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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

4310LC Series

Wideband Bias Chokes

RoHS compliant halogen free
Coilcraft 4310LC Series wideband bias chokes provide flat bandwidth with high impedance to 6 GHz. They offer low DCR and excellent current handling and are ideal for use in high-current bias Tee applications.
  • 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

Buy Now:
Count Unit price
1 $2.65
350 $2.00
700 $1.32
1400 $0.94
2800 $0.80
5000 $0.74

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

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Electrical specifications at 25°C.

Part number 1 Inductance (µH) 2
(Tolerance: ±10%)
SRF typ (MHz) 3 DCR max (mΩ) 4 Irms (A) 5
20°C rise 40°C rise
4310LC-132KE_ 1.3 235 15.1 2.7 4.2
4310LC-352KE_ 3.5 188 49.0 2.3 3.1
  1. When ordering, please specify termination and packaging codes: e.g. 4310LC-132KEC
  2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/HP 16193 fixture in Agilent/HP 4284A impedance analyzer or equivalent.
  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.
  5. 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.


  • E = RoHS compliant tin-silver over copper.
  • 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)


  • C = 7″ machine-ready reel. EIA-481 embossed plastic tape (350 parts 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.
  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (1500 parts per full reel).
RoHS compliant , halogen free
Ambient temperature range:
−40°C to +85°C with (40°C) Irms current
Storage temperature range:
Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C
Maximum part temperature:
+125°C (Ambient + temperature rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Insertion Loss

Z vs Frequency

Insertion loss measured in a bias tee configuration with an Agilent/HP 8753ES network analyzer.


Physical characteristics


Tape and Reel specification

Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
7" (178 mm) 13" (300mm) A B C D E W P Po P1 H T part_or_j.gif
350 1500* 178/330 60/100 13 30,4 24,4 24 12 4 2 3.5 0,3
* Special order

General specification

Core Material:
0.42 g
350/7″ reel,1500/13″ reel; Plastic tape: 24 mm wide, 0.3 mm thick, 12 mm pocket spacing, 3.5 mm pocket depth


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
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.
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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