80 Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
K, R, S, V & X Series
R. F. Molded Chokes
LD
1.438" ±0.188
36.525mm ±4.77
(Color coded in accordance with MIL-C-15305.)
Max. Max. Dielectric
Grade/ oper. temp. Ambient withstanding voltage Terminal
Series Construction Inductance Style Class temp. rise temp. (sea level) (reduced pressure) pull Altitude
K Phenolic 0.15–4.7 µH LT4 1/B 125°C 35°C 90°C 1000VRMS 200VRMS 5 lbs. 70,000 ft.
Powd. iron 0.56–1000 µHLT10 1/A 105°C 15°C " " " " "
R Phenolic 0.15–2.7 µH LT4 1/B 125°C 35°C 90°C 1000VRMS 200VRMS 5 lbs. 70,000 ft.
Powd. iron 3.3–27 µH LT10 1/A 105°C 15°C " " " " "
S, V 270– LT10 1/A 105°C 15°C 90°C 700VRMS 180VRMS 5 lbs. 70,000 ft.
& X 10,000 µH
STOCK PART NUMBERS
* For example, the MS designation for
KM150M is 18130-1
** Letter suffix on part number denotes toler-
ance: J=5%, K=10%, M=20%
18130–
KM150M –1 0.15 50 25 525 0.03 2450
KM220M –2 0.22 50 25 450 0.055 1900
KM330M –3 0.33 45 25 360 0.09 1400
KM470M –4 0.47 45 25 310 0.12 1225
KM560K –5 0.56 50 25 280 0.135 1220
KM680K –6 0.68 50 25 250 0.15 1100
KM820K –7 0.82 50 25 220 0.22 900
KM101K –8 1.00 50 25 200 0.29 830
KM121K –9 1.20 33 7.9 180 0.42 650
KM151K –10 1.50 33 7.9 160 0.50 600
KM181K –11 1.80 33 7.9 150 0.65 525
KM221K –12 2.20 33 7.9 135 0.95 435
KM271K –13 2.70 33 7.9 120 1.20 385
KM331K –14 3.30 33 7.9 110 2.00 300
KM391K –15 3.90 33 7.9 100 2.30 280
KM471K –16 4.70 33 7.9 90 2.60 260
14046–
KM561K –1 5.60 45 7.9 60 0.32 495
KM681K –2 6.80 50 7.9 55 0.50 395
KM821K –3 8.20 50 7.9 50 0.60 360
KM102K –4 10.00 55 7.9 45 0.90 290
KM122K –5 12.00 65 2.5 42 1.10 265
KM152K –6 15.00 65 2.5 40 1.40 240
KM182K –7 18.00 75 2.5 34 2.25 185
KM222K –8 22.00 75 2.5 30 2.50 175
KM272K –9 27.00 60 2.5 25 2.60 170
KM332K –10 33.00 65 2.5 19 3.00 165
90538–
KM362J –1 36.00 60 2.5 15.5 2.50 180
KM392J –2 39.00 60 2.5 14.5 2.60 176
KM432J –3 43.00 60 2.5 13.7 2.70 172
KM472J –4 47.00 55 2.5 13.0 2.75 170
KM512J –5 51.00 55 2.5 12.7 2.85 167
KM562J –6 56.00 55 2.5 12.0 3.00 164
KM622J –7 62.0 55 2.5 11.5 3.15 160
KM682J –8 68.0 55 2.5 11.0 3.30 156
KM752J –9 75.0 55 2.5 10.5 3.70 147
KM822J –10 82.0 50 2.5 10.3 3.90 143
KM912J –11 91.0 50 2.5 10.0 4.3 136
90538–
KM103J –12 100.0 50 2.5 9.5 4.50 133
KM113J –13 110.0 60 0.79 8.9 4.90 128
KM123J –14 120.0 65 0.79 8.7 5.20 124
KM133J –15 130.0 65 0.79 8.5 5.45 121
KM153J –16 150.0 65 0.79 8.0 6.05 114
KM163J –17 160.0 65 0.79 7.5 6.40 111
KM183J –18 180.0 65 0.79 7.0 6.75 108
KM203J –19 200.0 65 0.79 6.5 7.10 106
KM223J –20 220.0 65 0.79 6.2 7.45 103
KM243J –21 240.0 65 0.79 5.9 7.80 101
KM273J 270.0 65 0.79 5.7 11.0 85
KM303J 300.0 65 0.79 5.4 11.5 83
KM333J 330.0 65 0.79 5.1 12.0 81
KM363J 360.0 65 0.79 4.8 12.5 80
KM393J 390.0 65 0.79 4.5 16.3 70
KM433J 430.0 65 0.79 4.2 17.1 68
KM473J 470.0 65 0.79 3.9 17.9 67
KM513J 510.0 65 0.79 3.8 18.8 65
KM563J 560.0 65 0.79 3.7 19.5 64
KM623J 620.0 65 0.79 3.3 25.9 55
KM683J 680.0 65 0.79 3.1 27.2 54
KM753J 750.0 65 0.79 2.9 28.6 53
KM823J 820.0 65 0.79 2.7 30.0 52
KM913J 910.0 65 0.79 2.5 31.5 50
KM104J 1000.0 65 0.79 2.3 33.0 49
MS75008–
RM150M –21 0.15 55 25.0 510 0.030 3000
RM220M –22 0.22 50 25.0 415 0.035 2800
RM330M –23 0.33 50 25.0 350 0.065 2000
RM470M –24 0.47 50 25.0 300 0.085 1700
RM560K –25 0.56 50 25.0 270 0.125 1450
RM680K –26 0.68 45 25.0 250 0.150 1300
RM820K –27 0.82 40 25.0 210 0.205 1100
RM101K –28 1.00 40 25.0 200 0.290 930
RM121K –29 1.20 30 7.9 180 0.400 785
RM151K –30 1.50 30 7.9 170 0.485 700
RM181K –31 1.80 30 7.9 150 0.740 580
RM221K –32 2.20 30 7.9 140 0.970 505
RM271K –33 2.70 30 7.9 120 1.20 460
MS75101–
RM331K –1 3.30 30 7.9 70 0.140 990
RM391K –2 3.90 30 7.9 65 0.155 870
RM471K –3 4.70 30 7.9 60 0.210 745
RM561K –4 5.60 30 7.9 50 0.280 645
RM681K –5 6.80 30 7.9 50 0.375 560
RM821K –6 8.20 30 7.9 48 0.440 540
RM102K –7 10.00 30 7.9 42 0.605 440
MS75101–
RM122K –8 12.00 50 2.5 36 1.05 370
RM152K –9 15.00 55 2.5 30 1.20 310
RM182K –10 18.00 60 2.5 30 1.95 255
RM222K –11 22.00 60 2.5 24 2.20 240
RM272K –12 27.00 65 2.5 22 2.75 205
MS90539–
SM273J –1 270 65 0.79 5.6 8.2 110
SM303J –2 300 65 0.79 5.3 8.7 107
SM333J –3 330 65 0.79 5.0 9.1 105
SM363J –4 360 65 0.79 4.7 9.6 102
SM393J –5 390 65 0.79 4.5 10.0 100
SM433J –6 430 65 0.79 4.3 10.6 97
SM473J –7 470 65 0.79 4.0 11.1 95
SM513J –8 510 65 0.79 3.8 11.6 93
SM563J –9 560 65 0.79 3.6 12.3 91
SM623J –10 620 60 0.79 3.5 13.0 88
SM683J –11 680 60 0.79 3.4 13.7 85
SM753J –12 750 60 0.79 3.3 14.4 83
SM823J –13 820 60 0.79 3.1 15.1 81
SM913J –14 910 60 0.79 2.9 15.8 79
SM104J –15 1000 60 0.79 2.8 16.5 78
MS90540–
VM114J –1 1100 60 0.25 2.8 21.0 78
VM124J –2 1200 60 0.25 2.7 22.0 76
VM134J –3 1300 60 0.25 2.6 23.0 75
VM154J –4 1500 65 0.25 2.4 25.0 72
VM164J –5 1600 65 0.25 2.3 26.0 70
VM184J –6 1800 65 0.25 2.2 28.0 68
VM204J –7 2000 65 0.25 2.1 29.0 67
VM224J –8 2200 70 0.25 2.0 30.0 66
VM244J –9 2400 70 0.25 1.9 31.0 64
VM274J –10 2700 70 0.25 1.8 33.0 62
VM304J –11 3000 70 0.25 1.7 35.0 61
VM334J –12 3300 70 0.25 1.6 38.0 58
VM364J –13 3600 70 0.25 1.5 40.0 57
MS90541–
XM394J –1 3900 80 0.25 1.45 44.0 61
XM434J –2 4300 80 0.25 1.40 46.0 59
XM474J –3 4700 80 0.25 1.35 48.0 58
XM504J –4 5000 80 0.25 1.30 50.0 57
XM564J –5 5600 80 0.25 1.25 53.0 56
XM624J –6 6200 80 0.25 1.20 56.0 54
XM684J –7 6800 80 0.25 1.15 59.0 52
XM754J –8 7500 80 0.25 1.10 62.0 51
XM824J –9 8200 80 0.25 1.05 65.0 50
XM914J –10 9100 80 0.25 1.00 68.0 49
XM105J –11 10000 80 0.25 0.95 72.0 47
Part
number
Inductance*
(µH)
Q min.
Test frequency
(L & Q, MHz)
SRF min.
(MHz)
DCR max.
(Ω)
Rated DC
current (mA)
MS part
designation*
Part
number
Inductance*
(µH)
Q min.
Test frequency
(L & Q, MHz)
SRF min.
(MHz)
DCR max.
(Ω)
Rated DC
current (mA)
MS part
designation*
Part
number
Inductance*
(µH)
Q min.
Test frequency
(L & Q, MHz)
SRF min.
(MHz)
DCR max.
(Ω)
Rated DC
current (mA)
MS part
designation*
Dimensions (in. / mm)
Series Length Diameter AWG
K0.375 ± 0.010 0.156 ± 0.010 22
9.525 ± 0.25 3.962 ± 0.25
R0.438 ± 0.010 0.188 ±0.010 22
11.125 ± 0.25 4.775 ± 0.25
S0.440 ± 0.010 0.190 ± 0.010 22
4.917 ± 0.25 4.826 ± 0.25
V0.560 ± 0.010 0.215 ± 0.010 22
14.224 ± 0.25 5.461 ± 0.25
X0.740 ± 0.010 0.240 ± 0.010 20
18.796 ± 0.25 6.096 ± 0.25
