Type 381EL 105 ºC Ultra-Long Life Snap-In, Aluminum
More than 100,000 Hours Operation at 65 °C and Rated 105 °C Ripple
The new 381EL extends expected life capability to 15 years or
more in typical applications. And that’s with the 105 °C rated
ripple current applied. With 3.5 times the life of our long-life
Type 381LX, the Type 381EL is the choice for hot applications like
industrial power supplies, inverter lighting systems and motor
drives.
Highlights
- High value extended life
- Withstands 7000 hours at 105 °C with rated ripple current
- Expected life more than 100,000 hours at 65 °C with rated ripple
- Rated voltage to 450 Vdc
- 50% more ripple current than 381L
Temperature Range
Rated Voltage Range
Capacitance Range
Capacitance Tolerance
Leakage Current
Ripple Current Multipliers
–40 °C to + 105 °C up to 300 V, –25 ºC to 105 ºC ≥315 V
LE
T
39 µF to 2,200 µF ± 20%
± 20%
≤3 √CV µA, at 5 minutes
Ambient Temperature
45 ºC
2.35
60 ºC
2.20
70 ºC
2.00
Frequency
160 to 450 Vdc
E
85 ºC
1.55
105 ºC
1.00
1.20
1.25
1.40
Specifications
O
0.75
Load Life Test
10
50 Hz 60 Hz 120 Hz 500 kHz 1 kHz kHz &
Up
0.80
1.00
BS
7000 h at full load at 105 °C
∆Capacitance ±20%
ESR 200% of limit
DCL 100% of limit
20,000 h at 85 °C,per EIA IS-749 with 105 ºC ripple current.
∆ Capacitance ±20%
ESR 200% of limit
1000 h at 105 °C
∆ Capacitance ±20%
ESR 200% of limit
DCL 100% of limit
10 to 55 Hz, 0.06” and 10 g max, 2 h each plane
EIA Ripple Life
O
Vibration
Shelf Life Test
RoHS Compliant
CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800
More than 100,000 Hours Operation at 65 °C and Rated 105 °C Ripples
Part Numbering System
381EL
821
M
200
K04
Case
Type
381EL
Cap
390
= 39 µF
122
= 1200 µF
Tolerance
M =
±20%
Voltage
Vdc
Code
2
Insulating
Sleeve
2
= PVC
+D
Blank =
no end disk if <250 V
D =
end disk, any voltage
Type 381EL 105 ºC Ultra-Long Life Snap-In, Aluminum
Outline Drawing
+0.2
0.8 -0.1
6.3 1
2.0max.
4.0
±
Case
Code
H01
H02
H03
H04
H45
H05
J01
J02
J03
J04
J45
J05
DIAMETER
D
mm
22
22
22
22
22
22
25
25
25
25
25
25
inches
0.87
0.87
0.87
0.87
0.87
0.87
0.98
0.98
0.98
0.98
0.98
0.98
25
30
35
40
45
50
25
30
LENGTH
L
mm
LE
T
Typical
Weight
16
19
22
24
28
31
20
Case
K01
K02
K03
K04
K45
K05
DIAMETER
D
(grams)
Code
mm
30
30
30
30
30
30
inches
1.18
1.18
1.18
1.18
1.18
1.18
1.38
1.38
1.38
1.38
1.38
1.38
1.38
A01
A02
A03
A04
A45
A05
A55
35
35
35
35
35
35
35
24
27
31
35
38
Nominal
Size
D x L
(mm)
22 x 25
22 x 30
22 x 30
25 x 25
22 x 35
25 x 30
22 x 40
25 x 30
30 x 25
22 x 45
25 x 35
30 x 30
Cap.
(µF)
820
820
Catalog
Part Number
381EL821M160J042
381EL821M160K022
1.54
1.68
1.82
1.82
1.96
1.96
2.10
2.10
2.10
2.38
2.38
2.38
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.13
0.14
0.14
0.14
0.22
0.22
0.18
0.18
0.16
0.16
0.16
0.13
0.13
0.12
0.12
0.09
1000 381EL102M160J452
1000 381EL102M160K032
1200 381EL122M160J052
1200 381EL122M160K042
1200 381EL122M160A032
1500 381EL152M160K452
1500 381EL152M160A032
1800 381EL182M160K052
1800 381EL182M160A042
2200 381EL222M160A052
Dimensions shown are in mm
Insulated Case Dimensions
inches
0.98
1.18
1.38
1.57
1.77
1.97
0.98
1.18
Note that for 200 volts and under the insulating end disc is optional -
If one is needed add a (+D) to the end of the part numbering system.
LENGTH
L
inches
0.98
1.18
1.38
1.57
1.77
1.97
0.98
1.18
1.38
1.57
1.77
1.97
2.17
25
30
35
40
45
50
25
30
35
40
45
50
55
ESR Max
@ 25º C
Typical
Weight
(grams)
30
35
40
44
49
53
42
48
54
60
67
74
80
Ratings
Cap.
(µF)
270
BS
50
1.97
ESR Max
@ 25º C
Ripple Amps
@ 105 ºC
O
35
1.38
40
1.57
45
1.77
0.66
0.30
0.24
0.20
0.20
0.17
0.17
0.14
0.14
0.14
0.12
0.12
0.12
1.10
1.20
1.30
1.30
1.40
1.40
1.50
1.50
1.50
1.70
1.70
1.70
0.54
0.45
0.45
0.38
0.38
0.32
0.32
0.32
0.26
0.26
0.26
E
mm
160 Vdc (200 Vdc Surge)
0.10
0.10
0.08
0.08
0.08
0.08
0.08
0.06
0.06
0.06
0.06
0.06
Top of
Capacitor
Body
1.5 0.2
6.3 mm pin length
Ripple Amps Nominal
@ 105 ºC
Size
D x L
(mm)
25 x 40
30 x 30
25 x 45
30 x 35
25 x 50
30 x 40
35 x 35
30 x 45
35 x 35
30 x 50
35 x 40
35 x 50
Catalog
O
Part Number
381EL271M160H012
0.12
120 Hz 20 kHz 120 Hz 20 kHz
DF Max
120 Hz (Ω)
(Ω)
(A)
(A)
120 Hz 20 kHz 120 Hz 20 kHz
DF Max
120 Hz (Ω)
(Ω)
(A)
(A)
2.00
2.00
2.20
2.20
2.30
2.30
2.30
2.50
2.50
2.70
2.70
2.90
2.80
2.80
3.08
3.08
3.22
3.22
3.22
3.50
3.50
3.78
3.78
4.06
160 Vdc (200 Vdc Surge)
0.12
330
381EL331M160H022
381EL391M160J012
390
390
470
470
560
560
560
680
680
680
381EL391M160H022
381EL471M160H032
381EL471M160J022
381EL561M160H042
381EL561M160J022
381EL561M160K012
381EL681M160H452
381EL681M160J032
381EL681M160K022
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800
Type 381EL 105 ºC Ultra-Long Life Snap-In, Aluminum
More than 100,000 Hours Operation at 65 °C and Rated 105 °C Ripple
ESR Max
@ 25º C
Cap.
(µF)
220
270
330
330
390
390
470
470
470
560
560
560
680
680
680
820
820
820
Catalog
Part Number
381EL221M180H012
381EL271M180H012
381EL331M180H022
381EL331M180J012
381EL391M180H022
381EL391M180J012
381EL471M180H032
381EL471M180J022
381EL471M180K012
381EL561M180H042
381EL561M180J032
381EL561M180K012
381EL681M180H052
381EL681M180J042
381EL681M180K022
381EL821M180J452
381EL821M180K032
381EL821M180A022
Ripple Amps Nominal
@ 105 ºC
Size
D x L
(mm)
22 x 25
22 x 25
22 x 30
25 x 25
22 x 30
25 x 25
22 x 35
25 x 30
30 x 25
22 x 40
25 x 35
180
180
220
220
Cap.
(µF)
820
1.00
1.10
1.20
1.20
1.30
1.30
1.40
1.40
1.40
1.50
1.50
1.50
1.70
1.70
1.70
2.00
2.00
2.00
2.20
2.20
2.30
1.40
1.54
1.68
1.68
1.82
1.82
1.96
1.96
1.96
2.10
2.10
820
Catalog
Part Number
381EL821M200K042
381EL821M200A022
ESR Max
@ 25º C
Ripple Amps
@ 105 ºC
Nominal
Size
D x L
(mm)
30 x 40
35 x 30
30 x 45
35 x 35
30 x 50
35 x 40
35 x 50
22 x 30
25 x 25
22 x 30
25 x 25
22 x 35
25 x 30
30 x 25
22 x 40
25 x 35
30 x 25
22 x 45
25 x 35
30 x 30
25 x 45
30 x 35
35 x 30
25 x 50
30 x 35
35 x 30
35 x 35
30 x 50
35 x 40
35 x 45
35 x 50
22 x 25
22 x 30
22 x 30
25 x 25
22 x 35
25 x 30
30 x 25
22 x 40
25 x 35
30 x 25
22 x 45
120 Hz 20 kHz 120 Hz 20 kHz
DF Max
120 Hz (Ω)
(Ω)
(A)
(A)
180 Vdc (225 Vdc Surge)
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.13
0.13
0.14
0.14
0.14
0.14
0.80
0.66
0.54
0.54
0.45
0.45
0.38
0.38
0.38
0.32
0.32
0.32
0.26
0.26
0.26
0.22
0.23
0.23
0.19
0.19
0.16
0.17
0.14
0.14
0.09
0.36
0.30
0.24
0.24
0.20
0.20
0.17
0.17
0.17
0.14
0.14
0.14
0.12
0.12
0.12
0.10
0.11
0.11
0.10
0.10
0.08
120 Hz 20 kHz 120 Hz 20 kHz
DF Max
120 Hz (Ω)
(Ω)
(A)
(A)
0.12
0.12
0.12
0.12
0.13
0.13
0.13
0.1
0.22
0.22
0.18
0.18
0.16
0.16
0.13
0.82
0.10
0.10
0.09
0.09
0.08
0.08
0.06
0.41
2.00
2.00
2.20
2.20
2.30
2.30
2.50
0.90
2.80
2.80
3.08
3.08
3.22
3.22
3.50
1.26
1.26
1.40
1.40
1.54
1.54
1.54
1.68
1.68
1.68
1.82
1.82
1.82
1.96
1.96
1.96
2.10
2.10
2.10
2.38
2.80
2.80
3.08
3.22
0.90
0.97
1.05
1.05
1.15
1.15
1.15
1.26
1.26
1.26
1.40
1000 381EL102M200K452
1000 381EL102M200A032
1200 381EL122M200K052
1200 381EL122M200A042
1500 381EL152M200A052
381EL181M250H022
381EL181M250J012
LE
T
381EL221M250J012
0.1
0.67
2.10
30 x 25
270
381EL271M250H032
381EL271M250J022
381EL271M250K012
381EL331M250J032
0.1
0.55
2.38
22 x 50
270
0.1
0.55
2.38
25 x 40
270
0.1
0.55
2.38
30 x 30
330
381EL331M250H042
381EL331M250K012
381EL391M250J032
0.1
0.45
2.80
25 x 45
330
0.1
0.45
2.80
30 x 35
330
0.1
0.45
2.80
35 x 30
390
381EL391M250H452
381EL391M250K022
381EL471M250J452
381EL471M250K032
381EL471M250A022
381EL561M250J052
381EL561M250K032
381EL561M250A022
381EL681M250A032
381EL821M250K052
381EL821M250A042
0.1
0.38
3.08
30 x 40
390
0.1
0.38
3.08
35 x 30
390
470
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.12
0.12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.11
0.38
0.31
0.31
0.31
0.26
0.26
0.26
0.22
0.18
0.18
0.18
0.15
1.80
1.47
1.23
1.23
0.98
0.98
0.98
0.82
0.82
0.82
0.74
3.22
30 x 45
3.22
35 x 35
470
470
560
560
560
680
820
820
3.50
30 x 50
3.50
35 x 40
35 x 50
22 x 25
22 x 30
25 x 25
22 x 30
25 x 25
22 x 35
25 x 30
30 x 25
22 x 40
25 x 35
30 x 30
22 x 45
25 x 35
30 x 30
25 x 40
30 x 35
25 x 50
82
100
120
120
150
150
150
180
180
180
220
4.06
1.40
1.54
1.54
1.68
1000 381EL102M250A452
1200 381EL122M250A052
381EL820M315H012
381EL101M315H022
381EL121M315H022
381EL121M315J012
381EL151M315H032
381EL151M315J022
381EL151M315K012
381EL181M315H042
381EL181M315J032
381EL181M315K012
381EL221M315H452
1.68
1.82
1.82
1.82
1.96
1.96
1.96
2.10
2.10
2.10
2.38
2.38
2.80
381EL221M250H022
1000 381EL102M180K042
1000 381EL102M180A022
1200 381EL122M180K452
1200 381EL122M180A032
1500 381EL152M180K052
1500 381EL152M180A042
2200 381EL222M180A052
220
270
270
330
330
O
0.09
2.30
0.07
2.50
0.07
2.50
0.07
2.90
0.36
1.00
0.30
1.10
0.30
1.10
0.24
1.20
0.24
0.20
0.20
0.20
0.17
0.17
0.17
0.14
0.14
0.14
0.12
0.12
0.10
1.20
1.30
1.30
1.30
1.40
1.40
1.40
1.50
1.50
1.50
1.70
1.70
2.00
BS
200 Vdc (250 Vdc Surge)
0.12
0.80
0.12
0.66
0.12
0.66
0.12
0.54
0.12
0.54
0.45
0.45
0.45
0.38
0.38
0.38
0.32
0.32
0.32
0.26
0.26
0.22
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
381EL221M200H012
381EL271M200J012
381EL271M200H022
O
381EL331M200H022
381EL331M200J012
390
381EL391M200H032
381EL391M200J022
381EL391M200K012
381EL471M200J032
381EL471M200K022
390
390
470
470
470
560
560
560
680
680
820
381EL471M200H042
381EL561M200H452
381EL561M200J032
381EL561M200K022
381EL681M200J042
381EL681M200K032
381EL821M200J052
CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800
E
0.1
0.82
0.41
0.90
0.1
0.67
0.34
1.00
0.34
0.27
0.27
0.27
0.22
0.22
0.22
0.19
0.19
0.19
0.16
0.16
0.16
0.13
0.13
0.13
0.12
0.10
0.10
0.10
0.09
0.90
0.74
0.61
0.61
0.49
0.49
0.49
0.41
0.41
0.41
0.37
1.00
1.10
1.10
1.10
1.20
1.20
1.20
1.30
1.30
1.30
1.40
1.40
1.40
1.50
1.50
1.50
1.70
2.00
2.00
2.20
2.30
0.64
0.69
0.75
0.75
0.82
0.82
0.82
0.90
0.90
0.90
1.00
315 Vdc (365 Vdc Surge)
250 Vdc (300 Vdc Surge)
Type 381EL 105 ºC Ultra-Long Life Snap-In, Aluminum
More than 100,000 Hours Operation at 65 °C and Rated 105 °C Ripple
ESR Max
@ 25º C
Cap.
(µF)
220
220
270
270
270
330
330
330
390
390
470
470
560
680
82
100
100
120
120
150
150
150
180
180
180
220
220
220
270
270
270
330
330
390
390
470
560
56
68
68
82
82
Catalog
Part Number
381EL221M315J042
381EL221M315K022
381EL271M315J452
381EL271M315K032
381EL271M315A022
381EL331M315J052
381EL331M315K042
381EL331M315A022
381EL391M315K452
381EL391M315A032
381EL471M315K052
381EL471M315A042
381EL561M315A452
381EL681M315A052
381EL820M350H012
381EL101M350H022
381EL101M350J012
381EL121M350H032
381EL121M350J022
381EL151M350H042
381EL151M350J022
381EL151M350K012
381EL181M350H452
381EL181M350J032
381EL181M350K022
381EL221M350J042
381EL271M350J052
Ripple Amps
@ 105 ºC
Nominal
Size
D x L
(mm)
25 x 40
30 x 30
25 x 45
30 x 35
35 x 30
25 x 50
30 x 40
35 x 30
30 x 45
35 x 35
30 x 50
35 x 40
35 x 45
35 x 50
Cap.
(µF)
100
100
120
120
120
150
150
150
180
180
180
220
220
220
Catalog
Part Number
381EL101M400H032
381EL101M400J022
381EL121M400H042
381EL121M400J032
381EL121M400K012
381EL151M400H052
381EL151M400J042
381EL151M400K022
381EL181M400J452
381EL181M400K032
381EL221M400J052
ESR Max
@ 25º C
Ripple Amps
@ 105 ºC
Nominal
Size
D x L
(mm)
22 x 35
25 x 30
22 x 40
25 x 35
30 x 25
22 x 50
25 x 40
30 x 30
25 x 45
30 x 35
35 x 25
25 x 50
30 x 40
35 x 30
30 x 45
35 x 35
30 x 50
35 x 40
35 x 45
35 x 50
22 x 25
22 x 30
22 x 35
25 x 25
22 x 40
25 x 30
22 x 45
25 x 35
30 x 25
22 x 50
25 x 40
30 x 30
25 x 45
30 x 30
25 x 50
30 x 40
35 x 30
30 x 45
35 x 35
30 x 50
35 x 40
35 x 45
35 x 50
120 Hz 20 kHz 120 Hz 20 kHz
DF Max
(Ω)
(A)
(A)
120 Hz (Ω)
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.12
0.12
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.74
0.74
0.60
0.60
0.60
0.49
0.49
0.49
0.45
0.45
0.38
0.38
0.32
0.26
1.80
1.47
1.47
1.23
1.23
0.98
0.98
0.98
0.82
0.82
0.82
0.74
0.74
0.74
0.60
0.60
0.60
0.49
0.49
0.45
0.45
0.38
0.32
2.63
2.17
2.17
1.80
1.80
0.37
0.37
0.30
0.30
0.30
0.25
0.25
0.25
0.23
0.23
0.19
0.19
0.16
0.14
0.90
0.74
0.74
0.61
0.61
0.49
0.49
0.49
1.00
1.00
1.10
1.10
1.10
1.20
1.20
1.20
1.30
1.30
1.40
1.40
1.50
1.70
0.64
0.69
0.69
0.75
0.75
0.82
0.82
0.82
1.40
1.40
1.54
1.54
1.54
1.68
1.68
1.68
1.82
1.82
1.96
1.96
2.10
2.38
120 Hz 20 kHz 120 Hz 20 kHz
DF Max
(Ω)
(A)
(A)
120 Hz (Ω)
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1.47
1.47
1.23
1.23
1.23
0.98
0.98
0.98
0.82
0.82
0.82
0.67
0.67
0.67
0.52
0.52
0.43
0.43
0.43
0.34
0.34
0.34
0.29
0.29
0.29
0.23
0.23
0.23
0.19
0.19
0.18
0.18
0.15
0.13
1.32
1.10
0.92
0.92
0.76
0.76
0.63
0.63
0.63
0.52
0.52
0.52
0.43
0.43
0.34
0.34
0.34
0.29
0.29
0.23
0.23
0.19
0.16
0.69
0.69
0.75
0.75
0.75
0.82
0.82
0.82
0.90
0.90
0.90
1.00
1.00
1.00
1.10
1.10
1.20
1.20
1.30
1.40
0.37
0.40
0.47
0.47
0.53
0.53
0.56
0.56
0.56
0.64
0.64
0.64
0.72
0.72
0.79
0.79
0.79
0.87
0.87
1.00
1.00
1.19
1.38
0.97
0.97
1.05
1.05
1.05
1.15
1.15
1.15
1.26
1.26
1.26
1.40
1.40
1.40
1.54
1.54
1.68
1.68
1.82
1.96
0.52
0.56
0.66
0.66
0.74
0.74
0.78
0.78
0.78
0.90
0.90
0.90
1.01
1.01
1.11
1.11
1.11
1.22
1.22
1.40
1.40
1.67
1.93
350 Vdc (400 Vdc Surge)
O
1.15
1.15
1.15
22 x 40
25 x 30
30 x 25
0.41
0.90
1.26
22 x 45
0.41
0.41
0.37
0.37
0.37
0.30
0.30
0.30
0.25
0.25
0.23
0.23
0.19
0.16
0.92
0.76
0.76
0.63
0.63
0.90
0.90
1.00
1.00
1.00
1.10
1.10
1.10
1.20
1.20
1.30
1.30
1.40
1.50
0.51
0.56
0.56
0.64
0.64
1.26
1.26
1.40
1.40
1.40
1.54
1.54
1.54
1.68
1.68
1.82
1.82
1.96
2.10
0.71
0.78
0.78
0.90
0.90
25 x 35
30 x 30
22 x 50
25 x 40
30 x 30
25 x 50
30 x 35
35 x 30
30 x 45
35 x 35
30 x 50
35 x 40
35 x 40
35 x 50
22 x 25
22 x 30
25 x 25
22 x 35
25 x 25
BS
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.12
0.12
0.12
0.12
0.1
0.1
0.1
0.1
0.1
400 Vdc (450 Vdc Surge)
381EL221M350H052
381EL221M350K022
381EL271M350K032
381EL331M350K452
381EL391M350K052
O
381EL271M350A022
381EL331M350A032
381EL391M350A042
381EL471M350A042
381EL561M350A052
381EL560M400H012
381EL680M400H022
381EL680M400J012
381EL820M400H032
381EL820M400J012
CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800
LE
T
381EL221M400K042
381EL221M400A022
381EL271M400K452
270
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.55
0.55
0.45
0.45
0.38
0.31
3.78
3.14
2.63
2.63
2.17
2.17
1.80
1.80
1.80
1.47
1.47
1.47
1.23
1.23
0.98
0.98
0.98
0.82
0.82
0.67
0.67
0.55
0.45
0.90
22 x 25
22 x 30
25 x 25
22 x 35
25 x 30
270
330
330
390
470
39
47
56
56
68
68
82
82
82
100
100
100
120
120
150
150
150
180
180
220
220
270
330
381EL271M400A032
381EL331M400K052
381EL331M400A042
381EL391M400A452
381EL471M400A052
0.97
0.97
1.05
1.05
381EL390M450H012
381EL470M450H022
381EL560M450H032
381EL560M450J012
381EL680M450H042
381EL680M450J022
381EL820M450H452
381EL820M450J032
381EL820M450K012
381EL101M450H052
381EL101M450J042
381EL101M450K022
381EL121M450J452
381EL121M450K022
381EL151M450J052
381EL151M450K042
381EL151M450A022
381EL181M450K452
381EL181M450A032
381EL221M450K052
381EL221M450A042
381EL271M450A452
381EL331M450A052
381EL181M400A022
E
450 Vdc (500 Vdc Surge)
Type 381EL 105 ºC Ultra-Long Life Snap-In, Aluminum
More than 100,000 Hours Operation at 65 °C and Rated 105 °C Ripple
Typical Performance Curves
O
CDM Cornell Dubilier • 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800
BS
O
LE
T
E
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嵌入式系统
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