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RT8122-85-0M4
Common Mode Choke, 400µH, 85A, Board Mount, Horizontal, RT Series
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: TE CONNECTIVITY - SCHAFFNER
- Product type: Radial Leaded Common Mode Chokes / Filters
- SVHC: No SVHC (25-Jun-2025)
- Inductance: 400µH
- Product Range: RT Series
- DC Current Rating: 85A
- DC Resistance Max: 610µohm
- Operating Temperature Max: 125°C
- Operating Temperature Min: -40°C
| Delivery and price | |
|---|---|
| Units per pack | 20 |
| Price | 23.38 € |
| Current stock | 25+ |
| Lead time | 30 days |
Datasheet
**DATA** SHEET **EMC / RFI Ch okes RT series**
## **Current-Compensated Chokes - Ferrite Core**
Rated currents from 6 to 85 A
Approvals & Compliances pe
Up to 600 VAC and VDC
2- and 3-wire configurations Horizontal and vertical PCB mounting types Ruggedized saturation and thermal behavior Open construction for forced and convection cooling
Straightforward pin-out for easy PCB design Ferrite Core Technologygy
Ferrite Core Technologygy bc me | “TL| | ~~sg.~~ Performance indicators ~~P~~ e
Performance indicators Inductance value [mH] 0.2 - 2.5 : Rated current [A] 25 85
## **Technical Specifications**
6 to 85 A @ 60°C DC to 400 Hz
**Rated currents**
**Operating frequency Creepage and clearance distances**
Creepage & Clearance (2-line): ≥ 3.5 mm (Coil - Coil) / ≥ 3.0 mm (Coil-Core) Creepage & Clearance (3-line): ≥ 6.3 mm (Coil - Coil) / ≥ 5.5 mm (Coil-Core)
3 kV DC 3s (coil to coil) Repetition with max. 80% of the HV test voltage
**High potential test voltage**
0.2 to 6 mH (3-line) 0.4 to 10 mH (2-line)
**Rated inductance**
300 VAC/425 VDC (2-line) 600 VAC (3-line) III (acc. IEC 60664-1) PD2 (acc. IEC60664-1)
**Operating voltage**
**Overvoltage category Pollution degree Stray inductance Temperature range (operation and storage)**
Max. 1% of rated inductance (@ 100 kHz 1 V, 0 A) -40°C to +100°C (6 to 20 A) / -40°C to +125°C (25 to 63 A)
40/100/56 (acc. IEC 60068-1) (6 to 20 A) / 40/125/56 (acc. IEC 60068-1) (25 to 63 A) 2'000 m, current and voltage derating above UL 94 V0 3M4 (according IEC 60721-3-3) UL/IEC 60938-1/-2 UL1446 (>20A) >2,000,000 h @ 60°C/300 V
**Climatic category**
## **Altitude**
**Flammability corresponding to Vibration and shock Design c orresponding to**
**MTBF (Mil-HB- 217F)**
EIS applicable for currents > 20A
RT common-mode chokes are mainly used to filter EMI noise on AC power lines up to 600 VAC. EMI noise of electronic equipment can go to the power lines and disturb the proper function of other devices like communication devices or control logic of robotics. Thus noise generated by the equipment from switched power electronics or by high slew rates of controllers needs to be filtered. RT common-mode chokes are used to suppress EMI noise in PCB integrated filter designs with line bypass capacitors or in combination with single phase filters for extra low leakage filter designs.
## **Features and Benefits**
Cost-effective PCB designs for up to 135 A with forced cooling *
EIS (electrical insulation system E332676) for currents > 20A acc. to UL 1446 Compact size and light weight Low magnetic leakage flux Excellent winding insulation Standardized foot print Broad range of inductance ratings Custom-specific versions on request
## **Typical Applications**
AC and DC filtering for midsize power range drives, photovoltaic inverters, fast chargers, EV charging stations, heat pumps, UPS and switch mode power supplies
Filter with low leakage current noise or improved immunity against grid disturbances Electronic devices, automation and (industrial) LED lighting Communication devices Medical and laboratory equipment Converters
**Schaffner Group DATA** SHEET 06. Jun 2025
2 EMC / RFI Chokes
## **RT Series**
||Convection cooling<br>nominal current @<br>60°C [A]|*Forced cooling 3 m/s<br>nominal current @<br>60°C [A]|Inductance Ln @ 25°C<br>10kHz|Resistance @ 25°C|***Ø Pin|Weight|
|---|---|---|---|---|---|---|
||||[mH/path]|[mΩ/path]|±0.1 ØP [mm]|[g]|
|Horizontal 2-line|||||||
|RT8122-6-10M0|6|9.5|10|33|1.1|80|
|RT8122-8-8M0|8|12.5|8|21|1.3|80|
|RT8122-10-6M0|10|16|6|16|1.4|80|
|RT8122-12-5M0|12|19|5|14|1.5|100|
|RT8122-16-4M0|16|27|4|10|1.8|110|
|RT8122-20-3M0|20|32|3|7|2|160|
|RT8122-25-2M5|25|40|2.5|4.6|2.2|140|
|RT8122-32-1M5|32|51|1.5|3.4|2.4|200|
|RT8122-40-1M2|40|64|1.2|2.2|2.8|210|
|RT8122-50-1M0|50|80|1|1.7|2x 2.2|270|
|RT8122-63-0M5|63|100|0.5|1.1|2x 2.2|260|
|RT8122-85-0M4|85|135|0.4|0.61|2x 3.0|330|
||||||||
|Vertical 2-line|||||||
|RT8522-6-10M0|6|9.5|10|33|1.1|70|
|RT8522-8-8M0|8|12.5|8|21|1.3|80|
|RT8522-10-6M0|10|16|6|16|1.4|80|
|RT8522-12-5M0|12|19|5|14|1.5|90|
|RT8522-16-4M0|16|27|4|10|1.8|110|
|RT8522-20-3M0|20|32|3|7|2|150|
|RT8522-25-2M5|25|40|2.5|4.4|2.2|160|
|RT8522-32-1M5|32|51|1.5|3.4|2.4|210|
|RT8522-40-1M2|40|64|1.2|2.2|2.8|220|
|RT8522-50-1M0|50|80|1|1.7|2x 2.2|280|
|RT8522-63-0M5|63|100|0.5|1|2x 2.2|270|
|RT8522-85-0M4|85|135|0.4|0.7|2x 3.0|340|
||||||||
|Horizontal 3-line|||||||
|RT8132-6-6M0|6|9.5|6|27|1.1|80|
|RT8132-8-4M8|8|12.5|4.8|17|1.3|90|
|RT8132-10-4M0|10|16|4|15|1.5|110|
|RT8132-12-3M6|12|19|3.6|12|1.6|120|
|RT8132-16-3M0|16|27|3|8|1.8|170|
|RT8132-20-2M5|20|32|2.5|7|2.1|190|
|RT8132-25-1M5|25|40|1.5|3.5|2.4|240|
|RT8132-32-1M2|32|51|1.2|2.5|2.4|240|
|RT8132-40-0M7|40|64|0.7|1.9|2x 1.9|270|
|RT8132-50-0M5|50|80|0.5|1.2|2x 2.2|290|
|RT8132-63-0M3|63|100|0.3|0.7|2x 2.6|300|
|RT8132-85-0M2|85|135|0.2|0.5|2x 3.0|360|
||||||||
|Vertical 3-line|||||||
|RT8532-6-6M0|6|9.5|6|27|1.1|90|
|RT8532-8-4M8|8|12.5|4.8|17|1.3|90|
|RT8532-10-4M0|10|16|4|15|1.5|110|
|RT8532-12-3M6|12|19|3.6|12|1.6|120|
|RT8532-16-3M0|16|27|3|8|1.8|160|
|RT8532-20-2M5|20|32|2.5|7|2.1|190|
|RT8532-25-1M5|25|40|1.5|3.5|2.4|250|
|RT8532-32-1M2|32|51|1.2|2.5|2.4|250|
|RT8532-40-0M7|40|64|0.7|1.9|2x 1.9|290|
|RT8532-50-0M5|50|80|0.5|1.2|2x 2.2|290|
|RT8532-63-0M3|63|100|0.3|0.8|2x 2.6|310|
|RT8532-85-0M2|85|135|0.2|0.5|2x 3.0|370|
Test conditions: Inductance tolerance: +50%, –30%; Resistance tolerance: +15% @ 25°C; Electrical characteristics @ 25°C: ±2°C
* typical current for forced cooling with 3 m/s. Due to the possible turbulences and degradation of the air stream within an equipment please consider thermal validation.
** typical stray inductance, max is 0.1% of Ln
*** Length of pin (Dimension P) is always 5.5 mm ± 1
**Schaffner Group DATA** SHEET 06. Jun 2025
3 EMC / RFI Chokes
## Product selector
RT8xxx-xx-xMx
Inductance value (e.g. 1M2 = 1.2mH) Nominal input current [A] 1: nanocrystalline core 2: ferrite core 2: 2–line choke 3: 3–line choke 1: Horizontal 5: Vertical
RT: Schaffner standard ring core choke series “RT”
Examples: RT8532-16-3M0: Vertical 3-line choke for 16 A, with 3 mH ; RT8122-20-3M0: Horizontal 2-line choke for 20 A, with 3 mH
## **Distribution Inventory**
Up-to-date inventory levels for global distributors is available at
https://products.schaffner.com/stock
**Schaffner Group DATA** SHEET 06. Jun 2025
4 EMC / RFI Chokes
## **Typical Choke Attenuation And Impedance - 2-Line Versions**
Per CISPR 17; 50 Ω/50 Ω asym
## RT8x22-6-10M
RT8x22-8-8M0
RT8x22-10-6M0
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RT8x22-12-5M0
RT8122-16-4M0
RT8122-20-3M0
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RT8x22-25-2M5
RT8x22-32-1M5
RT8x22-40-1M2
**==> picture [171 x 139] intentionally omitted <==**
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dB<br>35<br>30<br>25<br>20<br>15<br>10<br>5<br>0<br>10k 100k 1M 10M<br>**----- End of picture text -----**<br>
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**----- Start of picture text -----**<br>
RT8x22-50-1M0<br>**----- End of picture text -----**<br>
RT8x22-63-0M5
RT8x22-85-0M4
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**----- Start of picture text -----**<br>
dB<br>35<br>30<br>25<br>20<br>15<br>10<br>5<br>0<br>10k 100k 1M 10M<br>**----- End of picture text -----**<br>
**Schaffner Group DATA** SHEET 06. Jun 2025
5 EMC / RFI Chokes
## **Typical Choke Attenuation And Impedance - 3-Line Versions**
Per CISPR 17; 50 Ω/50 Ω asym
RT8x32-6-6M0
RT8x32-8-4M8
RT8x32-10-4M0
**==> picture [654 x 161] intentionally omitted <==**
RT8x32-12-3M6
RT8x32-16-3M0
RT8x32-20-2M5
**==> picture [654 x 160] intentionally omitted <==**
RT8x32-25-1M5
RT8x32-32-1M2
RT8x32-40-0M7
**==> picture [654 x 160] intentionally omitted <==**
RT8x32-50-0M5
RT8x32-63-0M3
RT8x32-85-0M2
**==> picture [427 x 155] intentionally omitted <==**
**==> picture [181 x 142] intentionally omitted <==**
**----- Start of picture text -----**<br>
dB<br>35<br>30<br>25<br>20<br>15<br>10<br>5<br>0<br>10k 100k 1M 10M Hz<br>**----- End of picture text -----**<br>
**Schaffner Group DATA** SHEET 06. Jun 2025
6 EMC / RFI Chokes
## **Mechanical Data: Horizontal Chokes (2-line And 3-line) 6A - 20A**
All dimensions in mm; 1 inch = 25.4 mm Tolerances according: ISO 2768-m/EN 22768-m
**==> picture [631 x 325] intentionally omitted <==**
**----- Start of picture text -----**<br>
Horizontal 2-line chokes Horizontal 3-line chokes<br>**----- End of picture text -----**<br>
## **Dimensions**
||**A**<br>(±0.5)|**B**<br>**ØD**<br>(±0.5)<br>(m|ax)<br>(|**H**<br>max)|**ØD1**<br>**ØD**<br>(±0.5)|**2**<br>**ØD3**|**ØE**|
|---|---|---|---|---|---|---|---|
|2-Line Chokes||||||||
|RT8122-6-10M0, RT8122-8-8M0, RT8122-10-6M0|21|25<br>45|3|4|42<br>1.5|2.5|36|
|RT8122-12-5M0, RT8122-16-4M0|26|30<br>51|3|3|48<br>1.9|2.5|40|
|RT8122-20-3M0|32|36<br>57|3|7|54<br>2.1|2.5|43|
|3-Line Chokes||||||||
|RT8132-6-6M0, RT8132-8-4M8|38|-<br>46|3|4|43<br>1.4|2.5|35|
|RT8132-10-4M0,RT8132-12-3M6|44|-<br>51|3|3|48<br>1.7|2.5|40|
|RT8132-16-3M0, RT8132-20-2M5|49|-<br>57|3|7|54<br>2.3|2.5|44|
Pin material: Copper (base), Sn (final plating typical thickness 0.15 mm; composition: Sn-1.2AG-4Cu or SN-3Cu-0.25Ni)
Please visit www.schaffner.com to find more details on filter connections.
**Schaffner Group DATA** SHEET 06. Jun 2025
7 EMC / RFI Chokes
## **Mechanical Data: Vertical Chokes (2-line And 3-line) 6A - 20A**
All dimensions in mm; 1 inch = 25.4 mm Tolerances according: ISO 2768-m/EN 22768-m
**==> picture [631 x 303] intentionally omitted <==**
**----- Start of picture text -----**<br>
Vertical 2-line chokes Vertical 3-line chokes<br>**----- End of picture text -----**<br>
## **Dimensions**
|**Dimensions**|||||||||
|---|---|---|---|---|---|---|---|---|
||**A**<br>**A1**<br>(±0.5)<br>(±0.5)|**B**<br>(±0.5)|**L**<br>(max)|**W**<br>**H**<br>(max)<br>(max)|**L1**<br>**L2**<br>**L3**<br>(±0.5)<br>(±0.5)|**W1**<br>**W2**<br><br>(±0.5)<br>(±0.5)|**ØD2**<br>**ØD3**<br>**X**|**Y**|
|2-Line Chokes|||||||||
|RT8522-6-10M0, RT8522-8-8M0, RT 8522-10-6M0|16<br>-|20|43|32<br>44|32<br>26<br>-|27.8<br>22<br>|1.5<br>2.5<br>3|2.9|
|RT8522-12-5M0, RT8522-16-4M0|16<br>-|22|50|32<br>52|39<br>33<br>-|27<br>23<br>|1.9<br>2.5<br>3|2|
|RT8522-20-3M0|16<br>-|22|56|32<br>57|42<br>35<br>-|31.2<br>25<br>|2.1<br>2.5<br>3.5|3.1|
|3-Line Chokes|||||||||
|RT8532-6-6M0, RT8532-8-4M8|36<br>18|24|44|32<br>47|41<br>27<br>9|29<br>-<br>|1.4<br>1.4<br>2.5|2.5|
|RT8532-10-4M0,RT8532-12-3M6|38<br>19|24|49|34<br>53|46<br>28.5<br>9.5|31<br>-<br>|1.7<br>1.7<br>4|3.5|
|RT8532-16-3M0, RT8532-20-2M5|46<br>23|29|56|37<br>60|53<br>34.5<br>11.5|34<br>-<br>|2.2<br>2.2<br>3.5|2.5|
Pin material: Copper (base), Sn (final plating typical thickness 0.15 mm; composition: Sn-1.2AG-4Cu or SN-3Cu-0.25Ni)
Please visit www.schaffner.com to find more details on filter connections.
> 8 | EMC / RFI Chokes | **Schaffner Group DATA** SHEET 06. Jun 2025
## **Mechanical Data: Horizontal Chokes 25A - 85A**
All dimensions in mm; 1 inch = 25.4 mm Tolerances according: ISO 2768-m/EN 22768-m
**==> picture [572 x 312] intentionally omitted <==**
**----- Start of picture text -----**<br>
Horizontal 2-line chokes Horizontal 3-line chokes<br>Z<br>f GiSeason ARS YY (‘aFI aed<br>9 (g- OCI EIN BSS is af = _ \ \ ——+ 5 / k= ?|~<br>/nae SASOCe Coon (OS ESZ)) Sees ]<br>S00came CLeece | NOSES] h~ (SSCSoan Cet Al<br>\eH ULIS ASH wy) ~ | TW 6 OAARICIOLOCCIS hal<br> AOU e/2 } TL aA} ‘Scr Secon Nii<br>NSCOOLOOEY ee IY eG SST<br>recommended screw for fixation:<br>i” i a ‘ Secon & mark indicates PIN no.<br>\__WNtightening1452 K35torque x 8 1.0 Nm SEE lace 3<br>_<br>mark indicates PIN no. 1 72 Tn > \,\ \ recommended screw for fixation: WN 1482 K35 x8<br>MAX COMPONENT tightening torque 1.0 Nm<br>VOLUME \<br>ZH |<br>| | wy) {—_—_#—] VOLUMEMAX COMPONENT \<br>7| —| (50A / 63A / 85A) —— Cae| - . ! \———-3 || eG| Rint|| Ji]<br>_<br>°. oP (32A / 40A) | | ce Z I va<br>øP (40A / 50A / 63A / 85A) | oP(25A/32A)<br>ø<br>**----- End of picture text -----**<br>
## **Dimensions**
||øD|**Н**|G|ø**Е**|f|g|L|
|---|---|---|---|---|---|---|---|
||±0.2|(max)|±0.1|±0.2|±1°|±1°|±0.5|
|2-Line Chokes||||||||
|RT8122-25-2M5|56|34|0.6|49|15°||5|
|RT8122-32-1M5, RT8122-40-1M2|62|37|0.6|55.4|15°||5|
|RT8122-50-1M0, RT8122-63-0M5|66|41|0.6|59.8|12°|22°|5|
|RT8122-85-0M4|73.5|47|0.6|64.8|12°|22°|5|
|3-Line Chokes||||||||
|RT8132-25-1M5, RT 8132-32-1M2|62|38|0.6|55.4|15°||5|
|RT8132-40-0M7, RT8132 -50-0M5, RT 8132-63-0M3|66|42|0.6|59.8|12°|22°|5|
|RT8132-85-0M2|73.5|46|0.6|64.8|12°|22°|5|
**Schaffner Group DATA** SHEET 06. Jun 2025
9 EMC / RFI Chokes
## **Mechanical Data: Vertical Chokes 25A - 85A**
## All dimensions in mm; 1 inch = 25.4 mm
Tolerances according: ISO 2768-m/EN 22768-m
**==> picture [606 x 340] intentionally omitted <==**
**----- Start of picture text -----**<br>
Vertical 2-line chok Vertical 3-line chokes<br>L<br>P<br>O<br>M S<br>T<br>N<br> 5 3 1<br>a2 6 | I\ \ (Ni Se | | J mA aac a | \ : ie<br>4 2 | lee Op EE II<br>fe es PPP SZ,<br> 6 4 2<br>recommended screw for fixation:<br>mark indic ates PIN no. 1<br>\__WN 1452 K35 x 8 Q \ ~<br>VOLUMEMAX COMPONENT tightening torque 1.0 Nm MA X COMPONENT \ LL rW recommended screw for fixation:ecNo1m4m5e2nK d3a5d xsc8rew for fixation:<br>V OLUME tightening torqu e 1 .0 Nm<br>| ee TmHL 1 UlOT a [ionae I <| S hy |LF iip<br>øP (50A / 63A / 85A) a x øP (32A / 40A) re<br>øP (25A / 32A)<br>øP (40A / 50A / 63A)<br>os U i | fl il UJ<br>B C D<br>ax<br>m<br>H<br>G<br>R<br>**----- End of picture text -----**<br>
## **Dimensions**
|**Dimensions**|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||H|G|**В**|C|D|L|M|N|O|P|Q|S|T|R|
|||±0.1|±0.2|±0.4|±0.2|±0.2|±0.1|±0.4|±0.4|±0.4|±0,4|±0.4|±0.2|±0.5|
|2-Line Chokes|||||||||||||||
|RT8522-25-2M5|55|0.6|36|30|12|55|4||||||||
|RT8522-32-1M5, RT8522-40-1M2|60|0.6|38|32|12|60|4|||52|46|||5|
|RT8522-50-1M0, RT8522-63-0M5|64|0.6|42|36|18|64|4|5|51|56|56|||5|
|RT8522-85-0M4|70|0.6|46|40|18|71|4.5|6|56|62|56|||5|
|3-Line Chokes|||||||||||||||
|RT8532-25-1M5, RT8532-32-1M2|63|0.6|38|32|12|60|4|||52|46||26|5|
|RT8532-40-0M7, RT8532-50-0M5,|67|0.6|42|36|18|64|4|5|51|56|56|30.5|25.5|5|
|RT8532-63-0M3|||||||||||||||
|RT8532-85-0M2|74|0.6|46|40|18|71|4.5|6|56|62|56|34|28|5|
> 10 | EMC / RFI Chokes | **Schaffner Group DATA** SHEET 06. Jun 2025 **Soldering Profile**
## We are here to help
## Read more insights from TE’s experts:
**==> picture [250 x 20] intentionally omitted <==**
**----- Start of picture text -----**<br>
Schafner is now part Learn more about<br>of TE Connectivity Corcom products<br>**----- End of picture text -----**<br>
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TE Connectivity, TE, TE connectivity (logo), and EVERY CONNECTION COUNTS, ECOsine, Schaffner are trademarks owned or licensed by TE Connectivity plc. family of companies. All other logos, products and/ or company names referred to herein might be trademarks of their respective owners.
While TE has made every reasonable effort to ensure the accuracy of the information in this document, TE does not guarantee that it is error-free, nor does TE make any other representation, warranty or guarantee that the information is accurate, correct, reliable or current. TE reserves the right to make any changes to the information contained herein without prior notice. TE Connectivity assumes only those obligations set forth in the terms and conditions for this product and shall in no event be liable for any incidental, indirect, or consequential damages arising out of the sale, resale, use, or misapplication of the product. TE expressly disclaims any implied warranties with respect to the information contained herein, including, but not limited to, implied warranties of merchantability or fitness for a particular purpose. Dimensions, specifications and/ or information contained herein are for reference purposes only and are subject to change without notice. Consult TE for the latest dimensions, specifications and/or information. Users of TE Connectivity products must make their own assessment as to whether the respective product is suitable for the respective desired application.
ED 06/25
Updated at June 10, 2026
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