F-SERIES Datasheet, PDF (1/2 Pages) Ohmite Mfg. Co. – For vertical mounting with solderable pins

F and R Series Heatsinks
For TO-218, TO-220 and TO-247 devices
F e at u r e s
• For vertical mounting with solderable pins
• For TO-220, TO-218, TO-247
S E R IE S S P ECI F ICATI O N S
Heatsink
Part Number
Height
(in. ±.010 /
mm ±.25) For Package Type
Ohmite Resistor Series
RA-T2X-25E 1.0/25.4
RA-T2X-38E 1.5/38.1
RA-T2X-51E 2.0/50.8
RA-T2X-64E 2.5/63.5
FA-T220-25E 1.0 / 25.4
TO-220, -218, -247
TO-220, -218, -247
TO-220, -218, -247
TO-220, -218, -247
TO-220, -218, -247
TBH25,TCH35, TEH70, TEH100
TBH25,TCH35, TEH70, TEH100
TBH25,TCH35, TEH70, TEH100
TBH25,TCH35, TEH70, TEH100
TBH25,TCH35, TEH70, TEH100
FA-T220-38E
FA-T220-51E
FA-T220-64E
*Natural convection
1.5 / 38.1
2.0 / 50.8
2.5 / 63.5
TO-220, -218, -247
TO-220, -218, -247
TO-220, -218, -247
TBH25,TCH35, TEH70, TEH100
TBH25,TCH35, TEH70, TEH100
TBH25,TCH35, TEH70, TEH100
Surface
Thermal
Area
Res.*
(mm²) Weight (g) (°C/W)
8,901
25
4.8
12,983
38
3.9
17,065
51
3.5
21,148
63
3.1
9,285
18
4.7
13,756
27
3.8
18,222
37
3.4
22,814
46
3
characteristics
Finish Black anodized
Material 6063-T5 aluminum
Solder 100% Tin (Sn)
PC board attachement 0.091” dia. pre-tinned pins.
Heat Dissipation
R Series
Air Velocity (ft./min.)
0
100
90
80
70
100 200 300 400 500 600 700 800 900 1000
5
H = 1"
H = 1.5"
4.5
H = 2"
4
H = 2.5"
3.5
60
3
50
2.5
40
2
30
1.5
20
1
10
0.5
0
0
0 2 4 6 8 10 12 14 16 18 20
Heat Dissipated (watts)
F Series
Air Velocity (ft./min.)
0
100
90
80
70
100 200 300 400 500 600 700 800 900 1000
5
H = 1"
H = 1.5"
4.5
H = 2"
4
H = 2.5"
3.5
60
3
50
2.5
40
2
30
1.5
20
1
10
0.5
0
0
0 2 4 6 8 10 12 14 16 18 20
Heat Dissipated (watts)
176
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax [phone] • www.ohmite.com • [e-mail]
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