Temperature Sensors & Compensators

Wire wound RTD sensors and positive TCR compensators — precision thermal management from 50Ω to 5KΩ, with TCR up to +6000 ppm/°C.

Precision Thermal Management

PRC manufactures wire wound temperature-sensitive resistors that function as RTD sensors and thermal compensators. Designed with positive temperature coefficients up to +6000 ppm/°C, these components measure temperature, compensate for thermal drift, and stabilize precision circuits.

RTD Sensors

100Ω wire wound devices following platinum DIN standards at a fraction of the cost.

TCR Compensators

Positive TCR up to +6000 ppm/°C to offset negative drift in precision circuits.

Bridge Stabilization

Stabilize output of bridge circuits and signal conditioning systems.

Product Comparison

All series at a glance — find the right fit for your application.

PRC100 Standard Reference Series

100Ω (±0.12% at 0°C) wire wound temperature sensor with a TCR of +3850 ppm/°C meeting the platinum DIN standard (IEC 751, α = 0.00385 Ω/Ω/°C).

Unlike traditional platinum RTDs locked to a fixed 100Ω at 0°C, PRC100 custom sensors can be manufactured in any ohmic value from 50Ω to 5KΩ with tolerances from ±0.03% (1/4 DIN) to ±0.24% (DIN × 2). Design directly to your circuit’s optimal impedance without resistor network padding.

Resistance Range

50Ω–5KΩ

Headquarters

±0.03%

Min Temperature

−65°C

Sensitivity

Average 0.00385 Ω/Ω/°C (standard); custom sensitivities available

Tracking Charts

Computer-generated oil bath tracking charts available for your temperature span

Repeatability

Closely matched part-to-part; consistent output at the same temperature reference points

Power Rating

0.25W at +125°C, derating to zero power at +150°C

Response Time

Customizable; < 1 second (63.2% of step change, 0°C to +100°C)

Form Factors

Multiple axial lead and probe-style configurations

Stability

Change in Ro at 0°C < ±0.1°C (±0.038%) after 10 cycles 0°C to +150°C. Shelf life ±0.002%/year at 25°C

PT & SP Series

Positive TCR Compensators

The PT (through-hole) and SP (surface mount) series are positive temperature coefficient resistors designed as special-purpose sensors or compensators to stabilize negative drift in precision circuits. These linear-tracking components offset negative errors in dB output circuits and help achieve true RMS measurements.

Customizable to any ohmic value using pure metals, available alloys, or composite windings. TCR ranges from +1400 to +6000 ppm/°C. Standard 3500 ppm/°C compensators typically deliver needed performance without additional padding resistors.

TCR Range

+1400 to +6000 ppm/°C

Resistance

Any custom ohmic value

Standard TCR

~+3350 ppm/°C at 25°C

Mounting

Axial lead (PT) or SMD (SP)

Materials

Pure metals, alloys, or composite windings

Verification

Oil bath computer tracking charts available

Stability

Change in Ro at 0°C < ±0.1°C (±0.038%) after 10 cycles 0°C to +150°C. Shelf life ±0.002%/year at 25°C

AT & ST Series

1KΩ 3500 PPM Compensators

Standard 1KΩ, +3500 ppm/°C compensators kept in stock for fast delivery. Widely used in A/D conversion circuits and dB output correction applications.

The ST35 is a drop-in SMD replacement for the through-hole AT35 with interchangeable specifications, allowing direct design migration from through-hole to surface mount without re-characterizing the compensation circuit.

Resistance

1KΩ standard

TCR

+3500 ppm/°C nominal

Availability

In stock for fast delivery

Drop-in Migration

ST35 replaces AT35 directly

Use Cases

A/D converters, dB output correction

Mounting

Axial (AT) or SMD (ST)

Temperature Sensors & Compensators