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. 535-9751
Mfr. Part No.LM431BIM3/NOPB
SGD0.96
Each (In a Pack of 5)
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. 166-3619
Mfr. Part No.KA431AZBU
SGD0.081
Each (In a Bag of 10000)
units
2.5 - 36V TO-92 Programmable ±1.0 % Through Hole Shunt - - - 36 V 3 - - 5.2 x 4.19 x 5.33mm
RS Stock No. 857-979
Mfr. Part No.TL431CD
SGD0.55
Each
units
2.5 - 36V SOIC Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.91 x 1.58mm
RS Stock No. 411-589
Mfr. Part No.AD581JH
SGD30.09
Each
units
10V TO-5 Fixed ±0.3 % Through Hole Series 10mA 40 V - - 3 0.005 %/V 500 μV/mA 9.4 x 9.4 x 4.7mm
RS Stock No. 809-5374
Mfr. Part No.TL431AILP
SGD0.576
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. 527-984
Mfr. Part No.TL431AILPE3
SGD0.472
Each (In a Pack of 25)
units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 912-9882
Mfr. Part No.ADR435BRMZ
SGD10.898
Each (In a Tube of 50)
units
4.096V MSOP Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.998 V 5.002 V 8 20 ppm/V 15 ppm/mA 3.2 x 3.2 x 0.95mm
RS Stock No. 162-5926
Mfr. Part No.TLV431ACDBZR
SGD0.417
Each (On a Reel of 3000)
units
1.24 - 6V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 15mA - 1.24 V 6 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 739-0448
Mfr. Part No.LM336Z25
SGD0.534
Each (In a Pack of 5)
units
2.5V TO-92 Fixed ±1.0 % Through Hole Shunt - - 2.44 V 2.54 V 3 - 10 mV 4.58 x 3.86 x 4.58mm
RS Stock No. 122-2409
Mfr. Part No.ZR40402F25TA
SGD0.425
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±2.0 % Surface Mount Series - - - - 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 535-9329
Mfr. Part No.LM336BM-5.0/NOPB
SGD2.146
Each (In a Pack of 5)
units
5V SOIC Fixed ±1.0 % Surface Mount Shunt 10mA - 4.9 V 5.1 V 8 - 20 mV 4.9 x 3.9 x 1.45mm
RS Stock No. 166-2589
Mfr. Part No.LM336Z25
SGD0.133
Each (In a Bag of 10000)
units
2.5V TO-92 Programmable ±1.0 % Through Hole Shunt 15 (Reverse)mA - - - 3 - - 5.2 x 4.19 x 5.33mm
RS Stock No. 404-285
Mfr. Part No.REF5050AID
SGD5.16
Each
units
5V SOIC Fixed ±0.05 % Surface Mount Series 10mA 18 V - - 8 1 ppm/V 50 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 121-8468
Mfr. Part No.TL431ILP
SGD0.215
Each (In a Box of 1000)
units
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 461-9529
Mfr. Part No.REF3012AIDBZT
SGD2.362
Each (In a Pack of 5)
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. 761-5909
Mfr. Part No.LM4041BIM3-1.2/NOPB
SGD1.98
Each (On a Tape of 5)
units
1.225V SOT-23 Fixed ±0.1 % Surface Mount Shunt 12mA - - 1.2 V 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 660-7345
Mfr. Part No.REF1112AIDBZT
SGD3.734
Each (In a Pack of 5)
units
1.25V SOT-23 Fixed ±0.2 % Surface Mount Shunt 5mA - 1.248 V 1.253 V 3 - 100 ppm/mA 2.92 x 1.3 x 1mm
RS Stock No. 912-7220
Mfr. Part No.AD587JRZ
SGD9.006
Each (In a Tube of 98)
units
10V SOIC Fixed ±0.1 % Surface Mount Series 10mA 36 V 9.99 V 10.01 V 8 100 μV/V 100 μV/mA 5 x 4 x 1.5mm
RS Stock No. 523-7976
Mfr. Part No.AD780ARZ
SGD12.23
Each (In a Tube of 98)
units
2.5 V, 3 V SOIC Programmable ±0.2 % Surface Mount Series/Shunt 10mA 36 V 2.495 V, 2.995 V 2 V, 3 V 8 10 μV/V 75 μV/mA 5 x 4 x 1.5mm
RS Stock No. 797-4848
Mfr. Part No.TL431QDBZR,215
BrandNexperia
SGD0.42
Each (On a Tape of 50)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
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%.