# Heat Sink, Square, PCB, 2 Clips, T0-220 & T0-264, TO-247, 20.47 mm, 38 mm, 50 mm
**URL**: https://novapart.co/products/C247-050-2VE/heat-sink-square-pcb-2-clips-t0-220-264-to-247
**SKU**: C247-050-2VE
**Manufacturer**: OHMITE
**Category**: Cooling & Thermal Management || Heat Sinks || Natural Convection Heat Sinks
**Price**: €3.8800
**Stock**: 10+
## Description
Thermal Resistance:-; Packages Cooled:TO-247; External Width - Metric:20.47mm; External Height - Metric:38mm; External Length - Metric:50mm; External Diameter - Metric:-; Heat Sink M
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (23-Jan-2024) |
| Product Range | C |
| Packages Cooled | TO-247 |
| Heat Sink Material | Aluminium |
| Thermal Resistance | - |
| External Width - Metric | 20.47mm |
| External Height - Metric | 38mm |
| External Length - Metric | 50mm |
| External Width - Imperial | 0.81" |
| External Diameter - Metric | - |
| External Height - Imperial | 1.5" |
| External Length - Imperial | 2" |
| External Diameter - Imperial | - |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:2097713/)
**C Series TO-126, TO-247, TO-220 and TO-264 Package Heatsinks** Soe Ohmite introduces the C series (Pat. Pending). This series offers high performance, low cost and a compact heat sink with an integrated camming clip system for TO-126, TO-220, TO-247 and TO-264 devices. This powerful heat sink provides tool and fixture free assembly operation, largest surface areas and smallest space occupation. It is the ideal type of heat sink for high power density and small size (1U or 2U) electronic packaging with forced convection cooling.
## ~~**S E R i E S S P E C i F i C AT i O N S**~~
||**Surface**|||
|---|---|---|---|
|**Heatsink**|**Area**|**Weight**|**Length “L”**|
|**Part Number**|**(in2/mm2)**|**(oz/g)**|**(mm)**|
|C247-025|11 / 7,312|0.5 / 15|25|
|C247-050|23 / 14,858|1.1 / 31|50|
|C247-075|34 / 21,655|1.6 / 45|75|
|C264-030
C264-058
C264-085|13 / 8,774
25 / 16,963
37 / 24,861|0.7 / 19
1.35 / 37
1.97 / 54|30
58
85|
|C220-025
C220-050
C220-075
C126-025
C126-040
C126-050
C126-075|11 / 7,312
23 / 14,858
34 / 21,655
10.2 / 6,559
16.3 / 10,495
20.4 / 13,119
30.6 / 21,655|0.5 / 15
1.1 / 31
1.6 / 45
0.45 / 12.7
0.72 / 20.3
0.90 / 25.4
1.35 / 38.1|25
50
75
0.45 / 12.7
25
0.72 / 20.3
40
0.90 / 25.4
50
1.35 / 38.1
75|
## **F E A T U R E S**
- Minimum assembly cost and labor Spring Clips make the mounting holes, fasteners, tools and fixtures obsolete in assembly operations & reduce costs.
- Maximum Thermal Transfer Maximum surface area per unit volume, efficient cooling fins & consistent mounting force reduces thermal resistance.
- Maximum Repeatability Constant spring force over repeated assembly/disassembly.
- Maximum Reliability Resilient spring action locks electronic component in place. Fewer parts in assembly and no fasteners and washers required. Prevent short circuit by eliminating metal particles generated from hardware or thread tapping.
- Design Flexibility Maximum flexibility for dynamic device locations and power upgrading. “Configureto-Fit” gives designers total freedom to configure heat sink needed to fit into a multitude design environments.
## ~~**C h A R A C T E R i S T i C S**~~
|**Heat Sink**|Aluminum Alloy 6063-T5 or Equivalent|
|---|---|
||with either degreased or black anod-|
||ized finish.|
|**Spring Clip**|Music Wire, Per ASTM A228 with|
||bright nickelplating|
|**Solder Foot**|Cold-rolled Steel, Per ASTM A-366|
||with pure tin over copper strike. RoHS|
||compliant.|
|**Interface**|for improvement, use thermal joint|
|**Thermal**|compound, 0.005 Grafoil (TGon 800|
|**Resistance**|by Laird), or phase change material|
||(Hi-Flow byBergquist)|
|**Insulato**r|(Optional) Sil-Pad 900-S, K6 800-S|
||and K10 byBergquist|
## ~~**h E AT D i S S i PAT i O N**~~
Heat dissipation is the total for ALL DEVICES attached to heatsink.
**==> picture [507 x 164] intentionally omitted <==**
**----- Start of picture text -----**
Air Velocity (ft./min.) Air Velocity (ft./min.)
200 400 600 800 1000 200 400 600 800 1000
140 9 38
120 C247-025-1AE (1 device)C247-050-2AE (2 devices) 8 36 TO-126/CE-S102 (25mm long) one device w/Sil-pad 900s 12
C247-075-3AE (3 devices)
7
100 34 10
6
32
80 5
30 8
60 4
28
3
40 6
2 26
20
1 24
4
0 0 22 ca
0 5 10 15 2 3 4 5 6 7 8 9 10
Heat Dissipated, total for ALL devices (watts) Total Heat Dissipated (watts) (continued)
C) °
C/watts) ° C) above Ambient ( ° C/watts) °
Case to Ambient ( Average Heat Sink Temp. Rise Surface to Ambient (
Thermal Resistance from Mounting
Case Temp. Rise above Ambient (
Avg. Thermal Resistance from Mounting
**----- End of picture text -----**
**168** 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
## **C Series**
## **TO-126, TO-247, TO-220 and TO-264 Package Heatsinks**
## ~~**D i m E N S i O N S**~~
**==> picture [500 x 323] intentionally omitted <==**
**----- Start of picture text -----**
0.806" 0.785"
with TO-247 with TO-220
or TO-264 (19.94mm) TO-247
0.77" (20.47mm)
(19.6mm) 0.71"
(18mm) TO-126 & TO-220
0.73"
with TO-126 (18.6mm)
0.57"
1.28" 1.50" (14.48mm)
(32.5mm) (38mm)
1.12" TO-264
0.73" (28.5mm)
(18.5mm)
0.35"
(8.89mm)
0.10" 0.10" 0.73"
(2.5mm) 0.100" (2.5mm) 0.100" L-0.16" (4.06mm) (18.54mm)
(2.5mm) (2.54mm)
(all models) 0.08"
0.385" 0.385" (2.08mm)
(9.78mm) (9.78mm) (all models)
Land Pattern
X and Y dimensions at user discretion
ø 0.07" pth typ C L C L ø 0.10" pth
(1.8mm) Y X (2.5mm)
TO-126
0.71" 0.73"
(18.0mm) (18.6mm)
0.18"
(4.6mm) L – 0.16" (4.06mm) 0.08"
L (2.0mm)
**----- End of picture text -----**
## ~~**h O w T O O R D E R**~~
|**C **
**Ser**|**2 4 7 - 0 2 5 - 1 A E**
**ies**
**No. of**
**clips**
**Clip size**
**Finish**
A = black anodized
V = degreased
**Length**
(mm)
**RoHS Compliant**|**Standardpart numbers**|
|---|---|---|
|||**No Finish (degreased)**
**Black Anodized**
**No. of Clips**|
|||C247-025-1VE
C247-025-1AE
1
C247-050-2VE
C247-050-2AE
2
C247-075-3VE
C247-075-3AE
3|
|||C264-030-1VE
C264-030-1AE
1
C264-058-2VE
C264-058-2AE
2
C264-085-3VE
C264-085-3AE
3|
|||C220-025-1VE
C220-025-1AE
1
C220-050-2VE
C220-050-2AE
2
C220-075-3VE
C220-075-3AE
3|
|||C126-025-1VE
C126-025-1AE
1
C126-040-2VE
C126-040-2AE
2|
Packaging: Bulk
**==> picture [146 x 41] intentionally omitted <==**
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
**169**
## Links
- [View this product on Novapart](https://novapart.co/products/C247-050-2VE/heat-sink-square-pcb-2-clips-t0-220-264-to-247)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/ohmite/c247-050-2ve/heatsink-to-247-2-clips-no-finish/dp/2097713)
---
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