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
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
| Specification | PRC100 Std. Ref. | PT / SP Series | AT / ST Series | PTS Series (SMD) |
|---|---|---|---|---|
| Function | Temperature sensor (platinum DIN alternative) | Positive TCR compensator / sensor | 1KΩ positive TCR compensator | SMD compensator / sensor |
| Base Resistance | 100Ω @ 0°C (±0.12%) | Custom (any value) | 1KΩ (standard) | Custom (any value) |
| TCR | +3850 ppm/°C (std); custom to +6000 | +1400 to +6000 ppm/°C | +3500 ppm/°C (nominal) | To +6000 ppm/°C |
| Temp. Range | -65°C to +150°C | Application dependent | Application dependent | Application dependent |
| Mounting | Axial lead / probe | Axial lead (PT); SMD (SP) | Axial (AT); SMD (ST) | Surface mount (2-tab) |
| Key Use Case | Platinum RTD replacement; precision temperature measurement | Offset negative drift; true RMS compensation | A/D converter compensation; dB output correction | SMD thermal tracking for bridge circuits |
- Flagship Product
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.
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
PT & SP Series
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
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)