MSD7342-153MLC Datasheet, PDF (1/3 Pages) Coilcraft lnc. – Coupled Inductors - MSD7342

Document 621-1
Coupled Inductors–MSD7342 ForFlyback,SEPIC
and other Applications
0.72,955max
123 ^0.72,955max
Dot indicates
pin 1
1
L1
3
• Tight coupling (k ≥ 0.97) and 200 V isolation make the MSD7342
series of coupled inductors ideal for use in a variety of circuits
including flyback, multi-output buck and SEPIC.
• They provide high inductance, high efficiency and excellent
current handling in a rugged, low cost part.
• Can also be used as two single inductors connected in series
or parallel, as a common mode choke or as a 1 : 1 transformer.
+
D
L1
L2
C
V_IN
C
SW
+
V_OUT
–
–
Typical Flyback Converter
L2 ^{D C}
+
V_OUTAUX
–
+
+
L1
V_IN
D
SW
C
V_OUT
–
–
Typical Buck Converter with auxiliary output
2
+
L2
4
V_IN
L1
Q
C1
L2
D
C
+
V_OUT
04.1,681max
–
–
Typical SEPIC schematic
0.150
3,8
0.028
0,7
0.091
2,3
34
21
0.063
1,6
Dimensions
are in
inches
mm
Recommended
Land Pattern
0.083
2,1
If board traces
are run in these
areas, consider
masking them to
prevent shorting.
0.110
2,8
21
34
0.130
3,3
0.043
1,10
Core material Ferrite
Core and winding loss  Go to online calculator
Terminations  RoHS compliant matte tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight  0.76 – 0.87g
Ambient temperature  –40°C to +85°C with Irms current, +85°C to
+125°C with derated current
Storage temperature  Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Winding to winding isolation  200 Vrms
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  250/7″ reel; 1000/13″ reel  Plastic tape:  16 mm wide,
0.4 mm thick, 12 mm pocket spacing, 4.9 mm pocket depth
PCB washing  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.
US [e-mail] ^notice.
UK +44-1^P2^l3^e6^a-^s7^e30^c5^h9^e5^{ck [e-mail].}
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 621-1  Revised 11/07/13
© Coilcraft Inc. 2013
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.