CMS1-1-R

Inductor, Common Mode, 4.5 µH, CMS Series, 7 A, 9.4mm x 7.2mm x 2.6mm

⚠️ 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 ELECTRONICS
Product type: SMD Common Mode Chokes / Filters
Rated Current:7A; Inductance:4.5µH; Product Range:CMS Series; Impedance:-; Common Mode Filter Case:9.4mm x 7.2mm x 2.6mm; Automotive Qualification Standard:-; SVHC:No SVHC (15-Jan-2019); Core Material:
Impedance: -
Inductance: 4.5µH
Product Range: CMS Series
Product Width: 7.2mm
Qualification: -
Product Height: 2.6mm
Product Length: 9.4mm
DC Current Rating: 7A
DC Resistance Max: 0.0027ohm
Inductor Case / Package: -
Operating Temperature Max: 160°C
Operating Temperature Min: -40°C

Delivery and price
Units per pack	20
Price	2.62 €
Current stock	500+
Lead time	30 days

Datasheet

Effective October 2015 Supersedes March 2007 

Technical Data **4313** 

## CMS 

## Common mode inductors, surface mount 

## **Applications** 

- EMI filters 

- DC-DC brick power supplies 

- Discrete output supplies 

- Discrete and point-of-use power supplies (PUPS) 

## **Environmental data** 

- Storage temperature range: -40°C to +160°C 

- Operating ambient temperature range: -40°C to +160°C (range is application specific) 

- Solder reflow temperature: J-STD-020D compliant 

## **Product description** 

- Three sizes of surface mount torroidal commonmode inductors that provide 300Vdc isolation 

**==> picture [21 x 13] intentionally omitted <==**

**----- Start of picture text -----**<br>
Pb<br>**----- End of picture text -----**<br>


- Inductance range from 5.5uH to 1600uH 

- Current range up to 7.0 Amps 

- Noise attenuation up to 44 dB 

- Frequency range up to 100 MHz 

- Meets UL94V-0 flammability standard 

- Ferrite core material 

CMS Common mode inductors, surface mount 

Technical Data 4313 Effective October 2015 

## **Product specifications** 

||||||**Leakage**||
|---|---|---|---|---|---|---|
|**Part number**|**OCL (uH) minimum**<br>**(1-2) & (4-3)**|**I rms. Amperes**<br>**Max***|**DCR (**Ω**) typ @**<br>**20°C (1-2)**|**DCR (**Ω**) typ @**<br>**20°C (4-3)**|**Inductance (uH)**<br>**typ**|**Interwinding**<br>**Capacitance (pF) typ**|
|CMS1-1-R|4.5|7.00|0.0027|0.0027|0.05|2.0|
|CMS1-2-R|8|5.70|0.0040|0.0040|0.09|2.1|
|CMS1-3-R|12.6|4.10|0.077|0.077|0.14|2.2|
|CMS1-4-R|18|3.80|0.0089|0.0089|0.20|2.3|
|CMS1-5-R|25|3.60|0.0100|0.0100|0.28|2.4|
|CMS1-6-R|32.8|3.10|0.0138|0.0138|0.36|2.5|
|CMS1-7-R|41.5|2.60|0.019|0.019|0.45|2.6|
|CMS1-8-R|51.2|2.20|0.026|0.026|0.056|2.7|
|CMS1-9-R|62|1.90|0.035|0.035|0.68|2.7|
|CMS1-10-R|73.7|1.65|0.048|0.048|0.81|2.8|
|CMS1-11-R|100|1.35|0.070|0.070|1.10|3.9|
|CMS1-12-R|131|1.15|0.100|0.100|1.45|3.0|
|CMS1-13-R|166|1.00|0.138|0.138|1.83|3.1|
|CMS1-14-R|205|0.85|0.186|0.186|2.25|3.2|
|CMS2-0-R|14|6.00|0.004|0.004|0.13|1.7|
|CMS2-1-R|25|5.35|0.005|0.005|0.22|2.0|
|CMS2-2-R|40|4.40|0.008|0.008|0.34|2.3|
|CMS2-3-R|57|3.60|0.012|0.012|0.47|2.5|
|CMS2-4-R|102|2.80|0.019|0.019|0.80|2.8|
|CMS2-5-R|160|2.30|0.029|0.029|1.25|3.1|
|CMS2-6-R|230|1.85|0.044|0.044|1.75|3.4|
|CMS2-7-R|270|1.60|0.060|0.060|2.00|3.6|
|CMS2-8-R|360|1.35|0.084|0.084|2.60|3.9|
|CMS2-9-R|460|1.10|0.120|0.120|3.30|4.3|
|CMS2-10-R|575|0.94|0.170|0.170|4.00|4.3|
|CMS2-11-R|700|0.80|0.230|0.230|5.00|4.6|
|CMS2-12-R|915|0.67|0.330|0.330|6.30|4.9|
|CMS2-13-R|1070|0.58|0.440|0.440|7.30|5.1|
|CMS2-14-R|1340|0.50|0.620|0.620|9.00|5.4|
|CMS3-1-R|28|5.70|0.005|0.005|0.31|2.80|
|CMS3-2-R|45|5.10|0.006|0.006|0.46|3.05|
|CMS3-3-R|64|4.75|0.007|0.007|0.64|3.30|
|CMS3-4-R|88|3.95|0.010|0.010|0.85|3.50|
|CMS3-5-R|146|3.10|0.017|0.017|1.30|3.70|
|CMS3-6-R|217|2.85|0.020|0.020|1.90|3.90|
|CMS3-7-R|258|2.45|0.027|0.027|2.20|4.15|
|CMS3-8-R|350|2.00|0.040|0.040|3.00|4.40|
|CMS3-9-R|400|1.70|0.053|0.053|3.30|4.65|
|CMS3-10-R|518|1.45|0.076|0.076|4.20|4.85|
|CMS3-11-R|648|1.20|0.107|0.107|5.10|5.10|
|CMS3-12-R|790|1.05|0.145|0.145|6.10|5.35|
|CMS3-13-R|1030|0.88|0.210|0.210|7.80|5.55|
|CMS3-14-R|1310|0.75|0.300|0.300|9.60|5.80|



**Definitions:** 

**Electrical Characteristics:** 

OCL = Open Circuit Inductance OCL (1-2) 0.10Vrms, 100kHz, 0.0Adc: (See Chart) DCR = Direct Current Resistance OCL (4-3) 0.10Vrms, 100kHz, 0.0Adc: (See Chart) Irms = rms current for approx. a 40°C temperature rise at an ambient temperature of 85°C. DCR (1-2) typ @ 20°C: (See Chart) *Operating Temperature: 160°C Max. Inductance values are sustained up to 160°C. DCR (4-3) typ @ 20°C: (See Chart) Hipot rating: winding to winding: 300Vdc min. for 1 second. Turns Ratio: (1-2):(4-3) 1:1 

www.eaton.com/elx 

2 

CMS Common mode inductors, surface mount 

Technical Data 4313 Effective October 2015 

## **Dimensions–mm** 

CMS1 

**==> picture [101 x 6] intentionally omitted <==**

**----- Start of picture text -----**<br>
RECOMMENDED PCB LAYOUT<br>**----- End of picture text -----**<br>


**==> picture [194 x 64] intentionally omitted <==**

**----- Start of picture text -----**<br>
TOP VIEW<br>9.4 max<br>FRONT VIEW<br>3 2<br>CMS1-<br>wwllyy R 7.2 max<br>4 1 2.6 max<br>Pin 1 indicator<br>White dot<br>**----- End of picture text -----**<br>


**==> picture [119 x 121] intentionally omitted <==**

**==> picture [70 x 69] intentionally omitted <==**

**----- Start of picture text -----**<br>
SCHEMATIC<br>1:1<br>1 4<br>2 3<br>**----- End of picture text -----**<br>


CMS2 

**==> picture [61 x 93] intentionally omitted <==**

**==> picture [74 x 83] intentionally omitted <==**

**==> picture [74 x 44] intentionally omitted <==**

CMS3 

**==> picture [96 x 91] intentionally omitted <==**

**==> picture [86 x 83] intentionally omitted <==**

**==> picture [69 x 40] intentionally omitted <==**

wwllyy = Date code  R = Revision level 

www.eaton.com/elx 

3 

CMS Common mode inductors, surface mount 

Technical Data 4313 Effective October 2015 

## **Packaging Information** 

## CMS1 

Supplied in tape and reel packaging, 2,000 parts per 13” diameter reel 

**==> picture [249 x 99] intentionally omitted <==**

**----- Start of picture text -----**<br>
See note 1<br>min. +0.1/-0.0 Pin #1 indicator<br>See note 6<br>A 1.75<br>+/-0.05<br>0.3Rad 7<br> max. See note 6<br>Bo +/-0.3<br>A<br>B<br>Ko= 2.7mm<br>A<br>Ko Ao 0<br>typ.<br>12.0<br>SECTION A-A<br>Direction of feed<br>**----- End of picture text -----**<br>


## CMS2 

Supplied in tape and reel packaging, 800 parts per 13” diameter reel 

**==> picture [249 x 100] intentionally omitted <==**

**----- Start of picture text -----**<br>
(see note 1)<br>+0.1/-0.0 (see note 6) min A<br>+/-0.05 1.75<br>Ao=9.3mmBo=9.3mm 0.3Radmax. Pin #1 Indicator (see note 6)<br>Ko=6.4mm B +/-0.3<br>K<br>6.7 A 12.0 A typ<br>SECTION A-A<br>User direction of feed<br>**----- End of picture text -----**<br>


## CMS3 

Supplied in tape and reel packaging, 600 parts per 13” diameter reel 

**==> picture [500 x 342] intentionally omitted <==**

**----- Start of picture text -----**<br>
(see note 1)<br>+/-0.05 +0.1/-0.0 (see note 6) min A 1.75<br>Ao=11.8mm 0.3Radmax. Pin #1 Indicator (see note 6)<br>Bo=11.8mm<br>Ko=6.8mm B +/-0.3<br>K<br>7.1 A A typ<br>SECTION A-A 16.0<br>User direction of feed<br>Attenuation Curves<br>Attenuation       CMS 1 Attenuation       CMS 2<br>0 0<br>-1   -4     -7   -5 -1    -4   -7<br>-5<br>-10<br>-10 -15<br>-15 -20<br>-25<br>-20 -30<br>-25 -35<br>-40<br>-30<br>-45<br>-11    -14<br>-35 -50 -11    -14<br>1 2 4 6 8 10 20 40 60 1 2 4 6 8 10 20 40 60<br>FREQUENCY (MHz) FREQUENCY (MHz)<br>dB dB<br>**----- End of picture text -----**<br>


## **Attenuation Curves** 

## **Attenuation       CMS 3** 

**==> picture [191 x 129] intentionally omitted <==**

**----- Start of picture text -----**<br>
0<br> -1    -4    -7<br>-5<br>-10<br>-15<br>-20<br>-25<br>-30<br>-35<br>-40<br>-45<br>-11       -14<br>-50<br>1 2 4 6 8 10 20 40<br>FREQUENCY (MHz)<br>dB<br>**----- End of picture text -----**<br>


www.eaton.com/elx 

4 

CMS Common mode inductors, surface mount 

Technical Data 4313 Effective October 2015 

## **Impedance Curves** 

## **Impedance     CMS1-1 & 4** 

**==> picture [183 x 395] intentionally omitted <==**

**----- Start of picture text -----**<br>
350<br>300<br>-4<br>250<br>200<br> -1<br>150<br>100<br>50<br>0<br>0.4 0.6 0.8 1 2 3 4 6 8 10<br>FREQUENCY (MHz)<br>Impedance     CMS2  -  1 & 4<br>1800<br>1600<br>-4<br>1400<br>1200<br>1000<br>800<br>600  -1<br>400<br>200<br>0<br>0.4 0.6 0.8 1 2 4 6 8 10 20<br>FREQUENCY (MHz)<br>Impedance     CMS3 - 1 & 4<br>1600<br>1400<br>-4<br>1200<br>1000<br>800<br> -1<br>600<br>400<br>200<br>0<br>0.4 0.6 0.8 1 2 3 4 6 8<br>FREQUENCY (MHz)<br>Z (Ohms)<br>Z (Ohms)<br>Z (Ohms)<br>**----- End of picture text -----**<br>


## **Impedance     CMS1  - 7,11, & 14** 

**==> picture [188 x 99] intentionally omitted <==**

**----- Start of picture text -----**<br>
4000<br>-14<br>3000<br> -11 -7<br>2000<br>1000<br>0<br>0.4 0.6 0.8 1 2 3 4 6 8 10<br>FREQUENCY (MHz)<br>Z (Ohms)<br>**----- End of picture text -----**<br>


**Impedance     CMS2 -  7,11, & 14** 

**==> picture [204 x 261] intentionally omitted <==**

**----- Start of picture text -----**<br>
18000<br>-14<br>16000<br>14000<br>12000<br> -11<br>10000<br>-7<br>8000<br>6000<br>4000<br>2000<br>0<br>0.4 0.6 0.8 1 2 3 4 6<br>FREQUENCY (MHz)<br>Impedance     CMS3  - 7,11, & 14<br>16000<br>14000<br>-14<br>12000<br> -11<br>10000<br>-7<br>8000<br>6000<br>4000<br>2000<br>0<br>0.4 0.6 0.8 1 2 3 4 6 8<br>FREQUENCY (MHz)<br>Z (Ohms)<br>Z (Ohms)<br>**----- End of picture text -----**<br>


www.eaton.com/elx 

5 

CMS Common mode inductors, surface mount 

Technical Data 4313 Effective October 2015 

## **Solder reflow profile** 

**==> picture [328 x 183] intentionally omitted <==**

**----- Start of picture text -----**<br>
TP<br>TC -5°C<br>Max. Ramp Up Rate = 3°C/s tP<br>Max. Ramp Down Rate = 6°C/s<br>TL<br>Preheat t<br>A<br>Tsmax<br>Tsmin<br>   ts<br>25°C<br>Time 25°C to Peak  Time<br>Temperature<br>**----- End of picture text -----**<br>


## **Table 1 - Standard SnPb Solder (Tc)** 

||**Package**<br>**Thickness**|**Volume**<br>**mm3**<br>**<350**||**Volume**<br>**mm3**<br>≥**350**|
|---|---|---|---|---|
||<2.5mm)|235°C||220°C|
||≥2.5mm|220°C||220°C|



## **Table 2 - Lead (Pb) Free Solder (Tc)** 

||**Package**<br>**Thickness**||**Volume**<br>**mm3**<br>**<350**||**Volume**<br>**mm3**<br>**350 - 2000**||**Volume**<br>**mm3**<br>**>2000**|
|---|---|---|---|---|---|---|---|
||<1.6mm||260°C||260°C||260°C|
||1.6 – 2.5mm||260°C||250°C||245°C|
||>2.5mm||250°C||245°C||245°C|



## **Reference JDEC J-STD-020D** 

|**Profile Feature**||**Standard SnPb Solder**||**Lead (Pb) Free Solder**|
|---|---|---|---|---|
|Preheat and Soak     • Temperature min. (Tsmin)||100°C||150°C|
|• Temperature max. (Tsmax)||150°C||200°C|
|• Time (Tsmin to Tsmax) (ts)||60-120 Seconds||60-120 Seconds|
|Average ramp up rate Tsmax to Tp||3°C/ Second Max.||3°C/ Second Max.|
|Liquidous temperature (Tl)||183°C||217°C|
|Time at liquidous (tL)||60-150 Seconds||60-150 Seconds|
|Peak package body temperature (TP)*||Table 1||Table 2|
|Time (tp)** within 5 °C of the specified classification temperature (Tc)||20 Seconds**||30 Seconds**|
|Average ramp-down rate (Tpto Tsmax)||6°C/ Second Max.||6°C/ Second Max.|
|Time 25°C to Peak Temperature||6 Minutes Max.||8 Minutes Max.|



* Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum. 

** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum. 

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 approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 

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. 4313 October 2015 

Eaton is a registered trademark. All other trademarks are property of their respective owners.

Updated at June 6, 2026

About Novapart

Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 540,000+ components from 500+ manufacturers.

Learn more →

Stock Shortage Specialist

When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.

Request a quote →

Compliant Alternatives

We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.

BOM Analysis service →