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
•Ferrite core material
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.
• Solder reflow temperature: +260°C max. for 10 seconds
max.
Packaging
• Supplied in tape and reel packaging, 1,750 per reel
Part Inductance OCL (1) Irms (2) Isat (3) DCR (4)
Number µH µH ± 20% Amperes Amperes Ohms
(Rated) (Max.)
UP2.8B-1R0-R 1.0 0.98 3.6 8.0 .0286
UP2.8B-1R5-R 1.5 1.59 3.3 6.4 .0349
UP2.8B-2R2-R 2.2 2.44 3.1 5.2 .0356
UP2.8B-3R3-R 3.3 3.24 2.8 4.5 .0474
UP2.8B-4R7-R 4.7 4.15 2.7 3.9 .0478
UP2.8B-6R8-R 6.8 6.73 2.4 3.2 .067
UP2.8B-100-R 10 10 2.1 2.7 .080
UP2.8B-150-R 15 15 1.7 2.2 .120
UP2.8B-220-R 22 22 1.5 1.7 .190
UP2.8B-330-R 33 33 1.3 1.5 .250
UP2.8B-470-R 47 47 1.0 1.2 .340
UP2.8B-680-R 68 68 .89 1.0 .480
UP2.8B-101-R 100 100 .78 .84 .622
UP2.8B-151-R 150 150 .62 .74 .971
UNI-PAC™ 2.8
Low Cost, Low Profile 2.8mm
Power Inductors (Surface Mount)
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
Mechanical Diagrams
9.4
max
2.63
max 9.4
max
UP2.8B
xxx
wwllyy R
TOP VIEW
FRONT VIEW
12.9
max
2.8
max
7.37
2.79
2.92
Component View
Recommended PCB Layout
Dimensions in Millimeters.
wwllyy = date code R = (revision level)
xxx = Inductance value per family chart
RoHS
2002/95/EC
13" Dia. EIA-481 compliant reel.
Packaging Information:
Parts packaged on a
1,750 parts per reel.
1
2
A
A
Ao=9.7mm
Bo=13.4mm
Ko=3.1mm
SECTION A-A
Ko
Ao
1.5 dia
+0.1/-0.0 1.5 dia
min
4.0
2.0
12.0
1.7
11.5
24.0
+/-0.3
User direction of feed
Bo
Packaging Information
0
20
40
60
80
100
120
0 40 80 120 160
%of Isat
% of Initial Inductance
Inductance Characteristics
UNI-PAC™ 2.8
Low Cost, Low Profile 2.8mm
Power Inductors (Surface Mount)
Visit us on the Web at www.cooperbussmann.com
1225 Broken Sound Pkwy. Suite F Boca Raton, FL 33487
Tel: +1-561-998-4100 Toll Free: +1-888-414-2645 Fax: +1-561-241-6640
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.
PM-4106 3/07
© Cooper Electronic
Technologies 2007
