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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

Flyback Transformer

RoHS compliant
  • Flyback transformer for 10 W PoE applications
  • Developed to work with TI TPS23753A PoE controller

Buy Now:
Count Unit price
1 $2.94
175 $2.53
700 $2.20
1400 $1.91
2800 $1.65
5000 $1.51

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

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

Typical Application

Works with Texas Instruments TPS23753A

Input Voltage Output Power
Sec Sync Bias
42 V 57 V 5 V , 2 A 5 V 10 V , 0.02 A 10 W


Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
at 0A (µH) 2
(Tolerance: ±7%)
min at   1.1 A (µH)
DCR max (Ω) 3 Leakage
max (µH) 4
Turns Ratio Capacitance
max (pF) 5
Voltage (Vrms) 6
Pri Sec Sync Bias Pri : Sec : Sync : Bias
PA6340-AL_ 133.0 123.7 0.330 0.014 0.190 0.230 1.50 1 : 0.167 : 0.167 : 0.361 70 1500
  1. When ordering, please specify packaging code: e.g. PA6340-ALD
  2. Inductance is for the primary, at 1 kHz, 0.5 Vrms, 0 Adc using an Agilent/HP 4263B impedance analyzer or equivalent.
  3. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. Leakage inductance is for the primary and is measured between pins 1 and 2 with all other windings shorted.
  5. Capacitance is measured from pins 1,2 to pins 6,10 at 250 kHz, 0.5 Vrms.
  6. Isolation (hipot): 1500 Vrms, one minute from primary and bias to secondary and sync


  • RoHS tin-silver-copper (95.5/3.8/0.7) over tin over nickel over phos bronze.


  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (175 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 +125°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):



Primary and secondary windings to be
connected in series on the PC board.

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 part_or_c.gif
175 330 100 13 50,4 44,4 32 28 4 2 12,93 0,5

General specification

Core Material:
6.2 g
175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 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.