RM5/I-3C90

Transformer Cores, RM5/I, 3C90, 23.2 mm, 24.8 mm²

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: FERROXCUBE
Product type: Transformer Cores
Core Type:-; Core Size:RM5/I; Core Material Grade:3C90; For Use With:-; Effective Magnetic Path Length:23.2mm; Ae Effective Cross Section Area:24.8mm²; Inductance Factor Al:2µH; Product Range:RM
SVHC: No SVHC (17-Jan-2023)
Core Size: RM5/I
Core Type: -
For Use With: -
Product Range: -
Core Material Grade: 3C90
Inductance Factor Al: 2µH
Effective Magnetic Path Length: 23.2mm
Ae Effective Cross Section Area: 24.8mm²

Delivery and price
Units per pack	1000
Price	0.56 €
Current stock	200+
Lead time	30 days

Datasheet

## _**FERROXCUBE**_ 

**RM5/I** RM, RM/I, RM/ILP cores and accessories 

Supersedes data of September 2004 2008 Sep 01 

**==> picture [347 x 67] intentionally omitted <==**

Ferroxcube 

## RM, RM/I, RM/ILP cores and accessories 

## RM5/I 

## **CORE SETS** 

## **Effective core parameters** 

|**SYMBOL**|**PARAMETER**|**VALUE**|**UNIT**|
|---|---|---|---|
|Σ(I/A)|core factor (C1)|0.935|mm−1|
|Ve|effective volume|574|mm3|
|Ie|effective length|23.2|mm|
|Ae|effective area|24.8|mm2|
|Amin|minimum area|18.1|mm2|
|m|mass of set|≈3.2|g|



**==> picture [242 x 271] intentionally omitted <==**

**----- Start of picture text -----**<br>
handbook, halfpage 0<br>12.3 0.5<br>0<br>6.8 2.5<br>0.4<br>6<br>14.9 max<br>O 4.9 [0]<br>0.2<br>9.1 0.4 10.4<br>   0.25  6.3 0    0.1<br>MGC050<br>0.4<br>O 10.2<br>0<br>Dimensions in mm.<br>Fig.1  RM5/I core set.<br>**----- End of picture text -----**<br>


## **Core sets for general purpose** 

Clamping force for AL measurements, 12 ±5 N. 

|**GRADE**|**AL**<br>**(nH)**|µ**e**|**AIR GAP**<br>**(**µ**m)**|**TYPE NUMBER**|
|---|---|---|---|---|
|3C90|63±3%|≈47|≈680<br>|RM5/I-3C90-A63|
||100±3%|≈74|≈380<br>|RM5/I-3C90-A100|
||160±3%|≈119|≈220<br>|RM5/I-3C90-A160|
||250±3%|≈186|≈130<br>|RM5/I-3C90-A250|
||315±5%|≈234|≈100<br>|RM5/I-3C90-A315|
||2000±25%|≈1490|≈0<br>|RM5/I-3C90|
|3C94|63±3%|≈47|≈680<br>|RM5/I-3C94-A63|
||100±3%|≈74|≈380<br>|RM5/I-3C94-A100|
||160±3%|≈119|≈220<br>|RM5/I-3C94-A160|
||250±3%|≈186|≈130<br>|RM5/I-3C94-A250|
||315±5%|≈234|≈100<br>|RM5/I-3C94-A315|
||2000±25%|≈1490|≈0<br>|RM5/I-3C94|
|3C95|2350±25%|≈1750|≈0<br>|RM5/I-3C95|
|3C96|1800±25%|≈1340|≈0<br>|RM5/I-3C96|
|3F3|63±3%|≈47|≈680<br>|RM5/I-3F3-A63|
||100±3%|≈74|≈380<br>|RM5/I-3F3-A100|
||160±3%|≈119|≈220<br>|RM5/I-3F3-A160|
||250±3%|≈186|≈130<br>|RM5/I-3F3-A250|
||315±5%|≈234|≈100<br>|RM5/I-3F3-A315|
||1700±25%|≈1270|≈0<br>|RM5/I-3F3|



2008 Sep 01 

2 

Ferroxcube 

## RM, RM/I, RM/ILP cores and accessories 

## RM5/I 

|**GRADE**|**AL**<br>**(nH)**|µ**e**|**AIR GAP**<br>**(**µ**m)**|**TYPE NUMBER**|
|---|---|---|---|---|
|3F35|1300±25%|≈970|≈0|RM5/I-3F35|
|3F4|100±3%|≈74|≈360|RM5/I-3F4-A100|
||160±3%|≈119|≈200|RM5/I-3F4-A160|
||250±3%|≈186|≈110|RM5/I-3F4-A250|
||900±25%|≈670|≈0|RM5/I-3F4|
|3F45|900±25%|≈670|≈0|RM5/I-3F45|



## **Core sets of filter and high permeability grades** 

Clamping force for AL measurements, 12 ±5 N. 

|**GRADE**|**AL**<br>**(nH)**|µ**e**|**AIR GAP**<br>**(**µ**m)**|**TYPE NUMBER**|
|---|---|---|---|---|
|3B46|2800 ±25%|≈2080|≈0|RM5/I-3B46|
|3E27|4975 ±25%|≈3700|≈0|RM5/I-3E27|
|3E5|6700 +40/−30%|≈4990|≈0|RM5/I-3E5|
|3E6|8500 +40/−30%|≈6330|≈0|RM5/I-3E6|



**Properties of core sets under power conditions** 

|**GRADE**|**B (mT) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|
|---|---|---|---|---|---|---|
||**H = 250 A/m;**<br>**f = 25 kHz;**<br>**T = 100**°**C**|**f = 25 kHz;**<br>**= 200 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 100 kHz;**<br>**= 100 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 100 kHz;**<br>**= 200 mT;**<br>**T = 25** °**C**<br>**B**ˆ|**f = 100 kHz;**<br>**= 200 mT;**<br>**T = 100** °**C**<br>**B**ˆ|**f = 400 kHz;**<br>**= 50 mT;**<br>**T = 100**°**C**<br>**B**ˆ|
|3C90|≥320|≤0.07|≤0.08|−|−|−|
|3C94|≥320|−|≤0.06|−|≤0.32|−|
|3C95|≥320|−|−|≤0.32|≤0.3|−|
|3C96|≥340|−|≤0.04|−|≤0.24|≤0.11|
|3F3|≥315|−|≤0.08|−|−|≤0.11|
|3F35|≥300|−|−|−|−|≤0.06|
|3F4|≥250|−|−|−|−|−|



## **Properties of core sets under power conditions (continued)** 

|**GRADE**|**B (mT) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|**CORE LOSS (W) at**|
|---|---|---|---|---|---|---|
||**H = 250 A/m;**<br>**f = 25 kHz;**<br>**T = 100**°**C**|**f = 500 kHz;**<br>**= 50 mT;**<br>**T = 100** °**C**<br>**B**ˆ|**f = 500 kHz;**<br>**= 100 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 1 MHz;**<br>**= 30 mT;**<br>**T = 100** °**C**<br>**B**ˆ|**f = 1 MHz;**<br>**= 50 mT;**<br>**T = 100**°**C**<br>**B**ˆ|**f = 3 MHz;**<br>**=10 mT;**<br>**T = 100** °**C**<br>**B**ˆ|
|3C90|≥320|−|−|−|−|−|
|3C94|≥320|−|−|−|−|−|
|3C95|≥320|−|−|−|−|−|
|3C96|≥340|≤0.22|−|−|−|−|
|3F3|≥315|−|−|−|−|−|
|3F35|≥300|≤0.08|≤0.7|−|−|−|
|3F4|≥250|−|−|≤0.17|−|≤0.27|
|3F45|≥250|−|−|≤0.13|≤0.48|≤0.23|



2008 Sep 01 

3 

Ferroxcube 

## RM, RM/I, RM/ILP cores and accessories 

## RM5/I 

## **COIL FORMERS** 

## **General data SMD coil former** 

|**General data SMD coil former**||
|---|---|
|**PARAMETER**|**SPECIFICATION**|
|Coil former material|phenolformaldehyde (PF), glass-reinforced, flame retardant in accordance with<br>_“UL 94V-0”_; UL file number E41429 (M)|
|Solder pad material|copper-clad steel, tin (Sn) plated|
|Maximum operatingtemperature|155 °C,_“IEC 60085”,_class F|
|Resistance to solderingheat|_“IEC 60068-2-20”_, Part 2, Test Tb, method 1B, 350 °C, 3.5 s|
|Solderability|_“IEC 60068-2-20”_, Part 2, Test Ta, method 1|



**==> picture [497 x 243] intentionally omitted <==**

**----- Start of picture text -----**<br>
∅ 10.1   −0.15 [0   ] 2<br>∅ 5.9  − [0   ] 0.1<br>∅ 5  [+0.1] 4.7 0.45<br>0 min.<br>2.8<br>handbook, full pagewidth<br>0.9 6.1  − [0   ] 0.1 2<br>8.65 max. 11.2<br>1 1.8<br>0.3<br>3.75 14.9 max. CBW512<br>11.25 3.75<br>14.15 max.<br>Dimensions in mm.<br>Fig.2  SMD coil former for RM5/I.<br>**----- End of picture text -----**<br>


## **Winding data and area product for RM5/I coil former (SMD)** 

|**NUMBER OF**<br>**SECTIONS**|**NUMBER OF**<br>**SOLDER**<br>**PADS**|**WINDING**<br>**AREA**<br>**(mm2)**|**WINDING**<br>**WIDTH**<br>**(mm)**|**AVERAGE**<br>**LENGTH OF**<br>**TURN**<br>**(mm)**|**AREA**<br>**PRODUCT**<br>**Ae x Aw**<br>**(mm4)**|**TYPE NUMBER**|
|---|---|---|---|---|---|---|
|1|8|9.5|4.7|24.9|236|CSVS-RM5-1S-8P|



2008 Sep 01 

4 

Ferroxcube 

## RM, RM/I, RM/ILP cores and accessories 

## RM5/I 

Additional coil formers are those of _“RM5”_ , but _“area product”_ is different. 

## **Winding data and area product (for RM5/I) for 4-pins RM5 coil former** 

|**NUMBER**<br>**OF**<br>**SECTIONS**|**NUMBER**<br>**OF**<br>**PINS**|**PIN**<br>**POSITIONS**<br>**USED**|<br>**WINDING**<br>**AREA**<br>**(mm2)**|**WINDING**<br>**WIDTH**<br>**(mm)**|**AVERAGE**<br>**LENGTH**<br>**OF TURN**<br>**(mm)**|**AREA**<br>**PRODUCT**<br>**Ae x Aw**<br>**(mm4)**|**TYPE NUMBER**|
|---|---|---|---|---|---|---|---|
|1|4|all|9.5|4.8|25|236|CSV-RM5-1S-4P|
|2|4|all|2×4.35|2×2.2|25|2 x 108|CSV-RM5-2S-4P|



## **Winding data and area product (for RM5/I) for 6-pins RM5 coil former** 

|**NUMBER**<br>**OF**<br>**SECTIONS**|**NUMBER**<br>**OF**<br>**PINS**|**PIN**<br>**POSITIONS**<br>**USED**|**WINDING**<br>**AREA**<br>**(mm2)**|**WINDING**<br>**WIDTH**<br>**(mm)**|**AVERAGE**<br>**LENGTH**<br>**OF**<br>**TURN**<br>**(mm)**|**AREA**<br>**PRODUCT**<br>**Ae x Aw**<br>**(mm4)**|**TYPE NUMBER**|
|---|---|---|---|---|---|---|---|
|1|6|all|9.2|4.68|24.9|228|CSV-RM5-1S-6P-G()|
|1|5|1, 2, 3, 5, 6|9.2|4.68|24.9|228|CSV-RM5-1S-5P-G()|
|1|4|2, 3, 5, 6|9.2|4.68|24.9|228|CSV-RM5-1S-4P-G()|
|2|6|all|2×4.15|2×2.06|24.9|2 x 103|CSV-RM5-2S-6P-G()|
|2|5|1, 2, 3, 5, 6|2×4.15|2×2.06|24.9|2 x 103|CSV-RM5-2S-5P-G()|



## **Note** 

Also available with post-inserted pins. 

2008 Sep 01 

5 

Ferroxcube 

RM, RM/I, RM/ILP cores and accessories 

RM5/I 

## **MOUNTING PARTS** 

## **General data mounting clip with earth pin** 

|**ITEM**|**SPECIFICATION**|
|---|---|
|Clampingforce|≈6 N|
|Clip material|stainless steel (CrNi)|
|Clip plating|tin (Sn)|
|Solderability|_‘‘IEC 60068-2-20’’_,<br>Part 2, Test Ta, method 1|
|Type number|CLI/P-RM4/5/I|



## **General data mounting clip without earth pin** 

|**ITEM**|**SPECIFICATION**|
|---|---|
|Clampingforce|≈5 N|
|Clip material|stainless steel (CrNi)|
|Type number|CLI-RM4/5/I|



**==> picture [242 x 291] intentionally omitted <==**

**----- Start of picture text -----**<br>
handbook, halfp2.1age<br>9.8 R22 8.2<br>0.7 4.3<br>CBW361<br>Dimensions in mm.<br>Fig.3  Mounting clip with earth pin for RM5/I.<br>**----- End of picture text -----**<br>


**==> picture [242 x 291] intentionally omitted <==**

**----- Start of picture text -----**<br>
handbook, halfpage 2.1<br>9.8 8.2<br>R22<br>CBW124<br>Dimensions in mm.<br>Fig.4  Mounting clip without earth pin for RM5/I.<br>**----- End of picture text -----**<br>


2008 Sep 01 

6 

Ferroxcube 

RM, RM/I, RM/ILP cores and accessories 

## RM5/I 

## **DATA SHEET STATUS DEFINITIONS** 

|**DATA SHEET**<br>**STATUS**|**PRODUCT**<br>**STATUS**|**DEFINITIONS**|
|---|---|---|
|Preliminary<br>specification|Development|This data sheet contains preliminary data. Ferroxcube reserves the right to<br>make changes at any time without notice in order to improve design and<br>supplythe best possible product.|
|Product specification|Production|This data sheet contains final specifications. Ferroxcube reserves the right<br>to make changes at any time without notice in order to improve design and<br>supplythe best possible product.|



## **DISCLAIMER** 

 **Life support applications** These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube for any damages resulting from such application. 

## **PRODUCT STATUS DEFINITIONS** 

|**STATUS**|**INDICATION**|**DEFINITION**|
|---|---|---|
|**Prototype**||These are products that have been made as development samples for the purposes of<br>technical evaluation only. The data for these types is provisional and is subject to<br>change.|
|**Design-in**||These products are recommended for new designs.|
|**Preferred**||These products are recommended for use in current designs and are available via our<br>sales channels.|
|**Support**||These products are**not**recommended for new designs and may not be available<br>through all of our sales channels. Customers are advised to check for availability.|



2008 Sep 01 

7

Updated at April 28, 2026

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