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MSS1278H-334KED
Power Inductor (SMD), AEC-Q200, 330 µH, 1.3 A, Shielded, 1.6 A, MSS1278H 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: COILCRAFT
- Product type: SMD Power Inductors
- SVHC: No SVHC (25-Jun-2025)
- Inductance: 330µH
- Product Range: MSS1278H Series
- Product Width: 12mm
- Product Height: 7.8mm
- Product Length: 12mm
- DC Resistance Max: 0.35ohm
- RMS Current (Irms): 1.3A
- Inductance Tolerance: ± 10%
- Inductor Construction: Shielded
- Inductor Case / Package: -
- Saturation Current (Isat): 1.6A
| Delivery and price | |
|---|---|
| Units per pack | 500 |
| Price | 1.06 € |
| Current stock | 25+ |
| Lead time | 30 days |
Datasheet
Web Sample Tools & Support page & buy software & FAQ Document 1511-1 Halogen Free AEC Q200 +125°C ## **MSS1278H High Temp Power Inductors** - Designed for high ambient temperatures - Magnetic shielding, very low DCR, excellent current handling - AEC-Q200 Grade 1 qualified (–40°C to +125°C ambient) ## **Core material** Ferrite **Core and winding loss** See www.coilcraft.com/coreloss **Environmental** RoHS Compliant, halogen free **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) **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 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 max**<br>MSS1278H-821M_D 0.82 ±20%<br>3.7<br>4.5 107<br>MSS1278H-142M_D 1.4 ±20%<br>4.6<br>5.6<br>MSS1278H-202M_D 2.0 ±20%<br>5.1<br>6.2<br>MSS1278H-272M_D 2.7 ±20%<br>5.7<br>7.0|**DCR**3 <br> **Inductance**2 **(mOhms) **<br> **Part number**1<br>**(µH)**<br>**typ max**<br>MSS1278H-821M_D 0.82 ±20%<br>3.7<br>4.5 107<br>MSS1278H-142M_D 1.4 ±20%<br>4.6<br>5.6<br>MSS1278H-202M_D 2.0 ±20%<br>5.1<br>6.2<br>MSS1278H-272M_D 2.7 ±20%<br>5.7<br>7.0|**DCR**3 <br> **Inductance**2 **(mOhms) **<br> **Part number**1<br>**(µH)**<br>**typ max**<br>MSS1278H-821M_D 0.82 ±20%<br>3.7<br>4.5 107<br>MSS1278H-142M_D 1.4 ±20%<br>4.6<br>5.6<br>MSS1278H-202M_D 2.0 ±20%<br>5.1<br>6.2<br>MSS1278H-272M_D 2.7 ±20%<br>5.7<br>7.0|**DCR**3 <br> **Inductance**2 **(mOhms) **<br> **Part number**1<br>**(µH)**<br>**typ max**<br>MSS1278H-821M_D 0.82 ±20%<br>3.7<br>4.5 107<br>MSS1278H-142M_D 1.4 ±20%<br>4.6<br>5.6<br>MSS1278H-202M_D 2.0 ±20%<br>5.1<br>6.2<br>MSS1278H-272M_D 2.7 ±20%<br>5.7<br>7.0|**SRF**<br> **typ**4<br>**(MHz) dro**<br>4.5 107<br>77<br>60<br>49|**Isat(A)**5<br>**Irms**<br>**10% 20%**<br>**30%**<br>**20°C 40°C**<br>**drop drop drop**<br>**rise**<br>26.5<br>29.0<br>31.0<br>7.50 10.50<br>21.0<br>23.0<br>24.5<br>7.50 10.50<br>17.6<br>21.2<br>24.0<br>7.00 10.00<br>14.9<br>16.7<br>18.0<br>6.20<br>~~eee~~|**Isat(A)**5<br>**Irms**<br>**10% 20%**<br>**30%**<br>**20°C 40°C**<br>**drop drop drop**<br>**rise**<br>26.5<br>29.0<br>31.0<br>7.50 10.50<br>21.0<br>23.0<br>24.5<br>7.50 10.50<br>17.6<br>21.2<br>24.0<br>7.00 10.00<br>14.9<br>16.7<br>18.0<br>6.20<br>~~eee~~|**Isat(A)**5<br>**Irms**<br>**10% 20%**<br>**30%**<br>**20°C 40°C**<br>**drop drop drop**<br>**rise**<br>26.5<br>29.0<br>31.0<br>7.50 10.50<br>21.0<br>23.0<br>24.5<br>7.50 10.50<br>17.6<br>21.2<br>24.0<br>7.00 10.00<br>14.9<br>16.7<br>18.0<br>6.20<br>~~eee~~|**Isat(A)**5<br>**Irms**<br>**10% 20%**<br>**30%**<br>**20°C 40°C**<br>**drop drop drop**<br>**rise**<br>26.5<br>29.0<br>31.0<br>7.50 10.50<br>21.0<br>23.0<br>24.5<br>7.50 10.50<br>17.6<br>21.2<br>24.0<br>7.00 10.00<br>14.9<br>16.7<br>18.0<br>6.20<br>~~eee~~|**rms(A)**6<br>**20°C 40°C**<br>**rise**<br>7.50 10.50<br>7.50 10.50<br>7.00 10.00<br>8.80|1. Please specify**termination**codes:<br>**MSS1278H-105KED**<br>**Termination: E**=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**<br>||1. Please specify**termination**codes:<br>**MSS1278H-105KED**<br>**Termination: E**=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**<br>|| |---|---|---|---|---|---|---|---|---|---|---|---| |MSS1278H-392M_D 3.9 ±20%||7.0|7.0<br>8.6|41|12.9|14.4|15.5|6.20|8.60|tin-lead (63/37).|| |MSS1278H-472M_D 4.7 ±20%|MSS1278H-472M_D 4.7 ±20%|7.8|7.8<br>9.4|33|11.4|12.7|13.7|5.30|7.40|**Packaging: D**= 13″ machine-ready reel.|| |MSS1278H-602M_D 6.0 ±20%|MSS1278H-602M_D 6.0 ±20%|10.0|10.0<br>12.0|27|10.0|11.3|12.2|5.00|7.20|embossed plastic tape (500 parts|| |MSS1278H-722M_D 7.2 ±20%<br>MSS1278H-872M_D 8.7 ±20%<br>MSS1278H-103M_D 10 ±20%<br>MSS1278H-123M_D 12 ±20%||10.6<br>13.5<br>15.0<br>16.0|10.6<br>12.8<br>13.5<br>16.3<br>15.0<br>18.0<br>16.0<br>19.2|24<br>22<br>20<br>18|9.2<br>8.3<br>7.6<br>7.0|10.3<br>9.3<br>8.4<br>7.9|11.1<br>10.0<br>9.2<br>8.5|4.40<br>4.30<br>4.20<br>3.80|6.00<br>5.80<br>5.60<br>5.40|per full reel). Quantities less than<br>full reel available: in tape (not<br>machine ready) or with leader<br>and trailer ($25 charge).|| |MSS1278H-153M_D 15 ±20%<br>MSS1278H-183M_D 18 ±20%<br>MSS1278H-223M_D 22 ±20%<br>MSS1278H-273M_D 27 ±20%||17.0<br>22.0<br>25.0<br>34.0|17.0<br>20.4<br>22.0<br>26.5<br>25.0<br>30.0<br>34.0<br>41.0|17<br>14<br>12<br>10|6.5<br>5.7<br>5.1<br>4.6|7.3<br>6.5<br>5.8<br>5.2|7.9<br>7.0<br>6.2<br>5.6|3.60<br>3.40<br>3.00<br>2.80|5.10<br>4.80<br>4.30<br>3.90|2. Inductance tested at 100 kHz, 0.1 Vrms, 0 Adc using<br>an Agilent/HP 4263B LCR meter or equivalent.<br>3. DCR measured on a micro-ohmmeter and a<br>Coilcraft CCF858 test fixture.|| |MSS1278H-333M_D 33 ±20%<br>MSS1278H-393M_D 39 ±20%<br>MSS1278H-473K_D 47 ±10%<br>MSS1278H-563K_D 56 ±10%<br>MSS1278H-683K_D 68 ±10%|MSS1278H-333M_D 33 ±20%<br>MSS1278H-393M_D 39 ±20%<br>MSS1278H-473K_D 47 ±10%<br>MSS1278H-563K_D 56 ±10%<br>D 68 ±10%|38.0<br>44.0<br>48.0<br>61.0<br>68.0|38.0<br>45.0<br>44.0<br>53.0<br>48.0<br>57.0<br>61.0<br>73.0<br>68.0<br>83.0|9.5<br>8.5<br>7.5<br>7.0<br>6.5|4.2<br>3.8<br>3.6<br>3.3<br>3.0|4.7<br>4.3<br>4.0<br>3.7<br>3.3|5.1<br>4.7<br>4.4<br>4.0<br>3.6|2.70<br>2.60<br>2.30<br>2.20<br>2.00|3.80<br>3.70<br>3.20<br>3.10<br>2.70|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<br>inductance drop from its value without current.<br>Click for temperature derating information|| |MSS1278H-823K_D 82 ±10%|MSS1278H-823K_D 82 ±10%|89.0 108|89.0 108|5.5|2.7|3.1|3.3|1.80|2.40|6. Current that causes the specified temperature|6. Current that causes the specified temperature| |MSS1278H-104K_D 100 ±10%|MSS1278H-104K_D 100 ±10%|101|121|5.0|2.4|2.8|3.0|1.70|2.30|rise from 25°C ambient. This information is for|| |MSS1278H-124K_D 120 ±10%|MSS1278H-124K_D 120 ±10%|113|132|4.5|2.2|2.5|2.7|1.60|2.20|reference only and does not represent absolute|| |MSS1278H-154K_D 150 ±10%|MSS1278H-154K_D 150 ±10%|155|181|3.9|2.0|2.2|2.4|1.30|1.80|maximum ratings.|| |MSS1278H-184K_D 180 ±10%|D 180 ±10%|174|208|3.6|1.8|2.0|2.2|1.20|1.70|Click for temperature derating information|| |MSS1278H-224K_D 220 ±10%|MSS1278H-224K_D 220 ±10%|225|270|3.5|1.6|1.9|2.0|1.05|1.45|7. Electrical specifications at 25°C.|| |MSS1278H-274K_D 270 ±10%|MSS1278H-274K_D 270 ±10%|257|305|3.3|1.5|1.7|1.8|1.00|1.40|Refer to Doc 362 “Soldering Surface Mount|| |MSS1278H-334K_D 330 ±10%|MSS1278H-334K_D 330 ±10%|291|350|2.9|1.3|1.5|1.6|0.92|1.30|Components” before soldering.|| |MSS1278H-394K_D 390 ±10%|MSS1278H-394K_D 390 ±10%|379|450|2.4|1.2|1.4|1.5|0.85|1.15||| |MSS1278H-474K_D 470 ±10%|D 470 ±10%|430|500|2.3|1.1|1.3|1.4|0.80|1.10||| |MSS1278H-564K_D 560 ±10%|MSS1278H-564K_D 560 ±10%|562|660|1.9|1.0|1.2|1.3|0.66|0.90||| |MSS1278H-684K_D 680 ±10%|MSS1278H-684K_D 680 ±10%|633|760|1.7|0.92|0.92<br>1.0|1.1|0.63|0.85||| |MSS1278H-824K_D 820 ±10%|MSS1278H-824K_D 820 ±10%|721|840|1.7|0.84|0.84<br>0.97|1.0|0.60|0.80||| |MSS1278H-105K_D 1000 ±10%|MSS1278H-105K_D 1000 ±10%|970|1150|1.4|0.76|0.76<br>0.87|0.94 0.54|0.94 0.54|0.74||| - **Termination: E** = 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: D** = 13″ machine-ready reel. EIA-481 embossed plastic tape (500 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge). 2. Inductance tested at 100 kHz, 0.1 Vrms, 0 Adc using 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 25°C that causes the specified inductance drop from its value without current. Click for temperature derating information. 6. Current that causes the specified temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Click for temperature derating information. 7. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount 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 1511-1 Revised 05/04/20 © Coilcraft Inc. 2020 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 1511-2 ## **SMT Power Inductors – MSS1278H Series** ## **Typical L vs Frequency** **==> picture [285 x 185] intentionally omitted <==** **----- Start of picture text -----**<br> 10000<br>Halogen<br>Free 1000 1000 µH<br>100 µH<br>100<br>AEC<br>Q200 +125°C<br>10 µH<br>10<br>1.4 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>1.4 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 [81 x 14] intentionally omitted <==** **----- Start of picture text -----**<br> Dimensions are in [inches ]<br>mm<br>**----- End of picture text -----**<br> **Packaging** 500/13″ reel; Plastic tape: 24 mm wide, 0.5 mm thick, 16 mm pocket spacing, 8.7 mm pocket depth **==> picture [118 x 45] intentionally omitted <==** Document 1511-2 Revised 05/04/20 **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. 2020 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 April 29, 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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