OP-292026-2
40μ 137 MS-292040-2 FS-292040-2 OP-292040-2
60μ 206 MS-292060-2 SH-292060-2 MP-292060-2 FS-292060-2 HF-292060-2 OP-292060-2
75μ 257 MS-292075-2 FS-292075-2 OP-292075-2
90μ 309 MS-292090-2 FS-292090-2 OP-292090-2
125μ 429 MS-292125-2 SH-292125-2 MP-292125-2 HF-292125-2 OP-292125-2
147μ 505 MS-292147-2
160μ 549 MS-292160-2
Approx Unit Weight: 525 g 508 g 677 g 618 g 624 g 604 g
Test Conditions
Winding N=100, #18 AWG
Frequency 10 kHz
Voltage 2.2 V
AL Tolerance ±8%
Coating/Packaging Information
Coating Type Blue Epoxy
Voltage Breakdown 1000 Vrms
Unit 0.1 mA, 5 s
Package Quantity 18 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 35 44 55 69 87 109 136 170 212 264 329
Rdc(Ω) 9.0 m 18.1 m 35.9 m 71.7 m 143.7 m 286.3 m 568.1 m 1.1 2.2 4.4 8.8
Full
Winding
Turns 80 124 192 296 459 710 1,099 1,701 2,633 4,075 6,307
Rdc(Ω) 20.7 m 50.9 m 125.4 m 307.4 m 758.0 m 1.9 4.6 11.3 27.8 68.5 168.5