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. 163-0321
Mfr. Part No.TL431ACDR2G
SGD0.182
Each (On a Reel of 2500)
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. 761-5946
Mfr. Part No.LM431BCM3/NOPB
SGD0.677
Each (In a Pack of 10)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA - 2.47 V 2.52 V 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 796-8029
Mfr. Part No.LM285D-1-2
SGD0.878
Each (In a Pack of 5)
units
1.235V SOIC Fixed ±1.0 % Surface Mount Shunt - - - - 8 - 30 mV 5 x 4 x 1.5mm
RS Stock No. 145-6994
Mfr. Part No.LM285D-1-2
SGD0.41
Each (In a Tube of 75)
units
1.235V SOIC Fixed ±1.0 % Surface Mount Shunt - - - - 8 - 30 mV 5 x 4 x 1.5mm
RS Stock No. 121-8695
Mfr. Part No.LM336Z-5.0/NOPB
SGD0.458
Each (In a Box of 1800)
units
5V TO-92 Fixed ±1.0 % Through Hole Shunt 10mA - 4.8 V 5.2 V 3 - 20 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 463-509
Mfr. Part No.LM285Z-1.2G
SGD0.661
Each (In a Pack of 10)
units
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt 20mA - 1.223 V 1.247 V 3 - 10 mV 5.2 x 4.19 x 5.33mm
RS Stock No. 709-1545
Mfr. Part No.AD1582BRTZ-REEL7
SGD3.078
Each (In a Pack of 5)
units
2.5V SOT-23 Fixed ±0.08 % Surface Mount Series 5mA 12 V 2.498 V 2.502 V 3 25 μV/V 3.5 mV/mA 2.9 x 1.3 x 1.02mm
RS Stock No. 779-8892
Mfr. Part No.LT1004CS8-2.5#PBF
SGD3.83
Each (In a Pack of 2)
units
2.5V SOIC Fixed ±0.8 % Surface Mount Shunt 20mA - - 2.5 V 8 - - 5.004 x 3.988 x 1.498mm
RS Stock No. 921-0717
Mfr. Part No.AZ431LANTR-G1
SGD0.178
Each (In a Pack of 50)
units
1.24V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 18 V 1.24 V 18 V 3 - - 3 x 1.4 x 1.1mm
RS Stock No. 155-9368
Mfr. Part No.LT1460EIS8-5#PBF
SGD5.273
Each (In a Tube of 100)
units
5V SOIC Fixed ±0.125 % Surface Mount Series 40mA 30 V 4.99 V 5 V 8 1000 ppm/V 4000 ppm/mA 5 x 3.98 x 1.49mm
RS Stock No. 661-9379
Mfr. Part No.LM4040D30IDBZR
SGD0.878
Each (In a Pack of 5)
units
3V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 8 mV 2.92 x 1.3 x 1mm
RS Stock No. 548-5456
Mfr. Part No.UPC1944T-AZ
SGD3.65
Each
units
1.26 - 24V SOT-89 Adjustable ±2.4 % Surface Mount Shunt 30mA 25 V - - 3 - - 4.5 x 2.5 x 1.5mm
RS Stock No. 178-8860
Mfr. Part No.LM336BM-2.5/NOPB
SGD2.566
Each (In a Tube of 95)
units
2.5V SOIC Fixed ±2.0 % Surface Mount Shunt 10mA - 2.44 V 2.54 V 8 - 10 mV 4.9 x 3.9 x 1.45mm
RS Stock No. 101-8305
Mfr. Part No.LM285Z-1.2G
SGD0.421
Each (In a Bag of 2000)
units
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt 20mA - 1.223 V 1.247 V 3 - 10 mV 5.2 x 4.19 x 5.33mm
RS Stock No. 158-1979
Mfr. Part No.AD1582BRTZ-REEL7
SGD2.138
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±0.08 % Surface Mount Series 5mA 12 V 2.498 V 2.502 V 3 25 μV/V 3.5 mV/mA 2.9 x 1.3 x 1.02mm
RS Stock No. 162-6258
Mfr. Part No.LM431BCM3/NOPB
SGD0.40
Each (On a Reel of 1000)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA - 2.47 V 2.52 V 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 145-6903
Mfr. Part No.REF3012AIDBZT
SGD1.412
Each (On a Reel of 250)
units
1.25V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 1.248 V 1.253 V 3 190 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS Stock No. 163-0322
Mfr. Part No.TL431ACLPG
SGD0.294
Each (In a Bag of 2000)
units
2.5 - 36V TO-92 Programmable ±1.0 % Through Hole Shunt 100mA - - 36 V 3 53 mV 25 mV 5.2 x 4.19 x 5.33mm
RS Stock No. 159-7585
Mfr. Part No.ADR421BRZ-REEL7
SGD12.129
Each (On a Reel of 1000)
units
2.5V SOIC Fixed ±0.04 % Surface Mount Series 10mA 15 V 2.499 V 2.501 V 8 35 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 121-8848
Mfr. Part No.LM431BIM3/NOPB
SGD0.359
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
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%.
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%.
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%.