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SLF7045T-102MR14
TDK Corporation
FIXED IND 1MH 250MA 2.736OHM SMD
3372 Pcs New Original In Stock
1 mH Shielded Drum Core, Wirewound Inductor 250 mA 2.736Ohm Max Nonstandard
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5.0 / 5.0
- (422 Ratings)
SLF7045T-102MR14
Product Overview
6686758
DiGi Electronics Part Number
SLF7045T-102MR14-DGManufacturer
TDK Corporation
SLF7045T-102MR14
Description
FIXED IND 1MH 250MA 2.736OHM SMDInventory
3372 Pcs New Original In Stock
1 mH Shielded Drum Core, Wirewound Inductor 250 mA 2.736Ohm Max Nonstandard
Quantity
Minimum 1
Minimum 1
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SLF7045T-102MR14 Technical Specifications
Category
Fixed Inductors
Packaging
-
Series
SLF
Product Status
Obsolete
Type
Drum Core, Wirewound
Material - Core
Ferrite
Inductance
1 mH
Tolerance
±20%
Current Rating (Amps)
250 mA
Current - Saturation (Isat)
140mA
Shielding
Shielded
DC Resistance (DCR)
2.736Ohm Max
Q @ Freq
-
Frequency - Self Resonant
-
Ratings
-
Operating Temperature
-40°C ~ 105°C
Inductance Frequency - Test
1 kHz
Mounting Type
Surface Mount
Package / Case
Nonstandard
Supplier Device Package
-
Size / Dimension
0.276" L x 0.276" W (7.00mm x 7.00mm)
Height - Seated (Max)
0.189" (4.80mm)
Datasheet & Documents
HTML Datasheet
SLF7045T-102MR14-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8504.50.8000
Additional Information
Other Names
445-1214-6
445-1214-2
SLF7045T102MR14
445-1214-1
Standard Package
1,000
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
トラブルが発生した際も、対応のスピードと誠実さに驚きました。信頼できるパートナーです。
Dec 02, 2025
Their timely shipping ensures I always meet my project requirements.
Dec 02, 2025
The secure packaging from DiGi Electronics gives me peace of mind during transit.
Dec 02, 2025
They use reinforced packaging for higher-value shipments, which I find very reassuring.
Dec 02, 2025
Their team responded rapidly to my questions, great service.
Dec 02, 2025
I appreciate their friendly approach and high standards.
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Frequently Asked Questions (FAQ)
Can I replace the obsolete SLF7045T-102MR14 with a modern equivalent like SRR7045-102M in a high-reliability power filter design without risking saturation or EMI degradation?
Yes, the SRR7045-102M from Bourns is a viable drop-in replacement for the SLF7045T-102MR14 in most power filtering applications due to its similar 1 mH inductance, 7.0 mm x 7.0 mm footprint, and shielded drum-core construction. However, note that the SRR7045-102M has a higher saturation current (210 mA vs. 140 mA), which improves robustness under transient loads, but its DCR is slightly lower at 2.2 Ω max—verify your circuit’s DC bias margin. Crucially, ensure your PCB layout maintains the same creepage and shielding grounding practices, as reduced EMI performance could occur if the new inductor’s internal shielding differs. Always validate conducted emissions in your final system before full migration.
What are the key reliability risks when using the SLF7045T-102MR14 in an automotive-grade application operating near its -40°C to 105°C temperature limit?
The SLF7045T-102MR14, while rated for -40°C to 105°C, poses reliability risks in automotive environments due to its non-RoHS status and ferrite core material sensitivity to thermal cycling. At sustained high temperatures (>100°C), ferrite permeability can drift, causing inductance drop and potential saturation below the rated 140 mA Isat. Additionally, the wirewound construction may suffer from mechanical stress over repeated thermal cycles, leading to intermittent opens or increased DCR. For long-term reliability, derate the current by at least 20% and consider conformal coating to mitigate moisture ingress—even though MSL is 1. If possible, migrate to a RoHS-compliant, AEC-Q200 qualified alternative like the P1167.105NLT for new designs.
How does the SLF7045T-102MR14 compare to the P1167.105NLT in terms of high-frequency noise suppression above 100 kHz, and can it be used interchangeably in a switch-mode power supply?
While both the SLF7045T-102MR14 and P1167.105NLT offer 1 mH inductance, the P1167.105NLT (from Coilcraft) uses a gapped ferrite core optimized for stable inductance under DC bias and exhibits better high-frequency performance due to lower parasitic capacitance. The SLF7045T-102MR14, being wirewound with unspecified self-resonant frequency, may resonate unpredictably above 50 kHz, reducing its effectiveness in modern SMPS operating at 100–500 kHz. Interchangeability is not recommended without re-evaluating the output filter’s stability and conducted EMI profile. If replacing, add a damping resistor or ferrite bead in parallel to suppress potential resonances introduced by the SLF7045T-102MR14’s construction.
Is the SLF7045T-102MR14 suitable for use in a compact wearable device where board space is limited and peak currents briefly exceed 200 mA during RF transmission bursts?
No, the SLF7045T-102MR14 is not ideal for wearable designs with transient peaks above 200 mA. Although its 250 mA RMS current rating seems sufficient, the saturation current is only 140 mA—meaning inductance collapses sharply during RF bursts, leading to voltage droop and potential regulator instability. Additionally, at 4.8 mm height, it may exceed z-height constraints in ultra-thin wearables. Consider a lower-profile, higher-Isat alternative like the SRR0604-102KL (also 1 mH but with 300 mA Isat and 1.8 mm height), even if it requires minor layout adjustments. Always simulate or test transient response with actual load profiles to avoid field failures.
What design precautions should I take when last-time-buying the SLF7045T-102MR14 for legacy industrial equipment, given its obsolete status and non-RoHS compliance?
When procuring the SLF7045T-102MR14 as a last-time buy, secure a certified traceable batch with full material disclosure to avoid counterfeit or degraded stock. Due to its non-RoHS status, ensure your assembly process can handle leaded solder profiles without damaging adjacent RoHS components. Stock enough units to cover future repairs—consider a 3–5 year buffer based on MTBF projections. Document a formal obsolescence mitigation plan that includes qualification of at least one substitute (e.g., SLF7045T-102MR14-PF, the RoHS-compliant version) with tested drop-in compatibility. Finally, validate long-term storage conditions (dry, <40°C) to prevent oxidation of terminations, which could increase contact resistance over time.
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.
SLF7045T-102MR14 CAD Models
TDK Corporation SLF7045T-102MR14 PCB symbols & footprints
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