C1154_15 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, one minute isolation between the primary and the
secondary
Core material Ferrite
Terminations  RoHS tin-silver (96.5/3.5) 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.
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,
0.35 mm thick, 28 mm pocket spacing, 9.6 mm pocket depth
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.

Part
Inductance Inductance
  _{at 0 A}2
  _{at Ipk}3
DCR max (Ohms)
  _number1 _{±10% (µH) min (µH)}
N₁
N₂
N₃ N₄
N₅
C1154-BL_ 255.0
229.5
0.335 0.020 0.017 0.200 0.745
Leakage
  _inductance4
Turns ratio   _Ipk3
max (µH)
N_1  :  N_2  :  N_3  :  N_4  :  N₅
(A)
5.0
1 : 0.1 : 0.075 : 0.125 : 0.425 0.25
1. When ordering, please specify packaging code:
Packaging:
C1154-BLD
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 wind-
ings 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
6
C1154-BL
XXXX Y
0.865
21,97
max
0.340 _max
8,64
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
Internal code ^3,43
Parts manufactured prior
to December 2011 may
be marked differently.
0.004 /0,10
0.665
16,88
Recommended
Land Pattern
0.098
2,5
Dimensions are
in
inches
mm
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
Document 457  Revised 4/30/2015