Document 248-1
1812DPS Coupled Inductors
• Coupled inductor optimized for xDSL filtering applications
• Can be used as a common mode choke, 1:1 transformer or
in SEPIC applications
Core material
Ferrite
Terminations
RoHS compliant gold over nickel over moly-manga-
nese. Other terminations available at additional cost.
Weight
0.30 – 0.36 g
Ambient temperature
–40°C to +85°C with
Irms
current, +85°C to
+125°C with derated current
Storage temperature
Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Resistance to soldering heat
Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Temperature Coefficient of Inductance (TCL)
+200 to +700 ppm/°C
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
600/7″reel; 2200/13″ reel Plastic tape: 12 mm wide,
0.25 mm thick, 8 mm pocket spacing, 3.9 mm pocket depth
PCB washing
Only pure water or alcohol recommended
Part number
1
1812DPS-102ML_
1812DPS-222ML_
1812DPS-472ML_
1812DPS-103ML_
1812DPS-153ML_
1812DPS-223ML_
1812DPS-393ML_
1812DPS-473ML_
L
DCR
SRF
±20%
2
Q
max
min
Isat
4
Irms
5
3
(µH) min (Ohms) (MHz) (mA) (mA)
1.0
2.2
4.7
10
15
22
39
47
38
29
43
35
37
38
39
40
0.20
0.33
0.41
0.74
0.96
1.84
2.60
2.66
285
175
102
74
65
54
5.7
4.8
2400 2100
1500 1200
1500 1000
800
780
700
710
500
530
450
420
400
390
1. When ordering, please specify
termination
and
packaging
codes:
1812DPS-473MLC
Termination: L
= Silver-palladium-platinum-glass frit terminations
Special order:
T
= RoHS tin-silver-copper
(95.5/4/0.5) or
S
= non-RoHS tin-lead (63/37).
Packaging: C
= 7″ machine-ready reel. EIA-481 embossed plastic
tape (600 parts per full reel).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge),
use code letter C instead.
D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape (2200 parts per full reel).
2. Per winding. Tested at 100 kHz, 0.1 Vrms, 0 Adc.
3. Q measured at 1 MHz.
4. DC current at which the inductance drops 10% (typ) from its value
without current.
5. Current that causes a 40°C temperature rise from 25°C ambient.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Document 248-1
Revised 10/06/08
stm32/stm8
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