TEC1-12703:External dimensions: 40 * 40 * 4.0mm ± 0.1 element pairs Wire specification: lead length 310mm ± 5mm RV standard wire single end 5mm tin platedInternal resistance value: 4.0~4.3 Ω (ambient temperature 23 ± 1 ℃, 1kHz Ac test)Large temperature difference: △ Tmax (Qc=0) above 60 ℃.Working current: Imax=12 (when starting at rated voltage)Rated voltage: DC12V (Vmax: 15.5V)Cooling power: Qcmax 27WAssembly pressure: 85N/cm2Working environment: Temperature range -55 ℃~83 ℃ (excessive environmental temperature drop directly affects refrigeration efficiency)Packaging process: standard 704 silicone rubber sealing aroundPackaging standard: foam box, storage condition, ambient temperature - 10 ℃~40 ℃Storage conditions: -40~60 ℃TEC1-12704:Chip model: TEC1-127External dimensions: 40 * 40 * 4.2mm, number of component pairs 127Wire specification: lead length 100 ± 5mm RV standard wire with single end 5mm tin platedInternal resistance value: 3.0~3.3 Ω (ambient temperature 23 ± 1 ℃, 1kHz Ac test)Large temperature difference: △ Tmax (Qc=0) above 60 ℃.Working current: Imax=12 (when starting at rated voltage)Rated voltage: DC12V (Vmax: 15.5V)Cooling power: Qcmax 36WAssembly pressure: 85N/cm2Working environment: Temperature range -55 ℃~83 ℃ (excessive ambient temperature will directly affect refrigeration efficiency)Packaging process: standard 704 silicone rubber sealing aroundPackaging standard: foam box, storage condition, ambient temperature - 10 ℃~40 ℃Storage conditions: -40~60 ℃TEC1-12705:Chip model: TEC1-12705External dimensions: 40 * 40 * 3.8mm, number of component pairs 127Wire specification: lead length 100 ± 5mm RV standard wire with single end 5mm tin platedInternal resistance value: 2.4~2.7 Ω (ambient temperature 23 ± 1 ℃, 1kHz Ac test)Large temperature difference: △ Tmax (Qc=0) above 61 ℃.Working current: Imax=5 (when starting at rated voltage)Rated voltage: DC12V (Vmax: 15.5V)Cooling power: Qcmax 45WAssembly pressure: 85N/cm2Working environment: Temperature range -55 ℃~83 ℃ (excessive ambient temperature will directly affect refrigeration efficiency)Packaging process: standard 704 silicone rubber sealing aroundPackaging standard: foam box, storage condition, ambient temperature - 10 ℃~40 ℃Storage conditions: -40~60 ℃TEC1-12706:Chip model: TEC1-12706External dimensions: 40 * 40 * 3.75mmInternal resistance value: 2.1~2.4 Ω (ambient temperature 23 ± 1 ℃, 1kHz Ac test)Large temperature difference: △ Tmax (Qc=0) above 59 ℃.Working current: Imax=4.3-4.6A (at rated 12V)Rated voltage: 12V (Vmax: 15V starting current 5.8A)Cooling power: Qcmax 60-72WWorking environment: Temperature range -55 ℃~83 ℃ (excessive environmental temperature drop directly affects refrigeration efficiency)TEC1-12708:Chip model: TEC1-12708External dimensions: 40 * 40 * 3.5mm, number of component pairs 127Wire specification: Lead length 300 ± 8mm RV standard wire with single end 5mm tin platedInternal resistance value: 1.5~1.7 Ω (ambient temperature 23 ± 1 ℃, 1kHz Ac test)Large temperature difference: △ Tmax (Qc=0) above 60 ℃.Working current: Imax=8A (when starting at rated voltage)Rated voltage: DC12V (Vmax: 15.5V)Cooling power: Qcmax 77WAssembly pressure: 85N/cm2Working environment: Temperature range -55 ℃~83 ℃ (excessive ambient temperature will directly affect refrigeration efficiency)Packaging process: standard 704 silicone rubber sealing aroundPackaging standard: foam box, storage condition, ambient temperature - 10 ℃~40 ℃Storage conditions: -40~60 ℃