Elliptical Pin Heat Sinks – Cold Forged from Pure Aluminum

Elliptical Pin Heat Sink by Cold Forging

Cold-forged elliptical pin heat sinks offer the best thermal performance where there is good airflow (>200 LFM or 1.0 m/sec) in the system.

  1. Elliptical pin heat sinks offer low thermal resistance and low pressure drop (as compared to extruded heat sinks).
  2. The low pressure drop improves heat transfer in the entire system, especially the region behind the heat sink.
  3. The cold-forging process employs high pressure and low temperature. The high pressure ensures that no air bubbles, porosity or other impurities are trapped in the material and thus produces heat sinks with extremely high quality.
  4. Our pin fin heat sinks are cold-forged from pure aluminum 1070, which has much higher thermal conductivity than aluminum alloys like 6063 and 6061.
Part
Number
Width
(mm)
Length
(mm)
Height
(mm)
Weight
(g)
θSA (°C/W)
Natural
Convection
θSA (°C/W)
1.0 m/sec
(200 LFM)
θSA (°C/W)
2.0 m/sec
(400 LFM)
θSA (°C/W)
3.0 m/sec
(600 LFM)
Request
Quote
Request
Sample
S803-1900-09519199.53.230.410.47.635.97QuoteSample
S803-1900-145191914.55.021.07.325.384.16QuoteSample
S803-1900-245191924.57.112.94.563.462.74QuoteSample
S803-1900-279191927.97.811.64.113.152.52QuoteSample
S803-2700-09527279.56.418.56.204.343.32QuoteSample
S803-2700-145272714.510.012.54.273.032.30QuoteSample
S803-2700-245272724.514.37.622.621.921.49QuoteSample
S803-2700-279272727.915.76.832.351.741.36QuoteSample
S803-3500-09535359.511.212.03.922.642.01QuoteSample
S803-3500-145353514.517.67.932.621.781.35QuoteSample
S803-3500-245353524.525.54.801.601.110.87QuoteSample
S803-3500-279353527.928.14.301.441.010.79QuoteSample
S803-4500-09545459.518.18.692.811.841.39QuoteSample
S803-4500-145454514.528.65.771.881.250.94QuoteSample
S803-4500-245454524.541.03.491.140.780.60QuoteSample
S803-4500-279454527.945.23.131.030.700.55QuoteSample
S803-6000-09560609.529.96.422.051.300.98QuoteSample
S803-6000-145606014.547.34.261.370.880.66QuoteSample
S803-6000-245606024.566.52.570.830.550.42QuoteSample
S803-6000-279606027.973.02.300.740.490.38QuoteSample

Please click the part number to view the details of the heat sink, or click “Quote” or “Sample” to request a quote or a sample.

Please note all thermal resistance data are for reference only. They may vary from application to application. Please contact us if you would like us to perform thermal analysis, or determine the actual thermal resistance in your system.

The S803 series are optimized for medium to high airflow rates. For low airflow applications, please contact us for a different design.

The S803 series are designed to work with thermal grease and adhesive tapes. We recommend Chomerics T412 and 3M 8810 as the thermal tapes. Please also visit our S804 series for attachment using push pins.

Other benefits of cold-forged elliptical pin heat sinks

In cold forging, the pins are an integral part of the heat sink base – they are simply squeezed out of the base by high pressure. Unlike bonded fin heat sinks, there is no thermal resistance between the pins and the base in cold-forged heatsinks.

In addition to aluminum heat sinks, we also offer elliptical pin heat sinks made of pure copper (C11000). Copper heat sinks typically improve thermal performance by 10-20%. They are recommended for critical applications a few degrees of temperature reduction can make a big difference.

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