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MSS1038-104MLC
Coilcraft
FIXED IND 100UH 1.45A 304MOHM SM
2197 Pcs New Original In Stock
100 µH Shielded Drum Core Inductor 1.45 A 304mOhm Max Nonstandard
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5.0 / 5.0
- (117 Ratings)
MSS1038-104MLC
Product Overview
2172263
DiGi Electronics Part Number
MSS1038-104MLC-DGManufacturer
Coilcraft
MSS1038-104MLC
Description
FIXED IND 100UH 1.45A 304MOHM SMInventory
2197 Pcs New Original In Stock
100 µH Shielded Drum Core Inductor 1.45 A 304mOhm Max Nonstandard
Quantity
Minimum 1
Minimum 1
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MSS1038-104MLC Technical Specifications
Category
Fixed Inductors
Packaging
Tape & Reel (TR)
Series
MSS1038
Product Status
Active
Type
Drum Core
Material - Core
Ferrite
Inductance
100 µH
Tolerance
±20%
Current Rating (Amps)
1.45 A
Current - Saturation (Isat)
1.02A
Shielding
Shielded
DC Resistance (DCR)
304mOhm Max
Q @ Freq
-
Frequency - Self Resonant
6MHz
Ratings
AEC-Q200
Operating Temperature
-40°C ~ 85°C
Inductance Frequency - Test
100 kHz
Features
-
Mounting Type
Surface Mount
Package / Case
Nonstandard
Supplier Device Package
-
Size / Dimension
0.402" L x 0.394" W (10.20mm x 10.00mm)
Height - Seated (Max)
0.157" (4.00mm)
Datasheet & Documents
HTML Datasheet
MSS1038-104MLC-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
ECCN
EAR99
HTSUS
8504.50.8000
Additional Information
Other Names
2457-MSS1038-104MLC
Standard Package
1
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
포장에 있어 세심한 신경을 써서 제품이 안전하게 도착했어요. 배송 추적도 매우 세밀하게 제공됐습니다.
de desembre 02, 2025
Schnelle Lieferung, kompetenter Support – einfach zufrieden.
de desembre 02, 2025
The affordability of DiGi Electronics products makes them stand out in a crowded market.
de desembre 02, 2025
The level of stock they maintain is impressive and always meets my demand needs.
de desembre 02, 2025
Timely shipments and well-designed packaging are hallmarks of their service.
de desembre 02, 2025
Customer support staff are always eager to ensure my satisfaction.
de desembre 02, 2025
DiGi Electronics values customer feedback and promptly acts on it.
de desembre 02, 2025
Their careful packaging process safeguards products effectively, reducing return rates.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing a MSS1038-104MLC inductor with a similar 100 µH shielded SMD inductor in a high-current buck converter, and how can I avoid saturation-related failures?
The MSS1038-104MLC has a saturation current (Isat) of 1.02 A, which is significantly lower than its 1.45 A RMS current rating—this gap is critical in high-di/dt applications like buck converters. When substituting with parts such as the Würth WE-LQS 7440401101 (100 µH, 1.3 A Isat), ensure the replacement’s Isat exceeds your peak inductor current under worst-case load transients. A common risk is assuming RMS current compatibility implies safe operation, but core saturation can cause sudden inductance collapse, leading to MOSFET overstress or thermal runaway. Always validate with transient load testing and consider derating Isat by 20–30% for margin, especially near the MSS1038-104MLC’s 85°C upper limit.
Can the MSS1038-104MLC be used in an automotive-grade DC-DC module operating at 125°C ambient, given its AEC-Q200 rating and 85°C max operating temperature?
No—despite being AEC-Q200 qualified, the MSS1038-104MLC has a maximum operating temperature of 85°C, making it unsuitable for sustained operation at 125°C ambient. AEC-Q200 ensures reliability under automotive environmental stresses (vibration, humidity, thermal cycling), but does not override the component’s thermal limits. In high-temperature zones like under-hood applications, consider inductors rated for 125°C+ such as the Vishay IHLP-4040DZ-81 (100 µH, 1.5 A, 125°C rated). If you must use the MSS1038-104MLC, implement aggressive thermal management (e.g., airflow, heatsinking) and verify via thermal imaging that the inductor body stays below 85°C under full load.
How does the nonstandard package of the MSS1038-104MLC impact PCB layout and high-frequency noise performance compared to industry-standard shielded inductors like the Bourns SRN6045TA-100M?
The MSS1038-104MLC’s nonstandard 10.2 mm × 10.0 mm footprint lacks pin compatibility with common shielded inductors, requiring custom land patterns and potentially disrupting ground plane continuity if not carefully routed. Unlike the Bourns SRN6045TA-100M (standard 6.0 × 6.0 mm), the MSS1038-104MLC’s larger drum core and shielding design offer superior magnetic containment, reducing EMI in sensitive analog circuits. However, its taller profile (4.0 mm vs. 2.8 mm) may interfere with enclosure clearances. To mitigate layout risks, maintain a solid ground pour beneath the inductor, avoid routing high-speed signals under it, and use 4-layer boards with dedicated power/ground planes to preserve noise performance.
Is the MSS1038-104MLC a viable drop-in replacement for the TDK VLS5040X-101M in a 5 V to 3.3 V, 1 A switching regulator, considering both have 100 µH inductance and similar current ratings?
Not without validation—the TDK VLS5040X-101M has a higher saturation current (1.5 A) and lower DCR (220 mΩ typ) compared to the MSS1038-104MLC (1.02 A Isat, 304 mΩ max). In a 1 A output regulator, peak inductor current can exceed 1.3 A during transients, risking premature saturation with the MSS1038-104MLC. Additionally, the higher DCR increases conduction losses, potentially raising junction temperatures beyond safe limits in compact designs. While both are AEC-Q200 and shielded, the MSS1038-104MLC should only be used if your actual peak current remains below ~0.9 A. Always simulate or bench-test efficiency and thermal performance before committing to the swap.
What reliability concerns should I consider when using the MSS1038-104MLC in a industrial power supply subjected to frequent thermal cycling between -40°C and 70°C?
The MSS1038-104MLC is rated for -40°C to 85°C operation and is AEC-Q200 qualified, which includes thermal shock testing, but repeated cycling can still induce mechanical stress at the solder joints due to CTE mismatch between the ferrite core and PCB. Over time, this may lead to cracked solder joints or degraded DCR. To mitigate, use SAC305 solder with proper reflow profiling, ensure adequate pad design with thermal relief, and consider underfill if vibration is also present. Monitor DCR drift during HALT (Highly Accelerated Life Testing)—a rise >10% indicates impending failure. For mission-critical systems, derate current by 15% and avoid mounting near high-heat components to minimize thermal gradients.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
MSS1038-104MLC CAD Models
Coilcraft MSS1038-104MLC PCB symbols & footprints
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