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Ohmite TEH70 Series 70 Watt TO-247 Package Thick Film Power Resistors

HVF resistors are high voltage SMD chip resistors with voltage ratings up to 3,000 V operating.

WFH Series is a low profile, thermally efficient wirewound resistor design. With power ratings from 90-330 watts this resistor is designed to be heat sinked.

Ohmite Manufacturing's family of High Energy Wirewound Resistors employ special winding techniques to maximize the effective joule rating of each resistor. Most wirewound resistors are wound with the objective of meeting the stated power (wattage) rating and keeping cost low through the use of automatic winding equipment. Ohmite High Energy Wirewounds are hand-wound in order to maintain the tightest possible pitch (space between windings) and thereby maximize the mass of the resistive element. Since no wire substitutions are allowed, and no abrasive adjusting is permitted in this family, Ohmite can publish a fixed joule rating and fusing current for each part number in the series.

Ohmite's TBH25 TO220 style resistors are designed for a variety of uses that require intermediate heatsinkable power at an economical price. Engineered for industrial applications, these resistors deliver reliable performance to the traditional high quality Ohmite standard.

Ohmite's TDH resistor is an economical solution to intermediate power application design requirements. TDH's reliable thick film on alumina substrate construction can be easily heat sinked for higher power performance. TDH resistors are ideal for pulse-loading, pre-charge, bleeder, and snubber applications.

Ohmite's TCH35 TO220 package resistor provides 35 watts of steady state power when properly used in today's well defined heat sink applications. These very low inductance resistors are built under proprietary processes that deliver more power handling capability than other TO-220 package resistors of similar size. Standard lead forms are provided for manual or automatic insertion. A single screw mounting tab connects to the heat sink and should be accompanied by the use of a thermal compound. The TCH35 Series offers a low thermal resistance to the heat sink of <4.28°C/W.

The TUW/TUM Series resistors are our most economical power resistors. They are recommended for commercial applications where low cost is critical. They are available in small standard packs for standard values, or bulk packaged for even lower costs.

The TWM/TWW series radial terminal power resistors offer significant board space savings over axial terminal products. Generated heat is also kept away from the circuit board.

Ohmite D Series heatsinks provide an innovative solution for SMT compatible semiconductors and resistors. The unique design (Patent Pending) combines tin plated, solderable rods with an aluminum extruded heat sink body. These rods (or "rollers") are mated mechanically to the heatsink by forging to reduce the thermal resistance between the heatsink body and the solderable feet.

Ohmite E Series Heatsinks for TO-220 Devices feature vertical through-hole PCB mounting (3 holes are 0.142" diameter each). In heights of 1.5", 2.0", and 2.5", the Ohmite E Series Heatsinks are aluminum 6063-T5 or equivalent with either black anodized or degreased finish, The solder feet are tin plated brass.

Ohmite F and R series Heat Sinks For TO-218, TO-220 and TO-247 for Power Electronics

FCSL Series Metal Foil Current Sense Resistors which combine very low and stable TCRs (Temperature Coefficient of Resistance) in a wide selection of very low ohmic values.

Ohmite Power Chip® Thick Film on Alumina Substrate (TA Series) has a 125% higher operating temperature range than a competitive product of a similar design. Power Chip® Thick Film on Alumina Substrate (TA Series specifications, datasheets, buying information and inventory available at TTI.

This series has a thick film on alumina construction with wrap around terminals. Industry standard sizes are available as small as 0603. Good tolerances and TCR values make this series a good choice in many applications.

High value chip resistors in thick film technology

The TAP series delivers 1000W or 2000W of continuous power when properly mounted to a liquid cooled heat sink (based on 85°C mounting plate temperature) Applications include power conditioning, power distribution, power conversion, and power control.

The RW series incorporates "fins" in the resistor body similar to a heatsink to achieve the higher power rating. As more and more customers push to go to surface mount resistors, design engineers now have a 5W and 7W option that traditionally was only achieved in an axial leaded wirewound resistor.

Ohmite TP810 Series high energy resistors offer high power density and feature the impulse energy capability that is usually linked with wirewound or compositon resistors. These resistors take up very little board space and offer 8 resistance values ranging from 10-10K ohms at 5% tolerance.

Maxi-Mox resistors are also versatile. Suitable for industrial applications requiring still more power for high voltage switching, industrial control, and high voltage current limiting.