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. 111-5568
Mfr. Part No.MCP1501-10E/SN
BrandMicrochip
PHP35.992
Each (In a Pack of 10)
units
1.02V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 1.023 V 1.025 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 889-5137
Mfr. Part No.MCP1525T-I/TT
BrandMicrochip
PHP23.395
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Series 20mA 7 V 2.475 V 2.525 V 3 350 μV/V 1.3 mV/mA 2.9 x 1.3 x 0.95mm
RS Stock No. 165-4708
Mfr. Part No.MCP1501-10E/SN
BrandMicrochip
PHP31.072
Each (In a Tube of 100)
units
1.02V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 1.023 V 1.025 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 698-9069
Mfr. Part No.MCP1525T-I/TT
BrandMicrochip
PHP40.39
Each
units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Series 20mA 7 V 2.475 V 2.525 V 3 350 μV/V 1.3 mV/mA 2.9 x 1.3 x 0.95mm
RS Stock No. 165-4661
Mfr. Part No.MCP1541-I/TO
BrandMicrochip
PHP19.16
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
RS Stock No. 738-6358
Mfr. Part No.MCP1525-I/TO
BrandMicrochip
PHP39.154
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. 177-2824
Mfr. Part No.LM4040CYM3-2.5-TR
BrandMicrochip
PHP14.06
Each (On a Reel of 3000)
units
2.5V SOT-23 Precision ±0.5% Surface Mount Shunt 15mA 15 V - 2.5 V 3 - - 0.9 x 2.92 x 1.3mm
RS Stock No. 698-9047
Mfr. Part No.MCP1541T-I/TT
BrandMicrochip
PHP34.37
Each
units
4.096V SOT-23 Precision 1% Surface Mount Series 20mA 7 V 4.055 V 4.137 V 3 350 μV/V 1.3 mV/mA 2.9 x 1.3 x 0.95mm
RS Stock No. 144-9110
Mfr. Part No.MCP1501-12E/SN
BrandMicrochip
PHP31.072
Each (In a Tube of 100)
units
1.25V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 1.24 V 1.25 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 111-5564
Mfr. Part No.MCP1501-40E/SN
BrandMicrochip
PHP36.712
Each (In a Pack of 10)
units
4.096V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 4.092 V 4.099 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 111-5566
Mfr. Part No.MCP1501-20E/SN
BrandMicrochip
PHP39.732
Each (In a Pack of 10)
units
2.04V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 2.04 V 2.05 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 911-2941
Mfr. Part No.LM4041DYM3-1.2-TR
BrandMicrochip
PHP12.639
Each (In a Pack of 25)
units
1.225V SOT-23 Fixed ±1.0 % Surface Mount Shunt - - - 1.225 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 165-4706
Mfr. Part No.MCP1501-40E/SN
BrandMicrochip
PHP31.072
Each (In a Tube of 100)
units
4.096V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 4.092 V 4.099 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 681-1083
Mfr. Part No.MCP1541-I/TO
BrandMicrochip
PHP40.39
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. 177-3273
Mfr. Part No.LM4040CYM3-2.5-TR
BrandMicrochip
PHP14.80
Each (In a Pack of 50)
units
2.5V SOT-23 Precision ±0.5% Surface Mount Shunt 15mA 15 V - 2.5 V 3 - - 0.9 x 2.92 x 1.3mm
RS Stock No. 889-5815
Mfr. Part No.MCP1541T-I/TT
BrandMicrochip
PHP17.54
Each (On a Reel of 3000)
units
4.096V SOT-23 Precision 1% Surface Mount Series 20mA 7 V 4.055 V 4.137 V 3 350 μV/V 1.3 mV/mA 2.9 x 1.3 x 0.95mm
RS Stock No. 111-5571
Mfr. Part No.MCP1501-12E/SN
BrandMicrochip
PHP39.732
Each (In a Pack of 10)
units
1.25V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 1.24 V 1.25 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 177-3005
Mfr. Part No.LM4041CYM3-ADJ-TR
BrandMicrochip
PHP14.80
Each (In a Pack of 50)
units
1.23V SOT-23 Adjustable, Precision ±0.5% Surface Mount Shunt 12mA 15 V - 10 V 3 - - 0.9 x 2.92 x 1.3mm
RS Stock No. 165-4707
Mfr. Part No.MCP1501-20E/SN
BrandMicrochip
PHP31.072
Each (In a Tube of 100)
units
2.04V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 2.04 V 2.05 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 111-5565
Mfr. Part No.MCP1501-30E/SN
BrandMicrochip
PHP39.732
Each (In a Pack of 10)
units
3V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 2.99 V 3 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm