GA3271_13 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 629
Flyback Transformer ForMaximMAX5941B
PWM Controller
• Flyback transformer for 13 W PoE applications
• Designed to operate with 30 – 60 V input at 275 kHz
• 1500 Vrms, one minute isolation from primary to secondary
windings
Core material Ferrite
Terminations  RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight  5.5 g
Ambient temperature  –40°C to +125°C
Storage temperature  Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat  Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)  1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging  200 per 13″ reel  Plastic tape:  44 mm wide, 0.4 mm thick,
28 mm pocket spacing, 9.6 mm pocket depth
PCB washing  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf

Part Power
  _number1 _(W)
GA3271-AL_ 13
Inductance Inductance
Leakage
  _{at 0 A}2
  _{at Ipk}3 ^  DCR max (Ohms)⁴   _inductance5 Turns ratios⁶   _Ipk3
±10% (µH) min (µH) pri sec bias max (µH) pri : sec pri : bias (A) ^  Output⁷
117.5
104.0 0.201 0.06 0.335 0.815 1 : 0.457 1 : 0.571 1.0   12 V, 1.0 A
1. When ordering, please specify termination and packaging codes:
GA3271-ALD
Termination: L = RoHS tin-silver over tin over nickel over phos bronze.
Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37).
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
1
($25 charge), use code letter D instead.
2. Inductance is for the primary, measured at 250 kHz, 0.1 Vrms.
3. Peak primary current drawn at minimum input voltage.
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. Output of the secondary is with the windings connected in parallel. Bias winding output is 15 V, 20 mA.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.677 _max
17,20
6
1
2
Pri
11
12
10
Bias
8
7
0.004 /0,10
Sec
Recommended
Land Pattern
6
5
0.135
3,43 ₁
0.665
16,88
0.098
2,5
12
6
Parts manufactured
prior to December 2011
may be marked differently.
Dot indicates pin 1
12
GA3271-AL
XXXX Y
7
0.865 _max
21,97
0.693
17.60
0.590
14,98
0.340
8,64
max
0.079
2,01
0.028
0,72
7
3
Primary windings and secondary windings
to be connected in parallel on PC board.
0.07
1,79
1
12
0.098
2,5
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 629  Revised 12/14/11
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.