The 30×6×3.25mm unit is a miniature, elongated, single-stage TEC (model TEC1-03102) designed for compact spaces, low-to-medium power applications, and precision temperature control scenarios. Its key advantages include an ultra-thin, slender profile, low voltage requirements, and excellent cost-effectiveness.
Peltier Cooler‘s Definition
The 30×6×3.25mm unit is a miniature, elongated, single-stage TEC (model TEC1-03102) designed for compact spaces, low-to-medium power applications, and precision temperature control scenarios. Its key advantages include an ultra-thin, slender profile, low voltage requirements, and excellent cost-effectiveness.
Element Peltier Drawing

Product Paramater of Peltier Module
| Item | 25°C | 50°C | Description |
| Hot side temperature Th= | 25°C | 50°C | Refers to the hot side temperature during operation or testing |
| Maximum cooling capacity Qcmax (W) | 4.6 | 4.9 | Cooling capacity when ΔT=0 and I=Imax |
| Maximum temperature difference ΔTmax (°C) | 67.0 | 71.0 | Temperature difference when Qc=0 and I=Imax |
| Maximum current Imax (A) | 2.2 | 2.2 | Current when ΔT=ΔTmax or Qc=Qcmax |
| Maximum voltage Umax (V) | 3.8 | 4.1 | Voltage when ΔT=ΔTmax and I=Imax |
| AC resistance (1KHz) (Ω) | 1.37 | 1.51 | AC resistance of the device at the specified temperature |
| Performance tolerance | ±12% | Refers to the outgoing quality control standard of the product |
Key Advantages of TEC Cooler
1. Miniaturized and easy to integrate: 3.25mm ultra-thin profile; elongated design suitable for linear or narrow heat sources; weight <5g.
2. No mechanical movement: No noise, no wear, and no refrigerant; service life of 5+ years (under normal operating conditions).
3. Low-voltage safety: 3.8V low voltage, compatible with USB and lithium-ion battery power sources; ideal for portable devices.
4. Bidirectional Temperature Control: Cooling when powered forward, heating when powered in reverse, with a temperature control accuracy of **±0.5°C** and fast response.
5. High Reliability: Ceramic substrate provides insulation and moisture resistance, suitable for environments ranging from **-20°C to 80°C**
Product Application of Element Peltier
1. Digital Cooling: Cooling back covers for smartphones, LED chips, micro-projectors, temperature control for portable digital modules
2. Beauty and Personal Care: Ice-point hair removal devices, eye cooling devices, small facial cooling appliances
3. Precision Optoelectronics: Temperature control for small optical modules, infrared sensors, and micro-camera image sensors
4. Portable Temperature-Controlled Refrigeration: Mini portable coolers, small in-car food storage containers
5. Small Appliances / Industrial: Micro dehumidification modules, small-area temperature control for instruments, temperature control for 3D printer nozzles
6. Smart Wearables: Temperature control for specific areas of fitness bands and watches
Peltier Cooling Element's Performance Curve

The 40×40mm, 4A TC1-12704 thermoelectric cooler, with core parameters of 12V rated voltage and a maximum temperature difference of approximately 67–68℃, is mainly used in three scenarios in medical equipment