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. 534-3043
Mfr. Part No.LM4040DIZ-10.0/NOPB
$0.89
Each
units
10V TO-92 Fixed ±1.0 % Through Hole Shunt 15mA - - - 3 - 18 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 121-8774
Mfr. Part No.LM4040DIZ-10.0/NOPB
$0.351
Each (In a Box of 1800)
units
10V TO-92 Fixed ±1.0 % Through Hole Shunt 15mA - - - 3 - 18 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 761-8285
Mfr. Part No.LT1461CCS8-3.3#PBF
$5.46
Each
units
3.3V SOIC Fixed ±0.04 % Surface Mount Series 100mA 20 V - 3.3 V 8 12 ppm/V 40 ppm/V 5.004 x 3.988 x 1.498mm
RS Stock No. 732-8052
Mfr. Part No.MAX6250BCSA+
$6.04
Each
units
5V SOIC Fixed ±0.02 % Surface Mount Series 15mA 36 V 5 V 5.01 V 8 30 ppm/V 6 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 103-9980
Mfr. Part No.MAX6104EUR+T
$0.772
Each (On a Reel of 2500)
units
4.096V SOT-23 Fixed ±0.4 % Surface Mount Series 5mA 12.6 V 4.080 V 4.11 V 3 430 μV/V 8 mV/mA 3.048 x 1.397 x 1.067mm
RS Stock No. 145-0736
Mfr. Part No.LM399H#PBF
$16.861
Each (In a Tube of 20)
units
6.95V TO-46 Fixed ±5 % Through Hole Shunt 10mA - - 6.95 V 4 - - 10.389 (Dia.) x 5.943mm
RS Stock No. 153-3612
Mfr. Part No.LT1461CCS8-3.3#PBF
$3.523
Each (In a Tube of 100)
units
3.3V SOIC Fixed ±0.04 % Surface Mount Series 100mA 20 V - 3.3 V 8 12 ppm/V 40 ppm/V 5.004 x 3.988 x 1.498mm
RS Stock No. 165-9301
Mfr. Part No.MAX6250BCSA+
$7.776
Each (In a Tube of 100)
units
5V SOIC Fixed ±0.02 % Surface Mount Series 15mA 36 V 5 V 5.01 V 8 30 ppm/V 6 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 162-5897
Mfr. Part No.TL431AIDBZR
$0.146
Each (On a Reel of 3000)
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. 661-9518
Mfr. Part No.TL431AIDBZR
$0.441
Each (In a Pack of 10)
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. 732-8024
Mfr. Part No.MAX6104EUR+T
$1.64
Each (In a Pack of 5)
units
4.096V SOT-23 Fixed ±0.4 % Surface Mount Series 5mA 12.6 V 4.080 V 4.11 V 3 430 μV/V 8 mV/mA 3.048 x 1.397 x 1.067mm
RS Stock No. 168-4858
Mfr. Part No.TL431AIDBZT
$0.455
Each (On a Reel of 250)
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. 122-0111
Mfr. Part No.NCP51460SN33T1G
$0.527
Each (On a Reel of 3000)
units
3.3V SOT-23 Fixed ±1.0 % Surface Mount Series 20mA 28 V 3.27 V 3.33 V 3 500 ppm/V 4000 ppm/mA 3.04 x 1.4 x 1.01mm
RS Stock No. 779-8903
Mfr. Part No.LM399H#PBF
$16.86
Each
units
6.95V TO-46 Fixed ±5 % Through Hole Shunt 10mA - - 6.95 V 4 - - 10.389 (Dia.) x 5.943mm
RS Stock No. 660-5620
Mfr. Part No.REF102CU
$15.19
Each
units
10V SOIC Fixed ±0.025 % Surface Mount Series - 40 V 9.998 V 10.003 V 8 1 ppm/V 20 ppm/mA 4.9 x 3.91 x 1.58mm
RS Stock No. 103-9983
Mfr. Part No.MAX6250AESA+
$11.00
Each (In a Tube of 100)
units
5V SOIC Fixed ±0.02 % Surface Mount Series 15mA 36 V 5 V 5 V 8 35 ppm/V 7 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 681-1083
Mfr. Part No.MCP1541-I/TO
BrandMicrochip
$1.14
Each (In a Pack of 2)
units
4.096V TO-92 Fixed ±1.0 % Through Hole Series 20mA 7 V 4.055 V 4.137 V 3 350 μV/V 1.3 mV/mA 4.71 x 3.62 x 4.62mm
RS Stock No. 923-5586
Mfr. Part No.MAX6350CSA+
$13.82
Each (In a Tube of 100)
units
5V SOIC Fixed ±0.02 % Surface Mount Series 15mA 36 V 5 V 5 V 8 30 ppm/V 6 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 923-3619
Mfr. Part No.REF102CU
$11.381
Each (In a Tube of 75)
units
10V SOIC Fixed ±0.025 % Surface Mount Series - 40 V 9.998 V 10.003 V 8 1 ppm/V 20 ppm/mA 4.9 x 3.91 x 1.58mm
RS Stock No. 165-4661
Mfr. Part No.MCP1541-I/TO
BrandMicrochip
$0.535
Each (In a Bag of 1000)
units
4.096V TO-92 Fixed ±1.0 % Through Hole Series 20mA 7 V 4.055 V 4.137 V 3 350 μV/V 1.3 mV/mA 4.71 x 3.62 x 4.62mm
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