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1812LS (4532) Series

Wirewound Ferrite Beads

RoHS compliant
Our 1812LS Series wirewound ferrite beads have a ferrite core construction that achieves high current handing and low DCR. Impedance ranges from 770 Ohms to 191 kOhms at 10 MHz, and the tight inductance tolerance of ±5% is standard, stocked, and ready for shipment.
  • Higher performance than other surface mount ferrite beads in the market
  • High impedance across a wide bandwidth
  • Ferrite construction and heavy gauge wire for high current handling
  • Extremely low DCR for high current applications
  • Eliminates high frequency noise in power supplies or RF signal isolation applications
  • Defense Supply Center CID A-A-59699
Need parts for space, military or other critical applications? 
 - See Coilcraft CPS 450RAB series.
Buy Now:
Count Unit price
1 $0.68
200 $0.50
600 $0.37
1200 $0.29
3000 $0.24
6000 $0.21
12000 $0.19

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:
Designer's Kit:
Kit Values Price
C314 24 (10 of each) $60.00

Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (µH) 2
(Tolerance: ±5%)
Impedance typ (Ω) SRF typ (MHz) 3 DCR max (Ω) 4 Irms (mA) 5
1 MHz 10 MHz
1812LS-123XJL_ 12.0 @ 2.5 MHz 77.9 771 85.0 2.0 310
1812LS-153XJL_ 15.0 @ 2.5 MHz 97.8 970 70.0 2.5 290
1812LS-183XJL_ 18.0 @ 2.5 MHz 118 1201 52.0 2.8 270
1812LS-223XJL_ 22.0 @ 2.5 MHz 140 1405 58.0 3.2 260
1812LS-273XJL_ 27.0 @ 2.5 MHz 177 1826 46.0 3.6 240
1812LS-333XJL_ 33.0 @ 2.5 MHz 212 2185 40.0 4.0 230
1812LS-393XJL_ 39.0 @ 2.5 MHz 255 2729 30.0 4.5 210
1812LS-473XJL_ 47.0 @ 2.5 MHz 301 3705 24.0 5.0 200
1812LS-563XJL_ 56.0 @ 2.5 MHz 361 4917 20.0 5.5 190
1812LS-683XJL_ 68.0 @ 2.5 MHz 423 7392 16.0 6.0 180
1812LS-823XJL_ 82.0 @ 2.5 MHz 512 11227 13.5 7.0 170
1812LS-104XJL_ 100.0 @ 2.5 MHz 619 19090 12.0 8.0 150
1812LS-124XJL_ 120.0 @ 0.79 MHz 757 13752 14.5 11.5 135
1812LS-154XJL_ 150.0 @ 0.79 MHz 979 37311 11.5 13.0 125
1812LS-184XJL_ 180.0 @ 0.79 MHz 1175 191219 9.3 14.2 120
1812LS-224XJL_ 220.0 @ 0.79 MHz 1427 22919 7.6 16.2 115
1812LS-274XJL_ 270.0 @ 0.79 MHz 1742 29599 8.3 20.5 105
1812LS-334XJL_ 330.0 @ 0.79 MHz 2169 18825 7.0 22.5 100
1812LS-394XJL_ 390.0 @ 0.79 MHz 2558 8911 5.2 24.5 90
1812LS-474XJL_ 470.0 @ 0.79 MHz 3125 8087 4.4 26.5 85
1812LS-564XJL_ 560.0 @ 0.79 MHz 3858 2196 2.8 28.5 75
1812LS-684XJL_ 680.0 @ 0.79 MHz 4599 3257 2.3 38.0 60
1812LS-824XJL_ 820.0 @ 0.79 MHz 6156 1747 2.1 41.0 55
1812LS-105XJL_ 1000.0 @ 0.79 MHz 7167 2265 1.9 44.0 50
Notes
  1. When ordering, please specify termination and packaging codes: e.g. 1812LS-105XJLC
  2. Inductance at 2.5 MHz measured using a Coilcraft SMD-A fixture in an Agilent/HP 4286A impedance analyzer with Coilcraft-provided correlation pieces. Inductance at 0.79 MHz measured using a Coilcraft SMD-B fixture in an Agilent/HP 4192A impedance analyzer with Coilcraft-provided correlation pieces.
  3. SRF measured using an Agilent/HP 8753D network analyzer and a Coilcraft SMD-D test fixture.
  4. DCR measured on a Cambridge Technology Micro-ohmmeter. For other operating temperatures, use this DCR at Temperature calculator.
  5. Irms: Current that causes a 15°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Because of their open construction, these parts will not saturate.

Termination:

  • L = RoHS compliant silver-palladium-platinum-glass frit.
  • R = RoHS compliant, matte tin over nickel over silver platinum-glass frit.
  • T = RoHS tin-silver-copper (95.5/4/0.5)(Special order, added cost)
  • S = non-RoHS tin-lead (63/37)(Special order, added cost)

Packaging:

  • C = 7" machine-ready reel
    EIA-481 embossed plastic tape (600 per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel
    In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.
  • 13" reel, machine-ready 
    EIA-481 embossed plastic tape. Factory order only, not stocked (2200 parts per full reel).
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C with Irms current
Storage temperature range:
Component: –40°C to +100°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+100°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
One per billion hours / one billion hours, calculated per Telcordia SR-332

Performance curves

Inductance vs Current

Impedance vs Frequency

Physical characteristics

1812lsd.gif
 
A max B max C max D ref E F G H I J
0.195 0.150 0.135 0.070 0.100 0.025 0.128 0.120 0.045 0.118 inches
4,95 3,81 3,43 1,78 2,54 0,64 3,25 3,05 1,14 3,00 mm
Height dimension (C) is before optional solder application.
For maximum height dimension including solder, add 0.006 in / 0,152 mm

Tape and Reel specification

tapereel_pl.gif


 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
7" (178 mm) 13" (330 mm) A B C D E W P Po P1 H T part_or_a.gif
600 2200* 178/330 60/100 13 18,4 12,4 12 8 4 2 3,7 0,3
* Special order

General specification

Core Material:
Ferrite
Weight:
142 – 171 mg

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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