TEC1-12703 Semiconductor thermoelectric cooler oler 

Part number: TEC1-12703
Dimension: 40 * 40  mm,  components logarithmic: 127 * 4.3
Wire specifications: 310 mm + / - 5 mm long lead the RV standard tin wire single head 5 mm
Internal resistance value: 4.0 ~ 4.3 Ω (23 + / - 1 ℃, environment temperature 1 KHZ Ac test)
Maximum temperature difference: delta Tmax (Qc = 0) above 60 ℃.
Working current: Imax = 3 (15.5 V startup)
Rated voltage: DC12V (Vmax: 15.5 V)
Cooling power: Qcmax 27 w
The assembly pressure: 85 n/cm2
Working conditions: temperature range and 55 ℃ ~ 83 ℃ (high environmental temperature drop directly affect the cooling efficiency)
Encapsulation process: standard around 704 silicone rubber seal
Packing: bubble box packing, storing conditions - 10 ℃ to 40 ℃ ambient temperature
Storage conditions: - 40 ~ 60 ℃

Side with words is the cooling surface
No words on side is the radiating surface