SMT Power Inductors
Power Beads - PA3784.XXXHL Series
Current Rating: Over 94 Apk
Inductance Range: 120nH to 180nH
Height: 8.0 mm Max
Footprint: 10.0mm x 8.0mm Max
Halogen Free
Electrical Specifications @ 25°C — Operating Temperature - 40°C to +130°C
7
Part
Number
PA3784.121HL
PA3784.151HL
PA3784.181HL
Inductance
1
@ 0A
DC
(nH +/- 10%)
120
150
180
Inductance
2
@Irated
(nH TYP)
120
150
165
Irated
(ADC)
84
67
55
3
DCR
(mΩ nominal)
0.18 +/- 5%
4
Saturation Current
5
(A TYP)
25°C
94
83
67
100°C
84
67
55
Heating Current
6
(A TYP)
70
NOTES:
1. Inductance measured at 100kHz, 100mVrms.
2. Inductance at Irated is the value of the inductance at 25°C at the listed rated current.
3. The rated current as listed is either the saturation current (25°C or 100°C) or the heating current depending on
which value is lower.
4. The nominal DCR is measured from point a to point b , as shown below on the mechanical drawing.
5. The saturation current is the typical current which causes the inductance to drop by 20% at the stated ambient
temperatures (25°C, 100°C and 125°C). This current is determined by placing the component in the specified ambi-
ent environment and applying a short duration pulse current
(to eliminate self-heating effects) to the component.
6. The heating current is the DC current which causes the part temperature
to increase by approximately 40°C when used in a typical application.
7. In high volt*time applications, additional heating in the component can occur due to core losses in the inductor
which may neccessitate derating the current in order to limit the temperature rise of the component. To deter-
mine the approximate total losses (or temperature rise) for a given application, the coreloss and temperature
rise curves can be used.
8. Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part number (i.e. PA3784.121HL
becomes PA3784.121HLT).
Pulse complies to industry standard tape and reel specification EIA481. The tape and reel for this product has a
width (W=24mm), pitch (Po=16.0mm) and depth (Ko=8.2mm).
9. The temperature of the component (ambient plus temperature rise) must be within the stated operating tem-
perature range.
Mechanical
PA3784.XXXHL
1
2
Schematics
Weight
. . . . . . . . . . . . . . . . . . . . . . . . 2.75 grams
Tape & Reel
. . . . . . . . . . . . . . . . . . . . . .450/reel
Dimensions:
mm
Unless otherwise specified,
all tolerances are ± 0,25
1
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SMT Power Inductors
Power Beads - PA3784.XXXHL Series
PA3784.XXXHL CoreLoss (W)
1.1
1.0
0.9
0.8
CoreLoss (W)
700
KHz
600
KHz
500
KHz
400
KHz
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
200
400
600
800
1000
1200
1400
1600
300
KHz
200
KHz
1800
2000
B
where B = 0.36 * L(nH) * I
PA3784.XXXHL Temp Rise vs Power Dissipation
Temp Rise above Ambient (C)
50
40
30
20
10
0
0
0.2
0.4
Power (W)
0.6
0.8
1
Total Power Dissipation (W) = CopperLoss + CoreLoss
CopperLoss = Irms^2 * Rdc(mOhms) / 1000
CoreLoss = (from table)
For More Information
Pulse Worldwide
Headquarters
15255 Innovation Drive Ste 100
San Diego, CA 92128
U.S.A.
Pulse Europe
Pulse Electronics GmbH
Am Rottland 12
58540 Meinerzhagen
Germany
Pulse China Headquarters
Pulse Electronics (ShenZhen) CO., LTD
D708, Shenzhen Academy of
Aerospace Technology,
The 10th Keji South Road,
Nanshan District, Shenzhen, P.R.
China 518057
Tel: 86 755 33966678
Fax: 86 755 33966700
Pulse North China
Room 2704/2705
Super Ocean Finance Ctr.
2067 Yan An Road West
Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
Pulse South Asia
135 Joo Seng Road
#03-02
PM Industrial Bldg.
Singapore 368363
Pulse North Asia
1F, No.111
Xiyuan Road
Zhongli District
Taoyuan City 32057
Taiwan (R.O.C)
Tel: 886 3 4356768
Fax: 886 3 4356820
Tel: 858 674 8100
Fax: 858 674 8262
Tel: 49 2354 777 100
Fax: 49 2354 777 168
Tel: 65 6287 8998
Fax: 65 6280 0080
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may
be trademarks or registered trademarks of their respective owners. © Copyright, 2017. Pulse Electronics, Inc. All rights reserved.
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