*R& oHS
AE C
C OM
AP P
PR LI
OV A NED TFeatures■ Shielded construction■ Inductance range: 1 to 100 µH■ Heating current up to 3.6 A■ AEC-Q200 qualified■ RoHS compliant* and halogen free**

SRR3818A Series - Shielded Power Inductors

BournsPart Number

SRR3818A-1R0Y
SRR3818A-1R5Y
SRR3818A-2R2Y
SRR3818A-2R7Y
SRR3818A-3R3Y
SRR3818A-3R9Y
SRR3818A-4R7Y
SRR3818A-6R8Y
SRR3818A-100M
SRR3818A-150M
SRR3818A-220M
SRR3818A-330M
SRR3818A-470M
SRR3818A-680M
SRR3818A-101M

Inductance @100 kHz/0.1 V
L (μH)

Tol. (%)

SRF(MHz)
Typ.

1.0
1.5
2.2
2.7
3.3
3.9
4.7
6.8
101522334768
100± 30± 30± 30
± 30
± 30
± 30
± 30
± 30
± 20± 20
± 20
± 20
± 20
± 20
± 20

165
12595
9075
7060
50
40
30
2520
151311

How to OrderMax.

I rms1(A)Typ.

I rms2(A)
Typ.

I sat
(A)

37
47
60
65
85
105
120
160
235
340
500
740
1030
1600
2600

2.75
2.5
21.9
1.7
1.6
1.5
1.25
10.8
0.65
0.5
0.45
0.38
0.283.6
3.1
2.6
2.5
2.1
2
1.9
1.6
1.3
1.05
0.8
0.65
0.56
0.46
0.34

2.1
1.6
1.4
1.3
1.15
1.05
0.95
0.8
0.65
0.55
0.43
0.34
0.3
0.24
0.2

DCR (mΩ)
Typ.

27.5
33
45.5
49.5
64.5
80
90
125
180
260
395590
825
1280
2040

Operating Temp........... -40 °C to +150 °C(Temperature rise included)
Storage Temperature .. -40 °C to +150 °C
Temperature Rise..................... 20 °C typ. at rated Irms1
40 °C typ. at rated Irms2
Rated Current............ Inductance drops 35 % at Isat
Moisture Sensitivity Level ..................... 1.................N/AMaterials
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ....... 1000 pcs. per 7-inch reel
Product Dimensions
3.80 ± 0.20(.150 ± .008)

Electrical Schematic

SRR3818A - 1R0YModel

3.80 ± 0.20(.150 ± .008)

Value Code (see table)

Recommended Layout
1.60(.063)

4.30(.169)

1.80 ± 0.20(.071 ± .008)

1.20 ± 0.20(.047 ± .008)

1.10(.043)

1.30 ± 0.20(.051 ± .008)

1.60(.063)

DIMENSIONS:MM(INCHES)

1.30 ± 0.20(.051 ± .008)

DIMENSIONS: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 specificapplications. 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

MM(INCHES)SRF0504
Filter Power Inductors
SRR3818ASeries
Series- Line- Shielded
Inductance vs. IDC
SRR3818A-1R0Y

SRR3818A-1R5Y
100%

100%

80%

80%

80%

60%

L/LOA

100%

L/LOA

120%

L/LOA

120%

60%

60%

40%

40%

40%

20%

20%

20%

0%

0%
00.5

1.0

1.5

2.0

2.5

0%
00.5

IDC (A)

1.0

1.5

2.00SRR3818A-3R3M

120%

80%

L/LOA

80%

L/LOA

80%

L/LOA

100%

60%
40%

40%

20%

20%

20%

0.4

0.8

1.2

0%

1.6

00.3

IDC (A)

1.2

0%

1.5

80%

80%

L/LOA

100%

80%
60%

60%

40%

40%

20%

20%

20%

0%

0%
0.9

1.2

00.2

0.4

0.6

0.8

0SRR3818A-220M

100%

100%

100%

80%

80%

80%

L/LOA

120%

L/LOA

120%

60%
40%

40%

20%

20%

20%

0%
0.0

0%
0.2

0.3

IDC (A)

0.4

0.5

0.6

0.4

0.6

0.8

SRR3818A-330M

60%

40%

0.1

0.2

IDC (A)

120%60%

1.20%

1.0

IDC (A)IDC (A)
SRR3818A-150M

0.9

60%

40%

0.6

0.6

SRR3818A-100M

100%0.3

0.3

120%

100%

00

IDC (A)

SRR3818A-6R8M

120%

L/LOA

L/LOA

0.9

IDC (A)

SRR3818A-4R7M

120%

0.6

2.0

60%

40%

01.5

SRR3818A-3R9M

120%

100%

60%

1.0

IDC (A)

100%

0%

0.5

IDC (A)

SRR3818A-2R7M

120%

L/LOA

SRR3818A-2R2M

120%

0%
00.1

0.2

0.3

IDC (A)

0.4

0.5

00.1

0.2

0.3

0.4

IDC (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 disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.

SRF0504
Filter Power Inductors
SRR3818ASeries
Series- Line- ShieldedInductance vs. IDC (Continued)
SRR3818A-680M

SRR3818A-101M
120%

100%

100%

100%

80%

80%

80%

60%

L/LOA

120%

L/LOA

L/LOA

SRR3818A-470M
120%

60%

60%

40%

40%

40%

20%

20%

20%

0%

0%
00.1

0.2

0.30.40%00.1

IDC (A)

0.2

0.300.10.1

IDC (A)

0.3

0.20.3

IDC (A)

Temperature vs. IDC
5048404036303024

ΔT (°C)50

ΔT (°C)

ΔT (°C)

SRR3818A-2R2M

SRR3818A-1R5Y

SRR3818A-1R0Y
60

201010120000123405

12

SRR3818A-2R7M

50

1.2

1.83020

2.40

3.000.5

1.5

2.00200.45

0.90

1.35

IDC (A)

0.5

1.80

2.25

1.5

2.02.540362401.0

SRR3818A-100M

50

121000IDC (A)ΔT (°C)

303.0202.548

ΔT (°C)

ΔT (°C)

1.0

SRR3818A-6R8M

60402.430

IDC (A)

SRR3818A-4R7M

1.810IDC (A)50

1.24010100.60.6

SRR3818A-3R9M

50

ΔT (°C)

ΔT (°C)

2000IDC (A)403004

SRR3818A-3R3M

504003IDC (A)IDC (A)

ΔT (°C)

2030
201000.5

1.0

IDC (A)

1.5

2.0000.4

0.8

1.2

IDC (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 disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.

1.6SRF0504
Filter Power Inductors
SRR3818ASeries
Series- Line- Shielded
Temperature vs. IDC (Continued)
SRR3818A-220M

50404040302010ΔT (°C)

50

ΔT (°C)

ΔT (°C)

SRR3818A-150M
5030
2000.30.6

0.9

00.20.4

IDC (A)

01.020100.30.4

IDC (A)

0.50.60.70.8

40362400.00.6

SRR3818A-101M

120.20.450ΔT (°C)

300.10.4

IDC (A)48

ΔT (°C)

ΔT (°C)

0.8

SRR3818A-680M

604000.00.6

IDC (A)

SRR3818A-470M

5020001.2

30

10100

SRR3818A-330M

30201000.1

0.20.3

IDC (A)

0.4

0.5

0.6

00.1

0.2

0.3

0.4

IDC (A)

Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com

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.

SRF0504
Filter Power Inductors
SRR3818ASeries
Series- Line- Shielded

Temperature
Rising Area

PreheatArea

Reflow
Area

ForcedCooling Area

+4.0 °C/Sec. Max.

150~200 °C / 60~120 Sec.

+3.0 °C/Sec. Max.

-(1.0~5.0) °C/Sec. Max.

Peak Temperature: 260 °C

Temperature (°C)

250

217 °C
60~150 Sec.

200

Peak Temperature 260max.
Max. Peak Temperature -530 sec. max.
Max. Time Above 217 : 60~150 sec. max.

60 Sec.
Max.

15060~120 Sec.

100
50500

100

150

200

250

Time (Seconds)

178
DIA.
(7.001)2.0 ± 0.5(.079 ± .020)

21.0 ± 0.8(.827 ± .031)

16.5(.650)
13.0(.512)
DIA.
50.0 -0(1.969 - 0)

13.0DIA.
(.512)

12.0(.472)

14.0 +0(.551 +0)
8.0(.315)

2.0(.079)

END

100

L eaderno component
200 m/m min.

100

100

C omponents

START100T railer
no component
400 m/m min.

USER DIRECTION OF FEEDQTY: 1000 PCS. PER REELDIMENSIONS:MM(INCHES)

08/17
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 NoticeThis legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. andP[ZHɉSPH[LZJVSSLJ[P]LS`¸)V\YUZ¹
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change^P[OV\[UV[PJL<ZLYZZOV\SKJOLJRMVYHUKVI[HPU[OLSH[LZ[YLSL]HU[PUMVYTH[PVUHUK]LYPM`[OH[Z\JOPUMVYTH[PVUPZJ\YYLU[and complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, andstatements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typicalrequirements in generic applications. The characteristics and parameters of a Bourns®WYVK\J[PUH\ZLYHWWSPJH[PVUTH`]HY`MYVT[OLKH[HZOLL[JOHYHJ[LYPZ[PJZHUKWHYHTL[LYZK\L[VP[OLJVTIPUH[PVUVM[OL)V\YUZ® product with other components
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of Bourns® products are responsible for ensuring compliance with safety-related requirements and standards applicable to[OLPYKL]PJLZVYHWWSPJH[PVUZBourns®WYVK\J[ZHYLUV[YLJVTTLUKLKH\[OVYPaLKVYPU[LUKLKMVY\ZLPUU\JSLHYSPMLZH]PUNSPMLJYP[PJHSVYSPMLZ\Z[HPUPUNHWWSPJH[PVUZUVYPUHU`V[OLYHWWSPJH[PVUZ^OLYLMHPS\YLVYTHSM\UJ[PVUTH`YLZ\S[PUWLYZVUHSPUQ\Y`KLH[OVYZL]LYLWYVWLY[`VYLU]PYVUTLU[HSKHTHNL<USLZZL_WYLZZS`HUKZWLJPÄJHSS`HWWYV]LKPU^YP[PUNI`[^VH\[OVYPaLK)V\YUZYLWYLZLU[H[P]LZ
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Bourns®Z[HUKHYKWYVK\J[ZHYLUV[[LZ[LK[VJVTWS`^P[O<UP[LK:[H[LZ-LKLYHS(]PH[PVU(KTPUPZ[YH[PVUZ[HUKHYKZNLULYHSS`VYHU`V[OLYNLULYHSS`LX\P]HSLU[NV]LYUTLU[HSVYNHUPaH[PVUZ[HUKHYKHWWSPJHISL[VWYVK\J[ZKLZPNULKVYTHU\MHJ[\YLKMVY\ZLPUHPYJYHM[VYZWHJLHWWSPJH[PVUZ)V\YUZL_WYLZZS`PKLU[PÄLZ)V\YUZ® standard products that are suitable for use in aircraft
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;OL\ZLHUKSL]LSVM[LZ[PUNHWWSPJHISL[V)V\YUZ® custom products shall be negotiated on a case-by-case basis by Bourns
and the user for which such Bourns®J\Z[VTWYVK\J[ZHYLZWLJPHSS`KLZPNULK(IZLU[H^YP[[LUHNYLLTLU[IL[^LLU)V\YUZ
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Users shall not sell, transfer, export or re-export any Bourns®WYVK\J[ZVY[LJOUVSVN`MVY\ZLPUHJ[P]P[PLZ^OPJOPU]VS]L[OLKLZPNUKL]LSVWTLU[WYVK\J[PVU\ZLVYZ[VJRWPSPUNVMU\JSLHYJOLTPJHSVYIPVSVNPJHS^LHWVUZVYTPZZPSLZUVYZOHSS[OL`\ZL
Bourns®WYVK\J[ZVY[LJOUVSVN`PUHU`MHJPSP[`^OPJOLUNHNLZPUHJ[P]P[PLZYLSH[PUN[VZ\JOKL]PJLZ;OLMVYLNVPUNYLZ[YPJ[PVUZHWWS`[VHSS\ZLZHUKHWWSPJH[PVUZ[OH[]PVSH[LUH[PVUHSVYPU[LYUH[PVUHSWYVOPIP[PVUZPUJS\KPUNLTIHYNVZVYPU[LYUH[PVUHSYLN\SH[PVUZ-\Y[OLY)V\YUZ® products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns® products may not, without
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bilingual versions are available at:
Web Page: http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF: http://www.bourns.com/docs/Legal/disclaimer.pdf*9