750311439 Wurth Electronics Inc, 750311439 Datasheet - Page 6

• Manufacturer Part Number: 750311439
• Description: TRANS FLYBACK LT3748LT3575 37UH
• Manufacturer: Wurth Electronics Inc
• Series: WE-FBr
• Type: For DC/DC Convertersr

Specifications of 750311439

• Applications: Flyback Converters
• Intended Chipset: LT3573, LT3574, LT3575, LT3748
• Voltage - Primary: 37 ~ 57V
• Voltage - Auxillary: 12V @ 30mA
• Voltage - Isolation: 1500Vrms
• Frequency: 250kHz
• Operating Temperature: -40°C ~ 130°C
• Mounting Type: Surface Mount
• Footprint: 0.70" x 0.53" (17.8mm x 13.5mm)
• Height Above Board: 0.50" (12.7mm)
• Chipset Manufacturer: Linear Technology
• Inductance: 37µH
• Transformer Type: Isolation and Data Interface (Encapsulated)
• Turns Ratio - Primary:secondary: 2 : 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• E.t.: -
• Other names: 732-2644-2

06
WE-AFB LFS
Low Frequency Axial Ferrite Bead
Suppression in the low frequency range
Electrical properties
Order Code
742 772 33
742 772 7
742 772 53
742 772 9
742 772 55
742 772 90
Sorted according to measurement B
Material characteristics
www.we-online.com
0.01
Materials
150 kHz to 30 MHz
(mm)
14.2
16.0
17.5
18.6
26.0
0.1
9.5
A
(mm)
4.75
6.35
10.2
13.0
8.0
9.5
B
1
MnZn
(mm)
28.5
28.5
28.5
28.5
28.5
9.5
C
7 7
7 7
1 MHz
130
100
100
30
90
90
10
Characteristics
Ferrite core made of MnZn, a material which works
in the low frequency range
Operating temperature: –25 ºC to +85 ºC
Impedance (Ω)
1 Turn
NiZn
10 MHz
100
40
80
60
60
50
100
8 W 5000
Material
1000
Cable ∅
≤ (mm)
12.5
4.4
6.0
7.6
9.1
9.8
MHz
7 7
7 7
Dimensions
Comparison of core material
Applications
Especially for applications in the low frequency range
from 150 kHz to 30 MHz
Suppression of electronic ballasts (i.e. neon tube) in
the lighting industry
1000
100
10
C
1
0.1
Frequenz/frequency (MHz)
1
10
NiZn
MnZn
A
B
100
11/10