CTX50-1-52LP-R

THROUGH HOLE TOROIDAL INDUCTORS

⚠️ 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: Through Hole Toroidal Inductors
SVHC: No SVHC (21-Jan-2025)

Delivery and price
Units per pack	75
Price	3.39 €
Current stock	200+
Lead time	30 days

Datasheet

Effective July 2017 Supersedes August 2006 

Technical Data **4304** 

## LCPI 

## Toroid power inductors 

## **Applications** 

- Filters 

- Buck and boost switches 

- Chokes 

## **Product features** 

## **Environmental Data** 

- Low loss, iron powder cores with stable electrical operating characteristics maximize inductor efficiency by minimizing copper losses 

- Available in vertical and horizontal self leaded and header mounted configurations 

   - Storage temperature range (Component): -40 °C to +105 °C 

   - Operating temperature range: -40 °C to +105 °C (ambient plus self-temperature rise) 

- Inductance values range from 10 uH to 1000 uH 

- Current values range from 1.5 A to 29.5 A 

- Meets UL 94V-0 flammability standard 

- Iron powder core material 

Technical Data 4304 Effective July 2017 

## **Product Specifications** 

|**Vertical**|**Horizontal**|**Header Mounted**|**OCL(1)**|**I DC(2)**|**I SAT(3)**|**Volt-µsec(4)**|**Energy(5)**|**DCR (**Ω**)(6)**|
|---|---|---|---|---|---|---|---|---|
|**Part Number**|**Part Number**|**Part Number**|**µH +/- 20%**|**(A)**|**(A)**|**Vµs**|**µJ**|**max**|
|CTX10-1-52-R|CTX10-1-52LP-R|CTX10-1-52M-R|10.14|2.4|2.1|5.4|15|0.0481|
|CTX20-1-52-R|CTX20-1-52LP-R|CTX20-1-52M-R|20.22|1.8|2.2|7.8|36|0.0829|
|CTX50-1-52-R|CTX50-1-52LP-R|CTX50-1-52M-R|50.29|2.6|2.7|16.3|130|0.0715|
|CTX100-1-52-R|CTX100-1-52LP-R|CTX100-1-52M-R|100.40|2.5|2.4|27.5|197|0.1060|
|CTX150-1-52-R|CTX150-1-52LP-R|CTX150-1-52M-R|151.70|2.1|2.3|35.7|283|0.1620|
|CTX250-1-52-R|CTX250-1-52LP-R|CTX250-1-52M-R|250.90|1.9|2.2|47.8|421|0.2210|
|CTX500-1-52-R|CTX500-1-52LP-R|CTX500-1-52M-R|505.00|1.7|1.9|77.9|645|0.3610|
|CTX750-1-52-R|CTX750-1-52LP-R|CTX750-1-52M-R|754.40|1.8|2.4|114.3|1530|0.4340|
|CTX1000-1-52-R|CTX1000-1-52LPR|CTX1000-1-52M-R|1004.00|1.5|2.1|131.9|1530|0.6380|
|CTX10-2-52-R|CTX10-2-52LP-R|CTX10-2-52M-R|9.60|4.7|4.5|6.6|68|0.0183|
|CTX20-2-52-R|CTX20-2-52LP-R|CTX20-2-52M-R|19.60|3.2|3.2|9.4|69|0.0392|
|CTX50-2-52-R|CTX50-2-52LP-R|CTX50-2-52M-R|50.00|4.9|4.9|21.3|420|0.0326|
|CTX100-2-52-R|CTX100-2-52LP-R|CTX100-2-52M-R|101.70|4.4|4.3|35.0|643|0.0534|
|CTX150-2-52-R|CTX150-2-52LP-R|CTX150-2-52M-R|148.00|4.3|4.0|47.6|829|0.0719|
|CTX250-2-52-R|CTX250-2-52LP-R|CTX250-2-52M-R|251.10|4.2|4.2|66.0|1540|0.0833|
|CTX500-2-52-R|CTX500-2-52LP-R|CTX500-2-52M-R|499.40|3.1|3.3|104.0|1890|0.1830|
|CTX750-2-52-R|CTX750-2-52LP-R|CTX750-2-52M-R|749.30|3.4|3.4|147.3|2960|0.2080|
|CTX10-5-52-R|CTX10-5-52LP-R|CTX10-5-52M-R|9.68|8.7|11.1|9.4|417|0.0104|
|CTX20-5-52-R|CTX20-5-52LP-R|CTX20-5-52M-R|21.25|7.8|9.3|16.0|643|0.0260|
|CTX50-5-52-R|CTX50-5-52LP-R|CTX50-5-52M-R|49.60|7.6|9.4|29.3|1530|0.0248|
|CTX100-5-52-R|CTX100-5-52LP-R|CTX100-5-52M-R|97.20|8.2|7.5|45.7|1890|0.0267|
|CTX150-5-52-R|CTX150-5-52LP-R|CTX150-5-52M-R|150.60|7.7|7.5|66.0|2960|0.0401|
|CTX250-5-52-R|CTX250-5-52LP-R||254.40|9.2|8.1|102.4|5860|0.0400|
|CTX10-7-52-R|CTX10-7-52LP-R|CTX10-7-52M-R|10.04|11.4|13.5|11.0|640|0.0080|
|CTX20-7-52-R|CTX20-7-52LP-R|CTX20-7-52M-R|20.96|11.4|14.5|19.1|1540|0.0110|
|CTX50-7-52-R|CTX50-7-52LP-R|CTX50-7-52M-R|52.27|10.5|10.2|33.5|1900|0.0163|
|CTX100-7-52-R|CTX100-7-52LP-R||101.40|12.0|9.1|54.2|2960|0.0167|
|CTX150-7-52-R|CTX150-7-52LP-R||152.80|12.8|10.5|79.3|5900|0.0204|
|CTX10-10-52-R|CTX10-10-52LP-R||10.04|16.9|20.9|13.2|1530|0.0051|
|CTX20-10-52-R|CTX20-10-52LP-R||21.17|16.0|16.0|21.3|1900|0.0070|
|CTX50-10-52-R|CTX50-10-52LP-R||52.37|13.9|12.7|38.9|2960|0.0124|
|CTX100-10-52-R|CTX100-10-52LPR||99.38|17.6|13.0|64.0|5880|0.0109|
|CTX10-16-52-R|CTX10-16-52LP-R||9.90|27.3|29.3|16.9|2970|0.0032|
|CTX20-16-52-R|CTX20-16-52LP-R||19.24|31.5|29.5|28.1|5860|0.0034|



Notes: **(1)** Open circuit inductance test parameters: 100 kHz, 0.250 Vrms, 0 Adc. 

**(2)** DC current for an approximate ∆T of 30 °C at **+** 75 °C Ambient with no core loss. See Chart 2 for derating of I dc with core loss. 

**(3)** Peak current for an approximate 30% roll-off in OCL. For other current levels see Chart 1. 

**(4)** Applied Volt-Time product (Vµ **s** ) across the inductor. This value represents the Vµ **s** at 100 kHz necessary to generate a core loss equal to 10% of the total losses for 30°C rise. For other frequencies and operating levels see Chart 2. (Note: skin effect losses not included.) 

**(5)** Energy storage (µJ) at ISAT. For other current levels see Chart 1. 

**(6)** Maximum D.C. resistance at **+** 20 °C. 

www.eaton.com/electronics 

2 

LCPI Toroid power inductors 

Technical Data 4304 Effective July 2017 

## **Dimensions- mm** 

|**_Vertical and Horizontal Self Leaded Mounting Options_**|**_Vertical and Horizontal Self Leaded Mounting Options_**|**_Vertical and Horizontal Self Leaded Mounting Options_**|**_Vertical and Horizontal Self Leaded Mounting Options_**||||||
|---|---|---|---|---|---|---|---|---|
|**Vertical P/N**|**Horizontal P/N**|**OD**|**ID**|**Ht**|**X**|**Y**|**T**|**H**|
|**See Figure 1**|**See Figure 2**|**(max)**|**(typ)**|**(max)**|**(typ)**|**(typ)**|**(typ)**|**(typ)**|
|CTX10-1-52-R|CTX10-1-52LP-R|8.6|0.0|4.7|3.8|7.3|0.42|0.67|
|CTX20-1-52-R|CTX20-1-52LP-R|9.1|0.0|6.7|5.6|7.4|0.37|0.62|
|CTX50-1-52-R|CTX50-1-52LP-R|16.2|4.2|9.0|7.5|13.7|0.58|0.83|
|CTX100-1-52-R|CTX100-1-52LP-R|15.5|4.2|12.4|10.7|13.7|0.58|0.83|
|CTX150-1-52-R|CTX150-1-52LP-R|20.7|6.6|9.4|7.8|18.8|0.52|0.77|
|CTX250-1-52-R|CTX250-1-52LP-R|20.9|6.0|13.0|11.0|18.8|0.52|0.77|
|CTX500-1-52-R|CTX500-1-52LP-R|24.0|9.0|15.3|14.0|21.2|0.52|0.77|
|CTX750-1-52-R|CTX750-1-52LP-R|29.8|11.7|17.4|15.6|28.2|0.52|0.77|
|CTX1000-1-52-R|CTX1000-1-52LP-R|29.8|11.7|17.1|15.5|28.0|0.46|0.71|
|CTX10-2-52-R|CTX10-2-52LP-R|12.7|0.0|7.8|6.3|11.0|0.71|0.96|
|CTX20-2-52-R|CTX20-2-52LP-R|12.5|0.0|7.5|6.3|11.0|0.58|0.83|
|CTX50-2-52-R|CTX50-2-52LP-R|21.6|6.1|13.6|11.0|19.5|0.89|1.14|
|CTX100-2-52-R|CTX100-2-52LP-R|24.0|8.8|16.6|13.9|21.8|0.89|1.14|
|CTX150-2-52-R|CTX150-2-52LP-R|30.6|11.2|11.4|9.3|28.5|0.80|1.05|
|CTX250-2-52-R|CTX250-2-52LP-R|31.2|9.1|19.0|15.7|28.5|0.89|1.14|
|CTX500-2-52-R|CTX500-2-52LP-R|36.7|11.7|14.8|12.5|34.5|0.71|0.96|
|CTX750-2-52-R|CTX750-2-52LP-R|43.3|19.9|18.2|15.8|41.5|0.80|1.05|
|CTX10-5-52-R|CTX10-5-52LP-R|22.2|5.4|13.9|11.5|19.9|1.11|1.36|
|CTX20-5-52-R|CTX20-5-52LP-R|24.5|8.8|16.6|14.5|22.0|0.89|1.14|
|CTX50-5-52-R|CTX50-5-52LP-R|32.3|10.1|18.9|16.5|28.8|1.11|1.36|
|CTX100-5-52-R|CTX100-5-52LP-R|37.8|11.2|16.8|13.6|35.5|1.24|1.49|
|CTX150-5-52-R|CTX150-5-52LP-R|46.4|18.8|19.8|16.8|43.4|1.24|1.49|
|CTX250-5-52-R|CTX250-5-52LP-R|53.7|18.8|24.3|20.1|49.4|1.38|1.63|
|CTX10-7-52-R|CTX10-7-52LP-R|25.7|6.5|18.0|16.0|22.4|1.38|1.63|
|CTX20-7-52-R|CTX20-7-52LP-R|32.4|8.5|19.8|16.8|29.2|1.38|1.63|
|CTX50-7-52-R|CTX50-7-52LP-R|39.0|10.8|16.8|13.9|35.7|1.38|1.63|
|CTX100-7-52-R|CTX100-7-52LP-R|48.5|17.1|21.8|17.2|43.4|1.73|1.98|
|CTX150-7-52-R|CTX150-7-52LP-R|54.5|17.1|25.4|21.2|50.9|1.73|1.98|
|CTX10-10-52-R|CTX10-10-52LP-R|34.0|7.0|21.4|17.0|29.6|1.73|1.98|
|CTX20-10-52-R|CTX20-10-52LP-R|40.5|9.0|18.0|14.3|35.2|1.73|1.98|
|CTX50-10-52-R|CTX50-10-52LP-R|47.5|17.1|21.3|17.5|42.8|1.73|1.98|
|CTX100-10-52-R|CTX100-10-52LP-R|57.0|15.0|27.5|21.3|50.6|2.15|2.45|
|CTX10-16-52-R|CTX10-16-52LP-R|50.3|13.0|24.0|18.6|43.0|2.41|2.70|
|CTX20-16-52-R|CTX20-16-52LP-R|59.0|13.0|28.0|23.0|50.7|2.69|2.99|



Note: All dimensions are in millimeters. 

_**VERTICAL SELF LEADED MOUNT**_ 

**==> picture [371 x 181] intentionally omitted <==**

**----- Start of picture text -----**<br>
FIGURE 1 FIGURE 2<br>OD ID OD ID<br>m y =| ma<br>10.0 +/- 3<br>T dia.<br>« - 4<br>4 Ht 7“ ee Ht<br>10.0 +/- 3<br>el — T dia.<br>HORIZONTAL (ty p . )<br>SELF LEADED o t X FT 7“ H dia<br>(ty p . )<br>MOUNT<br>H dia. Y<br>(ty p . ) oT —<br>Drawings are not to scale.<br>**----- End of picture text -----**<br>


> www.eaton.com/electronics 3 

Technical Data 4304 Effective July 2017 

## **Dimensions- mm** 

|**_Header Mounted Option_**|**_Header Mounted Option_**|||||||||
|---|---|---|---|---|---|---|---|---|---|
|**Header Mounted**|**See**|**OD**|**A**|**B**|**C**|**X**|**Y**|**T**|**H**|
|**Part Number**|**Figure #**|**(max)**|**(max)**|**(max)**|**(max)**|**(typ)**|**(typ)**|**(typ)**|**(typ)**|
|CTX10-1-52M-R|3|8.6|9.4|9.4|6.9|6.5|6.5|—|—|
|CTX20-1-52M-R|3|9.1|9.4|9.4|9.0|6.5|6.5|—|—|
|CTX50-1-52M-R|4|16.2|19.6|16.1|20.0|15.3|6.4|—|—|
|CTX100-1-52M-R|4|15.5|19.6|16.1|19.7|15.3|6.4|—|—|
|CTX150-1-52M-R|4|20.7|19.6|16.1|24.2|15.3|6.4|—|—|
|CTX250-1-52M-R|5|20.9|31.0|16.0|22.5|20.3|10.2|1.20|1.45|
|CTX500-1-52M-R|5|24.0|35.4|21.7|25.0|23.0|15.4|1.20|1.45|
|CTX750-1-52M-R|5|29.8|35.4|21.7|31.6|23.0|15.4|1.20|1.45|
|CTX1000-1-52M-R|5|29.8|35.4|21.7|31.2|23.0|15.4|1.20|1.45|
|CTX10-2-52M-R|3|12.7|13.6|11.4|11.7|10.8|7.5|—|—|
|CTX20-2-52M-R|3|12.5|13.6|11.4|11.4|10.8|7.5|—|—|
|CTX50-2-52M-R|5|21.6|31.0|16.0|23.5|20.3|10.2|1.20|1.45|
|CTX100-2-52M-R|5|24.0|35.4|21.7|26.0|23.0|15.4|1.20|1.45|
|CTX150-2-52M-R|5|30.6|31.0|16.0|32.5|20.3|10.2|1.20|1.45|
|CTX250-2-52M-R|5|31.2|35.4|21.7|33.4|23.0|15.4|1.20|1.45|
|CTX500-2-52M-R|5|36.7|31.0|16.0|38.4|20.3|10.2|1.20|1.45|
|CTX750-2-52M-R|5|43.3|35.4|21.7|45.4|23.0|15.4|1.20|1.45|
|CTX10-5-52M-R|5|22.2|31.0|16.0|22.7|20.3|10.2|1.20|1.45|
|CTX20-5-52M-R|5|24.5|35.4|21.7|25.5|23.0|15.4|1.20|1.45|
|CTX50-5-52M-R|5|32.3|35.4|21.7|33.7|23.0|15.4|1.11|1.36|
|CTX100-5-52M-R|5|37.8|35.4|21.7|40.2|23.0|15.4|1.24|1.49|
|CTX150-5-52M-R|5|46.4|35.4|21.7|47.0|23.0|15.4|1.24|1.49|
|CTX10-7-52M-R|5|25.7|35.4|21.7|26.7|23.0|15.4|1.38|1.63|
|CTX20-7-52M-R|5|32.4|35.4|21.7|34.2|23.0|15.4|1.38|1.63|
|CTX50-7-52M-R|5|39.0|35.4|21.7|40.3|23.0|15.4|1.38|1.63|



Note: All dimensions are in millimeters. 

**==> picture [485 x 277] intentionally omitted <==**

**----- Start of picture text -----**<br>
CONNECTION FIGURE 3 FIGURE 4 FIGURE 5<br>DIAGRAM A OD OD<br>— — = =<br>2 3<br>1<br>m t | |<br>B C C<br>1 4<br>3 r t 4. 0 +/ - 1 TO 4. 2 5 +/ - 1.5<br>1 .00 di a.<br>(typ.)<br>C<br>A A<br>0 .5 0 di a. 3.8 +/ - 1 1 4 1 4<br>(typ.) B B<br>0 .70 d ia. ( typ. ) 2 3 2 Pins 1 & 3 : T di a. 3<br>s = 2 3 EA, 2, Pins 2 & 4 : 1 .2 0 di a.<br>Holes 1 & 3 : H d ia.<br>Y 1 .25 d i a.(typ.) 2 Holes 2 & 4 : 1. 45 d ia. 3<br>;s aac: 2 3 5 tL ° ° a<br>Y Y<br>1 4<br>v 1 ° X ° 4 ° X °— 1 ° X os 4<br>HEADER MOUNT — — -— — —<br>Drawings are not to scale.<br>Figure4<br>**----- End of picture text -----**<br>


www.eaton.com/electronics 

4 

LCPI Toroid power inductors 

Technical Data 4304 Effective July 2017 

## **Core loss** 

**==> picture [216 x 213] intentionally omitted <==**

**----- Start of picture text -----**<br>
0<br>20<br>40<br>50<br>60<br>70<br>80<br>90<br>92<br>94<br>95<br>96<br>97<br>98<br>99<br>% of applied Volt-µ s econds<br>500 kHz 200 kHz 100 kHz 50 kHz 20 kHz<br>% of Losses from Irms (maximum)<br>10 20 30 40 50 60 80 100 200 300 400 500 600 800 1000<br>**----- End of picture text -----**<br>


## **Inductance characteristics** 

**==> picture [245 x 220] intentionally omitted <==**

**----- Start of picture text -----**<br>
1000<br>800<br>600<br>500<br>400<br>300<br>200<br>100<br>80<br>60<br>50<br>40<br>30<br>20<br>10<br>0 50 100 150 200 250 300<br>% OF ISAT<br>Inductance Energy<br>% of OCL  or  % of Energy<br>**----- End of picture text -----**<br>


> www.eaton.com/electronics 5 

LCPI Toroid power inductors 

Technical Data 4304 Effective July 2017 

## **Wave solder profile- Through-hole components** 

## Reflow soldering not recommended 

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/electronics 

© 2017 Eaton All Rights Reserved Printed in USA Publication No. 4304 July 2017 

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

Updated at June 9, 2026

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