Features
nꢀ Shieldedꢀconstruction
nꢀ Metalꢀalloyꢀpowderꢀcore
nꢀ Highꢀsaturationꢀcurrent
nꢀ Lowꢀbuzzꢀnoise
220
1906H
nꢀ Inductanceꢀrange:ꢀ0.47ꢀtoꢀ47ꢀµH
nꢀ RoHSꢀcompliant*ꢀandꢀhalogenꢀfree**
SRP1770C Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Operating Temperature
................................-40 °C to +125 °C
Inductance
@ 100 kHz
/ 1 V
Tol. @100 kHz (MHz) (mW)
L (µH) (%)
Irms
(A)
Typ.
Isat
(A)
Typ.
Q (Min.)
SRF
DCR
DCR
(mW)
Max.
(Temperature rise included)
Storage Temperature (Component)
................................-40 °C to +125 °C
Rated Current
............ Inductance drops 30 % at Isat
Temperature Rise.....40 °C at rated Irms
Moisture Sensitivity Level.....................1
ESD Classification (HBM).................N/A
Bourns
Part Number
Terminal
Type
/ 1 V
10
20
20
20
20
20
20
20
20
20
20
20
20
20
Typ.
28
24
22
21
19
17
15
14
13
12
10
8
Typ.
0.75
1.30
1.80
2.50
3.50
4.80
5.90
8.40
SRP1770C-R47M
SRP1770C-1R0M
SRP1770C-1R5M
SRP1770C-2R2M
SRP1770C-3R3M
SRP1770C-4R7M
SRP1770C-5R6M
SRP1770C-6R8M
SRP1770C-8R2M
SRP1770C-100M
SRP1770C-150M
SRP1770C-220M
SRP1770C-330M
SRP1770C-470M
0.47 ± 20
0.83
1.50
2.10
2.80
3.90
5.50
6.80
9.20
60.0
48.0
42.0
40.0
28.0
26.0
24.0
22.0
115
68
55
45
40
37
35
30
28
25
23
19
15
13
1.0
1.5
2.2
3.3
4.7
5.6
6.8
8.2
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
1
Circuit design, component, PCB trace
Lead
Frame
size and thickness, airflow and other
cooling provisions all affect the part
temperature. Part temperature should be
verified in the end application.
9.60 10.80 18.0
11.60 13.00 17.0
16.50 19.50 14.0
24.00 27.60 12.0
36.00 42.00 10.7
10.0 ± 20
15.0 ± 20
22.0 ± 20
33.0 ± 20
47.0 ± 20
Materials
6
Core..........................Metal alloy powder
Wire ............................Enameled copper
Terminal Finish ..............................Sn/Ni
Packaging....... 200 pcs. per 13-inch reel
7
46.00 53.00
8.7
Soldering Profile
Product Dimensions
Preheating
Soldering
Natural Cooling
17.8 ꢀ.5ꢀ
(.7ꢀ1 .ꢀꢂꢀ2
T
(260 °C / 10 Sec. Max.)
P
t
(245 °C, 20~40 Sec.)
217 °C
16.9 ꢀ.ꢁꢀ
(.665 .ꢀ1ꢂ2
p
200 °C
150°C
60~150 Sec.
100
1907H
60~180
Sec.
16.9 ꢀ.ꢁꢀ
(.665 .ꢀ1ꢂ2
6.7 ꢀ.ꢁꢀ
(.ꢂ64 .ꢀ1ꢂ2
480 Sec. Max.
25
Time (Seconds)
Reflow Times: 3 Times Max.
ꢂ.ꢁ ꢀ.ꢁꢀ
(.ꢀ91 .ꢀ1ꢂ2
DIMENSIONS:
MM
(INCHES)
How to Order
Recommended Layout
18.5
(.728)
SRP1770C - 220M
Model
Value Code (see table)
12.5
(.492)
11.9 ꢀ.ꢁꢀ
(.469 .ꢀ1ꢂ2
ꢂ.5 ꢀ.ꢁꢀ
(.ꢀ98 .ꢀ1ꢂ2
11.0
(.433)
Schematic
MM
(INCHES)
DIMENSIONS:
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*ꢀꢀRoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
**Bournsꢀconsidersꢀaꢀproductꢀtoꢀbeꢀ“halogenꢀfree”ꢀifꢀ(a)ꢀtheꢀBromineꢀ(Br)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀ(b)ꢀtheꢀChlorineꢀꢀ
ꢀꢀꢀꢀ(Cl)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀandꢀ(c)ꢀtheꢀtotalꢀBromineꢀ(Br)ꢀandꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ1500ꢀppmꢀorꢀless.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.ꢀUsersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.ꢀ
Theꢀproductsꢀdescribedꢀhereinꢀandꢀthisꢀdocumentꢀareꢀsubjectꢀtoꢀspecificꢀdisclaimersꢀasꢀsetꢀforthꢀonꢀtheꢀlastꢀpageꢀofꢀthisꢀdocument,ꢀandꢀatꢀwww.bourns.com/legal/disclaimer.pdf.