C1154-BL Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 457
Flyback Transformer ForMaximMAX5941A
PoE Interface/PWM Controller
• Dual-output continuous-current flyback transformer
• Operates with 18 – 72 Volts input
• 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 4.9 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
Inductance Inductance
Part
at 0 A²
at Ipk³
number¹ ±10% (µH) min (µH)
C1154-BL_ 255.0
229.5
DCR max (Ohms)
N1
N2
N3 N4
N5
0.335 0.020 0.017 0.200 0.745
Leakage
inductance⁴
max (µH)
Turns ratio
N1 : N2 : N3 : N4 : N5
5.0
1 :0.1 :0.075 :0.125 :0.425
Ipk³
(A)
0.25
1. When ordering, please specify packaging code:
C1154-BLD
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 275 kHz, 1.0 Vrms.
3. Peak primary current drawn at minimum input voltage.
4. Leakage inductance is for the primary winding with the secondary
windings shorted.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Dot indicates pin 1
1
0.677 _max
17,20
C1154-B
6
0.865
21,97
max
0.335 _max
8,51
0.079
2,01
0.590
14,98
0.693
17,60
0.028
12 ^0,72
1
0.098
2,5
0.07
1,79
12
7
0.135
0.665
3,43
16,88
0.098
2,5
Recommended
Land Pattern
0.004 /0,10
1
N1
Primary
12
11
N5
Bias
2
8
N2
Secondary
3.3 V
5
7
N3
Secondary
2.5 V
6
9
N4
Drive
5V
4
© Coilcraft, Inc. 2010
Specifications subject to change without notice.
Please check our website for latest information.
Document 457 Revised 10/28/08