

Overview
The RLS-397 is a power Inductor made by RECOM Power in a 1812 package with 2 pins. 1.32A 140mΩ 2.1A 3.9uH ±20% 1812 Power Inductors ROHS.
PCBKit's library has its KiCad symbol (Device:L, from KiCad's library) and its footprint (Inductor_SMD:L_1812_4532Metric, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1331504). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
5- Current - Saturation(Isat)
- 2.1A
- Current Rating
- 1.32A
- DC Resistance(DCR)
- 140mΩ
- Inductance
- 3.9uH
- Tolerance
- ±20%
Order codes
1- RLS-397LCSC C1331504
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | 1 | Passive |
| 2 | 2 | Passive |
Open-source boards using it
All 1- 2 layers45.4 × 26 mm

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<iframe src="https://pcbkit.io/embed/parts/recom/RLS-397" title="RLS-397 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/recom/RLS-397.jpg" alt="RLS-397" width="1200" height="900">[](https://pcbkit.io/parts/recom/RLS-397)Questions
Is there a KiCad symbol and footprint for the RLS-397?
Yes. The symbol is Device:L and the footprint Inductor_SMD:L_1812_4532Metric, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the RLS-397?
1812, with 2 pins. Its footprint is drawn on this page.
Where is the RLS-397 datasheet?
RECOM Power publishes it: the Datasheet link on this page opens it.
Where can I order the RLS-397?
JLCPCB lists it as part C1331504, with 0 in stock; the sellers' links on this page open their listings.
What can replace the RLS-397?
Parts like it in the library: the SMTDR43-3R9M by 3L COILS, the PCD0503MT3R9 by Viking Tech, the 78433490390 by Würth Elektronik and the AIAP-02-3R9K by Abracon. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the RLS-397?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8SMTDR43-3R9M
SMD,4x4.5mm1.33A 3.9uH 93.7mΩ ±20% SMD,4x4.5mm Power Inductors ROHS3L COILSPower InductorsPCD0503MT3R9
22202.6A 3.9uH 60mΩ ±20% 2220 Power Inductors ROHSViking TechPower Inductors78433490390
-14.6A 28.9mΩ 3.9uH 5A ±20% - Power Inductors ROHSWürth ElektronikPower InductorsAIAP-02-3R9K
插件,D6.4xL14mm19mΩ 3.9uH 7.3A ±10% 插件,D6.4xL14mm Power Inductors ROHSAbraconPower InductorsAIRD-02-3R9M
插件,D21xL21mm11.4A 3.9uH 50A 5mΩ ±20% 插件,D21xL21mm Power Inductors ROHSAbraconPower InductorsAIRD-06-3R9M
插件,D21xL21mm11.4A 3.9uH 50A 5mΩ ±20% 插件,D21xL21mm Power Inductors ROHSAbraconPower Inductors2100HT-3R9-H-RC
插件,D=21.8mm15.3A 3.9uH 5mΩ ±15% 插件,D=21.8mm Power Inductors ROHSBournsPower Inductors2300HT-3R9-V-RC
插件,D=1.3mm29.2A 3.9uH 4mΩ ±15% 插件,D=1.3mm Power Inductors ROHSBournsPower Inductors