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Radial Lead Inductors(Coils)
For Signal Line(Magnetic Shielded)
ELF Series ELF0708
FEATURES
• The ELF series inductors are available in ranging from 0505 to
1010 types.
• Because they are magnetically shielded, these parts can be
used in high-density mounting configurations.
• With a miniature winding construction, these inductors
nonetheless achieve high Q characteristics.
• Available in tape packaging to support automated mounting
machines.
• Terminal platings and internal connecting solder use lead-free
materials.
• This product conforms to the standards that are slated to be
introduced under the RoHS Directive.
APPLICATIONS
Televisions, VCRs, personal computers, and other electronic
equipment.
SPECIFICATIONS
Operating temperature range
Storage temperature range
Terminal tensile strength
–20 to +80°C
[Including self-temperature rise]
–40 to +80°C [Unit of products]
24.5N min.
Conformity to RoHS Directive
PRODUCT IDENTIFICATION
ELF 0708 RA- 100 K - PF
(1) (2) (3) (4) (5) (6)
(1)Series name
(2)Dimensions
0708
ø7.7× 8mm (lead pitch 5mm)
(3)Packaging style
RA
SKI
Ammo-pack
Bulk
(4)Inductance value
100
101
102
103
10µH
100µH
1000µH
10000µH
(5)Inductance tolerance
J
K
±5%
±10%
(6)Lead-free compatible product
PF
Lead-free compatible product
RECOMMENDED SOLDERING CONDITIONS
FLOW SOLDERING
10s max.
260˚C max.
Natural
cooling
170˚C
150˚C
Pre-heating
60 to 120s
PACKAGING STYLE AND QUANTITIES
Packaging style
Ammo-pack
Bulk
Quantity
1000 pieces
200 pieces/pack
Time (s)
IRON SOLDERING
Tip temperature
Heating time
350°C max.
5 seconds/soldering
• The use of reflow soldering is not guaranteed.
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
• All specifications are subject to change without notice.
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AMMO-PACK TAPING STYLE
SHAPES AND DIMENSIONS
271
J
ø7.7max.
8max.
12max.
28.5max.
ø0.62±0.05
5+0.8, –0.2
Dimensions in mm
ELECTRICAL CHARACTERISTICS
Inductance
(µH)
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
1000
1200
1500
1800
2200
2700
3300
3900
∗1
Inductance
tolerance
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
Q min.
25[ref.]
25[ref.]
25[ref.]
25[ref.]
25[ref.]
25[ref.]
25[ref.]
25[ref.]
25[ref.]
25[ref.]
25[ref.]
25[ref.]
30
30
30
30
30
30
35
35
35
35
35
35
40
40
40
40
40
40
30
30
Test
frequency
L, Q (MHz)
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.796
0.252
0.252
0.252
0.252
0.252
0.252
0.252
0.252
Self-
resonant
frequency
(MHz)ref.
23
19
16
14
13
12
11
10
9.4
8.7
8
7.3
6.7
6.2
5.6
5.2
4.7
4.3
4
3.7
3.4
3.1
2.9
2.7
2.4
2.2
2
1.9
1.7
1.6
1.4
1.3
DC
resistance
(Ω)max.
0.19
0.2
0.22
0.24
0.26
0.28
0.3
0.33
0.35
0.48
0.52
0.57
0.66
0.75
0.89
1
1.2
1.5
1.8
2.1
2.5
3
3.7
4.4
5.6
6.8
9.8
11
13
17
34
38
Rated current (mA)
∗1
max.
Based on
Based on
inductance
temperature
change
rise
550
795
500
775
450
740
410
705
380
680
340
655
310
630
280
605
260
585
240
500
215
480
200
460
180
425
165
400
145
365
135
345
120
315
110
285
100
260
92
240
84
220
76
200
70
180
63
165
58
145
53
135
47
110
43
105
40
100
35
85
33
59
30
56
Part No.
ELF0708RA-100
ELF0708RA-120
ELF0708RA-150
ELF0708RA-180
ELF0708RA-220
ELF0708RA-270
ELF0708RA-330
ELF0708RA-390
ELF0708RA-470
ELF0708RA-560
ELF0708RA-680
ELF0708RA-820
ELF0708RA-101
ELF0708RA-121
ELF0708RA-151
ELF0708RA-181
ELF0708RA-221
ELF0708RA-271
ELF0708RA-331
ELF0708RA-391
ELF0708RA-471
ELF0708RA-561
ELF0708RA-681
ELF0708RA-821
ELF0708RA-102
ELF0708RA-122
ELF0708RA-152
ELF0708RA-182
ELF0708RA-222
ELF0708RA-272
ELF0708RA-332
ELF0708RA-392
∗2
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
Rated current: Value obtained when current flows and the temperature has risen to 20°C or when DC current flows and the initial value of inductance has
fallen by 10%, whichever is smaller.
∗2
: Please specify inductance tolerance, K(±10%) or J(±5%)
• Test equipment L, Q: YHP4340A Q METER, or equivalent
L (Measurement frequency 1kHz): YHP4261A LCR METER or equivalent
Rdc: MATSUSHITA VP-2941A DIGITAL MILLIOHM METER, or equivalent
SRF: TAKEDA RIKEN TR-4100 TRACKING SCOPE, or equivalent
• All specifications are subject to change without notice.
002-05 / 20060415 / e512_elf0708.fm
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ELECTRICAL CHARACTERISTICS
Inductance
(µH)
4700
5600
6800
8200
10000
12000
15000
18000
22000
27000
33000
∗1
Inductance
tolerance
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
±10, ±5%
Q min.
30
30
30
30
25
25
25
20
20
20
20
Test
frequency
L, Q (MHz)
0.252
0.252
0.252
0.252
0.001
∗3
/
0.0796
∗4
0.001/0.0796
0.001/0.0796
0.001/0.0796
0.001/0.0796
0.001/0.0796
0.001/0.0796
Self-
resonant
frequency
(MHz)ref.
1.2
1.1
0.97
0.9
0.8
0.75
0.68
0.6
0.54
0.48
0.42
DC
resistance
(Ω)max.
44
51
59
68
80
92
110
120
130
160
180
Rated current (mA)
∗1
max.
Based on
Based on
inductance
temperature
change
rise
28
52
25
49
23
45
21
42
19
17
15
14
12
11
10
39
36
33
30
25
20
17
Part No.
ELF0708RA-472
ELF0708RA-562
ELF0708RA-682
ELF0708RA-822
ELF0708RA-103
ELF0708RA-123
ELF0708RA-153
ELF0708RA-183
ELF0708RA-223
ELF0708RA-273
ELF0708RA-333
∗2
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
-PF
Rated current: Value obtained when current flows and the temperature has risen to 20°C or when DC current flows and the initial value of inductance has
fallen by 10%, whichever is smaller.
∗2
: Please specify inductance tolerance, K(±10%) or J(±5%)
∗3
for L
∗4
for Q
• Test equipment L (Measurement frequency 1kHz): LCR METER YHP4261A or equivalent
Q:
YHP4340A Q METER, or equivalent
Rdc: MATSUSHITA VP-2941A DIGITAL MILLIOHM METER, or equivalent
SRF: TAKEDA RIKEN TR-4100 TRACKING SCOPE, or equivalent
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE CHANGE vs. DC SUPERPOSITION
CHARACTERISTICS
LCR
meter
Test circuit L=5H C=20000µF
A
DC
Specimen
10000
5000
2700µH
1000µH
330µH
100µH
100
50
33µH
10000µH
INDUCTANCE CHANGE vs. TEMPERATURE
CHARACTERISTICS
6
∆L
/L (%)
4
2
0 20 40
0
Temperature (˚C)
–2
–4
60
80
10mH
1000µH
100µH
10000µH
100µH
10000µH
10µH
1000µH –20
1000
500
Inductance (
µH
)
–6
YHP 4275A LCR METER
f=10kHz
Q vs. FREQUENCY CHARACTERISTICS
70
60
3300µH
15000µH
100µH
Q
10
5
10µH
50
40
30
1
10µH
1
5
10
50 100
DC current (mA)
500 1000
20
Q-METER 4340A YHP
10
0.02 0.05 0.1 0.2
0.5 1
2
5
Frequency (MHz)
10 20
50
• All specifications are subject to change without notice.
002-05 / 20060415 / e512_elf0708.fm
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