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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



RoHS compliant

For more information and specification about the part.

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Count Unit price
1 $10.26
300 $9.54
600 $5.74
1200 $4.46
2400 $3.82
5000 $3.50

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Electrical specifications at 25°C.

Isolation Transformer

Part number 1 Inductance (µH) 2 DCR max (Ω) 3 Isolation
Voltage (Vrms) 4
Irms (A) 5
HPX2126L_ 850 0.24 1500 1.9
  1. When ordering, please specify packaging code: e.g. HPX2126LD, HPF2187LC
  2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc.
  3. DCR is for each winding, measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. Isolation is measured from primary to secondary of each transformer.
  5. Current flowing through each secondary that causes a 20°C temperature rise from 25°C ambient


  • RoHS Tin-silver-copper over tin over nickel over phos bronze. Other terminations available at additional cost.


  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (300 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 D.
RoHS compliant
Ambient temperature range:
−40°C to +85°C
Storage temperature range:
Component: −40°C to +85°C
Tape and reel packaging: −40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

L vs Offset Current (Isolation Transformer)

Common Mode Rejection


Differential to Common Mode Rejection

Insertion Loss

Return Loss

Physical characteristics

HPX2126L Isolation Transformer


HPF2187L Common Mode Choke


Tape and Reel specification


Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
  13" (330 mm) A B C D E W P Po P1 H T part_or_c.gif
HPX2126L 300 330 100 13 38,4 32,4 32 20 4 2 11,0 0,5
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_w.gif
HPF2187L 500 1500* 178/330 60/100 13 22,4 16,4 16 12 4 2 3,1 0,3
* Special order

General specification

Core Material:
HPF2187L: 240 mg; HPX2126L: 3.9 g
HPF2187L: 500/7″ reel; 2000/13″ reel; Plastic tape: 16 mm wide, 0.35 mm thick, 8 mm pocket spacing, 4.4 mm pocket depth
HPX2126L: 300/13″ reel; Plastic tape: 32 mm wide, 0.5 mm thick, 20 mm pocket spacing, 11 mm pocket depth


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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