750311783 Wurth Electronics Inc, 750311783 Datasheet - Page 3
![TRANS FLYBACK LT3748 20UH SMD](/photos/15/55/155534/750311783_sml.jpg)
750311783
Manufacturer Part Number
750311783
Description
TRANS FLYBACK LT3748 20UH SMD
Manufacturer
Wurth Electronics Inc
Series
WE-FBr
Type
For DC/DC Convertersr
Specifications of 750311783
Applications
Flyback Converters
Intended Chipset
LT3573, LT3574, LT3575, LT3748
Voltage - Primary
19 ~ 70V
Voltage - Auxillary
12V @ 10mA
Voltage - Isolation
1500Vrms
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Footprint
1.27" x 1.06" (32.3mm x 27.0mm)
Height Above Board
0.54" (13.7mm)
Chipset Manufacturer
Linear Technology
Inductance
20µH
Transformer Type
Isolation and Data Interface (Encapsulated)
Turns Ratio - Primary:secondary
1.5 : 1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
E.t.
-
Other names
732-2669-2
WE-PMI
Power Multilayer Inductor
Size 0805 / Size 0806
11/10
Electrical properties: Size 0805
Order Code
744 797 752 10
744 797 752 22
I
Inductance vs. Current
Electrical properties: Size 0806
Order Code
744 797 762 22
744 797 762 33
744 797 762 47
I
Inductance vs. Current
R
R
Product of the year
referring to self-heating, I
referring to self-heating, I
2010!*
sat
sat
Inductance
referring to inductance loss of 30%
Inductance
referring to inductance loss of 30%
±20%
±20%
(µH)
(µH)
1.0
2.2
2.2
3.3
4.7
10
10
1
0
1
0
1
1
2.2 µH
min.
min.
1.0 µH
10
12
15
2.2 µH
Q
Q
3.3 µH
4.7 µH
Frequency
Frequency
10
(MHz)
(MHz)
Test
Test
1
1
10
Strom/DC Current (mA)
Strom/DC Current (mA)
±30%
±30%
(mΩ)
(mΩ)
DCR
100
DCR
270
110
130
160
90
7 7
7 7
7 7
7 7
7 7
7 7
* Category Passive Components in the magazine ELEKTRONIK
Characteristics
Compact multilayer type
Suitable for applications with high currents
up to 2.5 A
Magnetically shielded construction: No crosstalk
Operating temperature: –40 °C to +125 °C
Recommended soldering profile: Reflow
Available in two different types
I
I
100
R
R
(mA)
(mA)
@ 20K
@ 20K
800
500
900
800
700
1000
I
I
R
R
(mA)
1100
(mA)
1200
1100
1000
@ 40K
@ 40K
700
10000
1000
(mA)
(mA)
700
500
400
300
250
I
I
sat
sat
(MHz)
(MHz)
min.
min.
SRF
100
SRF
70
75
60
45
4000
3000
Qty.
Qty.
7 7
7 7
Dimensions (in mm)
Land pattern (in mm)
Dimensions (in mm)
Land pattern (in mm)
Applications
DC/DC converters especially at high switching
frequencies (> 1 MHz)
Portable devices like PDA and digital cameras
0,5 ±0,3
0,5 ±0,3
2,0 ±0,2
2,0 ±0,2
0,8
0,8
0,8
0,8
www.we-online.com
0,8
0,8
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