10 V at ±0.2% — the parametric anchor
The LM4040B10IDCKR is a fixed 10 V shunt reference from the LM4040 family, trimmed to ±0.2% initial tolerance. Output is fixed at 10 V; there is no adjust pin. The shunt architecture means it behaves like a precision Zener — you set the bias current with a single resistor from the supply rail, and the reference sinks the current needed to hold 10 V across its terminals.
Bias current and load range
The device regulates with a cathode current as low as 125 µA and can sink up to 15 mA continuous. That 125 µA minimum is the floor for the bias resistor calculation: pick R such that (Vin - 10 V) / R stays above 125 µA at the lowest supply and highest load current. The 15 mA ceiling sets the maximum load the reference can drive before dropping out of regulation.
Industrial temperature and SC-70 footprint
The temperature coefficient is 100 ppm/°C typical. The SC-70-5 (SOT-353) package is a 5-pin body.
The base product number is LM4040, a long-running TI family with broad second-source compatibility across the 10 V shunt reference space.