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Features:

  • Surface mount inductor with high current rating
  • Low resistance to minimize power loss

Applications:

  • For power line DC-DC converter applications used in hard disk, notebook computers and other electronic equipment
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Model Number Expression
Model Number:

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SMRQ
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  (1)   (2)   (3)
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(1): Core Size
(2): Issue No.
(3): Packing Code
Product Name:
SMRQ
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  (1) (2)   (3)   (4)   (5)
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(1): Core Size
(2): Packing Code
(3): Inductance and Tolerance
(4): Use of Non-standard Testing Frequency
(5): Wire Diameter
Dimensions
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 Model Number Inductance Dimensions
SMRQ1C 120nH to 560uH A:3.2 B:1.6 C:1.8 D:0.7
SMRQ1N 150nH to 100uH A:3.2 B:1.6 C:1.8 D:0.7
SMRQ1H 54nH to 880nH A:3.2 B:1.6 C:1.8 D:0.7
SMRQ3C 1uH to 560uH A:3.2 B:2.5 C:2.0 D:0.7
SMRQ3N 100nH to 560uH A:3.2 B:2.5 C:2.0 D:0.7
SMRQ4C 1uH to 470uH A:4.5 B:3.2 C:2.6 D:1.0
SMRQ4N 1uH to 2.2uH A:4.5 B:3.2 C:2.6 D:1.0
SMRQ6C 120nH to 10uH A:5.7 B:5.0 C:4.7 D:1.7

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Data Sheet
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SMRQ1C/RQ3C/RQ4C
- The SMRQ1C/RQ3C/RQ4C series are miniature SMT wire-wound, open magnetic path construction inductors with lower DCR, high current capacity
- They are excellent for use as choke coils in DC/DC converter, DC power supply circuits
- The low cost

SMRQ1C
- The small dimensions (3.2*1.6*1.8mm) allow parallel mounting on 2.5mm centers.
- The maximum current rating up to 970mA for 0.12uH

SMRQ3C
- The small dimensions (3.2*2.5*2.2mm )
- The low DCR, high current & high inductance

SMRQ4C
- Low voltage drop and stable inductance with respect to temperature rise and DC current loading.

Model No.@ L (uH)@ Tol (%)@ DCR (W) Max SRF (MHz) Min IDC (mA)
RQ1C RQ3C RQ4C RQ1C RQ3C RQ4C RQ1C RQ3C RQ4C
R12 0.12 20 0.12 @ @ 250 @ @ 970 @ @
R22 0.22 20 0.15 @ @ 250 @ @ 850 @ @
R47 0.47 20 0.22 @ @ 180 @ @ 700 @ @
1R0 1.0 20 0.38 0.12 0.08 100 96 100 510 800 1080
1R5 1.5 20 @ @ 0.09 @ @ 85 @ @ 1000
2R2 2.2 20 0.55 0.18 0.11 50 64 60 430 600 900
3R3 3.3 20 @ @ 0.13 @ @ 47 @ @ 800
4R7 4.7 20 0.85 0.28 0.15 31 43 35 340 450 750
6R8 6.8 20 @ @ 0.2 @ @ 30 @ @ 720
100 10 10 1.8 0.6 0.24 20 26 23 230 300 650
150 15 10 @ @ 0.32 @ @ 20 @ @ 570
220 22 10 4.0 0.95 0.6 14 19 15 160 250 420
330 33 10 @ @ 1.0 @ @ 12 @ @ 310
470 47 10 10.5 1.8 1.1 10 15 10 80 170 280
680 68 10 @ @ 1.7 @ @ 8.4 @ @ 220
101 100 10 16 5.0 2.2 7 10 6.8 @ 100 190
151 150 10 @ @ 3.5 @ @ 5.5 @ @ 130
221 220 10 @ 12 4.0 @ 6.8 4.5 @ 70 110
331 330 10 @ 14 6.8 @ 5.6 3.6 @ 60 100
391 390 10 @ 23 @ @ 5.0 @ @ 60 @
471 470 10 @ 26 8.5 @ 5.0 3.0 @ 60 90
561 560 10 @ 30 @ @ 5.0 @ @ 60 @
* Test frequency: 1MHz
* The operating temperature range is V25XC to +85XC.
SMRQ6C TYPE
  • is SMT choke which have low DCR, high current capacity, high performance and large inductance.
  • Be used in DC/DC converters and DC power supply circuits.
  • It is open magnetic path construction.
  • The low cost
  • Inductance up to 10000uH
Model No. L(uH) Tol(%) Test Freq. DCR (W) Max SRF (MHz) Min IDC
R12 0.12 20%

1MHz

0.0084 450 6.0
R27 0.27 20% 1MHz 0.0112 300 5.3
R47 0.47 20% 1MHz 0.0154 200 4.8
1R0 1.0 20% 1MHz 0.0224 150 4.0
1R5 1.5 20% 1MHz 0.0266 110 3.7
2R2 2.2 20% 1MHz 0.0336 80 3.2
3R3 3.3 20% 1MHz 0.0406 40 2.9
4R7 4.7 20% 1MHz 0.0476 30 2.7
6R8 6.8 20% 1MHz 0.091 25 2.0
100 10 20% 1MHz 0.1078 20 1.7
150 15 20% 1MHz 0.182 17 1.4
220 22 20% 1MHz 0.224 15 1.2
330 33 20% 1MHz 0.364 12 0.9
470 47 20% 1MHz 0.434 10 0.8
680 68 20% 1MHz 0.812 7.6 0.64
101 100 20% 100KHz 0.98 6.5 0.56
151 150 20% 100KHz 2.1 5.0 0.42
221 220 20% 100KHz 2.52 4.0 0.32
331 330 20% 100KHz 4.9 3.1 0.27
471 470 20% 100KHz 5.88 2.4 0.24
681 680 20% 100KHz 9.24 1.9 0.19
102 1000 20% 100KHz 11.2 1.7 0.15
222 2200 20% 100KHz 23.38 1.2 0.10
472 4700 20% 100KHz 49.98 0.8 0.07
103 10000 20% 100KHz 113.12 0.5 0.05
* The operating temperature range is V25XC to 85XC
SMRQ1N TYPE
  • The small dimensions(3.2*1.6*1.8mm) allow parallel mounting on 2.5mm centersThe
  • maximum current rating up to 970mA for 0.12uH
Model No. Inductance Q DCR (W) SRF (MHz) Min@ IDC (mA)
Value Tol. Test Nominal Test
(uH) (%) Freq. (Min) Freq.
R15 0.15 10 1MHz 20 25MHz 0.3940% 250 250
R22 0.22 10 1MHz 20 25MHz 0.4340% 250 240
R33 0.33 10 1MHz 30 25MHz 0.4540% 250 230
R47 0.47 10 1MHz 30 25MHz 0.8340% 200 215
R56 0.56 10 1MHz 30 25MHz 0.6140% 180 200
R68 0.68 10 1MHz 30 25MHz 0.6740% 160 190
R82 0.82 10 1MHz 30 25MHz 0.7340% 120 185
1R0 1.0 10 1MHz 35 10MHz 0.4930% 100 175
1R2 1.2 10 1MHz 35 10MHz 0.930% 90 165
1R5 1.5 10(5) 1MHz 35 10MHz 1.030% 75 155
1R8 1.8 10(5) 1MHz 35 10MHz 1.630% 60 150
2R2 2.2 10(5) 1MHz 35 10MHz 0.730% 50 140
2R7 2.7 10(5) 1MHz 35 10MHz 0.5530% 43 135
3R3 3.3 10(5) 1MHz 35 8MHz 0.6130% 38 130
3R9 3.9 10(5) 1MHz 35 8MHz 1.530% 35 125
4R7 4.7 10(5) 1MHz 35 8MHz 1.730% 31 120
5R6 5.6 10(5) 1MHz 35 8MHz 1.830% 28 115
6R8 6.8 10(5) 1MHz 35 8MHz 2.030% 25 110
8R2 8.2 10(5) 1MHz 35 8MHz 2.230% 23 105
100 10 10(5) 1MHz 35 5MHz 2.530% 20 100
120 12 10(5) 1MHz 35 5MHz 2.730% 18 95
150 15 10(5) 1MHz 35 5MHz 3.030% 16 90
180 18 10(5) 1MHz 35 5MHz 3.730% 15 85
220 22 10(5) 1MHz 40 2.5MHz 3.130% 14 85
270 27 10(5) 1MHz 40 2.5MHz 3.430% 13 85
330 33 10(5) 1MHz 40 2.5MHz 3.830% 12 80
390 39 10(5) 1MHz 40 2.5MHz 7.230% 11 55
470 47 10(5) 1MHz 40 2.5MHz 8.030% 10 55
560 56 10(5) 1MHz 40 2.5MHz 8.930% 9.0 50
680 68 10(5) 1MHz 40 2.5MHz 9.930% 8.5 50
820 82 10(5) 1MHz 40 2.5MHz 1130% 7.5 45
101 100 10(5) 1MHz 40 2.5MHz 1230% 7.0 45
* Operating temperature range is -25XC to +85XC
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SMRQ3N
-         The small dimensions(3.2*2.5*2.5mm)
-         The low DCR, high current & high inductance
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Model No.   Inductance Q DCR (W)@ SRF (MHz) Min@ IDC (mA)
Value Tol. Test Nominal Test
(uH) (%) Freq. (Min) Freq.
R10 0.10 20 1MHz 20 25.2MHz 0.25 200 700
R18 0.18 20 1MHz 20 25.2MHz 0.25 200 650
R27 0.27 20 1MHz 25 25.2MHz 0.25 200 600
R39 0.39 20 1MHz 25 25.2MHz 0.25 200 530
R56 0.56 20 1MHz 30 25.2MHz 0.25 160 530
R68 0.68 20 1MHz 30 25.2MHz 0.25 160 470
R82 0.82 20 1MHz 30 25.2MHz 0.25 120 450
1R0 1.0 20 1MHz 20 1MHz 0.5 100 445
1R2 1.2 20 1MHz 20 1MHz 0.6 100 425
1R5 1.5 10(5) 1MHz 20 1MHz 0.6 75 400
1R8 1.8 10(5) 1MHz 20 1MHz 0.7 60 390
2R2 2.2 10(5) 1MHz 20 1MHz 0.8 50 370
2R7 2.7 10(5) 1MHz 20 1MHz 0.9 43 320
3R3 3.3 10(5) 1MHz 20 1MHz 1.0 38 300
3R9 3.9 10(5) 1MHz 20 1MHz 1.1 35 290
4R7 4.7 10(5) 1MHz 20 1MHz 1.2 31 270
5R6 5.6 10(5) 1MHz 20 1MHz 1.3 28 250
6R8 6.8 10(5) 1MHz 20 1MHz 1.5 25 240
8R2 8.2 10(5) 1MHz 20 1MHz 1.6 23 225
100 10 10(5) 1MHz 35 1MHz 1.8 20 190
120 12 10(5) 1MHz 35 1MHz 2.0 18 180
150 15 10(5) 1MHz 35 1MHz 2.2 16 170
180 18 10(5) 1MHz 35 1MHz 2.5 15 165
220 22 10(5) 1MHz 35 1MHz 2.8 14 150
270 27 10(5) 1MHz 35 1MHz 3.1 13 125
330 33 10(5) 1MHz 40 1MHz 3.5 12 115
390 39 10(5) 1MHz 40 1MHz 3.9 11 110
470 47 10(5) 1MHz 40 1MHz 4.3 11 100
560 56 10(5) 1MHz 40 1MHz 4.9 10 85
680 68 10(5) 1MHz 40 1MHz 5.5 9 80
820 82 10(5) 1MHz 40 1MHz 6.2 8.5 70
101 100 10(5) 1MHz 40 769KHz 7.0 8.0 80
121 120 10(5) 1MHz 40 769KHz 8.0 7.5 75
151 150 10(5) 1MHz 40 769KHz 9.3 7.0 70
181 180 10(5) 1MHz 40 769KHz 10.2 6 65
221 220 10(5) 1MHz 40 769KHz 11.8 5.5 65
271 270 10(5) 1MHz 40 769KHz 12.5 5 65
331 330 10(5) 1MHz 40 769KHz 13.0 5 65
391 390 10(5) 1MHz 50 769KHz 22.0 5 50
471 470 10(5) 1KHz 50 769KHz 25.0 5 45
561 560 10(5) 1KHz 50 769KHz 28.0 5 40
* Operating temperature range is -25XC to +85XC
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SMRQ4N
 Low voltage drop and stable inductance with respect ot temperature rise and DC current loading.
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Model No. Inductance Q DCR (W) SRF (MHz) Min IDC (mA)
Value (uH) Tol. (%) Test Freq. Nominal (Min) Test Freq.
1R0 1.0 20 1MHz 20 1MHz 0.2 120 500
1R2 1.2 20 1MHz 20 1MHz 0.2 100 500
1R5 1.5 20 1MHz 20 1MHz 0.3 85 500
1R8 1.8 20 1MHz 20 1MHz 0.3 75 500
2R2 2.2 20 1MHz 20 1MHz 0.3 62 500
2R7 2.7 20 1MHz 20 1MHz 0.32 53 500
3R3 3.3 20 1MHz 20 1MHz 0.35 47 500
3R9 3.9 20 1MHz 20 1MHz 0.38 41 500
4R7 4.7 10 1MHz 30 1MHz 0.40 38 500
5R6 5.6 10 1MHz 30 1MHz 0.47 33 500
6R8 6.8 10 1MHz 30 1MHz 0.50 31 450
8R2 8.2 10 1MHz 30 1MHz 0.56 27 450
100 10 10(5) 1MHz 35 1MHz 0.56 23 400
120 12 10(5) 1MHz 35 1MHz 0.62 21 380
150 15 10(5) 1MHz 35 1MHz 0.73 19 360
180 18 10(5) 1MHz 35 1MHz 0.82 17 340
220 22 10(5) 1MHz 35 1MHz 0.94 15 320
270 27 10(5) 1MHz 35 1MHz 1.1 14 300
330 33 10(5) 1MHz 35 1MHz 1.2 12 270
390 39 10(5) 1MHz 35 1MHz 1.4 11 240
470 47 10(5) 1MHz 35 1MHz 1.5 10 220
560 56 10(5) 1MHz 35 1MHz 1.7 9.3 200
680 68 10(5) 1MHz 35 1MHz 1.9 8.4 180
820 82 10(5) 1MHz 35 1MHz 2.2 7.5 170
101 100 10(5) 1MHz 40 796KHz 2.5 6.8 160
121 120 10(5) 1MHz 40 796KHz 3.0 6.2 150
151 150 10(5) 1MHz 40 796KHz 3.7 5.5 130
181 180 10(5) 1MHz 40 796KHz 4.5 5.0 120
221 220 10(5) 1MHz 40 796KHz 5.4 4.5 110
271 270 10(5) 1MHz 40 796KHz 6.8 4.0 100
331 330 10(5) 1MHz 40 796KHz 8.2 3.6 95
391 390 10(5) 1MHz 40 796KHz 9.7 3.3 90
471 470 10(5) 1KHz 40 796KHz 11.8 3.0 80
561 560 10(5) 1KHz 40 796KHz 14.5 2.7 70
681 680 10(5) 1KHz 40 796KHz 17.0 2.5 65
821 820 10(5) 1KHz 40 796KHz 20.5 2.2 60
102 1000 10(5) 1KHz 40 796KHz 25.0 2.0 50
122 1200 10(5) 1KHz 40 796KHz 30.0 1.8 45
152 1500 10(5) 1KHz 40 252KHz 37.0 1.6 40
182 1800 10(5) 1KHz 40 252KHz 45.0 1.5 35
222 2200 10(5) 1KHz 40 252KHz 50.0 1.3 30
* Operating temperature range is -25XC to +85XC
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SMRQ1C/SMRQ1N
  • Same dimensions as SMRQ1C, SMRQ1N series enable design flexibility
  • High Q value and stable inductance at high frequency (30MHz to 150MHz)
  • Their high Q from 30MHz to 150MHz and low DC resistance make them suitable in high-frequence resonator circuits
  • The small dimensions (3.2*1.6*1.8) allow parallel mounting on 2.5mm centers
  • The maximum current rating up to 920mA for54uH
Model No. Inductance Q DCR (W) SRF (MHz) Min IDC (mA)
Value (nH) Tol. (%) Test Freq. Peak Value (Typ) Min. Value Test Freq.
54N 54 10 1MHz 65 50 100MHz 0.03530% 800 920
95N 95 10 1MHz 75 60 100MHz 0.04730% 650 790
R14 145 10 (5) 1MHz 80 60 100MHz 0.06130% 500 700
R21 215 10 (5) 1MHz 85 60 100MHz 0.1130% 430 520
R29 290 10 (5) 1MHz 85 60 100MHz 0.1730% 360 420
R39 390 10 (5) 1MHz 85 60 100MHz 0.2630% 300 330
R50 500 10 (5) 1MHz 85 60 100MHz 0.4430% 270 260
R61 610 10 (5) 1MHz 85 60 100MHz 0.4830% 240 250
R75 750 10 (5) 1MHz 85 60 100MHz 0.7930% 220 190
R88 880 10 (5) 1MHz 90 60 100MHz 0.8630% 200 180
* Opening temperature range is -25C to +85C
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