Site Settings

Warehouses
Language settings
Currency settings
Resources
Video Library
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

MA5281 Flyback Transformer

for TI TPS23756 15 W PoE Converter

RoHS compliant
  • Flyback for Texas Instruments TPS23756 High Power/High Efficiency PoE Interface and DC/DC Controller
Buy Now:
Count Unit price
1 $4.80
100 $3.84
250 $3.34
500 $2.91
1000 $2.26
2500 $1.94
5000 $1.78

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 TPS23756

Input Voltage Output 1 Power Fsw
Sec Bias
10 V 57 V 12 V , 1.25 A 11.5 V , 0.02 A 15 W 250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 Inductance
at 0A (µH) 3
(Tolerance: ±10%)
Inductance
min at   2.8 A (µH)
DCR max (Ω) 4 Leakage
Inductance
max (µH) 5
Turns Ratio 6 Isolation
Voltage (Vrms) 7
Pri Sec Drive Bias Pri : Sec : Drive : Bias
MA5281-BL_ 45.0 40.5 0.060 0.058 0.323 0.370 0.550 1 : 0.57 : 0.52 : 0.57 1500
Notes
  1. Output of the secondary is with the windings connected in parallel. Aux winding output is 2.5 V, 20 mA.
  2. When ordering, please specify packaging code: e.g. MA5281-BLD
  3. Inductance is for the primary, measured at 250 kHz, 0.1 Vrms, 0 Adc.
  4. DCR for the primary and the secondary is measured with the windings connected in parallel. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  5. Leakage inductance is for the primary, measured with the windings connected in parallel with the secondary windings shorted.
  6. Turns ratios are with the primary windings and the secondary windings connected in parallel.
  7. 1500 Vrms, one minute isolation from primary and bias to secondary windings.

Termination:

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

Packaging:

  • D = 13" machine-ready reel
    EIA 481 embossed plastic tape (175 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 D instead.
Environmental
Environmental:
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 + temperature rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Schematics

ma5281s.gif

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

Physical characteristics

ma5281d.gif

dims_inches_mm-(3).gif

Tape and Reel specification

tapereel_pl.gif


 
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-(1).gif
175 330 100 13 50,4 44,4 44 28 4 2 11,9 0,4

General specification

Core Material:
Ferrite
Weight:
11.3 g
Packaging:
175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 28 mm pocket spacing, 11.9 mm pocket depth

Soldering/Washing

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.