Voltage References

Voltage references are electronic devices that provide a fixed voltage. They provide a constant voltage regardless of external factors like the load on the device or fluctuations in the power supply.


Voltage references have different characteristics depending on their purpose. Voltage references used in laboratory applications are designed to have extremely high precision and accuracy, whereas those used as regulators for computer power supplies are much cheaper but less precise. 


Types of voltage references

There are many different kinds of voltage references, generally categorised by type, tolerance, rated voltage, reference voltage and rated current. The most common tolerances are ±2%, ±1% and ±0.5%, but voltage references are available even up to ±40%. 


What are voltage references used for? 

Voltage references can be used for a variety of different precision measurement and control systems such as power supplies in personal computers and analog-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. 


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Description Price Nominal Voltage Package Type Reference Type Initial Accuracy Mounting Type Topology Maximum Output Current Maximum Input Voltage Minimum Output Voltage Maximum Output Voltage Pin Count Line Regulation Load Regulation Dimensions
RS Stock No. 398-849
Mfr. Part No.TS431BCX RFG
MYR0.354
Each (In a Pack of 50)
units
2.5 - 36V SOT-23 Adjustable 0.5% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3.05 x 1.4 x 0.95mm
RS Stock No. 169-8955
Mfr. Part No.TS431BCX RFG
MYR0.451
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable 0.5% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3.05 x 1.4 x 0.95mm
RS Stock No. 169-8956
Mfr. Part No.TS431ACX RFG
MYR0.386
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable 1% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3.05 x 1.4 x 0.95mm
RS Stock No. 398-859
Mfr. Part No.TS431ACX RFG
MYR0.683
Each (In a Pack of 50)
units
2.5 - 36V SOT-23 Adjustable 1% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3.05 x 1.4 x 0.95mm