Package A: white, TL431 board*1;
Package B: black, resistor-capacitor board*1;
Package C: Gray, two boards together
TL431 Voltage Reference Board
Production materials:
Brand new original STMicroelectronics TL431;
Disassembled LT1001 precision op amp;
Four 0.1%, 25PPM 10K precision chip resistors;
Jianghai and ELNA electrolytic capacitors, TDK104 capacitors;
Yageo copper foot resistor;
Brand all-copper terminal posts, the test leads can be inserted directly;
Materials for making resistor capacitor boards:
The resistance benchmarks are all precision chip resistors of 0.1% and 25PPM (as shown in Figure 3).
The capacitors are ceramic capacitors, CBB capacitors, correction capacitors, polyester capacitors, monolithic capacitors, Japan ELNA electrolytic capacitors
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On 27-Apr-22 at 09:02:53 BST, seller added the following information: