TT electronics BI Technologies SMT Division has released a series of non-inductive power resistors with power ratings from 20W to 140W, in transistor-style packages (TO-126, TO-220, TO263 and TO-247). The devices are all rated for operation from -55°C to +155°C.

The MHP Series resistors are available in five power ratings and four TO-style package types:

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The MHP-20 Series resistors are in three package styles – TO126 (MHP20S), TO220 (MHP20) and the surface mount TO263 (D2Pak) (SMHP) packages, and are rated for 20W power dissipation, with resistance ranges from 0.01Ω to 220Ω at maximum power (up to 51KΩ is available to 10W rated power), with tolerances of ±5% and ±1%, and TCRs from 50 to 250 ppm/degC. Thermal resistance is 5.9°C/W from the resistor’s "hot spot" to the package’s metal flange.

The MHP-35 Series resistors are in TO-220 packages, and are rated for 35W power dissipation, with resistance ranges from 0.01Ω to 220Ω at maximum power (up to 51KΩ is available to 20W rated power), with tolerances of ±5% and ±1% and TCRs from 50 to 250ppm/°C. Thermal resistance is 3.3°C/W from "hot spot" to flange, and maximum operating voltage is 500V.

The MHP-50 Series resistors are in TO-220 packages, and are rated for 50W power dissipation, with resistance ranges from 0.01Ω to 220Ω at maximum power (up to 51KΩ is available to 30W rated power), with tolerances of ±5% and ±1%, and TCRs from 50 to 250 ppm/°C. Thermal resistance is 2.3°C/W from "hot spot" to flange, and maximum operating voltage is 500V.

The MHP-100 Series resistors are in TO-247 packages, and are rated for 100W power dissipation, with resistance ranges from 0.01Ω to 220Ω at maximum power (higher resistance is available at below rated power), with standard tolerances to ±5% and ±1%, and TCRs from 50 to 250 ppm/°C. Thermal resistance is 1.3°C/W from "hot spot" to flange.

The MHP-140 Series resistors are in TO-247 packages, and are rated for 140W power dissipation, with resistance ranges from 0.01Ω to 200Ω at maximum power (higher resistance is available at below rated power), with tolerances of ±5% and ±1%, and TCRs from 50 to 250ppm/°C. Thermal resistance is 0.9°C/W from "hot spot" to flange.

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The MHP Series resistors feature thermally enhanced two-leaded industry standard packages designed for mounting directly to a heatsink. All MHP Series devices are RoHS-compliant, and compatible with high temperature soldering processes normally employed for lead free solders.