FeaturesCOM
G E & PL I
ANNFR
T*
EE
**AUTOMOTIVEn Semi-shielded construction

G R A DELO

n AEC-Q200 compliant

HARo

HSn Bottom soldered lead-wire for enhanced product reliability

PLIANTn RoHS compliant* and halogen free**

*RoH

SCOM

SRN4012BTA Series - Semi-shielded Power Inductors

Electrical Specifications @ 25 °C

SRN4012BTA-R68M

0.68

20

SRN4012BTA-1R2M

1.220

2.2

20

4.720

SRN4012BTA-6R8M

6.820

SRN4012BTA-150M

1520

SRN4012BTA-R47M

SRN4012BTA-1R0M

SRN4012BTA-1R5M

SRN4012BTA-2R2M

SRN4012BTA-3R3M

SRN4012BTA-4R7M

SRN4012BTA-5R6M

SRN4012BTA-100M

SRN4012BTA-220M

SRN4012BTA-330M

SRN4012BTA-470M

0.47
1.0

1.5

3.3

5.610223347

Tol. %

2020202020

EE

FR

10238

10188

10140

10138

1092

10110

1076

1010

DCR
(mW)
Max.

25

30

36

4353

4.4

5352

4.2

62.4

66

3.9

79.2

3.3

98

112

2.8

134

135

45

5.052

44

Irms
(A)
Typ.

5.5

43

81.6

65

10

DCR
(mW)
Typ.

Ro VER LEA
HS SI D F
CO ON REM SA E
PL R
IA ENT*L (mH)Click these links for more information:
SRF(MHz)Typ.

ADBourns Part No.

Q@
1 MHzMin.

LE

Inductance @100 kHz / 1 V

Additional Information

2.5

162

165

2.1

198

1.8

201029230

276

1.4

20

1023

470

564

1.02020

1027

10

320

1910

384

850

16

1.2

1020

1100

1320

0.8

0.65

Isat(A)
Typ.

5.0

4.6

4.0

3.8

3.3

2.5

1.9

1.6

1.4

1.25
1.0

0.9

0.7

0.6

0.48

Product Dimensions
4.0 ± 0.2†(.157 ± .008)

1.0 ± 0.2†(.039 ± .008)

3.5 ± 0.3(.138 ± .012)

PRODUCT TECHNICAL INVENTORY SAMPLESSELECTOR LIBRARYCONTACTGeneral Specifications
Operating Temperature���������������������������������� -55 °C to +125 °C(Temperature rise included)
Storage Temperature(Component on board)���������������������������������� -55 °C to +125 °C(In tape and reel package)�������������� -10 °C to +40 °C, 50-60 % RH
Temperature Rise������40 °C at rated Irms1
Rated Current�������������� Inductance drops 30 % at Isat
Moisture Sensitivity Level����������������������1
ESD Classification (HBM)����������������� N/A
Note 1: Circuit design, component, PCB trace
size and thickness, airflow and other coolingprovisions all affect the part temperature. Part
temperature should be verified in the end
application.

Materials
1.2 ± 0.3(.047 ± .012)

4.0 ± 0.2†(.157 ± .008)

TOP VIEW

SIDE VIEW

Dimension does not include termination. For
maximum overall dimensions with termination,
add 0.1 mm (.004 in.).

BOTTOM VIEW†DIMENSIONS:Electrical Schematic

MM(INCHES)

Core���������������������������������������������� Ferrite
Wire�����������������������������Enameled copper
Terminal Finish��������������������������Ag/Ni/Sn
Coating���������������������������� Magnetic resin
Packaging������ 4000 pcs. per 13-inch reelRecommended Layout
4.5(.177)

How to Order

SRN4012BTA - R47M

4.5(.177)

Model
Value Code (see table)

1.5(.059)
DIMENSIONS:MM(INCHES)WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov* 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. 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.

SRN4012BTA Series – Semi-shielded Power Inductors
Soldering Profile< 30 Sec.

260

TC -5 °C

Temperature (°C)

MAX. RAMP UP RATE = 3 °C/SEC.
MAX. RAMP DOWN RATE = 6 °C/SEC.

217

60~150Sec.

PREHEAT AREA
200 °C
150°C

Pb Free AssemblyPreheat- Temperature Min. (Tsmin)- Temperature Max. (Tsmax)- Time(ts) from Tsmin to Tsmax
Ramp-up Rate (TL to Tp)

150 °C200 °C
60-120 seconds

3 °C/second max.

Liquidous temperature (TL)
Time (tL) maintained above TL
Peak package body temperature (Tp)60~120Sec.

25Profile Feature

217 °C
60-150 seconds

Time within 5 °C of Actual Peak Temperature(tp)Ramp-Down Rate (Tp to TL)Time 25 °C to Peak
8 Minutes Max.

Time 25 °C to Peak Temperature

Time (Seconds)

260 °C< 30 seconds

6 °C/second max.
8 minutes max.

REFLOW TIMES: 3 TIMES MAX.

L vs. I Charts

05.20

0006.50

1.20

DC Current (A)0.60

320.301602.00

3.00

4.00

Inductance (μH)

48

Temperature Rise (°C)

Inductance (μH)

64

0.90

1.00

64
48

0.80

320.40160.901.80

320.901602.80

03.50

Inductance (μH)

48

DC Current (A)

1.80

2.70

3.60

1.00

64
48

2.40

32

1.20

160
1.20

1.80

DC Current (A)

4.00

05.00

SRN4012BTA-2R2M80
64

1.80

48

1.20

32

0.60

16

2.40

7.00

80

3.60

0.60

3.00

2.40

0
00
4.50

4.80

02.00

0.80

1.60

2.40

3.20

04.00

DC Current (A)SRN4012BTA-4R7M

6.00

Temperature Rise (°C)

Inductance (μH)

64

2.10

163.0080

1.20080

2.70

1.40

320.24

DC Current (A)005.00

3.60

0.70

0.48

DC Current (A)SRN4012BTA-3R3M

048

0006.00

1.60

DC Current (A)

4.50

4.80

SRN4012BTA-1R5M

2.00

80

1.2003.60

640.72

DC Current (A)SRN4012BTA-1R2M

1.50

2.40

Inductance (μH)

3.90

03.00

Inductance (μH)

2.60

16

Temperature Rise (°C)

1.30

320.17

Temperature Rise (°C)

00.340.96

Temperature Rise (°C)

164880Temperature Rise (°C)

320.12640.51

SRN4012BTA-1R0M

SRN4012BTA-5R6M

80

5.6064

4.20

48

2.80

321.4016000.50

1.00

1.50

2.00

Temperature Rise (°C)

0.240.68

Inductance (μH)

481.2080Temperature Rise (°C)

640.36

Inductance (μH)

Inductance (μH)

0.48

SRN4012BTA-R68M

0.8580Temperature Rise (°C)

SRN4012BTA-R47M

0.60

02.50

DC Current (A)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.

SRN4012BTA Series – Semi-shielded Power Inductors
L vs. I Charts (continued)

32

1.60

160
0.80

1.20

1.60

5.20

32

2.60

16000
2.00

0.32

0.64

DC Current (A)

64

18.00

48

12.00

32

6.00

160
0.24

0.48

0.72

DC Current (A)

0.96

0
1.20

Inductance (μH)

Inductance (μH)

24.00

0

1.28

12.00

48

8.00

32

4.00

16000
1.60

0.30

64

27.00

48

18.00

32

9.00

1600.180.360.54

DC Current (A)0.7260.00

80

36.00

00.60

0.90

1.2001.50

DC Current (A)SRN4012BTA-330M

45.00

80

Temperature Rise (°C)

SRN4012BTA-220M

30.00

0.9664

DC Current (A)00.90

Inductance (μH)

0.40

48

Temperature Rise (°C)

07.80

80

16.00

Temperature Rise (°C)

3.2064

SRN4012BTA-150M

SRN4012BTA-470M

80

48.00

64

36.00

48

24.00

3212.00

1600

0.14

0.28

0.42

0.56

Temperature Rise (°C)

4810.40

Inductance (μH)

4.80

20.00

80

Temperature Rise (°C)

64

Inductance (μH)

Inductance (μH)

6.40

SRN4012BTA-100M

13.0080

Temperature Rise (°C)

SRN4012BTA-6R8M

8.0000.70

DC Current (A)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.

SRN4012BTA Series – Semi-shielded Power Inductors
Packaging Specifications
12.4 +2/-0(.488 ± .079/-0)

330(12.992)
100 ± 2(3.937 ± .079)
DIMENSIONS:

13 +0.5/-0.2(.512 +.020/-.008)

1.75 ± 0.1(.069 ± .004)

4.0 ± 0.1(.157 ± .004)

2.0 ± 0.1(.079 ± .004)

MM(INCHES)

0.35 ± 0.1(.014 ± .004)

1.5 ± 0.1(.059 ± .004)
DIA.

5.5 ± 0.1(.217 ± .004)

4.40 ± 0.1(.173 ± .004)

12.0 ± 0.3(.472 ± .012)
8.0 ± 0.1(.315 ± .004)

1.40 ± 0.1(.055 ± .004)

USER DIRECTION OF FEEDQTY: 4,000 PCS. PER REEL

4.40 ± 0.1(.173 ± .004)

Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com

REV. 06/23
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.

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C1753 05/17/18R