What is the difference between alloy resistance and SMT resistance?

SMT resistors are a large category, indicating that packaging is in the form of surface mount packaging.
Alloy resistance is a type of resistance that uses alloys as the current medium, generally characterized by low resistance value, high precision, low temperature coefficient, resistance to impact current, and high power. This type of resistor is commonly used in various electronic products, mainly for current sampling or short circuit protection. The mainstream alloy resistor is the SMT type alloy resistor. The main material of the alloy is copper, along with other materials, it becomes constantan, manganese copper, etc. There are many other auxiliary materials, but the main performance is determined by the alloy material itself. The SMT resistors we often refer to in our daily lives generally refer to ordinary types of SMT thick film and thin film resistors. Two concepts are classified from different levels.
Thick films are classified from the perspective of materials and processes, relative to thin films;
A resistor can be both thick film and SMT, using thick film printing technology to make SMT resistors. Of course, thick film printing can also be used to make thick film hybrid circuits, and SMT resistors can also be made using thin film technology.
In terms of price: Alloy resistors are generally much more expensive than SMT thick film resistors, ranging from 0.1 to 0.2 yuan. Of course, the larger the packaging, the more precise the precision, and the more expensive the price. The price of thick film resistors varies from a few yuan/kpcs to several tens of yuan/kpcs, depending on packaging and accuracy.