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. 169-5610
Mfr. Part No.LM4040D25IDBZR
PHP14.54
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 8 mV 2.92 x 1.3 x 1mm
RS Stock No. 714-7822
Mfr. Part No.TL431AIZT
PHP14.23
Each (In a Pack of 20)
units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.7 x 3.7 x 4.4mm
RS Stock No. 761-7989
Mfr. Part No.LT1029CZ#PBF
PHP217.23
Each
units
5V TO-92 Fixed ±0.2 % Through Hole Shunt 10mA - 4.95 V 5.05 V 3 - - 4.572 x 3.556 x 4.572mm
RS Stock No. 809-5374
Mfr. Part No.TL431AILP
PHP16.316
Each (In a Pack of 5)
units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA - - 36 V 3 - - 5.21 x 4.19 x 5.34mm
RS Stock No. 158-5251
Mfr. Part No.AD586BRZ
PHP679.35
Each (In a Tube of 98)
units
5V SOIC Fixed ±0.05 % Surface Mount Series 10mA 36 V 4.998 V 5.003 V 8 100 μV/V 400 μV/mA 5 x 4 x 1.5mm
RS Stock No. 111-1104
Mfr. Part No.REF02CPZ
PHP175.458
Each (In a Tube of 50)
units
5V PDIP Fixed ±1.0 % Through Hole Series 8mA 40 V 4.95 V 5.05 V 8 150 ppm/V 150 ppm/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 526-981
Mfr. Part No.TL431AIDBZT
PHP26.926
Each (In a Pack of 25)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 124-2435
Mfr. Part No.TL431BQDBZR,215
BrandNexperia
PHP4.845
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 x 1.4 x 1mm
RS Stock No. 814-3758
Mfr. Part No.REF3330AIDBZT
PHP88.576
Each (In a Pack of 5)
units
3V SOT-23 Fixed ±0.15 % Surface Mount Series 30mA 5.5 V - - 3 30 ppm/V 20 ppm/V 3.04 x 1.4 x 1.02mm
RS Stock No. 526-313
Mfr. Part No.TL431ACDR
PHP11.164
Each (In a Pack of 25)
units
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.91 x 1.58mm
RS Stock No. 121-8848
Mfr. Part No.LM431BIM3/NOPB
PHP14.07
Each (On a Reel of 1000)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 913-0712
Mfr. Part No.REF195ESZ
PHP220.548
Each (In a Tube of 98)
units
5V SOIC Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.998 V 5.002 V 8 4 ppm/V 4 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 912-8740
Mfr. Part No.AD586LRZ
PHP532.88
Each (In a Tube of 98)
units
5V SOIC Fixed ±0.05 % Surface Mount Series 10mA 36 V 4.998 V 5.003 V 8 100 μV/V 400 μV/mA 5 x 4 x 1.5mm
RS Stock No. 522-9076
Mfr. Part No.REF02CPZ
PHP216.83
Each
units
5V PDIP Fixed ±1.0 % Through Hole Series 8mA 40 V 4.95 V 5.05 V 8 150 ppm/V 150 ppm/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 919-9171
Mfr. Part No.LT1790AIS6-5TRMPBF
PHP273.981
Each (On a Reel of 500)
units
5V TSOT-23 Fixed ±0.05 % Surface Mount Series - 20 V 4.998 V 5.003 V 6 220 ppm/V 250 ppm/V, 300 ppm/V 2.9 x 1.75 x 0.9mm
RS Stock No. 121-9053
Mfr. Part No.REF5050ID
PHP276.244
Each (In a Tube of 75)
units
5V SOIC Fixed ±0.05 % Surface Mount Series 10mA 18 V - - 8 1 ppm/V 30 ppm/mA 4.9 x 3.91 x 1.58mm
RS Stock No. 145-7446
Mfr. Part No.LT1431IS8#PBF
PHP181.399
Each (In a Tube of 100)
units
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt - 40 V - - 8 - - 5.004 x 3.988 x 1.498mm
RS Stock No. 864-7878
Mfr. Part No.TL431ACDR2G
PHP13.959
Each (In a Pack of 50)
units
2.5 - 36V SOIC Programmable ±1.0 % Surface Mount Shunt 100mA - 2.44 V 36 V 8 53 mV 25 mV 5 x 4 x 1.5mm
RS Stock No. 145-0411
Mfr. Part No.TL432BIDBZT
PHP25.673
Each (On a Reel of 250)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 823-1801
Mfr. Part No.ZR40402F25TA
PHP29.30
Each (In a Pack of 50)
units
2.5V SOT-23 Fixed ±2.0 % Surface Mount Series - - - - 3 - - 3.04 x 1.4 x 1.02mm
Related Products
Precison Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precison Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.