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Dimensions: 4.0×4.0×1.2mm
Inductance Range: 0.033~1.2μH (±20%)
• Lowest DCR, exceptionally low AC losses
• Excellent current-handling capability, soft saturation characteristics
Core Material: Composite magnetic powder core
Environmental Rating: RoHS compliant, Halogen-free
Terminal Plating: Ni-Sn (customizable SAC/SP)
Anti-rust Treatment: Terminal anti-rust plating
Operating Temperature: -40℃ ~ +125℃
Max. Component Temperature: +165℃ (ambient + temp rise)
Storage Temperature: -55℃~+165℃ (bulk); -55~+80℃ (reel)
Reflow Soldering: Max. 3 cycles, 260℃/40s
MSL Rating: Level 1, unlimited floor life
Rated Voltage: 80V

Specifications

No.Part NumberInductance ±20% (μH)DCR typ (mΩ)DCR max (mΩ)SRF typ (MHz)Isat (A)10%-30%Irms 20℃ rise (A)Irms 40℃ rise (A)
1SYP4012-330MSN0.0331.21.580013.2 / 22.0 / 31.523.232.0 
2SYP4012-101MSN0.12.42.92708.9 / 14.6 / 21.513.819.7
3SYP4012-221MSN0.22561606.1 / 9.9 / 14.410.914.7
4SYP4012-251MSN0.256.88.21505.8 / 9.3 / 13.310.113.9
5SYP4012-381MSN0.389.110.91104.5 / 7.3 / 10.78.812
6SYP4012-451MSN0.4511.513.81054.4 / 7.0 / 9.9810.9
7SYP4012-601MSN0.614.617.5883.6 / 5.9 / 8.46.69
8SYP4012-102MSN12529.9672.9 / 4.6 / 6.65.27
9SYP4012-122MSN1.229.535.3582.6 / 4.2 / 6.04.86.6
  1. Inductance: 1MHz, 0.1Vrms, 0Adc test condition, Ta=25℃.

  2. DCR: DC micro-ohmmeter measurement.

  3. SRF: High-precision network analyzer test.

  4. Isat: DC current at which inductance drops by specified percentage at 25℃; derating required for high-temperature applications.

  5. Irms: DC current causing specified temperature rise (20℃/40℃); for reference only, actual verification required in end-system testing.

  6. Terminal Code: SN=Sn-Ni, SAC=Sn-Ag-Cu; SP=Sn-Pb (non-RoHS).

  7. Packaging: Tape & reel, complies with EIA-481 standards; supports 7-inch / 13-inch reels.

  8. Electrical Test Conditions: Ta=25℃, specifications subject to change without notice.


Features

· Lowest DC resistance with significantly reduced AC losses, outstanding performance at high frequencies

· Higher inductance in the same PCB footprint; smaller footprint for the same inductance, ideal for high-density layouts

· Substantially enhanced Irms (temp rise current) and Isat (saturation current), resulting in lower heat generation and higher efficiency



Applications

· Servers, PC motherboard VRM/VRD, CPU core power delivery (Core Application)

· High-density high-current power modules, high-performance FPGA/SoC power stages

· Industrial high-power systems requiring high efficiency and low temperature rise

· Automotive electronics and telecom equipment with strict dimensional constraints

SYP2DDimension Drawing4012_01.png

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