# Power Inductor (SMD), 3.3 µH, 12 A, Shielded, 27 A, SRP1238A Series, 5045[1312 Metric]
**URL**: https://novapart.co/products/SRP1238A-3R3M/power-inductor-smd-33-h-12-a-shielded-27-srp1238a
**SKU**: SRP1238A-3R3M
**Manufacturer**: BOURNS
**Category**: Passive Components || Inductors || Power Inductors || SMD Power Inductors
**Price**: €0.5860
**Stock**: 1000+
**Lead Time**: 113 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Inductance | 3.3µH |
| Product Range | SRP1238A Series |
| Product Width | 12.5mm |
| Product Height | 3.3mm |
| Product Length | 13.5mm |
| Dc Resistance Max | 0.0135ohm |
| Rms Current (Irms) | 12A |
| Inductance Tolerance | ± 20% |
| Inductor Construction | Shielded |
| Inductor Case / Package | 5045[1312 Metric] |
| Saturation Current (Isat) | 27A |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:4738545/)
## **Features**
■ Shielded construction
■ Carbonyl powder core
■ High saturation current
■ Inductance range: 0.10 to 10 µH
- AEC-Q200 compliant
■ RoHS compliant* and halogen free**
## **SRP1238A Series - Shielded Power Inductors**
|**Bourns**
**Part Number**
~~Son~~|**Inductance**
**@ 100 KHz**
**/ 1 V**
~~Son~~|**Inductance**
**@ 100 KHz**
**/ 1 V**
~~Son~~|**Q (Min.)**
**@100 KHz**
**/ 1 V**
~~Son~~|**SRF**
**(MHz)**
**Typ.**
~~Son~~|**DCR**
**(m**Ω**)**
**Typ.**
~~Son~~|**DCR**
**(m**Ω**)**
**Max.**
~~Son~~|**Irms**
**(A)**
~~Son~~|**Isat**
**(A)**
~~Son~~|**Terminal**
**Type**
~~Son~~|
|---|---|---|---|---|---|---|---|---|---|
||**L**
**(μH)**
~~Son~~|**Tol.**
**(%)**
~~Son~~||||||||
|SRP1238A-R10Y
~~Son~~|0.10
~~Son~~|± 30
~~Son~~|10
~~Son~~|175
~~Son~~|0.36
~~Son~~|0.43
~~Son~~|43
~~Son~~|84
~~Son~~|Non-
Lead
Frame
~~Son~~|
|SRP1238A-R15Y|0.15|± 30|10|140|0.4|0.48|41|75||
|SRP1238A-R22M|0.22|± 20|10|125|0.7|0.81|38.5|65||
|SRP1238A-R33M|0.33|± 20|10|85|0.85|1.0|36.5|62||
|SRP1238A-R47M|0.47|± 20|10|80|1.2|1.8|32|55||
|SRP1238A-R60M|0.60|± 20|15|53|1.5|2.2|29|51|Lead
Frame|
|SRP1238A-R68M|0.68|± 20|15|50|1.9|2.5|28|49||
|SRP1238A-R82M|0.82|± 20|15|45|2.2|3.0|25|44||
|SRP1238A-1R0M|1.0|± 20|15|40|2.7|3.5|24|40||
|SRP1238A-1R2M|1.2|± 20|20|35|4|4.0|21|37||
|SRP1238A-1R5M|1.5|± 20|20|30|4.8|5.5|19|35||
|SRP1238A-1R8M|1.8|± 20|20|27|5.2|7.0|17|30||
|SRP1238A-2R2M|2.2|± 20|20|25|6.3|8.0|16|29||
|SRP1238A-3R3M|3.3|± 20|20|20|11|13.5|12|27||
|SRP1238A-4R7M|4.7|± 20|20|15|15.3|18.5|10|24||
|SRP1238A-5R6M|5.6|± 20|20|15|18|22.0|9.5|19||
|SRP1238A-6R8M|6.8|± 20|20|13|20|24.0|9|18||
|SRP1238A-8R2M|8.2|± 20|20|12|23|28.0|8.5|16||
|SRP1238A-100M|10|± 20|20|11|29|34.0|7|14||
## ~~**General Specifications**~~
Test Voltage ....................................1.0 V Test Frequency ......................... 100 KHz Operating Temperature ................................-55 °C to +150 °C
(Temperature rise included) Storage Temperature ................................-55 °C to +150 °C Rated Current ............ Inductance drops 20 % at Isat Temperature Rise .....40 °C at rated Irms Moisture Sensitivity Level .....................1 ESD Classification (HBM).................N/A
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.
## ~~**Materials**~~
Core .............................Carbonyl powder Wire ............................Enameled copper Terminal Finish ...................................Sn Packaging ....... 500 pcs. per 13-inch reel
**==> picture [505 x 270] intentionally omitted <==**
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How to Order
Product Dimensions SRP1238A - 100M
Non-Lead Frame Terminal Lead Frame Terminal
Model
(.531 ± .020)13.5 ± 0.5 (.531 ± .020)13.5 ± 0.5 Value Code (see table)
— — Recommended Layout — [|]
R15 3R3 14.2
1510 1510 (.559)
5.0
12.5 ± 0.3 3.3 ± 0.2 12.5 ± 0.3 3.3 ± 0.2 (.197)
(.492 ± .012) (.130 + .008) (.492 ± .012) (.130 + .008)
8.0
-— 2.75 ± 0.35 2.75 ± 0.35 a mar (.315)
(.108 ± .014) (.108 ± .014)
(.091 ± .012)2.3 ± 0.3 (.079)2.0 (.091 ± .012)2.3 ± 0.3 (.079)2.0 DIMENSIONS: (INCHES)MM
REF. REF.
—r — -
GRADUATEDLINE GRADUATEDLINE Please consult —— Bourns [® ] Model SRP-A
Series Visual Inspection Guide for detailed
construction, processing and testing
4.7 ± 0.3 4.7 ± 0.3 information.
(.185 ± .012) DIMENSIONS: MM (.185 ± .012)
(INCHES)
ae a e |
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* 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 ~~a~~ www.bourns.com/docs/legal/disclaimer.pdf.
**WARNING Cancer and Reproductive Harm** ~~AU~~ www.P65Warnings.ca.gov
## **SRP1238A Series - Shielded Power Inductors**
**==> picture [516 x 555] intentionally omitted <==**
**----- Start of picture text -----**
L vs. I Charts
SRP1238A-R10Y SRP1238A-R15Y SRP1238A-R22M
0.2 120 0.4 140 0.4 120
120
0.15 90 0.3 100 0.3 90
80
0.1 60 0.2 0.2 60
60
0.05 30 0.1 40 0.1 30
20
0 0 16.8 33.6 50.4 67.2 840 0 0 15 30 45 60 750 0 0 13 26 39 52 650
DC Current (A) DC Current (A) DC Current (A)
SRP1238A-R33M SRP1238A-R47M SRP1238A-R60M
0.8 120 0.8 120 1.0 150
0.6 90 0.6 90 0.8 120
0.6 90
0.4 60 0.4 60
0.4 60
0.2 30 0.2 30 0.2 30
0 0 0 0 0 0
0 15.5 31 46.5 62 0 11 22 33 44 55 0 10.2 20.4 30.6 40.8 51
DC Current (A) DC Current (A) DC Current (A)
SRP1238A-R68M SRP1238A-R82M SRP1238A-1R0M
1.5 120 1.5 120 1.5 120
1.2 1.2 1.2
90 90 90
0.9 0.9 0.9
60 60 60
0.6 0.6 0.6
0.3 30 0.3 30 0.3 30
0 0 0 0 0 0
0 7 14 21 28 35 42 49 0 11 22 33 44 0 8 16 24 32 40
DC Current (A) DC Current (A) DC Current (A)
SRP1238A-1R2M SRP1238A-1R5M SRP1238A-1R8M
2.5 130 2.5 120 3.0 100
2.0 104 2.0 90 2.4 80
1.5 78 1.5 1.8 60
60
1.0 52 1.0 1.2 40
0.5 26 0.5 30 0.6 20
0 0 7.4 14.8 22.2 29.6 370 0 0 7 14 21 28 350 0 0 5 10 15 20 25 300
DC Current (A) DC Current (A) DC Current (A)
SRP1238A-2R2M SRP1238A-3R3M SRP1238A-4R7M
4 150 6 120 10 150
3 120 5 90 8 120
4
90 6 90
2 3 60
60 2 4 60
1 30 1 30 2 30
0 0 7.25 14.5 21.75 290 0 0 5.4 10.8 16.2 21.6 270 0 0 6 12 18 240
DC Current (A) DC Current (A) DC Current (A)
H)Inductance (μ Inductance (H)μ Inductance (H)μ
Temperature Rise (°C) Temperature Rise (°C) Temperature Rise (°C)
H)Inductance (μ Inductance (H)μ H)Inductance (μ
Temperature Rise (°C) Temperature Rise (°C) Temperature Rise (°C)
H)Inductance (μ H)Inductance (μ Inductance (H)μ
Temperature Rise (°C) Temperature Rise (°C) Temperature Rise (°C)
Inductance (H)μ H)Inductance (μ H)Inductance (μ
Temperature Rise (°C) Temperature Rise (°C) Temperature Rise (°C)
Inductance (H)μ H)Inductance (μ H)Inductance (μ
Temperature Rise (°C) Temperature Rise (°C) Temperature Rise (°C)
**----- End of picture text -----**
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.
## **SRP1238A Series - Shielded Power Inductors**
## ~~**L vs. I Charts (Continued)**~~
**==> picture [480 x 207] intentionally omitted <==**
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SRP1238A-5R6M SRP1238A-6R8M SRP1238A-8R2M
10 120 10 120 12 120
8 90 8 90 9 90
6 6
60 60 6 60
4 4
2 30 2 30 3 30
0 0 0 0 0 0
0 3.8 7.6 11.4 15.2 19 0 3 6 9 12 15 18 0 4 8 12 16
DC Current (A) DC Current (A) DC Current (A)
SRP1238A-100M
15 120
12
90
9
60
6
30
3
0 0
0 3.5 7 10.5 14
DC Current (A)
H)Inductance (μ H)Inductance (μ H)Inductance (μ
Temperature Rise (°C) Temperature Rise (°C) Temperature Rise (°C)
H)
μ
Inductance (
Temperature Rise (°C)
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## ~~**Soldering Profile**~~
**==> picture [247 x 163] intentionally omitted <==**
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NATURAL
PRE-HEATING SOLDERING COOLING
TP (260 °C / 10 seconds max.)
tp (245 °C / 20~40 seconds)
217
200
150 60 ~ 150 seconds
60 ~ 180 seconds
480 seconds max.
25
Time (Seconds)
REFLOW TIMES: 3 MAX.
Temperature (°C)
**----- End of picture text -----**
## ~~**Electrical Schematic**~~
**==> picture [81 x 61] intentionally omitted <==**
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.
## **SRP1238A Series - Shielded Power Inductors**
## ~~**Packaging Specifications**~~
**==> picture [449 x 329] intentionally omitted <==**
**----- Start of picture text -----**
330 2.0 ± 0.5
(12.99) [DIA.] (.079 ± .020)
a a THICKNESS
13.5 ± 0.5 (.004)
(.531 ± .020) MAX.
DIA.
\al 6X
100.0 ± 2.0
(3.937 ± .079)
oe yy E s 8a? NS 28
13.5 ± 0.5
(.531 ± .020) _ [DIA.] r\
24.0 ± 0.5
24
(.945 ± .020)
(.945)
1.75
y (.069) et (.157)4.0 a a (.079)2.0 (.059 ± .004)1.5 ± 0.1 DIA. tr (.014 ± .002)0.35 ± 0.05 13.0 ± 0.1
(.512 ± .004)
11.5 ± 0.1
(.453 ± .004)
24.0 ± 0.3
(.945 ± .012)
14.2 ± 0.1
AOU 16.0 ± 0.1 ooOo} 3 ° 4.0 ± 0.1 Ji (.559 ± .004)
Cs (.630 ± .004) “LLLi (.157 ± .004)
7.0 ± 0.1
USER DIRECTION OF FEED —
(.276 ± .004)
QTY: 500 PCS. PER REEL 13.0 ± 0.1
(.512 ± .004)
MM
DIMENSIONS:
(INCHES)
Date Code Marking Date Code Marking Date Code Marking Date Code Marking Date Code Marking
**----- End of picture text -----**
**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. 11/19
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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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 requirements in generic applications. The characteristics and parameters of a Bourns[®] product in a user application may
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## Links
- [View this product on Novapart](https://novapart.co/products/SRP1238A-3R3M/power-inductor-smd-33-h-12-a-shielded-27-srp1238a)
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- [Supplier page](https://es.farnell.com/bourns/srp1238a-3r3m/smd-pwr-ind-3-3uh-12a-shielded/dp/4738545)
---
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