WTCP 5 A, 5 V PWM Temperature Controller

  • Drive up to ±5.0 A to TEC
  • Efficient Pulse-Width Modulation
  • Efficiency: 85-95 %
  • Single 5 VDC supply operation
  • Small package: 1.3" x 1.28" x 0.31"
  • Short term stability of 0.001°C
  • Compatible with thermistors
  • PCB-mounted 22-pin module
  • Adjustable current and voltage limits
  • Easy-to-use evaluation board

From: $99.00

Bulk Pricing (6 - 14): $92.00

Contact Factory for High Volume Pricing
Price adjustments will be reflected in the cart. For availability information please contact us. All prices are in US dollars and are subject to change without notice. Prices do not include shipping charges. An additional OEM discount applies on orders over 14 pieces. Contact factory for pricing. If ordering from or shipping to Australia, China, or Hong Kong, please contact your distributor.

The WTCP5V5A Temperature Controller delivers all the advantages of Pulse Width Modulated (PWM) control in a PCB-mounted package. The WTCP is compact and efficient, and usually does not require any additional heatsinking.

The WTCP temperature controller is perfectly suited for applications requiring high efficiency, low power dissipation, and high stability. Portable, airborne, and other space-constrained temperature control applications are ideal places to use the WTCP.


The WTCP5V5A can operate from a single 5 V power supply, or the WTCP and load can be driven from separate power supplies when even lower output current noise is required. The available WTCPEVAL evaluation circuit board includes everything needed to quickly configure the WTCP for a wide range of applications and load conditions. The on-board feedback loop parameter adjustment switches simplify tuning, and dramatically reduce your development time.

An OEM module board is also available, and can be preloaded at the factory with components fine-tuned for your application.


Thoughtfully designed features provide valuable benefits, and help ensure the long-term reliability of your application:

  • Separate heating- and cooling current limits protect the load from operational anomalies.
  • External passive components fine-tune the operating range for maximum control sensitivity and accuracy.
  • Versatile interface signals simplify integration of the WTCP into a wide range of applications.
  • Easy-to-use component selection calculator simplifies system design and configuration.

Built-in safety features make the WTCP robust to real-world operating conditions: current limit, voltage limit. Long-term reliability means better up-time, fewer service calls, and more satisfied and successful customers.


Download the brochure to view a more detailed specification chart, and then call Wavelength’s sales engineers so we can help you choose the right driver for your application.

Free, effective, and responsive technical support is available to simplify integration of Wavelength products into your OEM design. Standard product can be easily modified to meet your application requirements.

Supply Range: +4.5 to +5.5 VDC
Temperature Control Output Current: up to ±5.0 A, nominal
Maximum Output Voltage: 5.5 VDC
Temperature Stability: 0.001°C (10 kΩ thermistor at 25°C) over one hour
Temperature Stability: 0.002°C (10 kΩ thermistor at 25°C) over 24 hours
Maximum Power Dissipation: 22.5 W
22-pin PCB Mount size: 1.28″ x 1.3″ x 0.31″ (32.5mm x 33.0mm x 7.9mm)


  • High Efficiency PWM circuitry
  • Current and Voltage Limits
  • Temperature-in-Range signal
  • TEC Voltage and Current Monitors
  • Remote Enable input
  • Simple to use evaluation board available
  • OEM board loaded with components for your specific application is available

Top View and Pinout


Related FAQs

FAQ1007: What limits the temperature control range of a temperature controller?
FAQ1009: Why won't my temperature controller settle my load to temperature?
FAQ1010: Why does it take so long to settle to the setpoint temperature?
FAQ1011: Why won't my load stabilize to your temperature controller specification?
FAQ1012: Why is my load heating when it should be cooling?
FAQ1014: What DC power supplies do you recommend to achieve the stability specifications listed in your manuals?
FAQ1015: Should I use a switching power supply for my application?
FAQ1016: How do I view and print your manuals on-line?
FAQ1017: An empty screen appears when I try opening a PDF manual. What does this mean?
FAQ1019: Which address do I use to remit payment or a purchase order?
FAQ1022: Where do I send my unit for repair or calibration?
FAQ1085: Do the temperature controllers always provide full current to the driven element (a TEC or Peltier device, or resistive heater) when the actual temperature does not equal the set point temperature?
FAQ1117: The temperature of my resistive heater is slow to stabilize and is not within specification.
FAQ1120: What does the Compliance Voltage specification in temperature controllers mean?
FAQ1128: What is the best way to wire a resistive heater to my temperature controller to gain compliance voltage?
FAQ1158: What software can I use for mechanical downloads?
FAQ1161: What are some important parameters to consider before purchasing a product?
FAQ1163: How does grounding the thermoelectric cooler cable on temperature controllers affect the noise level?
FAQ1169: At what temperature, and for how long can I solder the pins on the WLD, WTC, WTCP, and WHY products?
FAQ1170: Are the WLD, WTC, WTCP, and WHY products washable?
FAQ1171: How do I connect multiple drivers or controllers to a single power supply?


WEV300WEV300 Thermal Solution Kit$23
WEV301WEV301 Thermal Solution Kit with +5 V Fan$48
WEV302WEV302 Thermal Solution Kit with +12 V Fan$48


WTCPEVALEvaluation Board for WTCP5V5A PWM Temperature Controller$188
WTCP-OEMWTCP OEM System Integration Board for WTCP5V5A$22
WHS302WHS302 Heatsink for WXX Controllers$15
WTW002WTW002 Thermal Washer for Wxx Controllers$3
WXC303WXC303 +5 V Fan$31
WXC304WXC304 +12 V Fan$31
WXC305WXC305 Screw Kit$6
TCS10K5TCS10K5 10 kΩ Thermistor (0.5x3mm) Sold in 5-packs$97
TCS610TCS610 10 kΩ Thermistor (2x3mm) Sold in 10-packs$97
TCS620TCS620 20 kΩ Thermistor (2x3mm) Sold in 10-packs$97
TCS650TCS650 50 kΩ Thermistor (2x3mm) Sold in 10-packs$97
TCS651TCS651 100 kΩ Thermistor (2x3mm) Sold in 10-packs$97