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GA3271-AL Flyback Transformer

for Maxim MAX5941B PWM Controller

RoHS compliant
  • Developed for Maxim MAX5941B PoE Interface/PWM Controller
  • Designed for 13 W PoE applications
  • RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations
Buy Now:
Count Unit price
1 $3.56
200 $2.85
600 $2.48
1200 $1.93
2400 $1.66
5000 $1.52

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

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

Typical Application

Works with Maxim MAX5941B

Input Voltage Output 1 Power Fsw
Sec Bias
30 V 60 V 12 V , 1 A 15 V , 0.02 A 13 W 275 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 Inductance
at 0A (µH) 3
(Tolerance: ±10%)
Inductance
min at   1 A (µH)
DCR max (Ω) 4 Leakage
Inductance
max (µH) 5
Turns Ratio 6 Isolation
Voltage (Vrms) 7
Pri Sec Bias Pri : Sec : Bias
GA3271-AL_ 117.5 104.0 0.201 0.060 0.335 0.815 1 : 0.457 : 0.571 1500
Notes
  1. Output of the secondary is with the windings connected in parallel. Bias winding output is 15 V, 20 mA
  2. When ordering, please specify termination and packaging codes: GA3271-ALD.
  3. Inductance is for the primary, measured at 250 kHz, 0.1 Vrms.
  4. DCR for the primary and for the secondary are with the windings connected in parallel.
  5. Leakage inductance is for the primary windings with the secondary windings shorted.
  6. Turns ratios are with the primary the secondary windings connected in parallel.
  7. 1500 Vrms, one minute primary to secondary isolation.

Termination:

  • L = RoHS tin-silver over tin over nickel over phos bronze.
  • T = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
  • S = non-RoHS tin-lead (63/37). (Special order)

Packaging:

  • D = 13" machine-ready reel
    EIA 481 embossed plastic tape (200 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 +125°C
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Schematics

ga3271s.gif

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

Physical characteristics

ga3271d.gif

dims_inches_mm-(5).gif

Tape and Reel specification

tapereel_pl-(39).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-(2).gif
200 330 100 13 50,4 44,4 44 28 4 2 9,6 0,4

General specification

Core Material:
Ferrite
Weight:
5.5 g
Packaging:
200 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 28 mm pocket spacing, 9.6 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. For other solvents, see Doc787_PCB_Washing.pdf

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