ILX Lightwave LDT-5525B- Thermoelectric Temperature Controller

The ILX Lightwave LDT-5525B is a high-precision thermoelectric temperature controller designed for laser diode and optoelectronic component testing. It delivers exceptional temperature stability and accuracy across a wide control range, with bipolar current source output and multiple operating modes to support diverse experimental and production workflows.

Technical Specifications

Temperature Control Range: −99°C to +199°C

Output Power: Up to 24 W

Output Current: Up to 4 A

Compliance Voltage: 6 V @ 4 A

Temperature Stability: Typical drift <±0.004°C; short-term (1 hr) <±0.004°C; long-term (24 hr) <±0.01°C

Control Algorithm: Hybrid Smart-Integrator

Current Limit Accuracy: ±50 mA (0–4.0 A range)

Output Ripple/Noise: <1 mA rms

Display Resolution: 0.1°C

TEC Output Type: Bipolar current source

Key Features

Three operating modes: Constant Temperature, Constant Sensor Resistance, Constant Current

Adjustable current limiting and compliance voltage for safe TE module operation

Large green LED display for real-time temperature readout

Hybrid Smart-Integrator algorithm ensures fast settling and minimal overshoot

Closed-case calibration via front panel or USB interface with automatic non-volatile memory storage

Sensor Compatibility & Calibration Supports NTC thermistors (2-wire, 25–450,000 Ω typical), AD590 series IC sensors (8 V bias), LM335 series (0.6 mA bias), and RTD sensors. Selectable thermistor sensing current (10 µA or 100 µA). Two-point calibration for IC sensors; Steinhart-Hart two-constant calibration for thermistors.

Typical Applications

Laser diode testing and frequency stabilization

IR detector cooling

Electronic device characterization

Optoelectronic component control and testing

Integration USB 2.0 interface supports remote operation. LabVIEW instrument drivers available. Operating environment: 0°C to 40°C, <80% RH non-condensing.