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參數資料
| 型號： | GA3271-ASD |
| 廠商： | COILCRAFT INC |
| 元件分類： | 開關電源變壓器 |
| 英文描述： | 13 W, SMPS TRANSFORMER |
| 文件頁數： | 1/1頁 |
| 文件大小： | 177K |
| 代理商： | GA3271-ASD |
Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Flyback
Transformer
Document 629
Document 629
Revised 10/28/08
1. When ordering, please specify
termination
and
packaging
codes:
GA3271-A
LD
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 ($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.
Inductance Inductance
at 0 A
2
±10% (μH)
117.5
Leakage
inductance
5
max (μH)
0.815
Part
Power
(W)
13
at
I
pk
3
min (μH)
104.0
DCR max (Ohms)
4
pri
sec
0.201
0.06
Turns ratios
6
pri:sec
1 : 0.457 1 : 0.571
I
pk
3
(A)
1.0
number
1
GA3271-AL_
bias
0.335
pri:bias
Output
7
12 V, 1.0 A
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.
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
Only pure water or alcohol recommended
Flyback transformer for 13 W PoE applications
Designed to operate with 30 – 60 V input at 275 kHz
1500 Vrms isolation from primary to secondary windings
For Maxim MAX5941B
PWM Controller
Primary windings and secondary windings
to be connected in parallel on PC board.
3
10
5
12
8
7
1
2
Bias
Pri
Sec
6
11
0.135
3,43
0.07
1,79
0.098
2,5
1
12
0.340
8,64
0.079
2,01
0.865
21,97
0.590
14,98
0.677
17,20
0.693
17.60
0.665
16,88
0.028
0,72
0.098
2,5
max
Dot indicates pin 1
max
max
1
1
12
12
6
6
7
7
Recommended
Land Pattern
0.004/0,10
GA3271-AL
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| GA3291- | 制造商:Coilcraft Inc 功能描述:Transformer, for AS1130, 2.5A, SMT, RoHS |
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