UNSHIELDED DRUM CORE (UP2C) UNI-PAC™ 2C
UNI-PAC™ 2C
Low Cost Power Inductors
(Surface Mount)
Description
RoHS
2002/95/EC
• Miniature surface mount design with rugged
case to eliminate core breakage
• Inductance range from 0.470uH to 1000uH
• Current range up to 18.6 Amps peak
• Meets UL94V-0 flammability standard
• Ferrite core material
Applications
• PDA, computer, and flash memory programs
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating ambient temperature range: -40°C to +85°C
(range is application specific)
• Solder reflow temperature: +260°C max. for 10 seconds
max.
Part
Number
UP2C-R47-R
UP2C-1R0-R
UP2C-1R5-R
UP2C-2R2-R
UP2C-3R3-R
UP2C-4R7-R
UP2C-6R8-R
UP2C-100-R
UP2C-150-R
UP2C-220-R
UP2C-330-R
UP2C-470-R
UP2C-680-R
UP2C-101-R
UP2C-151-R
UP2C-221-R
UP2C-331-R
UP2C-471-R
UP2C-681-R
UP2C-102-R
Inductance
μH
(rated)
0.470
1.0
1.5
2.2
3.3
4.7
6.8
10.0
15.0
22.0
33.0
47.0
68.0
100.0
150.0
220.0
330.0
470.0
680.0
1000.0
OCL
(1)
μH±20%
0.48
1.03
1.45
2.00
3.30
4.41
7.16
10.56
15.97
22.33
32.11
47.90
65.03
97.85
141.9
207.8
318.2
470.8
689.7
1080.0
I
RMS
(2)
Amperes
12.2
9.80
8.10
7.50
5.90
5.62
4.42
3.61
3.17
2.61
2.16
1.77
1.57
1.26
1.04
0.82
0.67
0.56
0.46
0.38
Packaging
• Supplied in tape and reel packaging, 900 per reel
I
SAT
(3)
Amperes
18.6
11.8
10.0
8.67
6.84
6.20
4.82
3.94
3.17
2.65
2.20
1.83
1.53
1.24
1.02
0.85
0.70
0.58
0.48
0.40
DCR
(4)
mΩ
typ.
2.5
3.9
5.6
6.6
10.5
11.7
18.0
28.3
36.9
54.0
79.7
118.5
151.7
233.1
351.4
545.0
824.3
1191.4
1774.2
2657.1
Volts
(5)
μS
(typ)
4.15
7.0
8.3
9.6
12.1
13.4
17.3
21.1
26.2
31.3
37.7
45.4
54.3
67.1
81.2
97.8
120
144
173
209
Notes:
(1) Open Circuit Inductance Test Parameters: 100KHz, .250Vrms, 0.0Adc.
(2) RMS current for an approximate
ΔT
of 40°C without core loss, at an
ambient temperature of 85˚C.
(3) Peak current for approximately 30% rolloff @ 20°C.
(4) DCR limits 20°C.
(5) Applied volt-time product (V-uS) across the inductor. This value repre-
sents the applied v-us at 300KHz necessary to generate a core loss
equal to 10% of the total losses for a 40° temperature rise.
Mechanical Diagrams
TOP VIEW
12.90
Max.
FRONT VIEW
5.2
PCB PAD LAYOUT
7.37
SCHEMATIC
1
SIDE VIEW
UP2C
xxx
wwllyy R
3.0ref
9.40
Max.
2
2.79
2.92
1
2.5max*
see note A
COMPONENT VIEW
2
Dimensions in Millimeters.
wwllyy = (date code) R = revision level
xxx = Inductance value per family chart
(A) 2.5mm max is width of copper at seating plane. The width above the seating
plane may exceed 2.5mm.
PM-135
UNSHIELDED DRUM CORE (UP2C) UNI-PAC™ 2C
UNI-PAC™ 2C
Low Cost Power Inductors
(Surface Mount)
Packaging Information
4.0
1.5 dia
+0.1/-0.0
2.0
1.5 dia
min
A
1.7
1
11.5
24.0
+/-0.3
B0
ACTUAL SIZE
UNIPAC 2C
2
Ao=9.50mm
Bo=13.0mm
Ko=5.7mm
K0
SECTION A-A
A0
12.0
User direction of feed
A
Inductance Characteristics
Core Loss
I
RMS
DERATING WITH CORE LOSS
0
% of Losses from Irms (maximum)
20
40
50
60
70
80
KH
z
z
Hz
20
0K
90
92
94
95
96
97
98
99
10
20
30
40
50
60
80
100
200
300
400 500 600
800 1000
% of Applied Volt-μ-Seconds
PM-136
10
0K
Hz
50
0K
H
1M
Hz
30
0
