291A-01K - Frontier Electronics

291A & 291B Series – SMD AIR WOUND COIL
Rev. A
A. Electrical Specifications:
P/N
Turns
L
(nH)
Tol.
Q
Min.
Test Freq.
(MHz)
DCR max.
(mΩ)
SRF min.
(GHz)
I DC max.
(A)
291A-01_
291A-02_
291A-03_
291A-04_
291A-05_
291B-06_
291B-07_
291B-08_
291B-09_
291B-10_
1
2
3
4
5
6
7
8
9
10
2.5
5.0
8.0
12.5
18.5
17.5
22.0
28.0
35.5
43.0
K
K, J
J, G
J, G
J, G
J, G
J, G
J, G
J, G
J, G
145
140
140
137
132
100
102
105
112
106
150
150
150
150
150
150
150
150
150
150
1.1
1.8
2.6
3.4
3.9
4.5
5.2
6.0
6.8
7.9
12.5
6.5
5.0
3.3
2.5
2.2
2.1
1.8
1.5
1.2
4
4
4
4
4
4
4
4
4
4
B. Dimensions: mm (Inch):
Series
a
b
c
d
e
f
g
h
i
j
291A
3.05
(0.120)
3.18
(0.125)
3.68
(0.145)
3.30
(0.130)
1.65
(0.065)
2.79
(0.110)
1.27
(0.05)
Max.
Max.
Max.
Typ.
Typ.
Typ.
Typ.
Typ.
291B
3.05
(0.120)
3.18
(0.125)
6.86
(0.270)
7.24
(0.285)
3.30
(0.130)
4.70
(0.185)
2.79
(0.110)
1.27
(0.05)
Tol.
Max.
Max.
Max.
2.92
(0.115)
±0.25
(0.010)
5.84
(0.230)
±0.25
(0.010)
4.19
(0.165)
Tol.
0.58
(0.023)
±0.38
(0.015)
0.58
(0.023)
±0.38
(0.014)
Typ.
Typ.
Typ.
Typ.
Typ.
Foot Print
C. General Information:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
P/N: 291A-xx_, “291A” = Type, “xx” = Dash number, “_” = Inductance tolerance
P/N: 291B-xx_, “291B” = Type, “xx” = Dash number, “_” = Inductance tolerance
Tolerance “_”: G: ± 2%, J: ± 5%, K: ± 10%
Small and lightweight surface mounting type
High Q at high frequency
High self-resonance frequency
Maximum Temperature Rise: 15ºC (when measured at 25ºC ambient)
Inductance & Q measured with HP4291B Impedance Analyzer with HP16193 test fixture
SRF measured using the HP8753E Network Analyzer or equivalent
DCR measured using the Chroma 16502 or equivalent
Operating temperature: -40°C to +125ºC
Storage temp. : -40ºC to +85ºC
Inductance and Current Range: From 2.5 nH (4.0A) to 43.0 nH (4.0A)
SRF: From 1200 MHz to 12500 MHz
MSL: Level 1
D. Applications:
1.
2.
3.
4.
5.
6.
Game Consoles
Set Top Boxes
Cables Modems
Computers
Mobile Communication Devices (Cell Phones, Radios, etc.)
RF Filters
Frontier Electronics Corp.®
http://www.frontierusa.com
Page 1 of 2
667 E. Cochran St., Simi Valley, CA 93065
Phone: 1-805-522-9998, Fax: 1-805-522-9989
291A & 291B Series – SMD AIR WOUND COIL
Rev. A
E. Characteristic Curve
Inductance vs. Frequency
291A Series
291B Series
150
25
Inductance (nH)
Inductance (nH)
291A-05
20
291A-04
15
10
291A-03
5
291A-02
291A-01
1000
100
100
291B-09
291B-08
50
291B-07
291B-06
0
0
10
291B-10
1000
10
Frequency (MHz)
100
1000
10000
Frequency (MHz)
Q vs. Frequency
291A Series
291B Series
210
291A-01
291A-02
291A-03
291A-04
291A-05
180
150
120
Q
90
60
30
0
100
1000
10000
Frequency (MHz)
Frontier Electronics Corp.®
http://www.frontierusa.com
Page 2 of 2
667 E. Cochran St., Simi Valley, CA 93065
Phone: 1-805-522-9998, Fax: 1-805-522-9989