Temperature
(°C)
25
75
125
175
225
275
0 50 100 150 200 250 300
Time (seconds)
120 - 150 seconds
60 - 90
seconds
260°C peak
190°C
150°C
220°C
Ramp Down
6°C/second
maximum
<1> 255°C
<1> Maximum of 10 seconds between
+255°C and +260°C
Ramp Up
3°C/second maximum
10 seconds minimum
Rev. 02/22/05
5.30
(.209)
2.00
(.079)
REF.
1.50
(.059)
REF.
2.00
(.079)
REF.
1.80
(.071)
REF.
REF.
R
6R8
4.80 ± 0.20
(.189 ± .008)
4.80 ± 0.20
(.189 ± .008)
1.60
(.063)
TYP.
1.60
(.063)
TYP.
1.60
(.063)
TYP.
2.80 ± 0.20
(.110 ± .008)
Features
■ Formerly model
■ Height of 3.0 mm max.
■ Current rating up to 3.1 A
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
PM428S Series - Shielded SMD Power Inductor
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
General Specifi cations
Test Voltage .................... 0.1 V, 100 KHz
Refl ow Soldering ....230 ˚C; 50 sec max.
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +125 °C
Resistance to Soldering Heat
............................... 260 °C for 10 sec.
Materials
Core Material ................................Ferrite
Wire ...........................Enameled Copper
Adhesive ............................. Epoxy Resin
Terminal ....................................Ag/Ni/Sn
Rated Current .......Ind. drop of 35 % typ.
at Isat
Temperature Rise ....... 30 ˚C typ. at Irms
Packaging .................. 2000 pcs. per reel
DIMENSIONS:
MM
(INCHES)
Product Dimensions
Electrical Specifi cations
Recommended Layout
Inductance 100 kHz Test SRF DCR
Q Frequency Typ. Max.
Irms Isat
Bourns Part No. (µH) Tol. % Ref. (MHz) (MHz) (mΩ) (A) (A)
PM428S-1R2-RC 1.2 ±30 9.34 7.96 176 20 3.10 2.56
PM428S-1R8-RC 1.8 ±30 9.18 7.96 146 25 2.70 2.20
PM428S-2R2-RC 2.2 ±30 9.24 7.96 111 28 2.50 2.05
PM428S-2R7-RC 2.7 ±30 8.64 7.96 92 30 2.35 1.80
PM428S-3R3-RC 3.3 ±30 7.72 7.96 76 35 2.15 1.65
PM428S-3R9-RC 3.9 ±30 8.58 7.96 56 60 1.72 1.50
PM428S-4R7-RC 4.7 ±30 8.12 7.96 55 70 1.55 1.30
PM428S-5R6-RC 5.6 ±30 9.56 7.96 69 85 1.38 1.20
PM428S-6R8-RC 6.8 ±30 9.624 7.96 77 90 1.30 1.15
PM428S-8R2-RC 8.2 ±30 8.24 7.96 45 100 1.25 1.05
PM428S-100-RC 10 ±30 11.26 2.52 34 110 1.19 1.00
PM428S-120-RC 12 ±30 11.26 2.52 25 125 1.12 0.85
PM428S-150-RC 15 ±30 9.66 2.52 27 150 1.03 0.78
PM428S-180-RC 18 ±30 11.64 2.52 25 160 0.98 0.75
PM428S-220-RC 22 ±30 8.26 2.52 23 185 0.93 0.72
PM428S-270-RC 27 ±30 10.76 2.52 18 200 0.89 0.60
PM428S-330-RC 33 ±30 9.7 2.52 16 230 0.82 0.58
PM428S-390-RC 39 ±30 9.74 2.52 14 250 0.80 0.50
PM428S-470-RC 47 ±30 10.88 2.52 13 280 0.75 0.48
PM428S-560-RC 56 ±30 9 2.52 13 320 0.70 0.41
PM428S-680-RC 68 ±30 8.42 2.52 11 400 0.63 0.36
PM428S-820-RC 82 ±30 8.6 2.52 8 520 0.56 0.32
PM428S-101-RC 100 ±30 8.78 0.796 9 600 0.51 0.30
PM428S-121-RC 120 ±30 13.32 0.796 8 700 0.47 0.28
PM428S-151-RC 150 ±30 11.72 0.796 6 860 0.42 0.26
PM428S-181-RC 180 ±30 13.86 0.796 7 1000 0.39 0.23
Soldering Profi le
