1. AS431ANTR-E1 Substitution Conclusion Overall substitution feasibility is low and requires careful evaluation. While its core parameters such as reference voltage (2.5V), tolerance (±0.5%), and maximum operating voltage (36V) are highly compatible with the TL432BQDBZR (2.495V), two critical differences exist. First, its typical cathode operating current is 1mA, significantly higher than the original part’s 80µA. Under the same reference voltage, this will lead to notably increased self-power consumption and heat generation, which may render it unsuitable for low-power designs or applications sensitive to thermal management. Second, it specifies a typical temperature coefficient of 20ppm/°C, whereas the original part does not explicitly define this parameter. Although this provides documented temperature drift performance, in systems where the original part’s actual drift characteristics are unknown, it may introduce additional accuracy deviation risks.