# Choke, Common Mode, 31 nH, 1206USB Series, 37 ohm, 1 A, 3.2mm x 1.6mm x 1.83mm

![Product image](https://novapart.co/image/farnell:2458108/)

**URL**: https://novapart.co/products/1206USB-371MLB/choke-common-mode-31-nh-1206usb-series-37-ohm-1-a
**SKU**: 1206USB-371MLB
**Manufacturer**: COILCRAFT
**Category**: Passive Components || EMC / RFI Suppression || Common Mode Chokes / Filters || SMD Common Mode Chokes / Filters
**Price**: €0.4880
**Stock**: 500+
**Lead Time**: 64 days (indicative)

## Description

Rated Current:1A; Inductance:31nH; Product Range:1206USB Series; Impedance:37ohm; Common Mode Filter Case:3.2mm x 1.6mm x 1.83mm; Automotive Qualification Standard:-; SVHC:No SVHC (15-Jan-2

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Impedance | 37ohm |
| Inductance | 31nH |
| Product Range | 1206USB Series |
| Product Width | 1.6mm |
| Qualification | - |
| Product Height | 1.83mm |
| Product Length | 3.2mm |
| Dc Current Rating | 1A |
| Dc Resistance Max | 0.1ohm |
| Common Mode Filter Case | 3.2mm x 1.6mm x 1.83mm |
| Inductor Case / Package | - |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2458108/)

Document 386-1 

## **USB 2.0 Common Mode Choke 1206** 

Eliminates virtually all common mode noise in high-speed, differential mode signal transmission applications such as USB 2.0, IEEE1394, HDMI and LVDS. Most provide >30 dB common mode attenuation and >100 ohms impedance. 

**Designer’s Kit C384** contains 10 each of all 0603USB, 0805USB and 1206USB parts 

**Core material** Ferrite 

**Environmental** RoHS compliant, halogen free 

**Terminations** Gold over nickel over silver-palladium-glass frit. **Ambient temperature** –40°C to +85°C with I rms current **Storage temperature** Component: –40°C to +85°C. Tape and reel packaging: –40°C to +80°C 

**Resistance to soldering heat** Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles 

**Moisture Sensitivity Level (MSL)** 1 (unlimited floor life at <30°C / 85% relative humidity) 

## **Failures in Time (FIT) / Mean Time Between Failures (MTBF)** 

38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 **PCB washing** Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf 

**==> picture [504 x 300] intentionally omitted <==**

**----- Start of picture text -----**<br>
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|Common mode|Common mode|
|impedance typ|(Ohms)|attenuation typ|(dB)|Inductance|2|DCR max|3|Isolation|Irms|4|
|Part number|1|10 MHz 100 MHz 500 MHz|10 MHz 100 MHz 500 MHz|min (nH)|(Ohms)|(Vrms)|(mA)|
|1206USB-371ML_|15|37|95|1.0|2.1|12.0|31|0.10|250|1000|
|1206USB-102ML_|30|100|200|1.5|4.2|19.0|66|0.14|250|850|
|1206USB-172ML_|55|170|345|2.3|6.8|26.0|107|0.18|250|700|
|1206USB-262ML_|85|265|545|3.0|9.7|31.0|161|0.22|250|600|
|1206USB-372ML_|125|370|775|4.7|12.0|33.0|226|0.26|250|600|
|1206USB-532ML_|170|530|1190|5.5|15.0|35.0|319|0.30|250|600|
|1206USB-672ML_|200|670|1500|7.3|16.5|33.0|412|0.34|250|500|
|1206USB-872ML_|265|870|2010|9.1|18.0|32.0|510|0.39|250|500|
|1206USB-113ML_|330|1100|2425|10.2|21.0|31.0|623|0.44|250|500|
|1. When ordering, please specify|packaging|code:|0.126 ±0.004|1|2|
|3,20 ±0,10|
|1206USB-113MLC|||||“enon|
|Packaging: C|= 7″|machine-ready reel.|EIA-481 embossed plas-|————__—_ti“(is;é‘“CC*zq|0.072|±0.004|—__——|
|tic tape (2000 parts per full reel).|1,83|±0,10|
|B|= Less than full reel. In tape, but not machine ready.|TiEXXXY|xxx||.—|4|Foon),|3|
|To have a leader and trailer added ($25 charge),|0.006|
|use code letter C instead.|0,15|
|D|= 13″|machine-ready reel.|EIA-481 embossed|0.028|0.070|0.024|0.038|0.064|
|plastic tape (7500 parts per full reel).|0,71|1,78|0,61|0,97|1,63|0.015|
|2. Inductance measured at 100 MHz using an Agilent/HP 4286A|2|1|0,38|
|impedance analyzer and a Coilcraft SMD-A fixture.|1|2|
|3.  DCR is specified per winding.|0.063|±0.004|
|4. Current per winding that causes a 20°C rise from 25°C ambient.|1,60|±0,10|
|5. Operating temperature range 6. Electrical specifications at 25°C.Refer to Doc 362 “Soldering Surface Mount Components” before soldering.−40°C to 85°C.|Dimensions are in 4|[inches ]|mm3|Recommended|3|Land Pattern|4|0.0260,66|

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


1. When ordering, please specify **packaging** code: 

2. Inductance measured at 100 MHz using an Agilent/HP 4286A impedance analyzer and a Coilcraft SMD-A fixture. 

3.  DCR is specified per winding. 

4. Current per winding that causes a 20°C rise from 25°C ambient. 

- −40°C to 85°C.40°C to 85°C. 

**Weight:** 36.2 – 37.6 mg 

**Packaging** 2000/7″ reel; 7500/13″ reel Plastic tape: 8 mm wide, 0.3 mm thick, 4 mm pocket spacing, 1.9 mm pocket depth 

Document 386-1 Revised 07/13/10 

© Coilcraft Inc. 2013 

**US** +1-847-639-6400   sales@coilcraft.com **UK** +44-1236-730595   sales@coilcraft-europe.com **Taiwan** +886-2-2264 3646   sales@coilcraft.com.tw **China** +86-21-6218 8074   sales@coilcraft.com.cn **Singapore** + 65-6484 8412   sales@coilcraft.com.sg 

This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. 

Document 386-2 

## **— USB 2.0 Common Mode Filter 1206** 

## **Typical Attenuation (Ref: 50 Ohms)** 

**==> picture [497 x 280] intentionally omitted <==**

**----- Start of picture text -----**<br>
0<br>5<br>10<br>-113<br>15<br>-872<br>-672<br>20<br>-532<br>-372<br>25<br>-262<br>-172<br>30<br>-102<br>-371<br>35<br>40<br>Common mode<br>Differential mode (typical for all parts)<br>45<br>1 10 100 1000<br>Frequency (MHz)<br>Attenuation (dB)<br>**----- End of picture text -----**<br>


## **Typical Impedance vs Frequency** 

**==> picture [496 x 281] intentionally omitted <==**

**----- Start of picture text -----**<br>
10000<br>1000<br>-372<br>-532<br>-672<br>-872<br>-113<br>100<br>10<br>-371<br>-102<br>-172<br>-262<br>1<br>1 10 100 1000<br>Frequency (MHz)<br>Impedance (Ohms)<br>**----- End of picture text -----**<br>


**==> picture [117 x 44] intentionally omitted <==**

**US** +1-847-639-6400   sales@coilcraft.com **UK** +44-1236-730595   sales@coilcraft-europe.com **Taiwan** +886-2-2264 3646   sales@coilcraft.com.tw **China** +86-21-6218 8074   sales@coilcraft.com.cn **Singapore** + 65-6484 8412   sales@coilcraft.com.sg 

Document 386-2 Revised 07/13/10 

© Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. 



## Links

- [View this product on Novapart](https://novapart.co/products/1206USB-371MLB/choke-common-mode-31-nh-1206usb-series-37-ohm-1-a)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/coilcraft/1206usb-371mlb/filter-common-mode-31nh-1a/dp/2458108)
---

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