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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

B0226-EL Flyback Transformer

RoHS compliant
  • Optimized for use with On Semiconductor NCP1030 power converter
  • Interleaved primary and secondary windings for low leakage inductance
  • Ideal for 48 V telecom power supply and Power Over Ethernet (PoE) applications

Buy Now:
Count Unit price
1 $4.77
300 $3.44
600 $3.08
1200 $2.40

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

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with ON Semiconductor NCP1030

Input Voltage Output Power Fsw
Sec1 Sec2
35 V 76 V 12 V , 0.17 A 12 V , 0 A 2 W 275 kHz


Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
at 0A (µH) 2
(Tolerance: ±10%)
min at   0.4 A (µH)
DCR max (Ω) Leakage
max (µH) 3
Turns Ratio Isolation
Voltage (Vrms) 4
Pri Sec1 Sec2 Pri : Sec1 : Sec2
B0226-EL_ 120 102 0.364 0.248 0.248 0.95 1 : 0.36 : 0.36 1500
  1. When ordering, please specify packaging code: e.g. B0226-ELD
  2. Inductance is for the primary, measured at 275 kHz, 0.5 Vrms.
  3. Leakage inductance is for the primary winding with the secondary windings shorted.
  4. Isolation (hipot) 1500 Vrms, one minute between the primary and secondary windings.


  • RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations.


  • D = 13″ 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 D.
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
–40°C to +85°C
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+125°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):



Physical characteristics


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 orientation-(1).gif
600 330 100 13 30,4 24,4 24 16 4 2 6,1 0,37

General specification

Core Material:
0.96 g
600 per 13″ reel Plastic tape: 24 mm wide, 0.37 mm thick, 16 mm pocket spacing, 6.1 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 with pure water or alcohol only. More info.