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CMT3-4-R
COMMON MODE CHOKES - FILTERS 1.3 M
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: EATON / PARTNER STOCK
- Product type: Radial Leaded Common Mode Chokes / Filters
- SVHC: To Be Advised
- DC Resistance Max: 0.032ohm
- Operating Temperature Max: 125°C
- Operating Temperature Min: -40°C
| Delivery and price | |
|---|---|
| Units per pack | 24 |
| Price | 11.8 € |
| Current stock | 1000+ |
| Lead time | 30 days |
Datasheet
Effective October 2015 Supersedes March 2007 **==> picture [121 x 11] intentionally omitted <==** **----- Start of picture text -----**<br> Technical Data 4312<br>**----- End of picture text -----**<br> ## CMT Common mode inductors, through-hole ## **Applications** **==> picture [479 x 362] intentionally omitted <==** **----- Start of picture text -----**<br> • Protects AC input from effects of switching<br>regulators<br>• Off-line power supplies<br>• EMI filters<br>• DC-DC converters<br>• Computer, TV, audio and office equipment<br>TS)<br>‘ua Mi Environmental data<br>• Storage temperature range (component):<br>-40°C to +125°C<br>Product description<br>• Operating temperature range: -40°C to +125°C<br>• Four sizes of through-hole off-line common (ambient + self-temperature rise).<br>mode inductors<br>• Inductance range from 0.53 - 66 mH<br>• Current range up to 6.5 Amps Pb<br>• Noise attenuation up to 68 dB<br>• Frequency range up to 6 MHz<br>• Meets UL94V-0 flammability standard<br>• Ferrite core material<br>Discontinued, Effective<br>March 1, 2016 or until<br>inventory is depleted.<br>No recommended<br>replacement available<br>**----- End of picture text -----**<br> CMT Technical Data 4312 Effective October 2015 Common mode inductors, through-hole ## **Product specifications** ||**OCL (mH)**|**OCL (mH)**||**OCL (mH)**|**l rms.**<br>**DCR (**Ω**) typ**|**DCR (**Ω**) typ**| |---|---|---|---|---|---|---| |**Part number**|**minimum (1-2)**|||**minimum (4-3)**|**Amperes max**<br>**@ 20°C (1-2)**|**@ 20°C (4-3)**| |CMT1-1-R|66.0|||66.0|0.74<br>1.20|1.20| |CMT1-2-R|49.0|||49.0|0.88<br>0.85|0.85| |CMT1-3-R|28.0|||28.0|1.13<br>0.50|0.50| |CMT1-4-R|21|||21|1.37<br>0.35|0.35| |CMT1-5-R|13|||13|1.76<br>0.20|0.20| |CMT1-6-R|7.50|||7.50|2.27<br>0.13|0.13| |CMT1-7-R|4.20|||4.20|2.89<br>0.08|0.08| |CMT1-8-R|2.40|||2.40|3.85<br>0.045|0.045| |CMT1-9-R|1.85|||1.85|4.53<br>0.033|0.033| |CMT1-10-R<br>CMT2-1-R<br>CMT2-2-R<br>CMT2-3-R<br>CMT2-4-R<br>CMT2-5-R<br>CMT2-6-R<br>CMT2-7-R<br>CMT2-8-R<br>CMT2-9-R<br>CMT2-10-R<br>CMT3-1-R<br>CMT3-2-R<br>CMT3-3-R<br>CMT3-4-R<br>CMT3-5-R<br>CMT3-6-R<br>CMT4-1-R<br>CMT4-2-R<br>CMT4-3-R<br>CMT4-4-R<br>CMT4-5-R<br>CMT4-6-R<br>**Defnitions:**|0.94<br>0.94<br>6.05<br>0.018<br>0.018<br>30<br>30<br>1.50<br>0.350<br>0.350<br>20<br>20<br>1.95<br>0.220<br>0.220<br>12<br>12<br>2.45<br>0.135<br>0.135<br>8.0<br>8.0<br>2.80<br>0.100<br>0.100<br>6.0<br>6.0<br>3.40<br>0.070<br>0.070<br>4.8<br>4.8<br>3.95<br>0.053<br>0.053<br>3.2<br>3.2<br>4.40<br>0.042<br>0.042<br>2.4<br>2.4<br>4.75<br>0.037<br>0.037<br>2.0<br>2.0<br>5.45<br>0.028<br>0.028<br>1.6<br>1.6<br>5.75<br>0.026<br>0.026<br>5.4<br>5.4<br>2.0<br>0.12<br>0.12<br>3.5<br>3.5<br>2.6<br>0.08<br>0.08<br>2.7<br>2.7<br>3.0<br>0.055<br>0.055<br>1.3<br>1.3<br>4.0<br>0.032<br>0.032<br>0.92<br>0.92<br>5.0<br>0.021<br>0.021<br>0.53<br>0.53<br>6.5<br>0.013<br>0.013<br>5.4<br>5.4<br>2.0<br>0.12<br>0.12<br>3.5<br>3.5<br>2.6<br>0.08<br>0.08<br>2.7<br>2.7<br>3.0<br>0.055<br>0.055<br>1.3<br>1.3<br>4.0<br>0.032<br>0.032<br>0.92<br>0.92<br>5.0<br>0.021<br>0.021<br>0.53<br>0.53<br>6.5<br>0.013<br>0.013<br>**Electrical Characteristics:**<br>Discontinued, Effective<br>March 1, 2016 or until<br>inventory is depleted.<br>No recommended<br>replacement available|||||| |OCL = Open Circuit Inductance|||||OCL (1-2) 0.10Vrms, 10kHz, 0.0Adc: (See Chart)|| |DCR = Direct Current Resistance|||||OCL (4-3) 0.10Vrms, 10kHz, 0.0Adc: (See Chart)|| |Irms = rms current for 40°C max temperature rise at worst||||case ambient temperature|DCR (1-2) typ @ 20°C: (See Chart)|| |of 85°C.|||||DCR (4-3) typ @ 20°C: (See Chart)|| ||||||Hipot rating: winding to winding: 2400 Vac for 1 second. Turns Ratio: (1-2):(4-3) 1:1|| www.eaton.com/elx 2 CMT Common mode inductors, through-hole Technical Data 4312 Effective October 2015 ## **Dimensions–mm** ## CMT1 **==> picture [518 x 553] intentionally omitted <==** **----- Start of picture text -----**<br> FRONT VIEW SIDE VIEW RECOMMENDED PCB LAYOUT BOTTOM VIEW SCHEMATIC<br>CMT1-X<br>29.5 max wwllyy R 0.80 dia<br>1.15 dia ± 0.13 1 4<br>1 4 2 3<br>22.0 max<br>36.5 max 10.0 ± 0.20 component side 1 4 2 3<br>2 3<br>13.0 ± 0.20 Pin #1 indicator<br>3.8<br>typ<br>2 3 3 4<br>13.00 10.00<br>CMT2<br>FRONT VIEW SIDE VIEW RECOMMENDED PCB LAYOUT BOTTOM VIEW SCHEMATIC<br>CMT2 -<br>36.5 max wwllyy R<br>3.00 dia ± 0.13<br>1.2 dia 1 4<br>1 4<br>2 3<br>44.5 max ±15.00.20 component side 26.5 max<br>1 4<br>2 3<br>±4.0 1.0 3.2 2 3 Pin #1 indicator<br>2 3 3 4 21.0 ± 0.20<br>15.0<br>21.0 ±0.2 ±0.2<br>CMT3<br>TOP VIEW SIDE VIEW BOTTOM VIEW RECOMMENDED PCB LAYOUT<br>5<br>Pin #1 Indicator typ ±15.00.20 y dia 1 2 z dia "Y" Dia<br>"Z" Dia ref<br>ref<br>1 2 4 3 CMT3-1 0.58 0.83<br>2 15.0 ±15.0 0.20 component side CMT3-2CMT3-3 0.640.71 0.900.97<br>25.0 max Dia ±0.20 CMT3-4 0.80 1.06<br>3 4 3 CMT3-5 0.89 1.15<br>4 3 ØDia 1 2 CMT3-6 0.99 1.25<br>15.0 ± 0.20<br>14 max<br>CMT4<br>FRONT VIEW SIDE VIEW BOTTOM VIEW RECOMMENDED PCB LAYOUT<br>15.4 max<br>25.0 max z dia "Y" Dia<br>y dia 1 4 ref "Z" Dia ref<br>12.00 CMT4-1 0.58 0.83<br>25.5 max 4CMT4-xwwllyy - R1 11.00 ±11.0 0.20 component side CMT4-4CMT4-2CMT4-5CMT4-3 0.800.640.890.71 1.061.150.900.97<br>3 2 2 3 CMT4-6 0.99 1.25<br>5.0 typ<br>12.0 ± 0.20<br>4 1<br>Pin #1 indicator 1 2<br>Discontinued, Effective<br>March 1, 2016 or until<br>inventory is depleted.<br>No recommended<br>replacement available<br>**----- End of picture text -----**<br> (1) All Dimensions are in millimeters unless otherwise specified (2) Tolerances are +/- 0.20mm unless stated otherwise. (3) wwllyy = (Date Code) R = (Revision Level) Schematic is the same for all the series www.eaton.com/elx 3 CMT Common mode inductors, through-hole Technical Data 4312 Effective October 2015 ## **Attenuation Curves** ## **Attenuation CMT1** **==> picture [403 x 580] intentionally omitted <==** **----- Start of picture text -----**<br> 0<br>-6 -7 -8 -9 -10<br>-10<br>-20<br>-30<br>-40<br>-50<br>-60<br>-1 -2 -3 -4 -5<br>-70<br>0.06 0.1 0.2 0.6 1 2 4<br>FREQUENCY (MHz)<br>Attenuation CMT2<br>-20<br>-6 -7 -8 -9 -10<br>-25<br>-30<br>-35<br>-40<br>-45<br>-50<br>-55<br>-60<br>-65<br>-70 -1 -2 -3 -4 -5<br>0.08 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8<br>FREQUENCY (MHz)<br>Attenuation CMT3 & CMT4<br>-10<br>-15<br>-5 -6<br>-20<br>-25<br>-30<br>-3 -4<br>-35<br>-40<br>-45<br>-1 -2<br>-50<br>0.06 0.1 0.2 0.4 0.6 0.8 1 2 4 6<br>FREQUENCY (MHz)<br>Discontinued, Effective<br>March 1, 2016 or until<br>inventory is depleted.<br>No recommended<br>replacement available<br>dB<br>dB<br>dB<br>**----- End of picture text -----**<br> www.eaton.com/elx 4 CMT Common mode inductors, through-hole Technical Data 4312 Effective October 2015 ## **Impedance Curves** **==> picture [476 x 481] intentionally omitted <==** **----- Start of picture text -----**<br> Impedance CMT1 - 1 thru - 5 Impedance CMT1 - 6 thru -10<br>100 20<br>90 -1 -2 18<br>80 16 -6<br>70 -3 14 -7<br>-10<br>60 12<br>50 10 -8<br>40 8 -9<br>30 6<br>20 4<br>10 -4 -5 2<br>0 0<br>0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.05 0.2 0.4 0.6 0.8 1 1.4<br>FREQUENCY (MHz) FREQUENCY (MHz)<br>Impedance CMT2 - 1 thru - 5 Impedance CMT2 - 6 thru -10<br>120 25<br>-1 -6<br> -7<br>100<br>-2 -3 - 4 20<br>-8<br>80<br> -5 15<br>60<br>10<br>40<br>5<br>20<br> -9 -10<br>0 0<br>0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.2 1.4 1.6<br>FREQUENCY (MHz) FREQUENCY (MHz)<br>Impedance CMT3 & CMT4 Impedance CMT3 & CMT4<br>25 3.5<br>-1 -4 -5 -6<br>-3 3<br>20<br>-2 2.5<br>15<br>2<br>10 1.5<br>1<br>5<br>0.5<br>0 0<br>0.06 0.1 0.2 0.4 0.6 0.8 1 2 0.06 0.1 0.2 0.4 0.6 0.8 1 2 4<br>FREQUENCY (MHz) FREQUENCY (MHz)<br>Discontinued, Effective<br>March 1, 2016 or until<br>inventory is depleted.<br>No recommended<br>replacement available<br>(K Ohm)<br>Z Z (K Ohm)<br>(K Ohm)<br>Z Z (K Ohm)<br>Z (K Ohm)<br>Z (K Ohm)<br>**----- End of picture text -----**<br> www.eaton.com/elx 5 CMT Common mode inductors, through-hole Technical Data 4312 Effective October 2015 ## **Wave solder profile** **==> picture [540 x 534] intentionally omitted <==** **----- Start of picture text -----**<br> tp<br>Tp<br>First Wave Second Wave<br>Tsmax<br>Tstyp<br>Tsmin<br>Preheat area Cool down area<br>Time<br>Reference EN 61760-1:2006<br>Profile Feature Standard SnPb Solder Lead (Pb) Free Solder<br>Preheat • Temperature min. (Tsmin) 100°C 100°C<br>• Temperature typ. (Tstyp) 120°C 120°C<br>• Temperature max. (Tsmax) 130°C 130°C<br>• Time (Tsmin to Tsmax) (ts) 70 seconds 70 seconds<br>D preheat to max Temperature 150°C max. 150°C max.<br>Peak temperature (TP)* 235°C – 260°C 250°C – 260°C<br>Time at peak temperature (tp) 10 seconds max 10 seconds max<br>5 seconds max each wave 5 seconds max each wave<br>Ramp-down rate ~ 2 K/s min ~ 2 K/s min<br>~3.5 K/s typ ~3.5 K/s typ<br>~5 K/s max ~5 K/s max<br>Time 25°C to 25°C 4 minutes 4 minutes<br>Manual solder<br>350°C, 4-5 seconds. (by soldering iron), generally manual, hand soldering is not recommended.<br>Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written<br>approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly<br>used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.<br>Discontinued, Effective<br>March 1, 2016 or until<br>inventory is depleted.<br>No recommended<br>replacement available<br>Temperature<br>**----- End of picture text -----**<br> Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. **Eaton** **Electronics Division** 1000 Eaton Boulevard Cleveland, OH 44122 United States www.eaton.com/elx © 2015 Eaton All Rights Reserved Printed in USA Publication No. 4312 October 2015 Eaton is a registered trademark. All other trademarks are property of their respective owners.
Updated at June 10, 2026
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