Voltage References

Voltage references are electronic devices that provide a fixed output voltage. They provide a constant voltage regardless of external factors. This includes the load on the device, temperature or fluctuations in the power supply. Learn more in our Complete Guide to Voltage References.

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.

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%.

Voltage reference ICs come in a standard semiconductor package, such as PDIP, SO, SOIC and SOT-23. The pin count may also be combined with the package type, for example SO-8.

Types of voltage references

  • Two-terminal shunt voltage reference
  • Three-terminal series voltage reference
  • Band-gap voltage reference
  • Low noise voltage reference
  • Micropower voltage reference

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 analogue-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. Voltage references are also used in battery-powered devices.


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Omschrijving Prijs 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-stocknr. 781-4386
FabrikantnummerNCP431AISNT1G
FabrikantON Semiconductor
€ 0,25
Each (On a Tape of 50)
Aantal stuks
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA - - 36 V 3 - - 3.04 x 1.04 x 1.01mm
RS-stocknr. 145-4733
FabrikantnummerNCP431AISNT1G
FabrikantON Semiconductor
€ 0,075
Each (On a Reel of 3000)
Aantal stuks
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA - - 36 V 3 - - 3.04 x 1.04 x 1.01mm
RS-stocknr. 163-1004
FabrikantnummerNCP431ACSNT1G
FabrikantON Semiconductor
€ 0,077
Each (On a Reel of 3000)
Aantal stuks
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA - 2.475 V 36 V 3 - - 3.04 x 1.4 x 1.01mm
RS-stocknr. 163-0322
FabrikantnummerTL431ACLPG
FabrikantON Semiconductor
€ 0,137
Each (In a Bag of 2000)
Aantal stuks
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-stocknr. 184-1482
FabrikantnummerTLV431ASNT1G
FabrikantON Semiconductor
€ 0,306
Each (In a Pack of 25)
Aantal stuks
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-stocknr. 776-0759
FabrikantnummerNCP431ACSNT1G
FabrikantON Semiconductor
€ 0,25
Each (In a Pack of 10)
Aantal stuks
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA - 2.475 V 36 V 3 - - 3.04 x 1.4 x 1.01mm
RS-stocknr. 862-4976
FabrikantnummerTL431ACLPG
FabrikantON Semiconductor
€ 0,342
Each (In a Pack of 50)
Aantal stuks
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-stocknr. 163-2402
FabrikantnummerLM285Z-2.5G
FabrikantON Semiconductor
€ 0,217
Each (In a Bag of 2000)
Aantal stuks
2.5V TO-92 Fixed ±1.5 % Through Hole Shunt 20mA - 2.462 V 2.538 V 3 - 10 mV 5.2 x 4.19 x 5.33mm
RS-stocknr. 184-1119
FabrikantnummerTLV431ASNT1G
FabrikantON Semiconductor
€ 0,107
Each (On a Reel of 3000)
Aantal stuks
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-stocknr. 463-492
FabrikantnummerLM285Z-2.5G
FabrikantON Semiconductor
€ 0,473
Each (In a Pack of 10)
Aantal stuks
2.5V TO-92 Fixed ±1.5 % Through Hole Shunt 20mA - 2.462 V 2.538 V 3 - 10 mV 5.2 x 4.19 x 5.33mm
RS-stocknr. 806-4055
FabrikantnummerLM431SCCMFX
FabrikantON Semiconductor
€ 0,236
Each (On a Tape of 50)
Aantal stuks
2.5 - 36V SOT-23F Adjustable ±0.5 % Surface Mount Shunt 100mA - 2.5 (Cathode) V 36 V 3 - - 3 x 1.7 x 1mm
RS-stocknr. 806-4043
FabrikantnummerLM431SCCM32X
FabrikantON Semiconductor
€ 0,108
Each (On a Tape of 100)
Aantal stuks
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA - 2.5 (Cathode) V 36 V 3 - - 2.92 x 1.3 x 0.93mm
RS-stocknr. 163-0321
FabrikantnummerTL431ACDR2G
FabrikantON Semiconductor
€ 0,093
Each (On a Reel of 2500)
Aantal stuks
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-stocknr. 145-2809
FabrikantnummerLM385D-1.2G
FabrikantON Semiconductor
€ 0,488
Each (In a Tube of 98)
Aantal stuks
1.235V SOIC Fixed ±2.0 % Surface Mount Shunt 20mA - 1.205 V 1.26 V 8 - 20 mV 5 x 4 x 1.5mm
RS-stocknr. 781-4395
FabrikantnummerNCP431AVSNT1G
FabrikantON Semiconductor
€ 0,055
Each (On a Tape of 50)
Aantal stuks
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA - - 36 V 3 - - 3.04 x 1.04 x 1.01mm
RS-stocknr. 774-3697
FabrikantnummerTL431AILPG
FabrikantON Semiconductor
€ 0,302
Each (In a Pack of 10)
Aantal stuks
2.5 - 36V TO-92 Programmable ±4 % Through Hole Shunt 100mA 37 V 2.495 V 36 V 3 53 mV 25 mV 5.2 x 4.19 x 5.33mm
RS-stocknr. 805-1330
FabrikantnummerLM285Z-1.2RAG
FabrikantON Semiconductor
€ 0,488
Each (In a Pack of 20)
Aantal stuks
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt - - - - 3 - - 5.2 x 4.19 x 5.33mm
RS-stocknr. 807-8783
FabrikantnummerKA431SAMF2TF
FabrikantON Semiconductor
€ 0,225
Each (On a Tape of 50)
Aantal stuks
2.5 - 36V SOT-23F Programmable ±1.0 % Surface Mount Shunt - - - 36 V 3 - - 3 x 1.7 x 1mm
RS-stocknr. 805-4581
FabrikantnummerTL431BCDG
FabrikantON Semiconductor
€ 0,328
Each (In a Pack of 50)
Aantal stuks
2.5 - 36V SOIC Fixed ±0.4 % Surface Mount Shunt 100mA - - 36 V 8 53 mV 25 mV 5 x 4 x 1.5mm
RS-stocknr. 806-4052
FabrikantnummerLM431SCCM3X
FabrikantON Semiconductor
€ 0,108
Each (In a Pack of 100)
Aantal stuks
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA - 2.5 (Cathode) V 36 V 3 - - 2.92 x 1.3 x 0.93mm