Technical Data DS4308
Effective August 2017
Supersedes March 2007
UP
UNI-PAC™ drum core power inductors
Product features
•Maximum power density
•Ideal for applications requiring low inductance
and high current in a miniature package
•Current range from 0.47 A to 19.2 A
•Inductance range from 0.470 uH to 1000 uH
•Protective case eliminates core breakage
•Meets UL 94V-0 flammability standard
•Ferrite core material
Applications
•Buck or boost inductor
•Workstations/servers
•Desktop computer
•DVD Players
•Portable power devices
•Base stations
•Industrial power supplies
•Output filter chokes
•Test equipment instrumentation
Environmental Data
•Storage temperature range (Component):
-40 °C to +125 °C
•Operating temperature range: -40 °C to +125 °C
(ambient plus self-temperature rise)
•Solder reflow temperature:
J-STD-020 (latest revision) compliant
2
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Technical Data DS4308
Effective August 2017
Product Specifications
UP
UNI-PAC™ drum core power inductors
Part Inductance OCL
(1)
I
R MS
(2)
I
S AT
(3)
DCR
(4)
Number µH (rated) µH±20%
(A) (A)
Ohms max.
UP1B-R47-R 0.47 0.569 6.0 7.7 0.0097
UP1B-1R0-R 1.0 1.20 4.4 5.3 0.0177
UP1B-1R5-R 1.5 1.61 4.2 4.5 0.0200
UP1B-2R2-R 2.2 2.62 3.1 3.5 0.0363
UP1B-3R3-R 3.3 3.79 2.9 3.0 0.0428
UP1B-4R7-R 4.7 5.15 2.2 2.6 0.0544
UP1B-6R8-R 6.8 6.87 1.7 2.2 0.0897
UP1B-100-R 10.0 11.00 1.5 1.9 0.1107
UP1B-150-R 15.0 16.00 1.2 1.5 0.1747
UP1B-220-R 22.0 23.50 1.0 1.2 0.2541
UP1B-330-R 33.0 36.00 0.82 0.99 0.3670
UP1B-470-R 47.0 48.50 0.72 0.87 0.4740
UP1B-680-R 68.0 73.52 0.58 0.67 0.7320
UP1B-101-R 100.0 112.67 0.47 0.53 1.11
UP1B-151-R 150.0 152.40 0.40 0.46 1.61
UP1B-221-R 220.0 223.10 0.36 0.38 1.96
UP1B-331-R 330.0 331.90 0.28 0.31 3.10
UP2B-R47-R 0.47 0.595 10.6 11.4 0.0049
UP2B-1R0-R 1.0 1.00 9.3 9.9 0.0065
UP2B-1R5-R 1.5 1.46 8.3 7.9 0.0081
UP2B-2R2-R 2.2 2.56 7.2 6.1 0.0107
UP2B-3R3-R 3.3 3.23 6.5 5.1 0.0128
UP2B-4R7-R 4.7 4.77 5.5 4.2 0.0165
UP2B-6R8-R 6.8 6.63 5.0 3.6 0.0202
UP2B-100-R 10.0 9.73 4.3 3.3 0.0267
UP2B-150-R 15.0 15.43 3.5 2.4 0.0410
UP2B-220-R 22.0 22.50 2.8 2.0 0.0617
UP2B-330-R 33.0 33.13 2.1 1.7 0.0917
UP2B-470-R 47.0 48.65 1.7 1.4 0.1388
UP2B-680-R 68.0 68.17 1.5 1.2 0.1787
UP2B-820-R 82.0 84.1 1.34 1.03 0.2235
UP2B-101-R 100.0 102.60 1.2 0.95 0.2707
UP2B-151-R 150.0 150 1.0 0.77 0.4100
UP2B-221-R 220.0 223 0.773 0.637 0.6717
UP2B-331-R 330.0 338 0.676 0.510 0.8783
UP2B-471-R 470.0 471 0.553 0.427 1.31
UP2B-681-R 680.0 700 0.452 0.355 1.97
UP2B-821-R 820.0 823 0.423 0.334 2.24
UP2B-102-R 1000.0 1005 0.369 0.300 2.96
UP3B-R47-R 0.47 0.452 16.0 25.1 0.0021
UP3B-1R0-R 1.0 1.34 12.5 15.3 0.0034
UP3B-1R5-R 1.5 2.08 10.0 12.0 0.0053
UP3B-2R2-R 2.2 3.01 9.2 10.2 0.0074
UP3B-3R3-R 3.3 3.96 8.0 9.3 0.0083
UP3B-4R7-R 4.7 5.00 6.5 7.7 0.0114
UP3B-6R8-R 6.8 7.70 5.8 6.2 0.0183
UP3B-100-R 10.0 11.00 4.3 5.2 0.0260
UP3B-150-R 15.0 16.38 3.9 4.3 0.0317
UP3B-220-R 22.0 23.93 3.1 3.7 0.0490
UP3B-330-R 33.0 33.85 2.4 3.0 0.0688
UP3B-470-R 47.0 51.00 1.9 2.4 0.1082
UP3B-680-R 68.0 69.50 1.6 2.0 0.1558
UP3B-101-R 100.0 101.40 1.4 1.8 0.2053
UP3B-151-R 150.0 152.9 1.2 1.4 0.2960
UP3B-331-R 330.0 332.80 0.75 0.98 0.7330
UP4B-R47-R 0.47 0.473 19.2 51.7 0.0019
UP4B-1R0-R 1.0 0.916 17.3 37.3 0.0023
UP4B-1R5-R 1.5 1.52 13.4 28.9 0.0039
UP4B-2R2-R 2.2 2.27 12.0 23.7 0.0048
UP4B-3R3-R 3.3 3.14 11.0 20.2 0.0057
UP4B-4R7-R 4.7 5.34 8.6 15.6 0.0093
UP4B-6R8-R 6.8 6.66 8.3 14.1 0.0100
UP4B-100-R 10.0 9.77 6.8 11.5 0.0150
UP4B-150-R 15.0 15.61 5.5 9.1 0.0230
UP4B-220-R 22.0 22.61 4.5 7.6 0.0340
UP4B-330-R 33.0 34.30 3.7 6.1 0.0520
UP4B-470-R 47.0 48.10 3.1 5.2 0.0740
UP4B-680-R 68.0 69.14 2.4 4.3 0.1200
UP4B-101-R 100.0 99.42 2.0 3.6 0.1700
UP4B-151-R 150.0 146.90 1.7 3.0 0.2392
UP4B-221-R 220.0 221.40 1.4 2.4 0.3571
UP4B-331-R 330.0 330.00 1.1 2.0 0.5800
UP4B-471-R 470.0 470.10 0.91 1.7 0.8330
Notes: (1) Open Circuit Inductance Test Parameters: 100 kHz, .250 Vrms, 0.0 Adc.
(2) RMS current for an approximate ∆T of 40 °C. at an ambient temperature
of +85 ˚C.
(3) Peak current for approximately 30% rolloff UP1B, 3B, 4B. 10% rolloff UP2B @
+20 °C
(4) DCR limits +20 °C.
3
Technical Data DS4308
Effective August 2017
www.eaton.com/electronics
UP
UNI-PAC™ drum core power inductors
Dimensions- mm
TOP VIEW
6.10
Max
8.89
Max
2.42
Ref
4.04
Max
0.762
Min
UP1B
XXX
wwllyy R
FRONT VIEW
5.0
Max
COMPONENT VIEW
PCB PAD LAYOUT
1.9
4.1
8.89
5.08 SCHEMATIC
1
2
UP2B
TOP VIEW
10.41
Max
13.97
Max
4.22
Ref 6.73
Max
0.762
Min
UP2B
XXX
wwllyy R
FRONT VIEW
6.0
Max
14.0
COMPONENT VIEW
PCB PAD LAYOUT
9.4
7.3
2.3
SCHEMATIC
1
2
UP3B
TOP VIEW
12.70
19.30
max
13.21
2max
1
8.13
max
UP3B
XXX
wwllyy R
6.8
max
SIDE VIEW
19.3
COMPONENT VIEW
PCB PAD LAYOUT
11.7
8.7
3.8
SCHEMATIC
1
2
UP4B
22.10
max
TOP VIEW
15.00
max
14.61
12
11.18
max
UP4B
XXX
wwllyy R
SIDE VIEW
787
max
22.1
COMPONENT VIEW
PCB PAD LAYOUT
13.5
12.0
4.3
SCHEMATIC
1
2
Do not route traces or vias underneath inductor wwllyy = (date code) R = revision level
xxx = Inductance value per family chart
UP1B
4
www.eaton.com/electronics
Technical Data DS4308
Effective August2017
Packaging information- mm
UP
UNI-PAC™ drum core power inductors
14.3
10.7
5.1
1.5 Dia.
16.0
6.8
5.4
SECTION A-A
A
A
1.75
24
11.5
2.0
4.0
Direction of feed
Dimensions in millimeters.
1
2
UP2B
ACTUAL SIZE
UNI-PAC 2B
13.5
5.8
4.0
2.0
16.0
1.75
14.2
1
2
1.5 Dia.
7.7
SECTION A-A
A
A
28.4
Direction of feed
Dimensions in millimeters.
19.6
5.9
32
UP3B
15.3
11.1
4.0
2.0
24.0
1.75
14.2
1.5 Dia.
9.0
SECTION A-A
A
A
28.4
Direction of feed
Dimensions in millimeters.
22.3
7.2
32
1
2
UP4B
ACTUAL SIZE
UNI-PAC 3B
ACTUAL SIZE
UNI-PAC4B
6.4
2.3
4.0
2.0
12.0
1.75
16
7.5
1.5 Dia.
5.6
4.4
SECTION A-A
9.3
A
A
Direction of feed
Dimensions in millimeters.
1
2
UP1B
ACTUAL SIZE
UNI-PAC 1B
Parts packaged on 13" Diameter reel,
900 parts per reel.
Parts packaged on 13" Diameter reel,
550 parts per reel.
Parts packaged on 13" Diameter reel,
450 parts per reel.
Parts packaged on 13" Diameter reel,
275 parts per reel.
Technical Data DS4308
Effective August 2017
UP
UNI-PAC™ drum core power inductors
5
www.eaton.com/electronics
Inductance characteristics
UP1B-470
Typical Inductance & Energy vs Saturation Current
UP1B-100
Typical Inductance & Energy vs Saturation Current
UP1B-1R0
Typical Inductance & Energy vs Saturation Current
UP2B-470
Typical Inductance & Energy vs Saturation Current
UP2B-100
Typical Inductance & Energy vs Saturation Current
UP2B-1R0
Typical Inductance & Energy vs Saturation Current
Technical Data DS4308
Effective August 2017
UP
UNI-PAC™ drum core power inductors
6www.eaton.com/electronics
UP3B-470
Typical Inductance & Energy vs Saturation Current
UP3B-100
Typical Inductance & Energy vs Saturation Current
UP3B-1R0
Typical Inductance & Energy vs Saturation Current
UP4B-100
Typical Inductance & Energy vs Saturation Current
UP4B-470
Typical Inductance & Energy vs Saturation Current
UP4B-1R0
Typical Inductance & Energy vs Saturation Current
Inductance characteristics
Life Support Policy: Eaton 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.
Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also
reserves the right to change or update, without notice, any technical information contained in this bulletin.
Eaton
Electronics Division
1000 Eaton Boulevard
Cleveland, OH 44122
United States
www.eaton.com/electronics
© 2017 Eaton
All Rights Reserved
Printed in USA
Publication No. DS4308
August 2017
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
Solder Reflow Profile
Temperature
t
tP
ts
TC -5°C
Time 25°C to Peak Time
25°C
Tsmin
Tsmax
TL
TP
Preheat
A
Max. Ramp Up Rate = 3°C/s
Max. Ramp Down Rate = 6°C/s
T
Ta
ab
bl
le
e
1
1
-
-
S
St
ta
an
nd
da
ar
rd
d
S
Sn
nP
Pb
b
S
So
ol
ld
de
er
r
(
(T
Tc
c)
)
VolumeVolume
Package mm3mm3
Thickness <350 _
>350
<2.5mm 235°C220°C
_
>2.5mm 220°C220°C
T
Ta
ab
bl
le
e
2
2
-
-
L
Le
ea
ad
d
(
(P
Pb
b)
)
F
Fr
re
ee
e
S
So
ol
ld
de
er
r
(
(T
Tc
c)
)
Volume Volume Volume
Package mm3mm3mm3
Thickness <350 350 - 2000 >2000
<1.6mm 260°C260°C260°C
1.6 – 2.5mm 260°C250°C245°C
>2.5mm 250°C245°C245°C
Reference JDEC J-STD-020
Standard SnPb Solder Lead (Pb) Free SolderProfile Feature
Preheat and Soak•eTmperature min. (Tsmin) 100°C150°C
• Temperature max. (Tsmax) 150°C200°C
• Time (Tsmin to Tsmax) (ts)60-120 Seconds60-120 Seconds
3°C/ Second Max. 3°C/ Second Max.
183°C217°C
60-150 Seconds60-150 Seconds
Table 1 able 2T
20 Seconds** 30 Seconds**
6°C/ Second Max. 6°C/ Second Max.
Average ramp up rate Tsmaxto Tp
Liquidous temperature (T
L
)
Time at liquidous (tL)
Peak package body temperature (TP)*
Time (tp)** within 5 °C of the specified classification temperature (Tc)
Average ramp-down rate (Tpto Tsmax)
Time 25°C to Peak Temperature Minutes Max.68 Minutes Max.
*Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum.
** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum.
Technical Data DS4308
Effective August 2017
UP
UNI-PAC™ drum core power inductors
