MSS1278T-153MLD

Power Inductor (SMD), 15 µH, 4.9 A, Shielded, 8.36 A, MSS1278T Series

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Manufacturer: COILCRAFT
Product type: SMD Power Inductors
Inductance:15µH; RMS Current (Irms):4.9A; Inductor Construction:Shielded; Saturation Current (Isat):8.36A; Product Range:MSS1278T Series; Power Inductor Case:12mm x 12mm x 7.8mm; DC
SVHC: No SVHC (25-Jun-2025)
Inductance: 15µH
Product Range: MSS1278T Series
Product Width: 12mm
Product Height: 7.8mm
Product Length: 12mm
DC Resistance Max: 0.031ohm
RMS Current (Irms): 4.9A
Inductance Tolerance: ± 20%
Inductor Construction: Shielded
Inductor Case / Package: -
Saturation Current (Isat): 8.36A

Delivery and price
Units per pack	500
Price	1.22 €
Current stock	200+
Lead time	30 days

Datasheet

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Document 598-1 

AEC Q200 +125°C 

## **MSS1278T High Temp Power Inductors** 

- Designed for high ambient temperatures 

- Magnetic shielding, very low DCR, excellent current handling 

**Designer’s Kit C419** contains 3 of each value **Core material** Ferrite 

**Core and winding loss** See www.coilcraft.com/coreloss **Terminations** RoHS compliant matte tin over nickel over phos bronze. Other terminations available at additional cost. **Weight:** 3.8 g – 4.6 g 

**Ambient temperature** –40°C to +125°C with (40°C rise) I rms current. **Maximum part temperature** +165°C (ambient + temp rise). Derating. **Storage temperature** Component: –40°C to +165°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) 

**Packaging** 500/13″ reel; Plastic tape: 24 mm wide, 0.5 mm thick, 16 mm pocket spacing, 8.7 mm pocket depth 

**PCB washing** Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf. 

|**DCR**3 <br> **Inductance**2  **(mOhms) **<br>  **Part number**1<br>**(µH)**<br>**typ**<br>**max**<br>MSS1278T-102NL_    1.0 ±30%<br>6.3<br>7.0 115<br>MSS1278T-142NL_    1.4 ±30%<br>8.8<br>9.8<br>MSS1278T-222NL_    2.2 ±30%<br>9.4<br>10.5<br>MSS1278T-272NL_    2.7 ±30%<br>10.1<br>11.3|**DCR**3 <br> **Inductance**2  **(mOhms) **<br>  **Part number**1<br>**(µH)**<br>**typ**<br>**max**<br>MSS1278T-102NL_    1.0 ±30%<br>6.3<br>7.0 115<br>MSS1278T-142NL_    1.4 ±30%<br>8.8<br>9.8<br>MSS1278T-222NL_    2.2 ±30%<br>9.4<br>10.5<br>MSS1278T-272NL_    2.7 ±30%<br>10.1<br>11.3|**DCR**3 <br> **Inductance**2  **(mOhms) **<br>  **Part number**1<br>**(µH)**<br>**typ**<br>**max**<br>MSS1278T-102NL_    1.0 ±30%<br>6.3<br>7.0 115<br>MSS1278T-142NL_    1.4 ±30%<br>8.8<br>9.8<br>MSS1278T-222NL_    2.2 ±30%<br>9.4<br>10.5<br>MSS1278T-272NL_    2.7 ±30%<br>10.1<br>11.3|**DCR**3 <br> **Inductance**2  **(mOhms) **<br>  **Part number**1<br>**(µH)**<br>**typ**<br>**max**<br>MSS1278T-102NL_    1.0 ±30%<br>6.3<br>7.0 115<br>MSS1278T-142NL_    1.4 ±30%<br>8.8<br>9.8<br>MSS1278T-222NL_    2.2 ±30%<br>9.4<br>10.5<br>MSS1278T-272NL_    2.7 ±30%<br>10.1<br>11.3|**SRF**<br> **typ**4<br>**(MHz) dro**<br>7.0 115<br>85<br>60<br>40|**Isat(A)**5<br>**Irms(A)**6<br>**10%**<br>**20%**<br>**30% 20°C 40°C**<br>**drop drop**<br>**drop**<br>**rise rise**<br>31.84 35.04 36.84<br>7.1 10.1<br>25.04 27.76 29.52<br>6.8<br>9.8<br>22.56 24.80 25.96<br>6.3<br>9.2<br>18.76 20.72 22.04<br>6.1<br>8.6|**Isat(A)**5<br>**Irms(A)**6<br>**10%**<br>**20%**<br>**30% 20°C 40°C**<br>**drop drop**<br>**drop**<br>**rise rise**<br>31.84 35.04 36.84<br>7.1 10.1<br>25.04 27.76 29.52<br>6.8<br>9.8<br>22.56 24.80 25.96<br>6.3<br>9.2<br>18.76 20.72 22.04<br>6.1<br>8.6|**Isat(A)**5<br>**Irms(A)**6<br>**10%**<br>**20%**<br>**30% 20°C 40°C**<br>**drop drop**<br>**drop**<br>**rise rise**<br>31.84 35.04 36.84<br>7.1 10.1<br>25.04 27.76 29.52<br>6.8<br>9.8<br>22.56 24.80 25.96<br>6.3<br>9.2<br>18.76 20.72 22.04<br>6.1<br>8.6|**Isat(A)**5<br>**Irms(A)**6<br>**10%**<br>**20%**<br>**30% 20°C 40°C**<br>**drop drop**<br>**drop**<br>**rise rise**<br>31.84 35.04 36.84<br>7.1 10.1<br>25.04 27.76 29.52<br>6.8<br>9.8<br>22.56 24.80 25.96<br>6.3<br>9.2<br>18.76 20.72 22.04<br>6.1<br>8.6|1. Please specify**termination**and**packaging**codes:<br>**MSS1278T-105KLD**<br>**Termination: L**=RoHS compliant matte tin over<br>nickel over phos bronze.<br>**Special order:**<br>**T**= RoHS tin-silver-copper<br>(95.5/4/0.5) or**S**= non-RoHS|1. Please specify**termination**and**packaging**codes:<br>**MSS1278T-105KLD**<br>**Termination: L**=RoHS compliant matte tin over<br>nickel over phos bronze.<br>**Special order:**<br>**T**= RoHS tin-silver-copper<br>(95.5/4/0.5) or**S**= non-RoHS|1. Please specify**termination**and**packaging**codes:<br>**MSS1278T-105KLD**<br>**Termination: L**=RoHS compliant matte tin over<br>nickel over phos bronze.<br>**Special order:**<br>**T**= RoHS tin-silver-copper<br>(95.5/4/0.5) or**S**= non-RoHS|1. Please specify**termination**and**packaging**codes:<br>**MSS1278T-105KLD**<br>**Termination: L**=RoHS compliant matte tin over<br>nickel over phos bronze.<br>**Special order:**<br>**T**= RoHS tin-silver-copper<br>(95.5/4/0.5) or**S**= non-RoHS|1. Please specify**termination**and**packaging**codes:<br>**MSS1278T-105KLD**<br>**Termination: L**=RoHS compliant matte tin over<br>nickel over phos bronze.<br>**Special order:**<br>**T**= RoHS tin-silver-copper<br>(95.5/4/0.5) or**S**= non-RoHS|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|MSS1278T-392NL_3.9 ±30%|3.9 ±30%|3.9 ±30%<br>11.7|11.7<br>13.0|35|16.52 18.24 19.20|16.52 18.24 19.20|5.7|7.7|tin-lead (63/37).|||||
|MSS1278T-472ML_   4.7 ±20%|MSS1278T-472ML_   4.7 ±20%|MSS1278T-472ML_   4.7 ±20%<br>13.9|13.9<br>15.5|33|15.30 16.90 17.76|15.30 16.90 17.76|4.3|6.2|**Packaging: D**= 13″ machine-ready reel. EIA-481|||||
|MSS1278T-562ML_   5.6 ±20%|MSS1278T-562ML_   5.6 ±20%|MSS1278T-562ML_   5.6 ±20%<br>15.7|15.7<br>17.5|30|13.38 14.86 15.74|13.38 14.86 15.74|4.3|6.2|embossed plastic tape (500 parts||embossed plastic tape (500 parts|||
|MSS1278T-682ML_   6.8 ±20%<br>MSS1278T-822ML_   8.2 ±20%<br>MSS1278T-103ML_10 ±20%<br>MSS1278T-123ML_  12 ±20%<br>MSS1278T-153ML_  15 ±20%<br>MSS1278T-183ML_  18 ±20%<br>MSS1278T-223ML_  22 ±20%<br>MSS1278T-273ML_27 ±20%|MSS1278T-682ML_   6.8 ±20%<br>MSS1278T-822ML_   8.2 ±20%<br>10 ±20%<br>MSS1278T-123ML_  12 ±20%<br>MSS1278T-153ML_  15 ±20%<br>MSS1278T-183ML_  18 ±20%<br>MSS1278T-223ML_  22 ±20%<br>27 ±20%|MSS1278T-682ML_   6.8 ±20%<br>19.1<br>MSS1278T-822ML_   8.2 ±20%<br>20.3<br>21.8<br>23.2<br>27.9<br>30.8<br>35.5<br>45.0|19.1<br>21.3<br>20.3<br>22.6<br>21.8<br>24.3<br>23.2<br>25.8<br>27.9<br>31.0<br>30.8<br>34.3<br>35.5<br>39.5<br>45.0<br>50.0|23<br>20<br>17<br>15<br>13<br>12<br>11<br>10|12.10 13.56 14.20<br>11.38 12.60 13.28<br>10.62 11.82 12.48<br>8.90<br>8.36<br>8.00<br>7.08<br>6.32|12.10 13.56 14.20<br>11.38 12.60 13.28<br>10.62 11.82 12.48<br>8.90<br>9.88 10.44<br>8.36<br>9.32<br>9.94<br>8.00<br>8.88<br>9.36<br>7.08<br>7.88<br>8.34<br>6.32<br>7.08<br>7.54|4.2<br>4.1<br>4.0<br>3.7<br>3.5<br>3.0<br>2.9<br>2.6|6.0<br>5.9<br>5.7<br>5.2<br>4.9<br>4.5<br>4.0<br>3.6|per full reel). Quantities less than<br>full reel available: in tape (not<br>machine ready) or with leader<br>and trailer ($25 charge).<br>**B**= Less than full reel. In an effort<br>to simplify our part numbering<br>system, Coilcraft is eliminating<br>the need for multiple packaging<br>codes. When ordering, simply|||||
|MSS1278T-333ML_  33 ±20%|MSS1278T-333ML_  33 ±20%|61.9|61.9<br>68.8|9.5|5.96|5.96<br>6.56<br>6.98|2.3|3.1|change the last letter of your|||change the last letter of your||
|MSS1278T-393ML_  39 ±20%|MSS1278T-393ML_  39 ±20%|69.1|69.1<br>76.8|8.5|5.38|5.38<br>5.94<br>6.28|2.1|3.0|part number from B to D.|||||
|MSS1278T-473ML_  47 ±20%|MSS1278T-473ML_  47 ±20%|72.3|72.3<br>80.4|7.5|4.76|4.76<br>5.40<br>5.66|2.0|2.9|2. Inductance tested at 100 kHz, 0.1 Vrms, 0 Adc using|||||
|MSS1278T-563ML_  56 ±20%|MSS1278T-563ML_  56 ±20%|80.2|80.2<br>89.2|7.0|4.40|4.40<br>4.98<br>5.30|1.9|2.7|an Agilent/HP 4263B LCR meter or equivalent.|an Agilent/HP 4263B LCR meter or equivalent.||||
|MSS1278T-683ML_68 ±20%|68 ±20%|91.3 101.5|91.3 101.5|6.5|3.92|3.92<br>4.46<br>4.74|1.8|2.6|3. DCR measured on a micro-ohmmeter and a|||||
|MSS1278T-823ML_  82 ±20%|MSS1278T-823ML_  82 ±20%|125.9 139.9|125.9 139.9|5.0|3.66|3.66<br>4.08<br>4.38|1.6|2.3|Coilcraft CCF858 test fixture.|||||
|MSS1278T-104ML_ 100 ±20%<br>MSS1278T-124KL_  120 ±10%<br>MSS1278T-154KL_  150 ±10%|MSS1278T-104ML_ 100 ±20%<br>MSS1278T-124KL_  120 ±10%<br>MSS1278T-154KL_  150 ±10%|135.1 150.2<br>182.3 202.6<br>216.5 240.6|135.1 150.2<br>182.3 202.6<br>216.5 240.6|4.5<br>4.3<br>4.1|3.12<br>3.02<br>2.60|3.12<br>3.56<br>3.78<br>3.02<br>3.36<br>3.58<br>2.60<br>2.94<br>3.10|1.5<br>1.4<br>1.3|2.2<br>1.9<br>1.8|4. SRF measured using an Agilent/HP 8753D network<br>analyzer and a Coilcraft SMD -D test fixture.<br>5. DC current at 25°C that causes the specified|||||
|MSS1278T-184KL_180 ±10%|180 ±10%|229.0 254.5|229.0 254.5|4.0|2.36|2.36<br>2.68<br>2.84|1.2|1.7|inductance drop from its value without current.|||||
|MSS1278T-224KL_  220 ±10%<br>MSS1278T-274KL_  270 ±10%<br>MSS1278T-334KL_  330 ±10%<br>MSS1278T-394KL_  390 ±10%<br>MSS1278T-474KL_470 ±10%<br>MSS1278T-564KL_  560 ±10%<br>MSS1278T-684KL_  680 ±10% 1045<br>MSS1278T-824KL_  820 ±10% 1166<br>MSS1278T-105KL_ 1000 ±10% 1334|MSS1278T-224KL_  220 ±10%<br>MSS1278T-274KL_  270 ±10%<br>MSS1278T-334KL_  330 ±10%<br>MSS1278T-394KL_  390 ±10%<br>470 ±10%<br>MSS1278T-564KL_  560 ±10%<br>MSS1278T-684KL_  680 ±10% 1045<br>MSS1278T-824KL_  820 ±10% 1166<br>MSS1278T-105KL_ 1000 ±10% 1334|323.6 359.6<br>415.6 461.8<br>487.3 541.5<br>533.6 592.9<br>707.5 786.2<br>777.4 863.8<br>MSS1278T-684KL_  680 ±10% 1045<br>MSS1278T-824KL_  820 ±10% 1166<br>MSS1278T-105KL_ 1000 ±10% 1334|323.6 359.6<br>415.6 461.8<br>487.3 541.5<br>533.6 592.9<br>707.5 786.2<br>777.4 863.8<br>1162<br>1296<br>1482|3.4<br>3.1<br>2.9<br>2.7<br>2.2<br>2.0<br>1.7<br>1.4<br>1.3|2.24<br>2.50<br>2.62<br>1.94<br>2.18<br>2.34<br>1.72<br>1.92<br>2.06<br>1.62<br>1.82<br>1.92<br>1.44<br>1.64<br>1.74<br>1.40<br>1.54<br>1.66<br>1.24<br>1.32<br>1.46<br>1.14<br>1.28<br>1.42<br>0.982 1.08<br>1.18||1.0<br>0.90 1.2<br>0.80 1.0<br>0.75 1.0<br>0.66 0.90<br>0.60 0.80<br>0.55 0.75<br>0.50 0.70<br>0.48 0.68|1.6<br>0.90 1.2<br>0.80 1.0<br>0.75 1.0<br>0.66 0.90<br>0.60 0.80<br>0.55 0.75<br>0.50 0.70<br>0.48 0.68|Click for temperature derating information.<br>6. Current that causes the specified temperature<br>rise from 25°C ambient. This information is for<br>reference only and does not represent absolute<br>maximum ratings.<br>Click for temperature derating information.<br>7. Electrical specifications at 25°C.<br>Refer to Doc 362 “Soldering Surface Mount<br>Components” before soldering.|||||



**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 598-1 Revised 01/28/22 

© Coilcraft Inc. 2022 

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 598-2 

AEC Q200 +125°C 

## 

## **SMT Power Inductors – MSS1278T Series** 

## **Typical L vs Frequency** 

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


## **Typical L vs Current** 

**==> picture [244 x 185] intentionally omitted <==**

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


**==> picture [241 x 255] intentionally omitted <==**

Dimensions are in[inches ] mm 

**==> picture [118 x 45] intentionally omitted <==**

Document 598-2 Revised 01/28/22 

**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 

© Coilcraft Inc. 2022 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

Updated at June 6, 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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