WV-T247-101E
Heat Sink, Square, PCB, 12 °C/W, TO-247, 23.4 mm, 32 mm, 16 mm
- Manufacturer: OHMITE
- Product type: Natural Convection Heat Sinks
- Thermal Resistance:12°C/W; Packages Cooled:TO-247; External Width - Metric:23.4mm; External Height - Metric:32mm; External Length - Metric:16mm; External Diameter - Metric:-; Heat Sink Materi
- SVHC: No SVHC (27-Jun-2024)
- Product Range: W
- Packages Cooled: TO-247
- Heat Sink Material: Aluminium
- Thermal Resistance: 12°C/W
- External Width - Metric: 23.4mm
- External Height - Metric: 32mm
- External Length - Metric: 16mm
- External Width - Imperial: 0.92"
- External Diameter - Metric: -
- External Height - Imperial: 1.26"
- External Length - Imperial: 0.63"
- External Diameter - Imperial: -
| Delivery and price | |
|---|---|
| Units per pack | 50 |
| Price | 1.67 € |
| Current stock | 10+ |
| Lead time | 30 days |
## **W Series Heatsinks For TO-220, TO-247, and TO-264 devices** **==> picture [214 x 114] intentionally omitted <==** **----- Start of picture text -----**<br> a)<br>| | | oo<br>T247-101E<br> T220-101E T264-101E DT2-101E<br>**----- End of picture text -----**<br> The unique design (patent pending) of the W Series heat sinks combines a tin plated, solderable, integral spring clip with an extruded aluminum heat sink body for an all-in-one solution to through-hole mounting of TO-220, TO-247, and TO-264 packages. These self-aligning heat sinks feature solderable feet and an integrated clip with 13.2 (lbf) of force on the center of the device to enhance thermal performance. ## **F e a t u r e S** - Reduced Assembly Cost: spring clip and auto-align feature makes fasteners and fixtures obsolete, along with stray metal filings from tapped holes - Maximum Repeatability: clamping force of the spring clip is not degraded by repeated loading and unloading - Maximum Heat Transfer per Unit Space: maximum surface area per unit volume and consistent mounting force reduces thermal resistance - Maximum Resistance to Shock and Vibration: light weight, resilient spring clip locks the component in place and is highly resistant to shock and vibration - Maximum Reliability: helps prevent short circuits by eliminating metal particles from thread tapping • RoHS Compliant |~~**S e r i e S S P e c i F i c at i O N S**~~<br>~~a~~|~~**S e r i e S S P e c i F i c at i O N S**~~<br>~~a~~|~~**S e r i e S S P e c i F i c at i O N S**~~<br>~~a~~|~~**S e r i e S S P e c i F i c at i O N S**~~<br>~~a~~|~~**S e r i e S S P e c i F i c at i O N S**~~<br>~~a~~|~~**S e r i e S S P e c i F i c at i O N S**~~<br>~~a~~| |---|---|---|---|---|---| |**Heatsink**<br>**For Package**||**Ohmite Resistor**|**Surface Area**|**Surface Area**|**Thermal**| |**Part Number**|**Type **|**Series**|**(in2)**|**Weight**|**Resistance***| |WA-T220-101E TO-220<br>WV-T220-101E|WA-T220-101E TO-220<br>WV-T220-101E|TBH25, TCH35|6.5|0.35 oz/10g|Rs-a=12°C/W<br>Rs-a=13°C/W| |WA-T247-101E TO-247|WA-T247-101E TO-247|TEH70, TEH100|8.4|0.42 oz/12g|Rs-a=11°C/W| |WV-T247-101E|WV-T247-101E||||Rs-a=12°C/W| |WA-T264-101E TO-264<br>WV-T264-101E|WA-T264-101E TO-264<br>WV-T264-101E|TFH85|8.4|0.42 oz/12g|Rs-a=11°C/W<br>Rs-a=12°C/W| |WA-DT2-101E<br>WV-DT2-101E & TO-247|TO-220<br>WV-DT2-101E & TO-247|TBH25, TCH35,<br>TEH70,TEH100|15.1|0.79 oz/22g|Rs-a=7°C/W<br>Rs-a=8°C/W| *Natural convection at 10W heat dissipation |~~**c H a r a c t e r i S t i c S**~~<br>~~eee~~|~~**c H a r a c t e r i S t i c S**~~<br>~~eee~~|~~**c H a r a c t e r i S t i c S**~~<br>~~eee~~|~~**c H a r a c t e r i S t i c S**~~<br>~~eee~~| |---|---|---|---| |**Heat Sink**|Aluminum alloy 6063-T5 or equivalent.||| |**Spring Clip**|Music wire, per ASTM A228||| |**Pin**|Solderable 100% tin over copper strike||| |**Interface thermal**|for improvement, use thermal joint com-||| |**resistance**|pound or 0.005 Grafoil (TGon 800 by||| ||Laird)||| |**Interface electrical**|Sil-Pad 900S by Bergquist or equivalent||| |**isolation**|||| |**Mounting**|Vertical thru-hole mount||| |**Clip Force**|13.2 lbf.||| ||||| |||~~Patent~~|| |||Pending|(continued)| (continued) **180** 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com ## **W Series Heatsinks For TO-220, TO-247, and TO-264 devices** ## ~~**c H a r a c t e r i S t i c S**~~ ## **Heat Dissipation** ## **T220-101E, T247-101E and T264-101E** **==> picture [485 x 442] intentionally omitted <==** **----- Start of picture text -----**<br> DT2-101E<br>Air Velocity (ft./min.) Air Velocity (ft./min.)<br>200 400 600 800 1000 100 200 400 600 800 1000<br>250 14 12<br>140<br>Air Flow T220-101E 12 DT2-101E 10<br>200 Side to Side T247-101E, 120<br>T264-101E Air Flow<br>10 Side to Side Free<br>100 Air 8<br>150<br>8 80<br>6<br>100 6 60<br>Air Flow 4<br>FreeAir 4 40 along Fins<br>50 along FinsAir Flow 2 20 2<br>0 0 0 0<br>0 2 4 8 12 16 20 0 2 4 8 12 16 20<br>Heat Dissipated (watts) Heat Dissipated (watts)<br>d i m e N S i O N S<br>Land pattern<br>0.63"<br>(16.0mm)<br>0.08"<br>(2.0mm)<br>T220 0.72" (18.3mm) 0.63"<br>T247, T264 0.91" (23.1mm) (16.0mm) T220 0.72" 0.59" 0.500" ø 0.050"<br>(18.3mm) (15.0mm) (12.7mm) (1.3mm)<br>T247 0.92" 0.785" 0.711" CL<br>(23.4mm) (19.4mm) (18.1mm)<br>T264 (23.4mm) 0.92" (20.2mm) 0.80" (18.1mm) 0.711" 0.06" (1.5mm)<br>1.26" 1.20"<br>(32.0mm±0.3) (30.5mm ±0.3) ø 0.080" (2.0mm) 0.27" 0.18"<br>(6.9mm) (4.6mm)<br>ø 0.080" 1.71" (43.4mm)<br>0.14" REF* (2.0mm) 0.500" 0.711"<br>(3.6mm) (12.7mm) (18.1mm)<br>T247, T264T220 0.50" 0.71" (12.7mm)(18.0mm) Pin diameter0.06" (1.5mm) *Meets IPC-610 DT2 CL 0.08" (2.0mm)<br>Through-hole 0.18" 0.63"<br>Soldering (4.6mm) (16.0mm)<br>Requirement 0.28"<br>(16mm)<br>ø 0.050" typ. 0.89" (22.6mm)<br>(1.3mm) 0.59" 0.785"<br>(15mm) (19.4mm)<br>Mounting Surface Temp. RiseC)above Ambient ( ° C/watts)Surface to Ambient ( ° Mounting Surface Temp. RiseC)above Ambient ( ϒ C/watts)Surface to Ambient ( ϒ<br>Thermal Resistance from Mounting Thermal Resistance from Mounting<br>**----- End of picture text -----**<br> (in./ _mm ±0.3mm)_ ## ~~**O r d e r i N g i N F O r m at i O N**~~ ## **W A - T 2 2 0 - 1 0 1 E** **Series Coating Device Package RoHS** A- Black Anodized **size modifier Compliant** V- degreased N- Alodine 1500 Clear ## **Standard part numbers** WA-T220-101E WV-T220-101E WA-T247-101E WV-T247-101E WA-T264-101E WV-T264-101E WA-DT2-101E WV-DT2-101E **==> 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 **181**
Updated at April 29, 2026
With nearly a century of engineering expertise, Ohmite is a premier manufacturer of high-performance resistive and thermal management products. Founded in 1925, the company has continuously evolved alongside the electronics industry, building a reputation for resolving complex design challenges. Ohmite specializes in delivering reliable solutions for high-current, high-voltage, and high-energy applications across the industrial, medical, aerospace, and transportation sectors. The core of our Ohmite offering centers on their advanced cooling and thermal management solutions, particularly natural convection heat sinks. Engineered to efficiently dissipate thermal energy in demanding environments, these heat sinks help designers overcome critical thermal bottlenecks. By effectively managing heat dissipation, Ohmite's thermal products ensure the optimal performance and extended longevity of sensitive electronic assemblies. Complementing their thermal management expertise, our selection includes precision sensing and circuit protection components. Ohmite's robust force sensors and load cells provide dependable measurement capabilities for specialized industrial applications, while their temperature sensing and compensation NTC thermistors offer accurate environmental monitoring. These product lines reflect Ohmite’s enduring commitment to quality, innovation, and specialized component engineering.
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