RLB9012-122KL

INDUCTOR, POWER, 1200UH, 0.48A, 10%

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Manufacturer: BOURNS
Product type: Radial Leaded Power Inductors
Product Range:RLB9012 Series; Inductance:1.2mH; Inductor Construction:Unshielded; RMS Current (Irms):480mA; Saturation Current (Isat):-; DC Resistance Max:2.9ohm; 32M9850
SVHC: No SVHC (04-Feb-2026)
Inductance: 1.2mH
Product Range: RLB9012 Series
DC Resistance Max: 2.9ohm
RMS Current (Irms): 480mA
Inductance Tolerance: ± 10%
Inductor Construction: Unshielded
Saturation Current (Isat): -

Delivery and price
Units per pack	1000
Price	0.345 €
Current stock	200+
Lead time	30 days

Datasheet

**==> picture [44 x 42] intentionally omitted <==**

**----- Start of picture text -----**<br>
*RoHS COMPLIANT<br>**----- End of picture text -----**<br>


## **Features** 

## **Applications** 

Available in E12 series Power supplies Inductance range: 1.0 μH to 47 mH DC/DC converters RoHS compliant* General use 

## **RLB9012 Radial Inductor** BOURNS (iy 

## ~~**General Specifications**~~ 

Inductance Drop at Rated Current (IDC).................................................................................................................................................5 % Operating Temperature ......................................................................................................................................................-55 °C to +125 °C Storage Temperature ........................................................................................................................................................-55 °C to +105 °C 

## ~~**Materials**~~ 

Core Material.........................................................................................................................................................................Ferrite DR core Wire............................................................................................................................................................................Enameled copper wire Terminal .........................................................................................................................................................................................Cu/AG/Sn Tube..............................................................................................................................................................Shrinkable tube 125 °C, 600 V 

## ~~**Product Dimensions**~~ 

## ~~**Electrical Schematic**~~ 

**==> picture [483 x 188] intentionally omitted <==**

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9.0 9.0<br>(.354) (.354)<br>MAX. MAX.<br>12.2<br>(.480) 2.5<br>MAX. (.098)<br>MAX.<br>Typical Part Marking<br>DIMENSIONS ARE: MM 18.0 ± 5.0 Inductance Code:<br>(INCHES) (.709 ± .197) (.984 ± .197)25.0 ± 5.0 470 -- Third digit represents the First two digits are significant<br>4 4 || — number of zeroes to follow<br>— 4) i -<br>0.65 ± 0.05<br>(.026 ± .002)<br>5.0 ± 0.8<br>= (.197 ± .031) =<br>**----- End of picture text -----**<br>


|**BOURNS Part No.**<br>~~ri.~~<br>~~rs~~|**Inductance**<br>**(µH)**<br>~~ri.~~<br>~~|~~|**Q**<br>**ref.**<br>~~ri.~~<br>~~|-~~|**Test freq. (MHz)**<br>~~ri.~~<br>~~-|~~|**Test freq. (MHz)**<br>~~ri.~~<br>~~-|~~|**SRF**<br>**(MHz) min.**<br>~~ri.~~<br>~~||~~|**RDC**<br>**(ohms) max.**<br>~~ri.~~<br>~~||~~|**IDC**<br>**(A) max.**<br>~~ri.~~<br>~~|~~|
|---|---|---|---|---|---|---|---|
||||**L**<br>~~ri.~~<br>~~-~~|**Q**<br>~~ri.~~<br>~~|~~||||
|RLB9012-1R0ML<br>~~rs~~<br>~~oo~~|1.0 ± 20 %<br>~~|~~|20<br>~~|-~~|1K<br>~~-~~|7.96<br>~~|~~|150.00<br>~~||~~|0.013<br>~~||~~|10.0<br>~~|~~|
|RLB9012-1R5ML<br>~~rs~~<br>~~oo~~|1.5 ± 20 %<br>~~|~~|20<br>~~| -~~|1K<br>~~- ~~|7.96<br> ~~|~~|100.00<br>~~| |~~|0.016<br>~~| |~~|8.50<br>~~|~~|
|RLB9012-2R2ML<br>~~oo~~|2.2 ± 20 %|20|1K|7.96|90.00|0.021|6.50|
|RLB9012-3R3ML<br>~~oo~~<br>~~es~~|3.3 ± 20 %<br>~~nD~~|20<br>~~DD~~|1K<br>~~DD~~|7.96<br>~~(ON~~|65.00<br>~~QO~~|0.025<br>~~QO~~|5.50|
|RLB9012-4R7ML<br>~~oo~~<br>~~es~~|4.7 ± 20 %<br>~~nD~~|20<br>~~DD~~|1K<br>~~DD~~|7.96<br>~~(ON~~|51.00<br>~~QO~~|0.030<br>~~QO~~|4.60|
|RLB9012-6R8ML<br>~~es~~<br>~~ee~~|6.8 ± 20 %<br>~~nD ~~<br>~~ee~~|20<br> ~~DD~~<br>~~ee~~|1K<br>~~DD~~<br>~~ee~~|7.96<br>~~(ON~~<br>~~ee~~|29.00<br>~~QO~~<br>~~ee~~|0.035<br>~~QO~~<br>~~ee~~|4.10<br>~~ee~~|
|RLB9012-100KL<br>~~ee~~<br>~~oo~~|10.0 ± 10 %<br>~~ee~~|50<br>~~ee~~|1K<br>~~ee~~|2.52<br>~~ee~~|14.00<br>~~ee~~|0.045<br>~~ee~~|3.40<br>~~ee~~|
|RLB9012-120KL<br>~~ee~~<br>~~oo~~|12.0 ± 10 %<br>~~ee~~|50<br>~~ee~~|1K<br>~~ee~~|2.52<br>~~ee~~|13.00<br>~~ee~~|0.050<br>~~ee~~|3.10<br>~~ee~~|
|RLB9012-150KL<br>~~oo~~<br>~~oo~~|15.0 ± 10 %<br>~~oo~~|50|1K|2.52|12.00|0.056|2.90|
|RLB9012-180KL<br>~~oo~~<br>~~oo~~|18.0 ± 10 %<br>~~oo~~|40|1K|2.52|11.00|0.061|2.66|
|RLB9012-220KL<br>~~oo~~<br>~~oo~~<br>~~oo~~|22.0 ± 10 %<br>~~oo~~<br>|40<br>|1K<br>|2.52<br>|9.20<br>|0.070<br>|2.40<br>|
|RLB9012-270KL<br>~~oo~~<br>~~oo~~|27.0 ± 10 %<br>~~oo~~<br>|40<br>|1K<br>|2.52<br>|8.50<br>|0.080<br>|2.22<br>|
|RLB9012-330KL<br>~~oo~~<br>~~oo~~|33.0 ± 10 %<br>~~oo~~<br>|30<br>|1K<br>|2.52<br>|7.80<br>|0.090<br>|2.05<br>|
|RLB9012-390KL<br>~~oo~~|39.0 ± 10 %<br>|30<br>|1K<br>|2.52<br>|6.90<br>|0.100<br>|1.85<br>|
|RLB9012-470KL<br>~~ooa~~|47.0 ± 10 %<br>~~a~~|30<br>~~a~~|1K<br>~~a~~|2.52<br>~~a~~|6.50<br>~~a~~|0.160<br>~~a~~|1.77<br>~~a~~|
|RLB9012-560KL<br>~~a~~|56.0 ± 10 %<br>~~a~~|30<br>~~a~~|1K<br>~~a~~|2.52<br>~~a~~|5.40<br>~~a~~|0.180<br>~~a~~|1.48<br>~~a~~|



## **RLB9012 Radial Inductor** 

## ~~**Electrical Characteristics (Continued)**~~ 

|**BOURNS Part No.**|**Inductance**<br>**(µH)**|**Q**<br>**ref.**|**Test freq. (MHz)**|**Test freq. (MHz)**|**SRF**<br>**(MHz) min.**|**RDC**<br>**(ohms) max.**|**IDC**<br>**(A) max.**|
|---|---|---|---|---|---|---|---|
||||**L**|**Q**||||
|RLB9012-680KL|68.0 ± 10 %|30|1K|2.52|4.90|0.210|1.36|
|RLB9012-820KL|82.0 ± 10 %|30|1K|2.52|4.10|0.230|1.30|
|RLB9012-101KL|100.0 ± 10 %|20|1K|0.796|3.70|0.280|1.40|
|RLB9012-121KL|120.0 ± 10 %|20|1K|0.796|3.40|0.320|1.25|
|RLB9012-151KL|150.0 ± 10 %|20|1K|0.796|3.20|0.370|1.15|
|RLB9012-181KL|180.0 ± 10 %|20|1K|0.796|2.80|0.580|1.08|
|RLB9012-221KL|220.0 ± 10 %|20|1K|0.796|2.70|0.650|1.00|
|RLB9012-271KL|270.0 ± 10 %|20|1K|0.796|2.40|0.750|0.90|
|RLB9012-331KL|330.0 ± 10 %|20|1K|0.796|2.30|0.850|0.78|
|RLB9012-391KL|390.0 ± 10 %|20|1K|0.796|2.10|1.000|0.74|
|RLB9012-471KL|470.0 ± 10 %|20|1K|0.796|1.90|1.100|0.68|
|RLB9012-561KL|560.0 ± 10 %|20|1K|0.796|1.80|1.400|0.64|
|RLB9012-681KL|680.0 ± 10 %|20|1K|0.796|1.60|1.600|0.59|
|RLB9012-821KL|820.0 ± 10 %|20|1K|0.796|1.50|1.800|0.56|
|RLB9012-102KL|1000.0 ± 10 %|20|1K|0.252|1.30|2.900|0.51|
|RLB9012-122KL|1200.0 ± 10 %|15|1K|0.252|1.20|3.400|0.48|
|RLB9012-152KL|1500.0 ± 10 %|15|1K|0.252|1.10|3.800|0.43|
|RLB9012-182KL|1800.0 ± 10 %|15|1K|0.252|1.00|5.300|0.39|
|RLB9012-222KL|2200.0 ± 10 %|15|1K|0.252|0.80|5.900|0.36|
|RLB9012-272KL|2700.0 ± 10 %|15|1K|0.252|0.70|8.200|0.32|
|RLB9012-332KL|3300.0 ± 10 %|15|1K|0.252|0.60|9.100|0.29|
|RLB9012-392KL|3900.0 ± 10 %|15|1K|0.252|0.55|9.900|0.27|
|RLB9012-472KL|4700.0 ± 10 %|15|1K|0.252|0.50|13.60|0.24|
|RLB9012-562KL|5600.0 ± 10 %|15|1K|0.252|0.45|14.90|0.22|
|RLB9012-682KL|6800.0 ± 10 %|15|1K|0.252|0.40|20.70|0.20|
|RLB9012-822KL|8200.0 ± 10 %|15|1K|0.252|0.35|22.70|0.18|
|RLB9012-103KL|10,000 ± 10 %|15|1K|0.079|0.32|25.10|0.17|
|RLB9012-123KL|12,000 ± 10 %|15|1K|0.079|0.28|34.70|0.15|
|RLB9012-153KL|15,000 ± 10 %|15|1K|0.079|0.25|48.90|0.14|
|RLB9012-183KL|18,000 ± 10 %|15|1K|0.079|0.23|53.60|0.12|
|RLB9012-223KL|22,000 ± 10 %|15|1K|0.079|0.21|59.30|0.11|
|RLB9012-273KL|27,000 ± 10 %|15|1K|0.079|0.19|82.70|0.10|
|RLB9012-323KL|33,000 ± 10 %|15|1K|0.079|0.17|91.50|0.09|
|RLB9012-393KL|39,000 ± 10 %|15|1K|0.079|0.15|125.50|0.08|
|RLB9012-473KL|47,000 ± 10 %|15|1K|0.079|0.12|137.80|0.08|



Packaging: 200 pieces per bag 

REV. 03/15 

Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.

Updated at June 3, 2026

Bourns, Inc. is a globally recognized manufacturer of high-reliability electronic components, headquartered in Riverside, California. Renowned for its engineering excellence, the company delivers critical solutions across a diverse range of demanding markets, including automotive, industrial, consumer electronics, telecommunications, and medical equipment. The Bourns product portfolio is anchored by an industry-leading selection of passive components and circuit protection devices. The brand is particularly dominant in magnetic components, offering thousands of high-performance power inductors, alongside specialized RF and toroidal inductors engineered for optimized power management and signal integrity. Equally prominent is their comprehensive suite of circuit protection solutions. This robust lineup features a vast array of standard and resettable fuses, transient voltage suppressors (including TVS varistors and diodes), and gas discharge tubes (GDTs) designed to rigorously safeguard sensitive electronics against overvoltage and overcurrent faults. Beyond its core passives and protection technologies, Bourns manufactures highly effective EMC and RFI suppression components, such as common mode chokes and power line filters. The company's offering also extends into discrete semiconductors and power management, including Schottky diodes, fast recovery rectifiers, bridge rectifiers, and board-level transformers. This expansive breadth of quality components provides design engineers with a trusted foundation for developing resilient, efficient, and long-lasting electronic systems.

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