Features
■ Shielded construction
■ Carbonyl powder core
■ High saturation current
■ Inductance range: 0.45 to 100 µH
■ AEC-Q200 compliant
■ RoHS compliant* and halogen free**
SRP1770TA Series - Shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Operating Temperature
Inductance
@ 100 KHz
................................-55 °C to +150 °C
(Temperature rise included)
Storage Temperature
................................-55 °C to +150 °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) (mΩ) (mΩ)
L (μH) (%)
Isat1 Isat2 Terminal
/ 1 V
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
Typ.
56
35
30
22
17
15
12
11
10
8
Typ. Max.
(A)
(A)
Type
SRP1770TA-R45M 0.45 ± 20
± 20
0.8
1.6
2
0.96
2
62
52
47
85 125
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
60
52
70
65
62
54
50
45
39
31
29
27
23
20
18
16
15
13
12
1.5 ± 20
2.2 ± 20
3.3 ± 20
4.7 ± 20
5.6 ± 20
6.8 ± 20
8.2 ± 20
2.5
2.4
3.5
4.8
5.8
8.4
9.6
11.8
2.7 43.5 47
3.9
5.5
28
25
21
19
18
45
41
40
32
25
7.05
9.2
1
Circuit design, component, PCB trace
10.8
13
Lead
Frame
size and thickness, airflow and other
cooling provisions all affect the part
temperature. Part temperature should be
verified in the end application.
10
15
22
33
39
47
56
68
± 20
± 20
± 20
± 20
± 20
± 20
± 20
± 20
16.5 24
7
17.8 20.5 12.5 23
25.1 26.5 12 18
10.7 15
9.2 11
8.7 9.5
5
4
38
40
44
48
Materials
4
3
48
55
Core.............................Carbonyl powder
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging....... 200 pcs. per 13-inch reel
3
54
62
7.8
7
9
8
2
68
80
100 ± 20
2
102
118
5.3 6.5
Soldering Profile
Product Dimensions
Lead Frame Terminal
Preheating
Soldering
Natural Cooling
T
(260 °C / 10 Sec. Max.)
P
17.6 0.4
(.693 .016)
t
(245 °C, 20~40 Sec.)
p
16.9 0.3
(.666 .012)
217 °C
200 °C
150°C
60~150 Sec.
60~180
Sec.
101
1510
480 Sec. Max.
25
0 ~+ 0.25
(0 ~+ .010)
Time (Seconds)
Reflow Times: 3 Times Max.
16.9 0.3
(.666 .012)
6.7 0.3
(.264 .012)
2.1 0.3
(.083 .012)
How to Order
Recommended Layout
2.3 0.3
(.091 .012)
SRP1770TA - 220 M
18.5
(.728)
Model
Value Code (see table)
Tolerance Code
MM
(INCHES)
11.9 0.3
(.469 .012)
12.5
(.492)
12.2
(.480)
DIMENSIONS:
*
RoHS Directive 2015/863, Mar 31, 2015 and Annex.
** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine
(Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.
Specifications are subject to change without notice.
WARNING
Users should verify actual device performance in their specific applications.
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of
this document, and at www.bourns.com/docs/legal/disclaimer.pdf.