Features
Applications
nꢀ Shieldedꢀconstruction
nꢀ Carbonylꢀpowderꢀcore
nꢀ Highꢀsaturationꢀcurrent
nꢀ Inductanceꢀrange:ꢀ1ꢀtoꢀ100ꢀµH
nꢀ AEC-Q200ꢀqualified
nꢀ Automotiveꢀsystems:ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
-ꢀꢀDriverꢀassistantꢀ
-ꢀꢀInformationꢀ
-ꢀꢀEntertainmentꢀ
-ꢀꢀLighting
nꢀ DC/DCꢀconverters
nꢀ Powerꢀsupplies
nꢀ RoHSꢀcompliant*ꢀandꢀhalogenꢀfree**
ꢀ ꢀꢀSRP1770TAꢀSeriesꢀ-ꢀShieldedꢀPowerꢀInductors
Electrical Specifications @ 25 °C
General Specifications
Operating Temperature
Inductance
@ 100 KHz
................................-40 °C to +150 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Rated Current
......... Inductance drops 20 % at Isat1,
30 % at Isat2
Temperature Rise.....40 °C at rated Irms
Moisture Sensitivity Level.....................1
ESD Classification (HBM).................N/A
/ 1 V
Q (Min.)
SRF
DCR DCR
Irms
(A)
Bourns
Part Number
Tol. @100 KHz (MHz) (mW) (mW)
Isat1 Isat2 Terminal
L (µH) (%)
± 20
/ 1 V
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
Typ.
35
30
22
17
15
12
11
10
8
7
5
4
4
3
3
2
2
Typ. Max.
(A)
60
52
(A)
70
65
62
54
50
45
39
31
29
27
23
20
18
16
15
13
12
Type
SRP1770TA-1R0M
SRP1770TA-1R5M
SRP1770TA-2R2M
SRP1770TA-3R3M
SRP1770TA-4R7M
SRP1770TA-5R6M
SRP1770TA-6R8M
SRP1770TA-8R2M
SRP1770TA-100M
SRP1770TA-150M
SRP1770TA-220M
SRP1770TA-330M
SRP1770TA-390M
SRP1770TA-470M
SRP1770TA-560M
SRP1770TA-680M
SRP1770TA-101M
1
1.6
2
2
2.5
52
47
1.5 ± 20
2.2 ± 20
3.3 ± 20
4.7 ± 20
5.6 ± 20
6.8 ± 20
8.2 ± 20
2.4
3.5
4.8
5.8
8.4
9.6
11.8
2.7 43.5 47
3.9
5.5
7.05
9.2
10.8
13
28
25
21
19
18
45
41
40
32
25
1
Circuit design, component, PCB trace
size and thickness, airflow and other
cooling provisions all affect the part
temperature. Part temperature should be
verified in the end application.
Lead
10
15
22
33
39
47
56
68
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
16.5 24
Frame
17.8 20.5 12.5 23
25.1 26.5 12 18
10.7 15
9.2 11
8.7 9.5
38
40
44
48
Materials
48
55
Core.............................Carbonyl powder
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging....... 300 pcs. per 13-inch reel
54
62
7.8
7
5.3 6.5
9
8
68
80
100 ± 20
102
118
Soldering Profile
Product Dimensions
Lead Frame Terminal
Preheating
Soldering
Natural Cooling
T
(260 °C / 10 Sec. Max.)
P
17.6ꢀ ꢀ0.ꢁ
(.693ꢀ ꢀ.016)
t
(245 °C, 20~40 Sec.)
p
16.9ꢀ ꢀ0.3
(.666ꢀ ꢀ.012)
217 °C
200 °C
150°C
60~150 Sec.
60~180
Sec.
101
1510
480 Sec. Max.
25
Time (Seconds)
Reflow Times: 3 Times Max.
0ꢀ~+ꢀ0.25
16.9ꢀ ꢀ0.3
(0ꢀ~+ꢀ.010)
6.7ꢀ ꢀ0.3
(.666ꢀ ꢀ.012)
(.26ꢁꢀ ꢀ.012)
2.1ꢀ ꢀ0.3
(.083ꢀ ꢀ.012)
2.3ꢀ ꢀ0.3
How to Order
Recommended Layout
18.5
(.728)
SRP1770TA - 220 M
(.091ꢀ ꢀ.012)
Model
Value Code (see table)
Tolerance Code
12.5
(.ꢁ92)
12.2
(.ꢁ80)
11.9ꢀ ꢀ0.3
(.ꢁ69ꢀ ꢀ.012)
*ꢀꢀRoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
ꢀ
MM
(INCHES)
DIMENSIONS:
**Bournsꢀconsidersꢀaꢀproductꢀtoꢀbeꢀ“halogenꢀfree”ꢀifꢀ(a)ꢀtheꢀBromineꢀ(Br)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀ(b)ꢀtheꢀChlorineꢀꢀ
ꢀꢀꢀꢀ(Cl)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀandꢀ(c)ꢀtheꢀtotalꢀBromineꢀ(Br)ꢀandꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ1500ꢀppmꢀorꢀless.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
ꢀ
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀ
performanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.