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. 145-8772
Mfr. Part No.TS2431AILT
kr 1,182
Each (On a Reel of 3000)
Units
2.5 - 24V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 25 V 2.5 V 24 V 3 - - 2.9 x 1.3 x 0.95mm
RS Stock No. 168-6826
Mfr. Part No.TL431CDT
kr 0,977
Each (On a Reel of 2500)
Units
2.5 - 36V SOIC Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.9 x 1.25mm
RS Stock No. 795-7017
Mfr. Part No.TS431ILT
kr 4,516
Each (In a Pack of 10)
Units
1.24 - 6V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 30mA - 1.215 V 1.265 V 5 - - 3 x 1.75 x 1.3mm
RS Stock No. 168-6078
Mfr. Part No.TL1431ACZ
kr 1,093
Each (In a Bag of 2500)
Units
2.5 - 36V TO-92 Adjustable ±0.25 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.7 x 3.7 x 4.4mm
RS Stock No. 795-8880
Mfr. Part No.TS3431CILT
kr 4,195
Each (On a Tape of 25)
Units
1.24 - 24V SOT-23 Adjustable ±0.25 % Surface Mount Shunt 100mA - 1.24 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 795-7048
Mfr. Part No.TS4040DILT-2.5
kr 4,275
Each (On a Tape of 25)
Units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - 2.475 V 2.525 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 795-8943
Mfr. Part No.TS2431ILT
kr 0,90
Each (On a Tape of 50)
Units
2.5 - 24V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA - 2.5 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 877-3052
Mfr. Part No.TS431AILT
kr 1,157
Each (In a Pack of 20)
Units
1.24 - 6V SOT-23 Adjustable ±2.0 % Surface Mount Shunt - - 1.228 V 1.252 V 5 - - 3 x 1.75 x 1.3mm
RS Stock No. 178-5184
Mfr. Part No.TL431AIDT
kr 0,967
Each (On a Reel of 2500)
Units
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.9 x 1.25mm
RS Stock No. 168-7272
Mfr. Part No.TL1431AIDT
kr 1,138
Each (On a Reel of 2500)
Units
2.5 - 36V SOIC Adjustable ±0.25 % Surface Mount Shunt 100mA - 2.5 V 36 V 8 - - 5 x 4 x 1.5mm
RS Stock No. 322-3492
Mfr. Part No.TL1431ACZ
kr 1,32
Each
Units
2.5 - 36V TO-92 Adjustable ±0.25 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.7 x 3.7 x 4.4mm
RS Stock No. 168-6901
Mfr. Part No.TL431ACZ-AP
kr 0,967
Each (On a Tape of 2000)
Units
2.5 - 36V TO-92AP Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 5 x 4 x 5mm
RS Stock No. 165-5278
Mfr. Part No.TS431AILT
kr 1,204
Each (On a Reel of 3000)
Units
1.24 - 6V SOT-23 Adjustable ±2.0 % Surface Mount Shunt - - 1.228 V 1.252 V 5 - - 3 x 1.75 x 1.3mm
RS Stock No. 714-1105
Mfr. Part No.TL431ACDT
kr 0,408
Each (In a Pack of 20)
Units
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt - - - - 8 - - -
RS Stock No. 686-4765
Mfr. Part No.TS2431AILT
kr 3,011
Each (In a Pack of 25)
Units
2.5 - 24V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 25 V 2.5 V 24 V 3 - - 2.9 x 1.3 x 0.95mm
RS Stock No. 165-6770
Mfr. Part No.TS4040DILT-2.5
kr 1,935
Each (On a Reel of 3000)
Units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - 2.475 V 2.525 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 795-8650
Mfr. Part No.TL1431AIDT
kr 1,133
Each (On a Tape of 10)
Units
2.5 - 36V SOIC Adjustable ±0.25 % Surface Mount Shunt 100mA - 2.5 V 36 V 8 - - 5 x 4 x 1.5mm
RS Stock No. 165-8207
Mfr. Part No.TL1431ACL5T
kr 2,904
Each (On a Reel of 3000)
Units
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA 36 V 2.5 V 36 V 5 - - 3.05 x 1.75 x 1.3mm
RS Stock No. 714-7831
Mfr. Part No.TL431CZ
kr 2,365
Each (In a Pack of 50)
Units
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.7 x 3.7 x 4.4mm
RS Stock No. 165-6542
Mfr. Part No.TS2431ILT
kr 0,882
Each (On a Reel of 3000)
Units
2.5 - 24V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA - 2.5 V 24 V 3 - - 3.04 x 1.4 x 1.02mm