Thick-Film Chip Resistors Operate to 200°C

From TT electronics IRC, the HTC Series of thick-film chip resistors feature an operating temperature range of -55°C to +200°C (Figs 1 and 2). According to the vendor, these resistors are the first thick-film resistors with tin terminations to achieve the +200°C rating (Fig 3). Target applications include harsh environments such as automotive underhood, aerospace, down-hole instrumentation, oil and gas equipment, motor controls, power supply and circuit-protection applications.

Offered in resistances ranging from 1.0 Ω to 10 MΩ, these components come in standard case sizes such as 1206, 2010 and 2512, with voltage ratings of 200V, 400V and 500V, respectively. Resistance-value tolerances are ±0.5%, ±1% or ±5%, with absolute TCRs of ±100ppm/°C. Typical pricing for the HTC Series ranges from $0.37 to $0.42 each in quantities of 5000.

Fig 1. Resistors come in 1206, 2010 and 2512 case sizes with ratings from 200 V to 500 V.

Fig 2. Capable of operation at -55°C to +200°C, these resistors are derated above 150°C.

Fig 3. Constructed with Pb-free terminations with a leach-resistant nickel barrier,
these resistors meet MIL-STD-202 specifications for load life, moisture resistance and thermal shock.