WV-T220-101E Datasheet, PDF (1/1 Pages) Ohmite Mfg. Co. – For TO-220 and TO-247 devices

WV Series Heatsinks
For TO-220 and TO-247 devices
T220 0.72" (18.3mm)
0.63"
T247 0.92" (23.4mm) (16.0mm)
T220 0.50" (12.7mm)
T247 0.71" (18.0mm)
T220
1.20"
(30.5mm)
T247
1.20-1.26"
(30.5-32.0mm)
0.14"
(3.6mm)
Ohmite Manufacturing has
launched a series of heatsink
solutions for use with our
popular TO-220 and TO-247
power resistors, or similarly
packaged semiconductors.
These self aligning heatsinks
feature solderable feet for
through-hole placement, and
an integrated clip which pro-
vides 13.2 (lbf) of force on the
center of the resistor, enhanc-
ing thermal performance and
reducing parts count and
assembly time.
S pe c i f i c at i ons
Heat Sink: Aluminum alloy 6063-
T5 or equivalent. Copper alloy
C110 or equivalent
Spring Clip: Music wire, per
ASTM A228
Foot: Cold-rolled steel, per ASTM
A366, commercial quality or
equivalent
Insulator: (optional) Sil-pad
900-S, K6 800-S, and K10, or
equivalent
Mounting: thru-hole, vertical
Suggested Sil Pad: Sil-Pad 900S
(Manufactured by Bergquist)
Clip Force: 13.2 lbf.
Heatsink
Part Number
For
Package
Type
WV-T220-101E TO-220
WV-T247-101E TO-247
Ohmite
Resistor
Series
Surface
Area
Thermal
(in²) Weight Resistance*
TBH25, TCH35 6.5 0.35 oz/10g Rs-a=10°C/W
TEH70
8.4 0.42 oz/12g Rs-a=7°C/W
*Natural convection
WV-T220-101E
WV-T247-101E
Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax [phone] • www.ohmite.com • [e-mail] 1