# Power Inductor (SMD), 12 µH, 1.8 A, Unshielded, 1.53 A, SD43

![Product image](https://novapart.co/image/farnell:2526949/)

**URL**: https://novapart.co/products/SD43-123MLB/power-inductor-smd-12-h-18-a-unshielded-153-sd43
**SKU**: SD43-123MLB
**Manufacturer**: COILCRAFT
**Category**: Passive Components || Inductors || Power Inductors || SMD Power Inductors
**Price**: €0.4000
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Inductance | 12µH |
| Product Range | SD43 |
| Product Width | 4.2mm |
| Product Height | 3.45mm |
| Product Length | 4.7mm |
| Dc Resistance Max | 0.21ohm |
| Rms Current (Irms) | 1.8A |
| Power Inductor Case | 4.7mm x 4.2mm x 3.45mm |
| Inductance Tolerance | ± 20% |
| Inductor Construction | Unshielded |
| Saturation Current (Isat) | 1.53A |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2526949/)

Document 356-1 

## **– SMT Power Inductors SD43 Series** 

- Rugged, cost-effective power inductors 

- Excellent current handling; low DCR 

- Values greater than 27 µH are 10% tolerance 

## **Core material** Ferrite 

**Terminations** RoHS compliant tin-silver over tin over nickel over silver. **Weight** 0.17 – 0.20 mg 

**Ambient temperature** –40°C to +85°C with I rms current, +85°C to +125°C with derated current 

**Storage temperature** Component: –40°C to +85°C. Tape and reel packaging: –40°C to +80°C 

**Resistance to soldering heat** Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles **Moisture Sensitivity Level (MSL)** 1 (unlimited floor life at <30°C / 85% relative humidity) 

**Failures in Time (FIT) / Mean Time Between Failures (MTBF)** 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 **Packaging** 500/7″ reel; 2000/13″ reel; Plastic tape: 12 mm wide, 0.35 mm thick, 8 mm pocket spacing, 3.4 mm pocket depth **PCB washing** Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf. 

|**Part**|**Inductance**2|**DCR max**|**SRF typ**3||**Isat(A)**4||**Irms**|**rms(A)**5|
|---|---|---|---|---|---|---|---|---|
|**number**1|**(µH)**|**(mOhm)**|**(MHz)**|**10% drop**|**20% drop**|**30% drop**|**20°C rise 40°C rise**|**20°C rise 40°C rise**|
|SD43-102ML_|1.0 ±20%|33|100|5.5|6.1|6.5|3.4|5.8|
|SD43-142ML_|1.4 ±20%|38|90|4.8|5.5|5.9|3.1|5.8|
|SD43-182ML_|1.8 ±20%|42|80|4.1|4.6|5.1|2.7|4.6|
|SD43-222ML_|2.2 ±20%|47|65|3.6|4.1|4.4|2.3|3.8|
|SD43-272ML_|2.7 ±20%|52|60|3.4|3.8|4.1|2.2|3.7|
|SD43-332ML_|3.3 ±20%|58|50|2.9|3.3|3.5|2.1|3.3|
|SD43-392ML_|3.9 ±20%|76|47|2.6|3.0|3.2|1.9|3.0|
|SD43-472ML_|4.7 ±20%|94|45|2.4|2.8|3.0|1.9|2.9|
|SD43-562ML_|5.6 ±20%|101|40|2.2|2.5|2.7|1.6|2.8|
|SD43-682ML_|6.8 ±20%|110|35|2.0|2.3|2.5|1.5|2.5|
|SD43-822ML_|8.2 ±20%|132|30|1.83|2.1|2.2|1.4|2.2|
|SD43-103ML_|10.0 ±20%|182|28|1.70|1.95|2.1|1.3|2.2|
|SD43-123ML_|12.0 ±20%|210|24|1.53|1.75|1.90|1.1|1.8|
|SD43-153ML_|15.0 ±20%|235|22|1.33|1.58|1.73|1.0|1.7|
|SD43-183ML_|18.0 ±20%|338|19|1.25|1.43|1.58|0.89|1.5|
|SD43-223ML_|22.0 ±20%|378|17|1.15|1.32|1.43|0.85|1.4|
|SD43-273ML_|27.0 ±20%|522|16|1.00|1.14|1.26|0.73|1.1|
|SD43-333KL_|33.0 ±10%|540|14|0.90|1.05|1.14|0.62|0.90|
|SD43-393KL_|39.0 ±10%|587|13|0.84|0.97|1.07|0.61|0.90|
|SD43-473KL_|47.0 ±10%|844|12|0.77|0.87|0.93|0.53|0.86|
|SD43-563KL_|56.0 ±10%|937|11|0.72|0.80|0.86|0.51|0.70|
|SD43-683KL_|68.0 ±10%|1117|10|0.65|0.72|0.77|0.43|0.60|



1. When ordering, please specify **packaging** code: | **SD43-683KLC** 

**Packaging: C** = 7″ machine-ready reel. EIA-481 embossed plastic tape (500 parts per full reel). 

- **B** = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter C instead. 

- **D** = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (2000 parts per full reel). 

2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/ HP 4284A impedance analyzer. 

3. SRF measured using Agilent/HP 8753D network analyzer and Coilcraft SMD -D test fixture. 

- 4 DC current at which the inductance drops the specified amount from its value without current. 

5. Current the causes the specified temperature rise from25°C ambient. 

6. Electrical specifications at 25°C. 

Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 

## Document 356-1 Revised 12/12/14 

Document 356-2 

## **SMT Power Inductors – SD43 Series** 

## **Typical L vs Current** 

**==> picture [242 x 176] intentionally omitted <==**

**----- Start of picture text -----**<br>
1000<br>100 68 µH<br>27 µH<br>10 8.2 µH<br>3.3 µH<br>1.0 µH<br>1<br>0.1<br>0.01 0.1 1 10<br>Current (A)<br>Inductance (µH)<br>**----- End of picture text -----**<br>


## **Typical L vs Frequency** 

**==> picture [242 x 176] intentionally omitted <==**

**----- Start of picture text -----**<br>
1000<br>100 68 µH<br>27 µH<br>10 8.2 µH<br>3.3 µH<br>1.0 µH<br>1<br>0.1<br>0.01 0.1 1 10<br>Frequency (MHz)<br>Inductance (µH)<br>**----- End of picture text -----**<br>


**==> picture [475 x 280] intentionally omitted <==**

**----- Start of picture text -----**<br>
0.185<br>max<br>Irms Derating 4,70<br>120<br>110<br>0.165<br>100 max<br>4,20<br>90 XXX<br>80<br>70<br>60<br>50 0.136 max<br>3,45<br>40<br>30<br>Recommended<br>20<br>0.063 Land Pattern<br>10 1,60 0.061<br>0 1,55<br>-40 -20 0 20 40 60 80 100 120 140<br>Ambient temperature (°C)<br>0.085 0.102<br>2,15 2,60<br>0.129<br>0.051 3,28<br>1,30<br>Dimensions are in [inches ]<br>mm<br>Irms<br>Percent of rated<br>25°C<br>**----- End of picture text -----**<br>


**==> picture [117 x 44] intentionally omitted <==**

**==> picture [188 x 46] intentionally omitted <==**

Document 356-2 Revised 12/12/14 

**==> picture [82 x 33] intentionally omitted <==**



## Links

- [View this product on Novapart](https://novapart.co/products/SD43-123MLB/power-inductor-smd-12-h-18-a-unshielded-153-sd43)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/coilcraft/sd43-123mlb/inductor-12uh-1-8a-unshielded/dp/2526949)
---

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