Features
■ Shielded construction
■ Inductance range: 0.68 to 330 µH
■ Heating current up to 9.5A
■ AEC-Q200 qualified
■ RoHS compliant* and halogen free**
SRR1050A Series - Shielded Power Inductors
Operating Temperature
................................. -40 °C to +125 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +125 °C
Temperature Rise
.......................40 °C typ. at rated Irms
Rated Current
............ Inductance drops 35 % at Isat
Failure In Time (FIT) ........24.7/109 hours
Mean Time Between Failures (MTBF)
.................................. 40.4 x 106 hours
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ....... 700 pcs. per 13-inch reel
Materials
Product Dimensions
DIMENSIONS: MM
(INCHES)
Bourns
Part Number
Inductance @
100 kHz/0.1V
SRF
(MHz)
Typ.
DCR (Ω)I rms
(A)
I sat
(A)
***K-
Factor
L (μH) Tol. (%) Typ. Max.
SRR1050A-R68Y 0.68 ± 30 110 0.0045 0.0055 9.50 13.5 221
SRR1050A-1R2Y 1.2 ± 30 85 0.0058 0.007 8.30 10.5 158
SRR1050A-2R2Y 2.2 ± 30 53 0.0071 0.009 7.20 8.20 123
SRR1050A-3R3Y 3.3 ± 30 40 0.0086 0.011 6.50 7.80 100
SRR1050A-4R2Y 4.2 ± 30 29 0.0104 0.014 6.10 6.40 85
SRR1050A-6R8Y 6.8 ± 30 27 0.0151 0.019 5.40 5.40 65
SRR1050A-8R2Y 8.2 ± 30 21 0.0181 0.022 5.00 4.85 58
SRR1050A-100Y 10 ± 30 16.5 0.023 0.031 4.50 4.45 58
SRR1050A-120Y 12 ± 30 15 0.026 0.035 3.80 4.00 53
SRR1050A-150Y 15 ± 30 14 0.035 0.047 3.40 3.60 44
SRR1050A-180Y 18 ± 30 11 0.038 0.051 3.10 3.20 41
SRR1050A-220Y 22 ± 30 10.5 0.046 0.062 2.90 2.95 38
SRR1050A-270Y 27 ± 30 10 0.057 0.077 2.60 2.70 33
SRR1050A-330Y 33 ± 30 9 0.069 0.093 2.50 2.40 30
SRR1050A-390Y 39 ± 30 6.8 0.079 0.106 2.25 2.30 28
SRR1050A-470Y 47 ± 30 5.9 0.094 0.127 2.00 2.00 26
SRR1050A-560Y 56 ± 30 5.5 0.124 0.160 1.90 1.90 24
SRR1050A-680Y 68 ± 30 5 0.138 0.208 1.60 1.65 22
SRR1050A-820Y 82 ± 30 4.5 0.150 0.230 1.45 1.50 20
SRR1050A-101Y 100 ± 30 4.2 0.179 0.255 1.35 1.35 18
SRR1050A-121Y 120 ± 30 3.8 0.213 0.305 1.18 1.28 16
SRR1050A-151Y 150 ± 30 3.6 0.253 0.370 1.10 1.12 15
SRR1050A-181Y 180 ± 30 3.4 0.307 0.420 1.00 1.04 13
SRR1050A-221Y 220 ± 30 3 0.373 0.500 0.94 0.94 12
SRR1050A-271Y 270 ± 30 2.4 0.491 0.675 0.80 0.84 11
SRR1050A-331Y 330 ± 30 2 0.613 0.815 0.73 0.75 10
*RoHS COMPLIANT
& AEC APPROVED
330
10.0 ± 0.3
(.394 ± .012)
10.20 ± 0.3
(.402 ± .012)
MAX.
4.80 ± 0.3
(.189 ± .012)
3.00 ± 0.3
(.118 ± .012)
7.80 ± 0.4
(.307 ± .016)
1.20 ± 0.15
(.047 ± .006)
13.00
(.512) REF.
100
Δ I (peak-to-peak ripple current,
A),
determine core loss from Core Loss vs. Flux Density plot.
Core Loss vs. Flux Density
Flux Density Bp-p (gauss)
1
10
100
0.10
100
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10 KHz
100001000
0.01
0.001
1000
Core Loss (mW)
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
* RoHS Directive 2002/95/EC Jan. 27, 2003 including
annex and RoHS Recast 2011/65/EU June 8, 2011.
**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. Users should verify actual device performance in their specific applications.
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
SRF0504 Series - Line Filter
Inductance vs. IDC
SRR1050A Series - Shielded Power Inductors
Temperature vs. IDC
0
0
0.5
1.0
1.5
2.0
2.5
2 4 6 8 10 12 14
IDC (A)
01 2 3 4 5 6
IDC (A)
0 0.3 0.6 0.9 1.2 1.5
IDC (A)
0 0.9 1.8 2.7 3.6 4.5
IDC (A)
L (µH)
0
3
6
9
12
L (µH)
0
8
16
24
32
L (µH)
L @ 25 °C L @ 125 °C
0
50
100
150
200
250
L (µH)
0
20
40
60
80
100
02468101214
IDC (A)
01234567
IDC (A)
0 0.3 0.6 0.9 1.2 1.5
IDC (A)
0 0.9 1.8 2.7 3.6 4.5
IDC (A)
0
20
40
60
80
0
10
20
30
40
50
60
ΔT (°C)
ΔT (°C)
0
20
40
60
80
100
ΔT (°C)
ΔT (°C)
L @ 25 °C L @ 125 °C
L @ 25 °C L @ 125 °CL @ 25 °C L @ 125 °C
ΔT (°C) ΔT (°C)
ΔT (°C)ΔT (°C)
SRR1050A-2R2Y SRR1050A-100Y
SRR1050A-270Y SRR1050A-221Y
SRR1050A-2R2Y SRR1050A-100Y
SRR1050A-270Y SRR1050A-221Y
Recommended Layout
Electrical Schematic
How to Order
SRR1050A - 101Y
Model
Value Code (see table)
3.20
(.126)
7.30
(.287)
1.60
(.063)
1.60
(.063)
DIMENSIONS: MM
(INCHES)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
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.
Asia-Pacifi c:
Tel: +886-2 2562-4117
Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555
Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500
Fax: +1-951 781-5700
www.bourns.com
SRF0504 Series - Line Filter
SRR1050A Series - Shielded Power Inductors
REV. 02/17
DIMENSIONS: MM
(INCHES)
QTY: 700 PCS. PER REEL
Peak Temperature:
245 °C max.
Time Above 245 °C:
30 sec. max.
Time Above 217 °C:
60 ~ 150 sec. max.
250
Temperature (°C)
050
50
200
150
100
+4.0 °C / sec. max. 150~200 °C / 60~120 sec. +3.0 °C / sec. max. -(1.0~5.0) °C / sec. max.
Temperature
Rising Area Preheat Area Reflow Area Forced Cooling Area
200
Time (Seconds)
100 150
60 ~ 150 sec.
60 sec. max.
217 °C
60 ~ 120 sec.
250
26 +0
(1.02 +0)
30.4
(1.20)
2.0 ± 0.5
(.079 ± .020)
60.0 -0
(2.362 - 0)
330
(12.99)DIA.
13.0 ± 0.5
(.512 ± .020)DIA.
13.0 ± 0.5
(.512 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
24
(.945)
Components
200 m/m min.
Leader
no component
Trailer
400 m/m min.
no component
330 330 330 330 330
START
END
4
(.157) 16
(.63)
USER DIRECTION OF FEED
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
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