CU8758 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 1298
Flyback Transformer ForMaximMAX17597
Flyback Configuration
• Mounted on Maxim MAX17597 Evaluation Kit
• 18 V ­– 36 V primary input
• 24 V, 0.833 A output
• 1500 Vrms, one minute isolation between primary and secondary
Core material Ferrite
Terminations  RoHS tin-silver-copper (96.5/3.0/0.5) over tin over
nickel over phos bronze. Other terminations available at additional cost.
Weight  13.4 g
Ambient temperature  –40°C to +125°C
Maximum part temperature  135°C (ambient + temp rise)
Storage temperature  Component: –40°C to +125°C.
Tray 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 100 parts per tray
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.

Part
  _number
CU8758-AL
Inductance
  _{at 0 Adc}1
±10% (µH)
33
Inductance
  _{at Ipk}2   DCR max (Ohms)
min (mH)
pri    sec
26
0.03 0.041
Leakage
  _Inductance3
  _{Turns ratio}
max (µH)
pri : sec
  _Ipk2
(A)
0.8
1 : 1.85 3.3
  _Output
24 V, 0.833 A
1. Inductance is for the primary, measured at 200 kHz, 0.1 Vrms.
2. Peak primary current drawn at minimum input voltage.
3. Leakage inductance is for the primary winding with the secondary
winding shorted.
4. Electrical specifications at 25°C.
0.512
13,0
max
Dot indicates
pin 1
0.827
21,0
max
CU8758-AL
XXXX Y
3
5
4
6
Pri
Sec
1
7
2
8
The following pins
to be connected
on the PC board:
Pins 1 – 2
Pins 3 – 4
Pins 5 – 6
Pins 7 – 8
0.138
3,5
4
0.197
5,0
0.689
17,5
0.134
3,4
0.00,264_âˆ
Internal
code
0.689
17,5
5
1
8
0.197
5,0
1
8
0.846
21,5
max
0.039
1,0
∅
4
5
Recommended
PC Board Layout
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Dimensions are in
inches
mm
Document 1298  Revised 06/06/16
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.