• 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.
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.
ELF Series ELF0708 Type
PRODUCT IDENTIFICATION
ELF 0708 RA- 100 K -3
(1)
(2) (3) (4) (5) (6)
(1)Series name
(2)Dimensions
0708
ø7.7×8mm (lead pitch 5mm)
(3)Packaging style
RA
Ammo-pack
(4)Inductance value
100
101
10µH
100µH
(5)Inductance tolerance
J
K
±5%
±10%
(6)TDK internal code
(Some products may not have this number. See the main body
for details.)
PACKAGING STYLE AND QUANTITIES
Packaging style
Ammo-pack
Quantity
1000 pieces
• All specifications are subject to change without notice.
(2/3)
001-01 / 20030822 / e512_elf0708.fm
Inductors
For General Applications
Radial
AMMO-PACK TAPING STYLE
SHAPES AND DIMENSIONS
271
J
ELF Series ELF0708 Type
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-100X
∗2
ELF0708RA-120X
ELF0708RA-150X
ELF0708RA-180X
ELF0708RA-220X
ELF0708RA-270X
ELF0708RA-330X
ELF0708RA-390X
ELF0708RA-470X
ELF0708RA-560X
ELF0708RA-680X
ELF0708RA-820X
ELF0708RA-101X
ELF0708RA-121X
ELF0708RA-151X
ELF0708RA-181X
ELF0708RA-221X
ELF0708RA-271X
ELF0708RA-331X
ELF0708RA-391X
ELF0708RA-471X
ELF0708RA-561X
ELF0708RA-681X
ELF0708RA-821X
ELF0708RA-102X
ELF0708RA-122X
ELF0708RA-152X
ELF0708RA-182X
ELF0708RA-222X
ELF0708RA-272X
ELF0708RA-332X
ELF0708RA-392X
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
X: 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.
(3/3)
001-01 / 20030822 / e512_elf0708.fm
Inductors
For General Applications
Radial
ELECTRICAL CHARACTERISTICS
Inductance
(µH)
4700
5600
6800
8200
10000
12000
15000
18000
22000
27000
33000
∗1
ELF Series ELF0708 Type
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-472X
∗2
ELF0708RA-562X
ELF0708RA-682X
ELF0708RA-822X
ELF0708RA-103X
ELF0708RA-123X
ELF0708RA-153X
ELF0708RA-183X
ELF0708RA-223X
ELF0708RA-273X
ELF0708RA-333X
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
X: 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.
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