Lasting. Leaning. Leading 3L Electronic Corp. Web : http://www.3lcoil.com
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DRH SERIES
BASIC MODEL HIGH CURRENT CHOKE
Applications :
．Power supplies and power amplifiers.
．Switching regulators.
．Speaker crossover networks.
．RFI suppression.
Shape and Dimensions (Dimensions are in mm) :
Item A Max. C Typ. D Max. H Min.
DRH1420
21.5 12.0 16.5 3.0
DRH1820
21.5 15.0 21.0 3.0
DRH2620
21.5 22.0 28.0 5.0
DRH3525
28.0 30.0 40.0 3.6
Features : Product Identification :
．High saturation current . DRH 1820 - 100 K - UL
．Wide range of inductance. (1) (2) (3) (4) (5)
．Ideal for using in switching regulated power supply (1) Type : Basic model high current choke .
applications. (2) Style : Core OD=18 mm L=20 mm .
．With center hole for mechanical mounting. (3) Inductance : Example : 100 for 10 uH
．Varnish coated or UL tube. (4) Inductance tolerance: K: ±10%; M: ± 20% .
(5) Sleeve: UL tube, black; No code, no sleeve.
Characteristics : Test equipment and test setup :
．Saturation Current (Isat): The current when the L : LCR meter @ 1kHz .
inductance becomes 10% lower than its initial DCR : Milli-Ω meter .
value.(Ta=20℃) ．Electrical specifications at 25℃
．Operating temperature : -20℃ to 85℃ .
Lasting. Leaning. Leading 3L Electronic Corp. Web : http://www.3lcoil.com
36
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Part No.
L @1kHz DCR (Ω) Max. I sat ( A ) Max.
(uH) 1420 1820 2620 3525 1420 1820 2620 3525
1R0M 1.0 0.003
0.003 - - 28 60 - -
1R2M 1.2 0.003
0.003 - - 26 54 - -
1R5M 1.5 0.004
0.003 - - 23 48 - -
1R8M 1.8 0.004
0.003 - - 21 44 - -
2R2M 2.2 0.005
0.004 - - 19 40 - -
2R7M 2.7 0.005
0.005 - - 17 36 - -
3R3M 3.3 0.005
0.005 - - 15 33 - -
3R9M 3.9 0.006
0.005 0.003 0.003 14 30 32.0 95
4R7M 4.7 0.007
0.005 0.003 0.003 13 28 29.0 95
5R6M 5.6 0.007
0.006 0.003 0.004 12 25 26.0 79
6R8M 6.8 0.008
0.007 0.004 0.004 11 23 24.0 79
8R2M 8.2 0.009
0.007 0.004 0.004 10 21 22.0 69
100K 10 0.010
0.009 0.006 0.005 9.0 19 20.0 61
120K 12 0.011
0.009 0.008 0.005 8.5 17 18.0 55
150K 15 0.015
0.013 0.009 0.006 7.5 15 16.0 49
180K 18 0.016
0.018 0.01 0.008 6.8 14 15.0 41
220K 22 0.025
0.019 0.011 0.009 6.0 13 13.5 38
270K 27 0.030
0.026 0.012 0.01 5.5 11 12.0 36
330K 33 0.040
0.029 0.017 0.011 5.0 10 11.0 31
390K 39 0.046
0.030 0.022 0.012 4.5 9.5 10.0 28
470K 47 0.062
0.035 0.024 0.018 4.0 8.8 9.2 27
560K 56 0.069
0.039 0.026 0.019 3.7 8.0 8.5 26
680K 68 0.077
0.053 0.029 0.021 3.4 7.2 7.6 25
820K 82 0.083
0.060 0.032 0.023 3.1 6.6 7.0 23
101K 100 0.095
0.080 0.034 0.025 2.8 6.0 6.5 20
121K 120 0.127
0.090 0.046 0.028 2.5 5.5 5.8 18
151K 150 0.181
0.098 0.064 0.040 2.3 4.8 5.2 17
181K 180 0.217
0.110 0.072 0.045 2.1 4.4 4.7 15
221K 220 0.240
0.150 0.080 0.050 1.9 4.0 4.3 13
271K 270 0.300
0.213 0.110 0.056 1.7 3.6 3.9 12
331K 330 0.336
0.305 0.122 0.074 1.5 3.3 3.5 11
391K 390 0.460
0.320 0.169 0.082 1.4 3.0 3.2 10
471K 470 0.636
0.355 0.187 0.114 1.3 2.7 2.9 9.2
561K 560 0.696
0.388 0.205 0.125 1.2 2.5 2.7 8.3
681K 680 0.430 0.256 0.139 2.3 2.4 7.6
821K 820 0.590 0.288 0.154 2.1 2.2 6.8
102K 1000 0.818 0.426 0.216 1.9 2.0 6.2
122K 1200 1.140 0.462 0.232 1.7 1.8 5.7
152K 1500 1.260 0.518 0.324 1.5 1.6 5.1
182K 1800 1.390 0.705 0.360 1.4 1.5 4.6
222K 2200 1.540 1.020 0.494 1.2 1.3 4.2
272K 2700 1.140 0.555 1.2 3.8
332K 3300 1.270 0.773 1.1 3.4
392K 3900 1.670 0.845 1.0 3.1
472K 4700 1.860 1.140 0.9 2.9
562K 5600 1.600 2.5
682K 6800 1.760 2.3
822K 8200 1.950 2.0
103K 10000 2.760 1.8
123K 12000 3.040 1.7
153K 15000 3.390 1.5
* Due to the limited space, the catalogue shows the typical specifications only. For more specific details ( characteristics graph, reliability, and others),
kindly invite you to access 3L official website www.3lcoil.com for better known.
