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« Back PDF (Print) 3.060 in. / 77.80 mm OD Toroid

MS - 306 125 - 2

Physical Dimensions
OD Bare Core Nominal 77.80 mm 3.063 in
Coated Core (max) 78.94 mm 3.108 in
ID Bare Core Nominal 39.34 mm 1.549 in
Coated Core (min) 38.34 mm 1.509 in
Ht Bare Core Nominal 25.85 mm 1.018 in
Coated Core (max) 26.85 mm 1.057 in
Magnetic Dimensions
Ae Effective Magnetic Cross Section 4.78 cm2
Le Effective Magnetic Path Length 17.0 cm 
Ve Effective Core Volume 81.5 cm3
WA Minimum Effective Window Area 11.5 cm2
SA Surface Area 211 cm2
MLT Mean Length Per Turn 11.3 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 Material Series
OC
Optimized Core Loss
OD
Optimized Core Loss
OE
Optimized Core Loss
14μ 47 MS-306014-2 MP-306014-2 FS-306014-2 HF-306014-2
26μ 88 MS-306026-2 SH-306026-2 MP-306026-2 FS-306026-2 HF-306026-2 OC-306026-2 OD-306026-2 OE-306026-2
40μ 135 MS-306040-2 FS-306040-2
60μ 205 MS-306060-2 SH-306060-2 MP-306060-2 FS-306060-2 HF-306060-2 OC-306060-2 OD-306060-2 OE-306060-2
75μ 255 MS-306075-2 FS-306075-2
90μ 306 MS-306090-2 FS-306090-2 OC-306090-2 OD-306090-2 OE-306090-2
125μ 425 MS-306125-2 SH-306125-2 MP-306125-2 HF-306125-2 OC-306125-2
147μ 500 MS-306147-2 MP-306147-2 HF-306147-2
160μ 544 MS-306160-2 MP-306160-2 HF-306160-2
Approx Unit Weight: 470 g 460 g 610 g 550 g 560 g 560 g 560 g 560 g
Test Conditions
Winding N=120, #18 AWG
Frequency 10 kHz
Voltage 2.5 V
AL Tolerance ±8%
Coating/Packaging Information
Coating Type Blue Epoxy
Voltage Breakdown 1000 Vrms
Unit 0.1 mA, 5 s
Package Quantity 27 Pcs/Box (18: MP, HF, OP)
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 30 38 47 60 75 94 118 147 184 229 286
Rdc(Ω) 7.0 m 14.1 m 27.7 m 56.3 m 111.9 m 223.1 m 445.5 m 882.6 m 1.8 3.5 6.9
Full
Winding
Turns 60 94 145 224 347 537 831 1,286 1,990 3,080 4,767
Rdc(Ω) 14.0 m 34.9 m 85.6 m 210.2 m 517.9 m 1.3 3.1 7.7 19.0 46.8 115.1