MSS1246T-822MLB

Power Inductor (SMD), 8.2 µH, 4.67 A, Shielded, 6.84 A, MSS1246T Series

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Manufacturer: COILCRAFT
Product type: SMD Power Inductors
Inductance:8.2µH; RMS Current (Irms):4.67A; Inductor Construction:Shielded; Saturation Current (Isat):6.84A; Product Range:-; Power Inductor Case:12mm x 12mm x 4.6mm; DC Resistance M
Inductance: 8.2µH
Product Range: MSS1246T Series
Product Width: 12mm
Product Height: 4.6mm
Product Length: 12mm
DC Resistance Max: 0.0305ohm
RMS Current (Irms): 4.67A
Power Inductor Case: 12mm x 12mm x 4.6mm
Inductance Tolerance: ± 20%
Inductor Construction: Shielded
Saturation Current (Isat): 6.84A

Delivery and price
Units per pack	1000
Price	0.632 €
Current stock	10+
Lead time	30 days

Datasheet

Document 540-1 

## 

## **SMT Power Inductors – MSS1246T** 

- Designed for high ambient temperatures 

- Magnetic shielding allows high density mounting. 

**Designer’s Kit C417** contains 3 each of all values. 

**Core material** Ferrite 

**Terminations** RoHS compliant matte tin over nickel over phos bronze. Other terminations available at additional cost. 

**Weight:** 2.3 g – 2.5 g 

**Ambient temperature** –40°C to +125°C with I rms current, +125°C to +165°C with derated current 

**Storage temperature** Component: –40°C to +165°C. 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 **Packaging** 200/7″ reel; 800/13″ reel; Plastic tape: 24 mm wide, 0.35 mm thick, 16 mm  pocket spacing, 4.7 mm pocket depth **PCB washing** Only pure water or alcohol recommended 

|**Part number**1<br>MSS1246T-102ML_   1.0 ±20%<br>MSS1246T-152ML_   1.5 ±20%<br>MSS1246T-272ML_   2.7 ±20%<br>MSS1246T-332ML_   3.3 ±20%|**Inductance**2<br>**(µH)**<br>MSS1246T-102ML_   1.0 ±20%<br>MSS1246T-152ML_   1.5 ±20%<br>MSS1246T-272ML_   2.7 ±20%<br>MSS1246T-332ML_   3.3 ±20%|**DCR**3 <br>**(mOhms)**<br>**typ  max**<br>5.6<br>6.3<br>8.7<br>9.7<br>10.3<br>11.5<br>15.1<br>16.8|**DCR**3 <br>**(mOhms)**<br>**typ  max**<br>5.6<br>6.3<br>8.7<br>9.7<br>10.3<br>11.5<br>15.1<br>16.8|**SRF**<br> **typ**4<br>**(MHz) dro**<br>100<br>85.0<br>70.0<br>65.0|**Isat(A)**5**Irms(A)**6<br>**10% 20%**<br>**30% 20°C 40°C**<br>**drop drop drop rise rise**<br>18.14 20.64 22.24 6.00 8.00<br>14.06 15.90 17.08 5.80 7.80<br>11.66 13.16 14.16 5.00 6.80<br>9.74 11.08 11.98 4.50 6.30<br>~~OO~~|
|---|---|---|---|---|---|
|MSS1246T-472ML_4.7 ±20%|4.7 ±20%|19.1|19.1<br>21.3|42.0|8.62<br>9.70 10.42 4.40 6.00|
|MSS1246T-562ML_   5.6 ±20%|MSS1246T-562ML_   5.6 ±20%|22.1|22.1<br>24.6|37.0|7.62<br>8.74 9.44 3.95 5.75|
|MSS1246T-682ML_   6.8 ±20%<br>MSS1246T-822ML_   8.2 ±20%<br>MSS1246T-103ML_  10 ±20%<br>MSS1246T-123ML_12 ±20%|MSS1246T-682ML_   6.8 ±20%<br>MSS1246T-822ML_   8.2 ±20%<br>MSS1246T-103ML_  10 ±20%<br>12 ±20%|24.9<br>27.4<br>36.8<br>38.9|24.9<br>27.7<br>27.4<br>30.5<br>36.8<br>40.9<br>38.9<br>43.3|33.0<br>31.0<br>27.0<br>24.0|7.38<br>8.36 9.00 3.70 5.20<br>6.84<br>7.70 8.32 3.35 4.67<br>5.88<br>6.66 7.18 2.85 3.90<br>5.34<br>6.04 6.52 2.69 3.65|
|MSS1246T-153ML_  15 ±20%<br>MSS1246T-183ML_  18 ±20%|MSS1246T-153ML_  15 ±20%<br>MSS1246T-183ML_  18 ±20%|48.6<br>51.0|48.6<br>54.1<br>51.0<br>56.7|22.0<br>19.0|4.68<br>5.36 5.78 2.50 3.40<br>4.32<br>4.92 5.32 2.41 3.19|
|MSS1246T-223ML_  22 ±20%|MSS1246T-223ML_  22 ±20%|60.3|60.3<br>67.0|18.0|3.84<br>4.34 4.75 2.30 3.14|
|MSS1246T-273ML_  27 ±20%|MSS1246T-273ML_  27 ±20%|67.5|67.5<br>75.0|16.0|3.54<br>4.02 4.32 2.06 2.86|
|MSS1246T-333ML_33 ±20%|33 ±20%|81.7|81.7<br>90.8|15.0|3.24<br>3.66 3.96 1.90 2.60|
|MSS1246T-393ML_  39 ±20%<br>MSS1246T-473ML_  47 ±20%<br>MSS1246T-563ML_  56 ±20%<br>MSS1246T-683ML_  68 ±20%<br>MSS1246T-823ML_82 ±20%<br>MSS1246T-104ML_ 100 ±20%<br>MSS1246T-124KL_  120 ±10%<br>MSS1246T-154KL_  150 ±10%<br>MSS1246T-184KL_  180 ±10%<br>MSS1246T-224KL_220 ±10%|MSS1246T-393ML_  39 ±20%<br>MSS1246T-473ML_  47 ±20%<br>MSS1246T-563ML_  56 ±20%<br>MSS1246T-683ML_  68 ±20%<br>82 ±20%<br>MSS1246T-104ML_ 100 ±20%<br>MSS1246T-124KL_  120 ±10%<br>MSS1246T-154KL_  150 ±10%<br>MSS1246T-184KL_  180 ±10%<br>220 ±10%|95.2 105.8<br>120.6 134.0<br>133.8 148.7<br>167.3 185.9<br>188.5 209.5<br>216.8 240.9<br>287.2 319.2<br>326.7 363.0<br>379.5 421.7<br>488.2 542.5|95.2 105.8<br>120.6 134.0<br>133.8 148.7<br>167.3 185.9<br>188.5 209.5<br>216.8 240.9<br>287.2 319.2<br>326.7 363.0<br>379.5 421.7<br>488.2 542.5|13.3<br>12.0<br>10.6<br>9.7<br>8.8<br>8.0<br>7.2<br>6.6<br>5.9<br>5.3|3.04<br>3.46 3.72 1.73 2.39<br>2.70<br>3.08 3.34 1.50 2.10<br>2.46<br>2.80 3.02 1.44 2.01<br>2.26<br>2.54 2.74 1.30 1.80<br>1.98<br>2.26 2.46 1.24 1.72<br>1.84<br>2.08 2.24 1.19 1.65<br>1.62<br>1.86 2.04 1.03 1.42<br>1.48<br>1.70 1.82 0.95 1.30<br>1.36<br>1.56 1.68 0.89 1.21<br>1.22<br>1.38 1.50 0.76 1.00|
|MSS1246T-274KL_  270 ±10%|MSS1246T-274KL_  270 ±10%|560.1 622.4|560.1 622.4|4.7|1.12<br>1.26 1.36 0.72 0.95|
|MSS1246T-334KL_  330 ±10%|MSS1246T-334KL_  330 ±10%|731.4 812.7|731.4 812.7|4.1|1.00<br>1.10 1.20 0.65 0.87|
|MSS1246T-394KL_  390 ±10%|MSS1246T-394KL_  390 ±10%|813.7 904.2|813.7 904.2|3.8|0.946 1.00 1.10 0.59 0.79|
|MSS1246T-474KL_  470 ±10%|MSS1246T-474KL_  470 ±10%|935.1 1039|935.1 1039|3.5|0.864 0.978 1.00 0.56 0.76|
|MSS1246T-564KL_560 ±10%|560 ±10%|1193|1326|3.0|0.776 0.884 0.956 0.50 0.67|
|MSS1246T-684KL_  680 ±10%|MSS1246T-684KL_  680 ±10%|1370|1523|2.8|0.720 0.818 0.882 0.46 0.62|
|MSS1246T-824KL_  820 ±10%|MSS1246T-824KL_  820 ±10%|1590|1767|2.6|0.634 0.728 0.792 0.43 0.58|
|MSS1246T-105KL_ 1000 ±10%|MSS1246T-105KL_ 1000 ±10%|2090|2323|2.4|0.594 0.676 0.728 0.36 0.50|



1. Please specify **termination** and **packaging** codes: 

~~—~~ **MSS1246T-105KLD** 

- **Termination: L** = RoHS compliant matte tin over nickel over phos bronze. Special order: 

      - **T** = RoHS tin-silver-copper (95.5/4/0.5) or **S** = non-RoHS tin-lead (63/37). 

- **Packaging: C** = 7″ machine-ready reel. EIA-481 embossed plastic tape (200 parts per full reel). 

   - **B** = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter C instead. 

   - **D** = 13″ machine-ready reel. EIA-481 embossed plastic tape (800 parts per full reel). 

2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using a Coilcraft SMD -A fixture in an Agilent/ HP 4263B LCR meter or equivalent. 

3. DCR measured on a micro-ohmmeter and a Coilcraft CCF858 test fixture. 

4. SRF measured using an Agilent/HP 8753D network analyzer and a Coilcraft SMD -D test fixture. 

5. DC current at which the inductance drops the specified amount from its value without current. 

6. Current that causes the specified temperature rise from 25°C ambient. 

7. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 

Document 540-1 Revised 08/18/11 

Document 540-2 

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## 

## **SMT Power Inductors – MSS1246T** 

## **Typical L vs Frequency** 

## **Typical L vs Current** 

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10000<br>1000 µH<br>1000<br>100 µH<br>100<br>10 µH<br>10<br>1 µH<br>1<br>0.1<br>0.01 0.1 1 10<br>Frequency (MHz)<br>Inductance (µH)<br>**----- End of picture text -----**<br>


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10000<br>1000 µH<br>1000<br>100 µH<br>100<br>10 µH<br>10<br>1 µH<br>1<br>0.1<br>0.1 1 10 100<br>Current (A)<br>Inductance (µH)<br>**----- End of picture text -----**<br>


## **Current Derating** 

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120<br>110<br>100<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20<br>Isat<br>10<br>Irms<br>0<br>-40 -20 0 20 40 60 80 100 120 140 160 180<br>Ambient temperature (°C)<br>Percent of rated Current 25°C<br>**----- End of picture text -----**<br>


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Dimensions are in [inches ]<br>mm<br>**----- End of picture text -----**<br>


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Document 540-2 Revised 08/18/11 

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Updated at March 10, 2026

Coilcraft is a globally recognized leader in the design and manufacture of high-performance magnetic components. Renowned for its engineering excellence, reliable delivery, and stringent quality standards, the company provides essential solutions for a wide array of demanding applications, including signal processing, RF, power management, and timing circuits. Our comprehensive portfolio of Coilcraft components is centered on their industry-leading inductor technologies. This encompasses a vast selection of high-efficiency power inductors designed to optimize modern power supply architectures, alongside precision RF inductors engineered to deliver exceptional stability and performance in high-frequency communications and wireless applications. To support complete electromagnetic compatibility and comprehensive circuit design, we also offer a variety of Coilcraft's specialized magnetic solutions. This includes robust common mode chokes and filters for effective EMC and RFI suppression, current sensing transformers, and a selection of inductor kits and assortments that provide design engineers with versatile options for rapid prototyping and development.

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