®
UNI-PAC™ 2.8
Low Cost, Low Profile 2.8mm
Power Inductors (Surface Mount)
Description
• Miniature size and rugged construction
• Low DCR and high efficiency
• Suited for IR and vapor reflow solder
• Designed for high shock environments
• Frequency range 1kHz to 2MHz
• RoHS compliant (-R option)
Applications
• DC-DC converters
• Filter inductors
• Signal conditioning
• Energy storage applications
• Computer, pager and battery powered equipment
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating ambient temperature range: -40°C to +85°C
range is application specific. Temperature rise is
approximately 40°C at rated RMS current. Maximum
operating temperature is 125°C including ambient.
• Infrared reflow temperature: +240°C for 30 seconds max.
Part
Number
UP2.8B-1R0
UP2.8B-1R5
UP2.8B-2R2
UP2.8B-3R3
UP2.8B-4R7
UP2.8B-6R8
UP2.8B-100
UP2.8B-150
UP2.8B-220
UP2.8B-330
UP2.8B-470
UP2.8B-680
UP2.8B-101
UP2.8B-151
Inductance
µH
(Rated)
1.0
1.5
2.2
3.3
4.7
6.8
10
15
22
33
47
68
100
150
OCL (1)
µH ± 20%
0.98
1.59
2.44
3.24
4.15
6.73
10
15
22
33
47
68
100
150
Packaging
• Supplied in tape and reel packaging, 1,750 per reel
Irms (2)
Amperes
3.6
3.3
3.1
2.8
2.7
2.4
2.1
1.7
1.5
1.3
1.0
.89
.78
.62
Isat (3)
Amperes
8.0
6.4
5.2
4.5
3.9
3.2
2.7
2.2
1.7
1.5
1.2
1.0
.84
.74
DCR (4)
Ohms
(Max.)
.0286
.0349
.0356
.0474
.0478
.067
.080
.120
.190
.250
.340
.480
.622
.971
1) Open Circuit Inductance Test Parameters: 100kHz, 0.250 Vrms, 0.0 Adc
2) RMS current, delta temp. of 40° C ambient temperature of 85° C
3) Peak current for approximately 10% roll-off @ 20°C
4) Values @ 20° C
Option Code
-R
OPTION CODE
Description
RoHS compliant version
Mechanical Diagrams
TOP VIEW
Recommended PCB Layout
2.92
2.63
max
FRONT VIEW
9.4
max
12.9
max
2.8
max
7.37
UP2.8B
xxx
wwllyy R
9.4
max
Dimensions in Millimeters.
wwllyy = date code R = (revision level)
xxx = Inductance value per family chart
2.79
Component View
®
UNI-PAC™ 2.8
Low Cost, Low Profile 2.8mm
Power Inductors (Surface Mount)
Packaging Information
1.5 dia
+0.1/-0.0
2.0
4.0
1.5 dia
min
A
1.7
1
11.5
Bo
24.0
+/-0.3
2
Ko
A
Ao
Ao=9.7mm
Bo=13.4mm
Ko=3.1mm
12.0
User direction of feed
Packaging Information:
Parts packaged on a
13" Dia. EIA-481 compliant reel.
1,750 parts per reel.
SECTION A-A
Inductance vs Saturation Current
120
% of Initial Inductance
100
80
60
40
20
0
0
40
80
% of Isat
120
160
PM-4106 7/05
© Cooper Electronic
Technologies 2005
Visit us on the Web at www.cooperET.com
3601 Quantum Boulevard Boynton Beach, Florida 33426-8638
Tel: +1-561-752-5000 Toll Free: +1-888-414-2645 Fax: +1-561-742-1178
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Electronic
Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper
Electronic Technologies also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been
selected, it should be tested by the user in all possible applications.
Life Support Policy: Cooper Electronic Technologies does not authorize the use of any of its products for use in life support devices or systems without the
express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when
properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.
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