1. General Information & Product Description:

️· Product: Series of Peltier Modules (Thermoelectric Coolers - TECs) - CP85H Series.
️· Manufacturer: CUI (Cardinal Thermoelectric Inc.)
️· Function: These modules use the Peltier effect to create a temperature difference. One side gets cold, the other gets hot when DC voltage is applied. They're used for cooling, heating, and temperature control.

2. Key Specifications & Features (General Across the Series):

️· Revision History: Updated on 09/25/2017. (Important to note as specs can change).
️· Warranty: One (1) year limited warranty from CUI.
️· Important Restriction: *Not* suitable for critical components in life-support devices or systems.

3. Specific Model Variations & Likely Specs (Based on Performance Charts):

️· CP853345H and CP854345H: These models are the larger modules capable of significantly greater cooling or heating. Charts suggest a higher maximum temperature difference (ΔT) than the CP852345H and CP851345H.
️· CP851345H, CP852345H, CP853345H, CP854345H: Represent variations in size/power within the series. While exact numerical specs are not directly listed, the provided performance charts (temperature difference vs. current) provide valuable insight into their capabilities.
️· Performance Charts: Show how the temperature difference (ΔT) achieved depends on the input current. The larger the current, the greater the ΔT (up to a point). Performance is also affected by the hot side temperature.

4. Important Notes & Cautions:

️· Performance is Temperature-Dependent: The achievable temperature difference is affected by the temperature of the "hot side" of the module. The colder the hot side, the greater the temperature difference achieved.
️· Heat Sink Requirement: A heat sink is *essential* on the hot side of the module to dissipate the heat generated. Without a heat sink, the hot side temperature will rise, reducing cooling performance and potentially damaging the module.
️· Polarity: Reversing the polarity of the voltage applied will reverse the cooling/heating effect (cold side becomes hot, and vice-versa).
️· Mechanical Stress: Avoid applying excessive mechanical stress to the module.
️· Moisture: Protect from moisture.



Summary Table of Models (Estimated/Based on Charts):

Model	Size (Estimate)	Approx. Max ΔT (at Max Current, Hot Side Temp Dependent)	Likely Applications
CP851345H	Smallest	~ 50-60°C	Small electronics cooling, portable coolers
CP852345H	Small	~ 60-70°C	General cooling/heating
CP853345H	Medium	~ 70-80°C	Larger electronics, more powerful cooling
CP854345H	Largest	~ 80-90°C	High-performance cooling, more demanding applications

Disclaimer: The data in the table are estimates derived from the provided charts and are not exact specifications. Always consult the official datasheet (available from CUI) for precise values.