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. 806-4689
FabrikantnummerLM431AIZ
FabrikantON Semiconductor
0,253 €
Each (In a Pack of 50)
Aantal stuks
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA - 2.5 (Cathode) V 36 V 3 - - 5.2 x 4.19 x 5.33mm
RS-stocknr. 166-3615
FabrikantnummerLM431AIZ
FabrikantON Semiconductor
0,057 €
Each (In a Bag of 10000)
Aantal stuks
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA - 2.5 (Cathode) V 36 V 3 - - 5.2 x 4.19 x 5.33mm
RS-stocknr. 166-1973
FabrikantnummerLM431SCCM3X
FabrikantON Semiconductor
0,071 €
Each (On a Reel of 3000)
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. 166-3616
FabrikantnummerLM431CCZ
FabrikantON Semiconductor
0,054 €
Each (In a Bag of 10000)
Aantal stuks
2.5 - 36V TO-92 Adjustable ±0.5 % Through Hole Shunt 100mA - 2.5 (Cathode) V 36 V 3 - - 5.2 x 4.19 x 5.33mm
RS-stocknr. 781-4386
FabrikantnummerNCP431AISNT1G
FabrikantON Semiconductor
0,294 €
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. 805-1393
FabrikantnummerLM385BD-2.5R2G
FabrikantON Semiconductor
0,566 €
Each (On a Tape of 20)
Aantal stuks
2.5V SOIC Fixed ±1.5 % Surface Mount Shunt - - - - 8 - - 5 x 4 x 1.5mm
RS-stocknr. 166-1672
FabrikantnummerLM431SCCMLX
FabrikantON Semiconductor
0,106 €
Each (On a Reel of 4000)
Aantal stuks
2.5 - 36V SOT-89 Adjustable ±0.5 % Surface Mount Shunt 100mA - 2.5 (Cathode) V 36 V 3 - - 4.7 x 2.7 x 1.7mm
RS-stocknr. 163-2418
FabrikantnummerLM385D-2.5G
FabrikantON Semiconductor
0,615 €
Each (In a Tube of 98)
Aantal stuks
2.5V SOIC Fixed ±3 % Surface Mount Shunt 20mA - 2.425 V 2.575 V 8 - 20 mV 5 x 4 x 1.5mm
RS-stocknr. 186-8938
FabrikantnummerTL431BIDG
FabrikantON Semiconductor
0,352 €
Each (In a Tube of 98)
Aantal stuks
2.49V SOIC Programmable 0.4% Surface Mount Shunt - 2.51 V - 36 V 8 - - 5 x 4 x 1.5mm
RS-stocknr. 805-1378
FabrikantnummerLM385BD-1.2G
FabrikantON Semiconductor
0,615 €
Each (In a Pack of 25)
Aantal stuks
1.235V SOIC Fixed ±1.0 % Surface Mount Shunt - - - - 8 - - 5 x 4 x 1.5mm
RS-stocknr. 145-4733
FabrikantnummerNCP431AISNT1G
FabrikantON Semiconductor
0,09 €
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. 166-3132
FabrikantnummerLM431CIMX
FabrikantON Semiconductor
0,142 €
Each (On a Reel of 3000)
Aantal stuks
2.5 - 36V SOIC Adjustable ±0.5 % Surface Mount Shunt 100mA - 2.5 (Cathode) V 36 V 8 - - 5 x 4 x 1.5mm
RS-stocknr. 162-8884
FabrikantnummerLM285Z-1.2RAG
FabrikantON Semiconductor
0,259 €
Each (On a Reel of 2000)
Aantal stuks
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt - - - - 3 - - 5.2 x 4.19 x 5.33mm
RS-stocknr. 463-498
FabrikantnummerLM385Z-2.5G
FabrikantON Semiconductor
0,466 €
Each (In a Pack of 10)
Aantal stuks
2.5V TO-92 Fixed ±3 % Through Hole Shunt 20mA - 2.425 V 2.575 V 3 - 20 mV 5.2 x 4.19 x 5.33mm
RS-stocknr. 122-0101
FabrikantnummerTL431BCDR2G
FabrikantON Semiconductor
0,137 €
Each (On a Reel of 2500)
Aantal stuks
2.5 - 36V SOIC Adjustable ±0.4 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 5 x 4 x 1.5mm
RS-stocknr. 184-1464
FabrikantnummerTLV431ASN1T1G
FabrikantON Semiconductor
0,337 €
Each (In a Pack of 25)
Aantal stuks
1.24V SOT-23 Precision, Programmable ±1 %, ±2 % Surface Mount Series/Shunt 20mA 16 V 1.24 V 16 V 3 - - 3.04 x 1.4 x 1.01mm
RS-stocknr. 186-8939
FabrikantnummerTL431CDG
FabrikantON Semiconductor
0,294 €
Each (In a Tube of 98)
Aantal stuks
2.49V SOIC Programmable 2.2% Surface Mount Shunt - 2.56 V - 36 V 8 - - 5 x 4 x 1.5mm
RS-stocknr. 184-1482
FabrikantnummerTLV431ASNT1G
FabrikantON Semiconductor
0,353 €
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. 146-2126
FabrikantnummerLM431SBCM32X
FabrikantON Semiconductor
0,071 €
Each (On a Reel of 3000)
Aantal stuks
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA - 2.5 (Cathode) V 36 V 3 - - 2.92 x 1.3 x 0.93mm
RS-stocknr. 688-9323
FabrikantnummerTL431BCDR2G
FabrikantON Semiconductor
0,425 €
Each (In a Pack of 2)
Aantal stuks
2.5 - 36V SOIC Adjustable ±0.4 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 5 x 4 x 1.5mm