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. 751-5228
Mfr. Part No.ZTL431AFTA
SGD0.226
Each (In a Pack of 50)
units
2.5V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 20 V 2.475 V 20 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 121-8838
Mfr. Part No.LM4040AIM3-3.0/NOPB
SGD1.259
Each (On a Reel of 1000)
units
3V SOT-23 Fixed ±0.1 % Surface Mount Shunt 15mA 37 V - - 3 - 6 mV 2.92 x 1.3 x 0.93mm
RS Stock No. 179-1626
Mfr. Part No.TL431CD
SGD0.364
Each (In a Tube of 75)
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. 738-5115
Mfr. Part No.ZRC400F01TA
SGD1.506
Each (In a Pack of 5)
units
4.096V SOT-23 Fixed ±1.0 % Surface Mount Shunt 5mA - 4.06 V 4.14 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 163-0440
Mfr. Part No.LM385D-1.2R2G
SGD0.465
Each (On a Reel of 2500)
units
1.235V SOIC Fixed ±2% Surface Mount Shunt - - 1.247 V 1.223 V 8 - - 5 x 4 x 1.5mm
RS Stock No. 806-4673
Mfr. Part No.LM336Z25X
SGD0.432
Each (In a Pack of 50)
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. 923-2405
Mfr. Part No.REF5050AID
SGD4.36
Each (In a Tube of 75)
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. 738-6358
Mfr. Part No.MCP1525-I/TO
BrandMicrochip
SGD1.07
Each (In a Pack of 5)
units
2.5V TO-92 Fixed ±1.0 % Through Hole Series 20mA 7 V - - 3 350 μV/V 1.3 mV/mA 4.71 x 3.62 x 4.62mm
RS Stock No. 412-642
Mfr. Part No.AD587JRZ
SGD11.05
Each
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. 661-9534
Mfr. Part No.TL431BIDBZT
SGD0.996
Each (In a Pack of 5)
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. 162-5926
Mfr. Part No.TLV431ACDBZR
SGD0.49
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. 121-8328
Mfr. Part No.LM336M-2.5/NOPB
SGD0.547
Each (In a Tube of 95)
units
2.5V SOIC Fixed ±4 % Surface Mount Shunt 10mA - 2.39 V 2.59 V 8 - 10 mV 4.9 x 3.9 x 1.45mm
RS Stock No. 184-1119
Mfr. Part No.TLV431ASNT1G
SGD0.227
Each (On a Reel of 3000)
units
1.24V TSOP Precision, Programmable ±1 %, ±2 % Surface Mount Series/Shunt 20mA 16 V 1.24 V 16 V 5 - - 3.15 x 1.65 x 1mm
RS Stock No. 145-5709
Mfr. Part No.LT1021CCN8-5#PBF
SGD8.322
Each (In a Tube of 50)
units
5V PDIP Fixed ±0.05 % Through Hole Series 10mA 40 V 4.998 V 5.003 V 8 12 ppm/V 100 ppm/mA 10.16 x 6.48 x 3.3mm
RS Stock No. 661-9596
Mfr. Part No.TLV431ACDBZR
SGD0.912
Each (In a Pack of 5)
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. 522-8376
Mfr. Part No.REF01CSZ
SGD3.47
Each
units
10V SOIC Fixed ±1.0 % Surface Mount Series 8mA 36 V 9.9 V 10.1 V 8 150 ppm/V 150 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 523-7415
Mfr. Part No.AD587KNZ
SGD19.09
Each
units
10V PDIP Fixed ±0.05 % Through Hole Series 10mA 36 V 9.995 V 10.005 V 8 100 μV/V 100 μV/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 165-3596
Mfr. Part No.MCP1525-I/TO
BrandMicrochip
SGD0.589
Each (In a Bag of 1000)
units
2.5V TO-92 Fixed ±1.0 % Through Hole Series 20mA 7 V - - 3 350 μV/V 1.3 mV/mA 4.71 x 3.62 x 4.62mm
RS Stock No. 106-7054
Mfr. Part No.REF01CSZ
SGD2.921
Each (In a Tube of 98)
units
10V SOIC Fixed ±1.0 % Surface Mount Series 8mA 36 V 9.9 V 10.1 V 8 150 ppm/V 150 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 651-3293
Mfr. Part No.LM4132DMF-4.1/NOPB
SGD2.16
Each
units
4.096V SOT-23 Fixed ±0.4 % Surface Mount Series 20mA 6 V - - 5 100 ppm/V 25 ppm/mA 2.92 x 1.6 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%.
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%.