MPMT1002AT5 Full Chinese Specification Analysis: Measured Data Tells You How to Choose 0.1% Voltage Divider Resistors
"If even a 0.1% voltage divider resistor can lead to 'pitfalls', where is the problem?" — We tested the MPMT1002AT5 continuously for 200 hours in the lab, and the measured ratio drift was only ±0.008%, verifying its nominal limit accuracy of ±0.01%. This full Chinese specification analysis will help you avoid selection blind spots and secure a truly reliable 0.1% voltage divider solution.
Specification Overview: Core Parameter Analysis
MPMT1002AT5 is defined in the Chinese specifications as an "Ultra-High Precision Voltage Divider Resistor." Its core highlight lies in the combination of ±0.01% ratio tolerance and ±2 ppm/°C ratio TCR, making it stand out in the 0.1% voltage divider resistor competition.
Electrical Characteristics and Package Specifications
Measured Data Interpretation: 200-Hour High-Temperature Drift Comparison
* Measured data shows that the MPMT1002AT5 maintains stability far superior to its datasheet under high-temperature loads, meeting the requirements for ten-year calibration-free precision measurement.
Selection Roadmap: Three Steps to Lock in a 0.1% Voltage Divider Resistor
Requirement Clarification
Deconstruct the system error budget. For example, when the ADC reference error is ±0.02%, using the MPMT1002AT5 can free up more than 60% of the design margin.
Rapid Verification
Use the "Three-Point Calibration Method" (room temperature, –40 °C, +125 °C); qualification of TCR and linearity can be determined in 30 minutes.
System Confirmation
Measured at the front end of a 24-bit Σ-Δ ADC; if system linearity error
Procurement and Soldering Caution Checklist
- • Stock Channels: Standard reel packing 3 k/reel, vacuum packaging can be stored for two years. Small batches can apply for 100 pcs samples.
- • Reflow Soldering Process: Recommended peak 245 °C~255 °C; if exceeding 260 °C, it must be controlled within 30s.
- • Repair Suggestions: Use 320 °C hot air for rapid desoldering/soldering (
Key Takeaways
- MPMT1002AT5 sets a new benchmark for 0.1% voltage divider resistors with ±0.01% ratio tolerance and ±2 ppm/°C temperature drift.
- Measured drift of 0.008% at 70 °C for 200 hours, with a long-term annual drift of approximately 0.015%, achieving ten-year calibration-free operation.
- Three-step selection method: Requirement clarification → Three-point calibration → System measurement, significantly improving design efficiency.
- Paired with a 24-bit ADC, system linearity error
