# Heat Sink, TO-3, 6 °C/W, TO-3, 45 mm, 25.4 mm, 45 mm

![Product image](https://novapart.co/image/farnell:4621359/)

**URL**: https://novapart.co/products/FK%20201SA-3/heat-sink-to-3-6-c-w-45-mm-254
**SKU**: FK 201SA-3
**Manufacturer**: FISCHER ELEKTRONIK
**Category**: Cooling & Thermal Management || Heat Sinks || Natural Convection Heat Sinks
**Price**: €1.2700
**Stock**: 100+
**Lead Time**: 92 days (indicative)

## Description

Thermal Resistance:6°C/W; Packages Cooled:TO-3; External Width - Metric:45mm; External Height - Metric:25.4mm; External Length - Metric:45mm; External Diamete; Available until stocks are exhausted

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Product Range | - |
| Packages Cooled | TO-3 |
| Heat Sink Material | Aluminium |
| Thermal Resistance | 6°C/W |
| External Width - Metric | 45mm |
| External Height - Metric | 25.4mm |
| External Length - Metric | 45mm |
| External Width - Imperial | 1.77" |
| External Diameter - Metric | - |
| External Height - Imperial | 1" |
| External Length - Imperial | 1.77" |
| External Diameter - Imperial | - |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4621359/)

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## **Finger shaped heatsinks for power semiconductors** 

|**art. no.**<br>**FK 318 SA**<br>**FK 254 SA**<br>**FK 191 SA**<br>**FK 127 SA**<br>ee <br>Po<br>Po<br>es <br>ee|Rth[K/W]<br>[mm]<br>**art. no.**<br>Rth[K/W]<br>[mm]<br>4.8<br>31.8<br>TO 3<br>**FK 318 SA-3**<br>4.8<br>31.8<br>without<br>5.8<br>25.4<br>TO 3<br>**FK 254 SA-3**<br>5.8<br>25.4<br>without<br>6.6<br>19.1<br>TO 3<br>**FK 191 SA-3**<br>6.6<br>19.1<br>without<br>8.0<br>12.7<br>TO 3<br>**FK 127 SA-3**<br>8.0<br>12.7<br>without<br> ee ~~e~~e<br>Se<br> a eses<br>esrs|
|---|---|



**material:** die-cast aluminium **surface treatment:** black lacquered 

**art. no.** [mm] Rth [K/W] **art. no.** [mm] Rth [K/W] ee ee **FK 201 SA** without 25.4 6 **FK 202 SA** without 12.7 8 ee a es **FK 201 SA 3** TO 3 25.4 6 **FK 202 SA 3** TO 3 12.7 8 ee ee es ns **FK 201 SA CB** CB 25.4 6 **FK 202 SA CB** CB 12.7 8 Po & L(TO 3-SOT 9 +TO 66 - SOT 32 - 10220) Daye 16,9 4 sia = J13 i I — a ee ar Uf Aj i PPP I 7 SS 1,5 413 3,6 **art. no.** [mm] Rth [K/W] eeeS ~~a~~ **FK 205 SA L** ~~a~~ L 31.8 9.0 ~~a~~ **FK 206 SA L** L 25.4 10.5 **FK 207 SA L** L 19.1 12.0 ~~es~~ a **FK 208 SA L** L 12.7 14.0 es **material:** aluminium **surface treatment:** black anodised 

**H** 

**H Attachable heatsinks** ➔ **C 10 – 14 Snap rivet** ➔ **E 34 Heatsinks for TO 5 and TO 18** ➔ **C 15 – 16 Kapton insulator washers** ➔ **E 8 Heatsinks for D PAK** ➔ **C 17 Silicone wafers** ➔ **E 2 – 4 Aluminium oxide wafers** ➔ **E 9 – 10 Mica wafers** ➔ **E 11** 

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## Links

- [View this product on Novapart](https://novapart.co/products/FK%20201SA-3/heat-sink-to-3-6-c-w-45-mm-254)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/fischer-elektronik/fk-201sa-3/heat-sink-to-3-6-c-w/dp/4621359)
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