1278COUPLEDINDUCTORS
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High Reliability Coupled Inductors MS612PND
The MS612PND series of coupled inductors was designed
for high temperature applications – up to 155°C. Tin-lead
(Sn-Pb) terminations are used for the best possible board
adhesion.
The excellent coupling coefficient (k ≥ 0.98) makes it ideal
for use in SEPIC applications. In SEPIC topologies, the
required inductance for each winding in a coupled induc-
tor is half the value needed for two separate inductors,
allowing selection of a part with lower DCR and higher
current handling.
These inductors provide high inductance, high efficiency,
excellent current handling and 500 V isolation in a very
rugged part. They are well suited for use as VRM induc-
tors in high-current DC-DC and VRM/VRD controllers.
They can also be used as two single inductors connected
in series or parallel, as a common mode choke or as a
1:1 transformer.
D1
0.484
12,3
+
+
max
L1
Q1
C1
+
Dot indicates pin1
Dash number
V
V
OUT
L2
C2
Load
IN
1 2 3
X
0.484
12,3
max
–
–
Internal code
Typical SEPIC schematic
Refer to Application Note, Document 639,
“Selecting Coupled Inductors for SEPIC Applications”
0.308 0.010
*
7,8 0,25
Core material Ferrite
Core and winding loss Go to online calculator
0.197
5,0
0.217
5,5
ref
ref
Terminations Tin-lead (63/37) over tin over nickel over phos bronze
Weight: 3.8 g – 4.6 g
0.138
3,5
0.157
4,0
ref
ref
Ambient temperature –55°C to +105°C with Irms current
Maximum part temperature +155°C (ambient + temp rise).
3
2
4
1
2
3
1
4
0.197
0.177
ref
ref
5,0
4,5
Storage temperature Component: –55C to +155°C.
Tape and reel packaging: –55°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
0.059
1,5
0.079
2,0
ref
2
+260°C, parts cooled to room temperature between cycles
ref
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Suggested
Land Pattern
1
Winding-to-winding and winding-to-core isolation 500 Vrms
Enhanced crush-resistant packaging 500/13″ reel;
Plastic tape: 24 mm wide, 0.4 mm thick, 16 mm pocket spacing,
8.1 mm pocket depth
L1
L2
Dimensions are for the mounted part.
Dimensions before mounting can be
an additional 0.012 inch (0,3 mm).
*
4
3
inches
mm
Dimensions are in
Document MS704-1 Revised 08/07/18
®
This product may not be used in medical or high
Fax 847-639-1508
Email cps@coilcraft.com Specifications subject to change without notice.
www.coilcraft-cps.com Please check our web site for latest information.
risk applications without prior Coilcraft approval.
1102 Silver Lake Road
Cary, IL 60013
Phone 800-981-0363
© Coilcraft, Inc. 2018