DOCUMENT : SIG4012-XXX_070
REVISION
: A5
: 1 OF 11
SPECIFICATION FOR APPROVAL
PAGE
SIG0412-XXX Sealed Choke Coil
1. Features
Low profile：3.9mm
x
3.9mm
x
1.2mm
Low coil resistance with large currents.
High magnetic shield construction should actualize high resolution for EMC protection.
100% lead (Pb) free meet RoHS standard
2. Application
Cellular phones, LCD displays, HDDs, DVCs, DSCs, PDAs etc..
3. Type Designation
SIG
4012
–
(1)
(2)
Where
XXX
(3)
(1) Series No :
(2) Size :
4012 = 3.8mm
x
3.8mm
x
1.2mm
(3) Inductance Value :
3R3 = 3.3µH
4. Outline Dimensions
W
L
Code
L
W
T
P
P
P
Dimensions (mm)
3.8
±
0.2
3.8
±
0.2
1.2 Max
1.0
±
0.2
T
Note：This graph is only regard to dimensions spec. For outer appearance, please refer to actual product.
DOCUMENT : SIG4012-XXX_070
REVISION
: A5
: 2 OF 11
SPECIFICATION FOR APPROVAL
5.
Recommend Land Pattern Dimensions
PAGE
The customer shall determine the land dimensions shown above after confirming and safety.
B
A
A
C
3.7
1.6
4.0
Unit : mm
B
C
6. Specifications
Part Number
SIG4012-1R0
SIG4012-1R5
SIG4012-2R2
SIG4012-3R3
SIG4012-4R7
SIG4012-6R8
SIG4012-8R2
SIG4012-100
SIG4012-220
SIG4012-330
SIG4012-470
L0
Inductance
(
µ
H )
@ (0A)
1.0
1.5
2.2
3.3
4.7
6.8
8.2
10.0
22.0
33.0
47.0
R
dc
( m
Ω
)
Heat Rating Current
DC Amps. Idc ( A )
Maximum
2.79
2.52
2.34
2.07
1.62
1.53
1.26
1.17
0.855
0.54
0.45
Saturation Current
DC Amps. Isat ( A )
Typical
2.80
2.40
1.90
1.60
1.40
1.20
1.10
1.00
0.70
0.53
0.46
Typical Maximum Typical
50
60
70
85
110
130
165
200
410
650
850
60
70
84
102
132
156
190
240
492
780
1,020
3.10
2.80
2.60
2.30
1.80
1.70
1.40
1.30
0.95
0.60
0.50
Maximum
2.52
2.16
1.71
1.44
1.26
1.08
0.99
0.90
0.63
0.48
0.41
*
：
If you require another part number please contact with us.
**
：
Inductance Tolerance
±
20%
Note 1.
：
All test data is referenced to 25
℃
ambient.
Note 2.
：
Test Condition
:
1MHz, 1.0Vrms
Note 3.
：
Idc : DC current (A) that will cause an approximate
△
T of 40
℃
Note 4.
：
Isat : DC current (A) that will cause Lo to drop approximately 30%
Note 5.
：
Operating Temperature Range -55
℃
to + 125
℃
Note 6.
：
The part temperature (ambient + temp rise ) should not exceed 125
℃
under worse case operating
conditions. Circuit design , component placement, PWB trace size and thickness, airflow and other
cooling provision all affect the part temperature. Part temperature should be verified in the end
application.
Note 7.
：
The rated current as listed is either the saturation current or the heating current depending
on which value is lower.
DOCUMENT : SIG4012-XXX_070
REVISION
: A5
: 3 OF 11
SPECIFICATION FOR APPROVAL
6-1 Current Characteristic
1.2
INDUCTANCE(µH)
1.0
0.8
0.6
0.4
20
0.2
0.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
DC BIAS(Amps)
0
0.0
0.0
0.4
0.8
1.2
INDUCTANCE(µH)
TEMP RISE (℃)
PAGE
SIG4012-1R0
80
INDUCTANCE(µH)
1.6
SIG4012-1R5
100
80
60
TEMP RISE(
℃
)
TEMP RISE(℃ )
TEMP RISE(
℃
)
60
1.2
40
0.8
INDUCTANCE(µH)
TEMP RISE (℃)
4
40
20
0
0.4
1.6
2.0
2.4
DC BIAS(Amps)
2.8
3.2
3.6
4.0
2.4
INDUCTANCE(µH)
2.0
1.6
1.2
0.8
0.4
0.0
SIG4012-2R2
100
INDUCTANCE(µH)
80
TEMP RISE(
℃
)
60
3.6
3.0
2.4
1.8
INDUCTANCE(µH)
SIG4012-3R3
100
80
60
40
20
0
TEMP RISE(
℃
)
TEMP RISE(
℃
)
INDUCTANCE(µH)
TEMP RISE (℃)
40
20
0
1.2
0.6
0.0
TEMP RISE (℃)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
DC BIAS(Amps)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2
DC BIAS(Amps)
6.0
INDUCTANCE(µH)
5.0
4.0
3.0
2.0
1.0
0.0
SIG4012-4R7
100
INDUCTANCE(µH)
80
TEMP RISE(
℃
)
60
7.0
6.0
5.0
4.0
3.0
2.0
1.0
SIG4012-6R8
100
80
60
INDUCTANCE(µH)
TEMP RISE (℃)
40
20
0
INDUCTANCE(µH)
TEMP RISE (℃)
40
20
0
0.0
0.0
0.2
0.4
0.6
0.8
1.0 1.2 1.4 1.6
DC BIAS(Amps)
1.8
2.0
2.2
2.4
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
DC BIAS(Amps)
10.0
INDUCTANCE(µH)
8.0
6.0
4.0
2.0
0.0
0.0
0.2
0.4
INDUCTANCE(µH)
TEMP RISE (℃)
SIG4012-8R2
60
50
40
30
20
10
TEMP RISE(
℃
)
INDUCTANCE(µH)
12.0
10.0
8.0
6.0
4.0
2.0
0.0
SIG4012-100
100
80
60
INDUCTANCE(µH)
TEMP RISE (
℃
)
40
20
0
0
0.6
0.8
1.0
DC BIAS(Amps)
1.2
1.4
1.6
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
DC BIAS(Amps)
DOCUMENT : SIG4012-XXX_070
REVISION
: A5
: 4 OF 11
SPECIFICATION FOR APPROVAL
25.0
INDUCTANCE(µH)
20.0
15.0
INDUCTANCE(µH)
PAGE
SIG4012-220
100
INDUCTANCE(µH)
80
TEMP RISE(
℃
)
60
40
32.0
28.0
SIG4012-330
100
80
60
TEMP RISE(
℃
)
24.0
20.0
16.0
12.0
8.0
4.0
0.0
0.0
0.1
0.2
0.3
0.4
0.5 0.6 0.7
DC BIAS(Amps)
0.8
0.9
1.0
1.1
INDUCTANCE(µH)
TEMP RISE (℃)
10.0
TEMP RISE (℃)
40
20
0
5.0
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3
DC BIAS(Amps)
20
0
50.0
INDUCTANCE(µH)
40.0
30.0
20.0
10.0
0.0
0.00
0.12
0.24
0.36
SIG4012-470
100
80
60
TEMP RISE(
℃
)
INDUCTANCE(µH)
TEMP RISE (℃)
40
20
0
0.48 0.60 0.72
DC BIAS(Amps)
0.84
0.96
1.08
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