Coilcraft 4310LC Wideband Bias Choke
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4310LC Wideband Bias Chokes

  • Surface mount broadband RF choke
  • Flat bandwidth with high impedance to 6 GHz
  • Low DCR and excellent current handling; Ideal for high current bias Tee applications
  • RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over copper terminations.
  • COTS Plus tin-silver-copper and tin-lead terminations available


Part number1
Click to get parts
±10% (µH)
SRF typ3
DCR max4
Irms (A)5
20°C rise 40°C rise
4310LC-132KE_ 1.30 235 15.1 2.7 4.2
4310LC-352KE_ 3.50 188 49.0 2.3 3.1
1 When ordering, please specify termination and packaging codes: e.g. 4310LC-132KEC
  Termination: E = RoHS compliant tin-silver over copper
Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) or
= non-RoHS tin-lead (63/37).


C = 7" machine-ready reel
EIA-481 embossed plastic tape (350 parts per full reel).
B = Less than full reel
In tape but not machine-ready. To have a leader and trailer added ($25 charge), use code letter C instead.
D = 13" reel, machine-ready
EIA-481 embossed plastic tape. Factory order only, not stocked (1500 parts per full reel).
2 Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/HP 16193 fixture in Agilent/HP 4284A impedance analyzer or equivalents.
3 SRF measured using Agilent/HP 8753D network analyzer or equivalent and a Coilcraft SMD-F test fixture.
4 DCR measured at 25°C on a Keithley 580 micro-ohmmeter or equivalent. For other operating temperatures, use this DCR at Temperature calculator.
6 Irms: Current that causes the specified temperature rise from 25°C ambient. Because of their open construction, these parts will not saturate. This information is for reference only and does not represent absolute maximum ratings.
7 Ambient temperature range: −40°C to +85°C with (40°C) Irms current
8 Storage temperature range: Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
9 Maximum part temperature: +125°C (Ambient + temperature rise)
10 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
11 Electrical specifications at 25°C.
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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Updated: April 16, 2018