© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Flyback Transformer
Document 483
Document 483
Revised 10/28/08
Inductance
Inductance
Leakage
Part
at 0 Adc2
at Ipk3
DCR max
Inductance4
Turns ratio
Ipk3
number1
±10% (µH)
min (µH)
(Ohms)
max (µH)
pri : sec5
pri : bias
(A)
Output6
C1453-AL_
50
40
0.185 (pins 3 – 1)
1.10
1 : 0.166
1 : 0.5
1.22
3.3 V, 1.5A
0.030 (pins 6 – 10)
0.030 (pins 7 – 9)
0.385 (pins 4 – 5)
1. When ordering, please specify packaging code:
C1453-AL
D
Packaging: D =13
″ machine ready reel. EIA-481 embossed plastic
tape (500 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, 0.3 Vrms.
3. Peak primary current drawn at minimum input voltage.
4. Leakage inductance is for the primary winding with the secondary
windings shorted.
5. Turns ratio is with the secondary windings connected in parallel.
6. Output of the secondary is with the windings connected in parallel. Bias
winding output is 10 V.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
For Texas Instruments TPS23750
PoE Powered Device Controller
10
10
6
5
1
1
1
5
Recommended
Land Pattern
0.453
11,50
0.512
13,00
0.256
6,50
0.394
10,00
0.063
1,60
0.079
2,00
0.055
1,40
0.028
0,70
0.079
2,00
max
Dot indicates pin 1
max
max
0.004 / 0,10
10
6
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 1.4 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 500 per 13
″ reel Plastic tape: 24 mm wide,
0.36 mm thick, 16 mm pocket spacing, 6.13 mm pocket depth
PCB washing Only pure water or alcohol recommended
• Isolated non-synchronous flyback transformers developed
for Texas Instruments PMP717 reference design.
• Designed for discontinuous conduction mode, 34 – 57 V input
• 1500 Vrms isolation primary to secondary windings
10
3
Pri
Bias
Sec
4
1
5
6
7
9
Secondary windings to be
connected in parallel on the
PC board.
Dimensions are in
inches
mm
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
