ILX Lightwave LDT-5910 Benchtop Thermoelectric Temperature Controller Unit

The ILX Lightwave LDT-5910 is a benchtop thermoelectric temperature controller delivering precise thermal management for laser diodes, IR detectors, and other sensitive optical components. Operating with up to 4.6 A output current and 15 W typical power, the unit maintains temperature stability of ±0.01 °C with settling times under 5 seconds. Its three control modes

Constant Temperature, Constant Sensor, and Constant Current - accommodate diverse thermal requirements.

The LDT-5910 accepts thermistor, RTD, and IC sensor inputs, offering 0.1 °C display resolution and real-time parameter monitoring via 7-segment LED and dot matrix display.

Technical Specifications

• Maximum Output Current: 4.6 A


• Maximum Output Power: 15 W (typical)


• Compliance Voltage: Up to 10 V


• Temperature Stability: ±0.01 °C


• Temperature Settling Time: <5 seconds


• Display Resolution: 0.1 °C


• Current Noise and Ripple: <1 mA RMS (LDT-5910C)


• Power Input: 100–240 VAC, 50/60 Hz


• Dimensions: 215 mm W × 100 mm H × 310 mm D


• Weight: 3.5 kg

Key Features

• Three temperature control modes for flexible operation


• Support for thermistor, RTD, and IC sensor types


• Output current limit control for thermoelectric module protection


• Overcurrent, overtemperature, and reverse voltage protection


• Automatic shutdown on open sensor or module detection (LDT-5910B)


• Optional GPIB/IEEE-488 interface (Model 1227) for remote control


• USB and RS-232 interfaces available on LDT-5910C variant


• Analog input/output support


• Rack-mountable form factor

Typical Applications

• Laser diode temperature stabilization


• Frequency stabilization of coherent sources


• IR detector cooling


• Precision thermal testing of photonic components

Compatibility & Integration Configurable with a wide variety of thermoelectric modules and thermal sensors. Remote programming via optional GPIB interface or native USB/RS-232 connectivity on LDT-5910C. Compatible with ILX Lightwave 1/2 width rack-mounting systems.