C1048-AL Datasheet, PDF (1/1 Pages) Coilcraft lnc. – SMT Power Transformer

Document 452
SMT Power Transformer ForLinearTechnologyLT1725
Isolated Flyback Controller
• Can be used in isolated and nonisolated designs
• Operates with 36 – 72 Volts input; can be used for PoE.
• 1500 Vrms isolation between the primary and the secondary
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 5.1 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,
0.35 mm thick, 28 mm pocket spacing, 9.6 mm pocket depth
PCB washing Only pure water or alcohol recommended
Part
L at 0 A²
number¹ Power ±10% (µH)
C1048-AL_ 13 W
94.0
L at Ipk³
min (µH)
84.6
DCR max (Ohms)
pri sec⁴ bias
0.210 0.01 0.453
Leakage
L max⁵
(µH)
3.9
Turns ratio
Ipk³
pri : sec⁶ pri : bias (A)
1 : 0.12 1 : 0.47 1.2
Output⁷
5 V, 2 A
1. When ordering, please specify packaging code:
C1048-ALD
Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic
tape (200 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, 0 Adc.
3. Peak primary current drawn at minimum input voltage.
4. DCR is for both windings of the secondary connected in parallel.
5. Leakage inductance is for the primary winding with the secondary
windings shorted.
6. Turns ratio is with the secondary windings connected in parallel.
7. Output is with the secondary windings connected in parallel. Output of
the bias winding with a 15 V, 0.2 A.
8. Operating temperature range –40°C to +125°C.
9. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
1
0.677
17,20
max
6
0.335
8,51
max
0.079
2,01
Dot indicates pin 1
0.028
0,72
12
0.098
2,5
Recommended 0.07
Land Pattern
1,79
1
12
0.098
2,5
7
0.865
21,97
max
0.135
3,43
0.665
16,88
2
Primary
10
9
Secondary
4
11
12
6
Bias
1
Secondary windings to be connected in
parallel on PC board
0.590
14,98
0.693
17.60
0.004 /0,10
Specifications subject to change without notice.
Please check our website for latest information.
Document 452 Revised 10/28/08
© Coilcraft, Inc. 2009